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certutil.1 (50178B)


      1 '\" t
      2 .\"     Title: CERTUTIL
      3 .\"    Author: [see the "Authors" section]
      4 .\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
      5 .\"      Date: 19 May 2021
      6 .\"    Manual: NSS Security Tools
      7 .\"    Source: nss-tools
      8 .\"  Language: English
      9 .\"
     10 .TH "CERTUTIL" "1" "19 May 2021" "nss-tools" "NSS Security Tools"
     11 .\" -----------------------------------------------------------------
     12 .\" * Define some portability stuff
     13 .\" -----------------------------------------------------------------
     14 .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     15 .\" http://bugs.debian.org/507673
     16 .\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
     17 .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     18 .ie \n(.g .ds Aq \(aq
     19 .el       .ds Aq '
     20 .\" -----------------------------------------------------------------
     21 .\" * set default formatting
     22 .\" -----------------------------------------------------------------
     23 .\" disable hyphenation
     24 .nh
     25 .\" disable justification (adjust text to left margin only)
     26 .ad l
     27 .\" -----------------------------------------------------------------
     28 .\" * MAIN CONTENT STARTS HERE *
     29 .\" -----------------------------------------------------------------
     30 .SH "NAME"
     31 certutil \- Manage keys and certificate in both NSS databases and other NSS tokens
     32 .SH "SYNOPSIS"
     33 .HP \w'\fBcertutil\fR\ 'u
     34 \fBcertutil\fR [\fIoptions\fR] [[\fIarguments\fR]]
     35 .SH "STATUS"
     36 .PP
     37 This documentation is still work in progress\&. Please contribute to the initial review in
     38 \m[blue]\fBMozilla NSS bug 836477\fR\m[]\&\s-2\u[1]\d\s+2
     39 .SH "DESCRIPTION"
     40 .PP
     41 The Certificate Database Tool,
     42 \fBcertutil\fR, is a command\-line utility that can create and modify certificate and key databases\&. It can specifically list, generate, modify, or delete certificates, create or change the password, generate new public and private key pairs, display the contents of the key database, or delete key pairs within the key database\&.
     43 .PP
     44 Certificate issuance, part of the key and certificate management process, requires that keys and certificates be created in the key database\&. This document discusses certificate and key database management\&. For information on the security module database management, see the
     45 \fBmodutil\fR
     46 manpage\&.
     47 .SH "COMMAND OPTIONS AND ARGUMENTS"
     48 .PP
     49 Running
     50 \fBcertutil\fR
     51 always requires one and only one command option to specify the type of certificate operation\&. Each command option may take zero or more arguments\&. The command option
     52 \fB\-H\fR
     53 will list all the command options and their relevant arguments\&.
     54 .PP
     55 \fBCommand Options\fR
     56 .PP
     57 \-A
     58 .RS 4
     59 Add an existing certificate to a certificate database\&. The certificate database should already exist; if one is not present, this command option will initialize one by default\&.
     60 .RE
     61 .PP
     62 \-B
     63 .RS 4
     64 Run a series of commands from the specified batch file\&. This requires the
     65 \fB\-i\fR
     66 argument\&.
     67 .RE
     68 .PP
     69 \-C
     70 .RS 4
     71 Create a new binary certificate file from a binary certificate request file\&. Use the
     72 \fB\-i\fR
     73 argument to specify the certificate request file\&. If this argument is not used,
     74 \fBcertutil\fR
     75 prompts for a filename\&.
     76 .RE
     77 .PP
     78 \-D
     79 .RS 4
     80 Delete a certificate from the certificate database\&.
     81 .RE
     82 .PP
     83 \-\-rename
     84 .RS 4
     85 Change the database nickname of a certificate\&.
     86 .RE
     87 .PP
     88 \-E
     89 .RS 4
     90 Add an email certificate to the certificate database\&.
     91 .RE
     92 .PP
     93 \-F
     94 .RS 4
     95 Delete a private key and the associated certificate from a database\&. Specify the key to delete with the \-n argument or the \-k argument\&. Specify the database from which to delete the key with the
     96 \fB\-d\fR
     97 argument\&.
     98 .sp
     99 Some smart cards do not let you remove a public key you have generated\&. In such a case, only the private key is deleted from the key pair\&.
    100 .RE
    101 .PP
    102 \-G
    103 .RS 4
    104 Generate a new public and private key pair within a key database\&. The key database should already exist; if one is not present, this command option will initialize one by default\&. Some smart cards can store only one key pair\&. If you create a new key pair for such a card, the previous pair is overwritten\&.
    105 .RE
    106 .PP
    107 \-H
    108 .RS 4
    109 Display a list of the command options and arguments\&.
    110 .RE
    111 .PP
    112 \-K
    113 .RS 4
    114 List the key ID of keys in the key database\&. A key ID is the modulus of the RSA key or the publicValue of the DSA key\&. IDs are displayed in hexadecimal ("0x" is not shown)\&.
    115 .RE
    116 .PP
    117 \-L
    118 .RS 4
    119 List all the certificates, or display information about a named certificate, in a certificate database\&. Use the \-h tokenname argument to specify the certificate database on a particular hardware or software token\&.
    120 .RE
    121 .PP
    122 \-M
    123 .RS 4
    124 Modify a certificate\*(Aqs trust attributes using the values of the \-t argument\&.
    125 .RE
    126 .PP
    127 \-N
    128 .RS 4
    129 Create new certificate and key databases\&.
    130 .RE
    131 .PP
    132 \-O
    133 .RS 4
    134 Print the certificate chain\&.
    135 .RE
    136 .PP
    137 \-R
    138 .RS 4
    139 Create a certificate request file that can be submitted to a Certificate Authority (CA) for processing into a finished certificate\&. Output defaults to standard out unless you use \-o output\-file argument\&. Use the \-a argument to specify ASCII output\&.
    140 .RE
    141 .PP
    142 \-S
    143 .RS 4
    144 Create an individual certificate and add it to a certificate database\&.
    145 .RE
    146 .PP
    147 \-T
    148 .RS 4
    149 Reset the key database or token\&.
    150 .RE
    151 .PP
    152 \-U
    153 .RS 4
    154 List all available modules or print a single named module\&.
    155 .RE
    156 .PP
    157 \-V
    158 .RS 4
    159 Check the validity of a certificate and its attributes\&.
    160 .RE
    161 .PP
    162 \-W
    163 .RS 4
    164 Change the password to a key database\&.
    165 .RE
    166 .PP
    167 \-\-merge
    168 .RS 4
    169 Merge two databases into one\&.
    170 .RE
    171 .PP
    172 \-\-upgrade\-merge
    173 .RS 4
    174 Upgrade an old database and merge it into a new database\&. This is used to migrate legacy NSS databases (cert8\&.db
    175 and
    176 key3\&.db) into the newer SQLite databases (cert9\&.db
    177 and
    178 key4\&.db)\&.
    179 .RE
    180 .PP
    181 \fBArguments\fR
    182 .PP
    183 Arguments modify a command option and are usually lower case, numbers, or symbols\&.
    184 .PP
    185 \-a
    186 .RS 4
    187 Use ASCII format or allow the use of ASCII format for input or output\&. This formatting follows RFC 1113\&. For certificate requests, ASCII output defaults to standard output unless redirected\&.
    188 .RE
    189 .PP
    190 \-\-simple\-self\-signed
    191 .RS 4
    192 When printing the certificate chain, don\*(Aqt search for a chain if issuer name equals to subject name\&.
    193 .RE
    194 .PP
    195 \-b validity\-time
    196 .RS 4
    197 Specify a time at which a certificate is required to be valid\&. Use when checking certificate validity with the
    198 \fB\-V\fR
    199 option\&. The format of the
    200 \fIvalidity\-time\fR
    201 argument is
    202 \fIYYMMDDHHMMSS[+HHMM|\-HHMM|Z]\fR, which allows offsets to be set relative to the validity end time\&. Specifying seconds (\fISS\fR) is optional\&. When specifying an explicit time, use a Z at the end of the term,
    203 \fIYYMMDDHHMMSSZ\fR, to close it\&. When specifying an offset time, use
    204 \fIYYMMDDHHMMSS+HHMM\fR
    205 or
    206 \fIYYMMDDHHMMSS\-HHMM\fR
    207 for adding or subtracting time, respectively\&.
    208 .sp
    209 If this option is not used, the validity check defaults to the current system time\&.
    210 .RE
    211 .PP
    212 \-c issuer
    213 .RS 4
    214 Identify the certificate of the CA from which a new certificate will derive its authenticity\&. Use the exact nickname or alias of the CA certificate, or use the CA\*(Aqs email address\&. Bracket the issuer string with quotation marks if it contains spaces\&.
    215 .RE
    216 .PP
    217 \-d [prefix]directory
    218 .RS 4
    219 Specify the database directory containing the certificate and key database files\&.
    220 .sp
    221 \fBcertutil\fR
    222 supports two types of databases: the legacy security databases (cert8\&.db,
    223 key3\&.db, and
    224 secmod\&.db) and new SQLite databases (cert9\&.db,
    225 key4\&.db, and
    226 pkcs11\&.txt)\&.
    227 .sp
    228 NSS recognizes the following prefixes:
    229 .sp
    230 .RS 4
    231 .ie n \{\
    232 \h'-04'\(bu\h'+03'\c
    233 .\}
    234 .el \{\
    235 .sp -1
    236 .IP \(bu 2.3
    237 .\}
    238 \fBsql:\fR
    239 requests the newer database
    240 .RE
    241 .sp
    242 .RS 4
    243 .ie n \{\
    244 \h'-04'\(bu\h'+03'\c
    245 .\}
    246 .el \{\
    247 .sp -1
    248 .IP \(bu 2.3
    249 .\}
    250 \fBdbm:\fR
    251 requests the legacy database
    252 .RE
    253 .sp
    254 If no prefix is specified the default type is retrieved from NSS_DEFAULT_DB_TYPE\&. If NSS_DEFAULT_DB_TYPE is not set then
    255 \fBsql:\fR
    256 is the default\&.
    257 .RE
    258 .PP
    259 \-\-dump\-ext\-val OID
    260 .RS 4
    261 For single cert, print binary DER encoding of extension OID\&.
    262 .RE
    263 .PP
    264 \-e
    265 .RS 4
    266 Check a certificate\*(Aqs signature during the process of validating a certificate\&.
    267 .RE
    268 .PP
    269 \-\-email email\-address
    270 .RS 4
    271 Specify the email address of a certificate to list\&. Used with the \-L command option\&.
    272 .RE
    273 .PP
    274 \-\-extGeneric OID:critical\-flag:filename[,OID:critical\-flag:filename]\&.\&.\&.
    275 .RS 4
    276 Add one or multiple extensions that certutil cannot encode yet, by loading their encodings from external files\&.
    277 .sp
    278 .RS 4
    279 .ie n \{\
    280 \h'-04'\(bu\h'+03'\c
    281 .\}
    282 .el \{\
    283 .sp -1
    284 .IP \(bu 2.3
    285 .\}
    286 OID (example): 1\&.2\&.3\&.4
    287 .RE
    288 .sp
    289 .RS 4
    290 .ie n \{\
    291 \h'-04'\(bu\h'+03'\c
    292 .\}
    293 .el \{\
    294 .sp -1
    295 .IP \(bu 2.3
    296 .\}
    297 critical\-flag: critical or not\-critical
    298 .RE
    299 .sp
    300 .RS 4
    301 .ie n \{\
    302 \h'-04'\(bu\h'+03'\c
    303 .\}
    304 .el \{\
    305 .sp -1
    306 .IP \(bu 2.3
    307 .\}
    308 filename: full path to a file containing an encoded extension
    309 .RE
    310 .RE
    311 .PP
    312 \-f password\-file
    313 .RS 4
    314 Specify a file that will automatically supply the password to include in a certificate or to access a certificate database\&. This is a plain\-text file containing one password\&. Be sure to prevent unauthorized access to this file\&.
    315 .RE
    316 .PP
    317 \-g keysize
    318 .RS 4
    319 Set a key size to use when generating new public and private key pairs\&. The minimum is 512 bits and the maximum is 16384 bits\&. The default is 2048 bits\&. Any size between the minimum and maximum is allowed\&.
    320 .RE
    321 .PP
    322 \-h tokenname
    323 .RS 4
    324 Specify the name of a token to use or act on\&. If not specified the default token is the internal database slot\&.
    325 .sp
    326 The name can also be a PKCS #11 URI\&. For example, the NSS internal certificate store can be unambiguously specified as "pkcs11:token=NSS%20Certificate%20DB"\&. For details about the format, see RFC 7512\&.
    327 .RE
    328 .PP
    329 \-i input_file
    330 .RS 4
    331 Pass an input file to the command\&. Depending on the command option, an input file can be a specific certificate, a certificate request file, or a batch file of commands\&.
    332 .RE
    333 .PP
    334 \-k key\-type\-or\-id
    335 .RS 4
    336 Specify the type or specific ID of a key\&.
    337 .sp
    338 The valid key type options are rsa, dsa, ec, or all\&. The default value is rsa\&. Specifying the type of key can avoid mistakes caused by duplicate nicknames\&. Giving a key type generates a new key pair; giving the ID of an existing key reuses that key pair (which is required to renew certificates)\&.
    339 .RE
    340 .PP
    341 \-l
    342 .RS 4
    343 Display detailed information when validating a certificate with the \-V option\&.
    344 .RE
    345 .PP
    346 \-m serial\-number
    347 .RS 4
    348 Assign a unique serial number to a certificate being created\&. This operation should be performed by a CA\&. If no serial number is provided a default serial number is made from the current time\&. Serial numbers are limited to integers
    349 .RE
    350 .PP
    351 \-n nickname
    352 .RS 4
    353 Specify the nickname of a certificate or key to list, create, add to a database, modify, or validate\&. Bracket the nickname string with quotation marks if it contains spaces\&.
    354 .sp
    355 The nickname can also be a PKCS #11 URI\&. For example, if you have a certificate named "my\-server\-cert" on the internal certificate store, it can be unambiguously specified as "pkcs11:token=NSS%20Certificate%20DB;object=my\-server\-cert"\&. For details about the format, see RFC 7512\&.
    356 .RE
    357 .PP
    358 \-o output\-file
    359 .RS 4
    360 Specify the output file name for new certificates or binary certificate requests\&. Bracket the output\-file string with quotation marks if it contains spaces\&. If this argument is not used the output destination defaults to standard output\&.
    361 .RE
    362 .PP
    363 \-P dbPrefix
    364 .RS 4
    365 Specify the prefix used on the certificate and key database file\&. This argument is provided to support legacy servers\&. Most applications do not use a database prefix\&.
    366 .RE
    367 .PP
    368 \-p phone
    369 .RS 4
    370 Specify a contact telephone number to include in new certificates or certificate requests\&. Bracket this string with quotation marks if it contains spaces\&.
    371 .RE
    372 .PP
    373 \-q pqgfile or curve\-name
    374 .RS 4
    375 Read an alternate PQG value from the specified file when generating DSA key pairs\&. If this argument is not used,
    376 \fBcertutil\fR
    377 generates its own PQG value\&. PQG files are created with a separate DSA utility\&.
    378 .sp
    379 Elliptic curve name is one of the ones from nistp256, nistp384, nistp521, curve25519\&.
    380 .sp
    381 If a token is available that supports more curves, the foolowing curves are supported as well: sect163k1, nistk163, sect163r1, sect163r2, nistb163, sect193r1, sect193r2, sect233k1, nistk233, sect233r1, nistb233, sect239k1, sect283k1, nistk283, sect283r1, nistb283, sect409k1, nistk409, sect409r1, nistb409, sect571k1, nistk571, sect571r1, nistb571, secp160k1, secp160r1, secp160r2, secp192k1, secp192r1, nistp192, secp224k1, secp224r1, nistp224, secp256k1, secp256r1, secp384r1, secp521r1, prime192v1, prime192v2, prime192v3, prime239v1, prime239v2, prime239v3, c2pnb163v1, c2pnb163v2, c2pnb163v3, c2pnb176v1, c2tnb191v1, c2tnb191v2, c2tnb191v3, c2pnb208w1, c2tnb239v1, c2tnb239v2, c2tnb239v3, c2pnb272w1, c2pnb304w1, c2tnb359w1, c2pnb368w1, c2tnb431r1, secp112r1, secp112r2, secp128r1, secp128r2, sect113r1, sect113r2, sect131r1, sect131r2
    382 .RE
    383 .PP
    384 \-r
    385 .RS 4
    386 Display a certificate\*(Aqs binary DER encoding when listing information about that certificate with the \-L option\&.
    387 .RE
    388 .PP
    389 \-s subject
    390 .RS 4
    391 Identify a particular certificate owner for new certificates or certificate requests\&. Bracket this string with quotation marks if it contains spaces\&. The subject identification format follows RFC #1485\&.
    392 .RE
    393 .PP
    394 \-t trustargs
    395 .RS 4
    396 Specify the trust attributes to modify in an existing certificate or to apply to a certificate when creating it or adding it to a database\&. There are three available trust categories for each certificate, expressed in the order
    397 \fISSL, email, object signing\fR
    398 for each trust setting\&. In each category position, use none, any, or all of the attribute codes:
    399 .sp
    400 .RS 4
    401 .ie n \{\
    402 \h'-04'\(bu\h'+03'\c
    403 .\}
    404 .el \{\
    405 .sp -1
    406 .IP \(bu 2.3
    407 .\}
    408 \fBp\fR
    409 \- Valid peer
    410 .RE
    411 .sp
    412 .RS 4
    413 .ie n \{\
    414 \h'-04'\(bu\h'+03'\c
    415 .\}
    416 .el \{\
    417 .sp -1
    418 .IP \(bu 2.3
    419 .\}
    420 \fBP\fR
    421 \- Trusted peer (implies p)
    422 .RE
    423 .sp
    424 .RS 4
    425 .ie n \{\
    426 \h'-04'\(bu\h'+03'\c
    427 .\}
    428 .el \{\
    429 .sp -1
    430 .IP \(bu 2.3
    431 .\}
    432 \fBc\fR
    433 \- Valid CA
    434 .RE
    435 .sp
    436 .RS 4
    437 .ie n \{\
    438 \h'-04'\(bu\h'+03'\c
    439 .\}
    440 .el \{\
    441 .sp -1
    442 .IP \(bu 2.3
    443 .\}
    444 \fBC\fR
    445 \- Trusted CA (implies c)
    446 .RE
    447 .sp
    448 .RS 4
    449 .ie n \{\
    450 \h'-04'\(bu\h'+03'\c
    451 .\}
    452 .el \{\
    453 .sp -1
    454 .IP \(bu 2.3
    455 .\}
    456 \fBT\fR
    457 \- trusted CA for client authentication (ssl server only)
    458 .RE
    459 .sp
    460 The attribute codes for the categories are separated by commas, and the entire set of attributes enclosed by quotation marks\&. For example:
    461 .sp
    462 \fB\-t "TC,C,T"\fR
    463 .sp
    464 Use the \-L option to see a list of the current certificates and trust attributes in a certificate database\&.
    465 .sp
    466 Note that the output of the \-L option may include "u" flag, which means that there is a private key associated with the certificate\&. It is a dynamic flag and you cannot set it with certutil\&.
    467 .RE
    468 .PP
    469 \-u certusage
    470 .RS 4
    471 Specify a usage context to apply when validating a certificate with the \-V option\&.
    472 .sp
    473 The contexts are the following:
    474 .sp
    475 .RS 4
    476 .ie n \{\
    477 \h'-04'\(bu\h'+03'\c
    478 .\}
    479 .el \{\
    480 .sp -1
    481 .IP \(bu 2.3
    482 .\}
    483 \fBC\fR
    484 (as an SSL client)
    485 .RE
    486 .sp
    487 .RS 4
    488 .ie n \{\
    489 \h'-04'\(bu\h'+03'\c
    490 .\}
    491 .el \{\
    492 .sp -1
    493 .IP \(bu 2.3
    494 .\}
    495 \fBV\fR
    496 (as an SSL server)
    497 .RE
    498 .sp
    499 .RS 4
    500 .ie n \{\
    501 \h'-04'\(bu\h'+03'\c
    502 .\}
    503 .el \{\
    504 .sp -1
    505 .IP \(bu 2.3
    506 .\}
    507 \fBL\fR
    508 (as an SSL CA)
    509 .RE
    510 .sp
    511 .RS 4
    512 .ie n \{\
    513 \h'-04'\(bu\h'+03'\c
    514 .\}
    515 .el \{\
    516 .sp -1
    517 .IP \(bu 2.3
    518 .\}
    519 \fBA\fR
    520 (as Any CA)
    521 .RE
    522 .sp
    523 .RS 4
    524 .ie n \{\
    525 \h'-04'\(bu\h'+03'\c
    526 .\}
    527 .el \{\
    528 .sp -1
    529 .IP \(bu 2.3
    530 .\}
    531 \fBY\fR
    532 (Verify CA)
    533 .RE
    534 .sp
    535 .RS 4
    536 .ie n \{\
    537 \h'-04'\(bu\h'+03'\c
    538 .\}
    539 .el \{\
    540 .sp -1
    541 .IP \(bu 2.3
    542 .\}
    543 \fBS\fR
    544 (as an email signer)
    545 .RE
    546 .sp
    547 .RS 4
    548 .ie n \{\
    549 \h'-04'\(bu\h'+03'\c
    550 .\}
    551 .el \{\
    552 .sp -1
    553 .IP \(bu 2.3
    554 .\}
    555 \fBR\fR
    556 (as an email recipient)
    557 .RE
    558 .sp
    559 .RS 4
    560 .ie n \{\
    561 \h'-04'\(bu\h'+03'\c
    562 .\}
    563 .el \{\
    564 .sp -1
    565 .IP \(bu 2.3
    566 .\}
    567 \fBO\fR
    568 (as an OCSP status responder)
    569 .RE
    570 .sp
    571 .RS 4
    572 .ie n \{\
    573 \h'-04'\(bu\h'+03'\c
    574 .\}
    575 .el \{\
    576 .sp -1
    577 .IP \(bu 2.3
    578 .\}
    579 \fBJ\fR
    580 (as an object signer)
    581 .RE
    582 .sp
    583 .RS 4
    584 .ie n \{\
    585 \h'-04'\(bu\h'+03'\c
    586 .\}
    587 .el \{\
    588 .sp -1
    589 .IP \(bu 2.3
    590 .\}
    591 \fBI\fR
    592 (as an IPSEC user)
    593 .RE
    594 .RE
    595 .PP
    596 \-v valid\-months
    597 .RS 4
    598 Set the number of months a new certificate will be valid\&. The validity period begins at the current system time unless an offset is added or subtracted with the
    599 \fB\-w\fR
    600 option\&. If this argument is not used, the default validity period is three months\&.
    601 .RE
    602 .PP
    603 \-w offset\-months
    604 .RS 4
    605 Set an offset from the current system time, in months, for the beginning of a certificate\*(Aqs validity period\&. Use when creating the certificate or adding it to a database\&. Express the offset in integers, using a minus sign (\-) to indicate a negative offset\&. If this argument is not used, the validity period begins at the current system time\&. The length of the validity period is set with the \-v argument\&.
    606 .RE
    607 .PP
    608 \-X
    609 .RS 4
    610 Force the key and certificate database to open in read\-write mode\&. This is used with the
    611 \fB\-U\fR
    612 and
    613 \fB\-L\fR
    614 command options\&.
    615 .RE
    616 .PP
    617 \-x
    618 .RS 4
    619 Use
    620 \fBcertutil\fR
    621 to generate the signature for a certificate being created or added to a database, rather than obtaining a signature from a separate CA\&.
    622 .RE
    623 .PP
    624 \-y exp
    625 .RS 4
    626 Set an alternate exponent value to use in generating a new RSA public key for the database, instead of the default value of 65537\&. The available alternate values are 3 and 17\&.
    627 .RE
    628 .PP
    629 \-\-pss
    630 .RS 4
    631 Restrict the generated certificate (with the
    632 \fB\-S\fR
    633 option) or certificate request (with the
    634 \fB\-R\fR
    635 option) to be used with the RSA\-PSS signature scheme\&. This only works when the private key of the certificate or certificate request is RSA\&.
    636 .RE
    637 .PP
    638 \-\-pss\-sign
    639 .RS 4
    640 Sign the generated certificate with the RSA\-PSS signature scheme (with the
    641 \fB\-C\fR
    642 or
    643 \fB\-S\fR
    644 option)\&. This only works when the private key of the signer\*(Aqs certificate is RSA\&. If the signer\*(Aqs certificate is restricted to RSA\-PSS, it is not necessary to specify this option\&.
    645 .RE
    646 .PP
    647 \-z noise\-file
    648 .RS 4
    649 Read a seed value from the specified file to generate a new private and public key pair\&. This argument makes it possible to use hardware\-generated seed values or manually create a value from the keyboard\&. The minimum file size is 20 bytes\&.
    650 .RE
    651 .PP
    652 \-Z hashAlg
    653 .RS 4
    654 Specify the hash algorithm to use with the \-C, \-S or \-R command options\&. Possible keywords:
    655 .sp
    656 .RS 4
    657 .ie n \{\
    658 \h'-04'\(bu\h'+03'\c
    659 .\}
    660 .el \{\
    661 .sp -1
    662 .IP \(bu 2.3
    663 .\}
    664 MD2
    665 .RE
    666 .sp
    667 .RS 4
    668 .ie n \{\
    669 \h'-04'\(bu\h'+03'\c
    670 .\}
    671 .el \{\
    672 .sp -1
    673 .IP \(bu 2.3
    674 .\}
    675 MD4
    676 .RE
    677 .sp
    678 .RS 4
    679 .ie n \{\
    680 \h'-04'\(bu\h'+03'\c
    681 .\}
    682 .el \{\
    683 .sp -1
    684 .IP \(bu 2.3
    685 .\}
    686 MD5
    687 .RE
    688 .sp
    689 .RS 4
    690 .ie n \{\
    691 \h'-04'\(bu\h'+03'\c
    692 .\}
    693 .el \{\
    694 .sp -1
    695 .IP \(bu 2.3
    696 .\}
    697 SHA1
    698 .RE
    699 .sp
    700 .RS 4
    701 .ie n \{\
    702 \h'-04'\(bu\h'+03'\c
    703 .\}
    704 .el \{\
    705 .sp -1
    706 .IP \(bu 2.3
    707 .\}
    708 SHA224
    709 .RE
    710 .sp
    711 .RS 4
    712 .ie n \{\
    713 \h'-04'\(bu\h'+03'\c
    714 .\}
    715 .el \{\
    716 .sp -1
    717 .IP \(bu 2.3
    718 .\}
    719 SHA256
    720 .RE
    721 .sp
    722 .RS 4
    723 .ie n \{\
    724 \h'-04'\(bu\h'+03'\c
    725 .\}
    726 .el \{\
    727 .sp -1
    728 .IP \(bu 2.3
    729 .\}
    730 SHA384
    731 .RE
    732 .sp
    733 .RS 4
    734 .ie n \{\
    735 \h'-04'\(bu\h'+03'\c
    736 .\}
    737 .el \{\
    738 .sp -1
    739 .IP \(bu 2.3
    740 .\}
    741 SHA512
    742 .RE
    743 .RE
    744 .PP
    745 \-0 SSO_password
    746 .RS 4
    747 Set a site security officer password on a token\&.
    748 .RE
    749 .PP
    750 \-1 | \-\-keyUsage keyword,keyword
    751 .RS 4
    752 Set an X\&.509 V3 Certificate Type Extension in the certificate\&. There are several available keywords:
    753 .sp
    754 .RS 4
    755 .ie n \{\
    756 \h'-04'\(bu\h'+03'\c
    757 .\}
    758 .el \{\
    759 .sp -1
    760 .IP \(bu 2.3
    761 .\}
    762 digitalSignature
    763 .RE
    764 .sp
    765 .RS 4
    766 .ie n \{\
    767 \h'-04'\(bu\h'+03'\c
    768 .\}
    769 .el \{\
    770 .sp -1
    771 .IP \(bu 2.3
    772 .\}
    773 nonRepudiation
    774 .RE
    775 .sp
    776 .RS 4
    777 .ie n \{\
    778 \h'-04'\(bu\h'+03'\c
    779 .\}
    780 .el \{\
    781 .sp -1
    782 .IP \(bu 2.3
    783 .\}
    784 keyEncipherment
    785 .RE
    786 .sp
    787 .RS 4
    788 .ie n \{\
    789 \h'-04'\(bu\h'+03'\c
    790 .\}
    791 .el \{\
    792 .sp -1
    793 .IP \(bu 2.3
    794 .\}
    795 dataEncipherment
    796 .RE
    797 .sp
    798 .RS 4
    799 .ie n \{\
    800 \h'-04'\(bu\h'+03'\c
    801 .\}
    802 .el \{\
    803 .sp -1
    804 .IP \(bu 2.3
    805 .\}
    806 keyAgreement
    807 .RE
    808 .sp
    809 .RS 4
    810 .ie n \{\
    811 \h'-04'\(bu\h'+03'\c
    812 .\}
    813 .el \{\
    814 .sp -1
    815 .IP \(bu 2.3
    816 .\}
    817 certSigning
    818 .RE
    819 .sp
    820 .RS 4
    821 .ie n \{\
    822 \h'-04'\(bu\h'+03'\c
    823 .\}
    824 .el \{\
    825 .sp -1
    826 .IP \(bu 2.3
    827 .\}
    828 crlSigning
    829 .RE
    830 .sp
    831 .RS 4
    832 .ie n \{\
    833 \h'-04'\(bu\h'+03'\c
    834 .\}
    835 .el \{\
    836 .sp -1
    837 .IP \(bu 2.3
    838 .\}
    839 critical
    840 .RE
    841 .RE
    842 .PP
    843 \-2
    844 .RS 4
    845 Add a basic constraint extension to a certificate that is being created or added to a database\&. This extension supports the certificate chain verification process\&.
    846 \fBcertutil\fR
    847 prompts for the certificate constraint extension to select\&.
    848 .sp
    849 X\&.509 certificate extensions are described in RFC 5280\&.
    850 .RE
    851 .PP
    852 \-3
    853 .RS 4
    854 Add an authority key ID extension to a certificate that is being created or added to a database\&. This extension supports the identification of a particular certificate, from among multiple certificates associated with one subject name, as the correct issuer of a certificate\&. The Certificate Database Tool will prompt you to select the authority key ID extension\&.
    855 .sp
    856 X\&.509 certificate extensions are described in RFC 5280\&.
    857 .RE
    858 .PP
    859 \-4
    860 .RS 4
    861 Add a CRL distribution point extension to a certificate that is being created or added to a database\&. This extension identifies the URL of a certificate\*(Aqs associated certificate revocation list (CRL)\&.
    862 \fBcertutil\fR
    863 prompts for the URL\&.
    864 .sp
    865 X\&.509 certificate extensions are described in RFC 5280\&.
    866 .RE
    867 .PP
    868 \-5 | \-\-nsCertType keyword,keyword
    869 .RS 4
    870 Add an X\&.509 V3 certificate type extension to a certificate that is being created or added to the database\&. There are several available keywords:
    871 .sp
    872 .RS 4
    873 .ie n \{\
    874 \h'-04'\(bu\h'+03'\c
    875 .\}
    876 .el \{\
    877 .sp -1
    878 .IP \(bu 2.3
    879 .\}
    880 sslClient
    881 .RE
    882 .sp
    883 .RS 4
    884 .ie n \{\
    885 \h'-04'\(bu\h'+03'\c
    886 .\}
    887 .el \{\
    888 .sp -1
    889 .IP \(bu 2.3
    890 .\}
    891 sslServer
    892 .RE
    893 .sp
    894 .RS 4
    895 .ie n \{\
    896 \h'-04'\(bu\h'+03'\c
    897 .\}
    898 .el \{\
    899 .sp -1
    900 .IP \(bu 2.3
    901 .\}
    902 smime
    903 .RE
    904 .sp
    905 .RS 4
    906 .ie n \{\
    907 \h'-04'\(bu\h'+03'\c
    908 .\}
    909 .el \{\
    910 .sp -1
    911 .IP \(bu 2.3
    912 .\}
    913 objectSigning
    914 .RE
    915 .sp
    916 .RS 4
    917 .ie n \{\
    918 \h'-04'\(bu\h'+03'\c
    919 .\}
    920 .el \{\
    921 .sp -1
    922 .IP \(bu 2.3
    923 .\}
    924 sslCA
    925 .RE
    926 .sp
    927 .RS 4
    928 .ie n \{\
    929 \h'-04'\(bu\h'+03'\c
    930 .\}
    931 .el \{\
    932 .sp -1
    933 .IP \(bu 2.3
    934 .\}
    935 smimeCA
    936 .RE
    937 .sp
    938 .RS 4
    939 .ie n \{\
    940 \h'-04'\(bu\h'+03'\c
    941 .\}
    942 .el \{\
    943 .sp -1
    944 .IP \(bu 2.3
    945 .\}
    946 objectSigningCA
    947 .RE
    948 .sp
    949 .RS 4
    950 .ie n \{\
    951 \h'-04'\(bu\h'+03'\c
    952 .\}
    953 .el \{\
    954 .sp -1
    955 .IP \(bu 2.3
    956 .\}
    957 critical
    958 .RE
    959 .sp
    960 X\&.509 certificate extensions are described in RFC 5280\&.
    961 .RE
    962 .PP
    963 \-6 | \-\-extKeyUsage keyword,keyword
    964 .RS 4
    965 Add an extended key usage extension to a certificate that is being created or added to the database\&. Several keywords are available:
    966 .sp
    967 .RS 4
    968 .ie n \{\
    969 \h'-04'\(bu\h'+03'\c
    970 .\}
    971 .el \{\
    972 .sp -1
    973 .IP \(bu 2.3
    974 .\}
    975 serverAuth
    976 .RE
    977 .sp
    978 .RS 4
    979 .ie n \{\
    980 \h'-04'\(bu\h'+03'\c
    981 .\}
    982 .el \{\
    983 .sp -1
    984 .IP \(bu 2.3
    985 .\}
    986 clientAuth
    987 .RE
    988 .sp
    989 .RS 4
    990 .ie n \{\
    991 \h'-04'\(bu\h'+03'\c
    992 .\}
    993 .el \{\
    994 .sp -1
    995 .IP \(bu 2.3
    996 .\}
    997 codeSigning
    998 .RE
    999 .sp
   1000 .RS 4
   1001 .ie n \{\
   1002 \h'-04'\(bu\h'+03'\c
   1003 .\}
   1004 .el \{\
   1005 .sp -1
   1006 .IP \(bu 2.3
   1007 .\}
   1008 emailProtection
   1009 .RE
   1010 .sp
   1011 .RS 4
   1012 .ie n \{\
   1013 \h'-04'\(bu\h'+03'\c
   1014 .\}
   1015 .el \{\
   1016 .sp -1
   1017 .IP \(bu 2.3
   1018 .\}
   1019 timeStamp
   1020 .RE
   1021 .sp
   1022 .RS 4
   1023 .ie n \{\
   1024 \h'-04'\(bu\h'+03'\c
   1025 .\}
   1026 .el \{\
   1027 .sp -1
   1028 .IP \(bu 2.3
   1029 .\}
   1030 ocspResponder
   1031 .RE
   1032 .sp
   1033 .RS 4
   1034 .ie n \{\
   1035 \h'-04'\(bu\h'+03'\c
   1036 .\}
   1037 .el \{\
   1038 .sp -1
   1039 .IP \(bu 2.3
   1040 .\}
   1041 stepUp
   1042 .RE
   1043 .sp
   1044 .RS 4
   1045 .ie n \{\
   1046 \h'-04'\(bu\h'+03'\c
   1047 .\}
   1048 .el \{\
   1049 .sp -1
   1050 .IP \(bu 2.3
   1051 .\}
   1052 msTrustListSign
   1053 .RE
   1054 .sp
   1055 .RS 4
   1056 .ie n \{\
   1057 \h'-04'\(bu\h'+03'\c
   1058 .\}
   1059 .el \{\
   1060 .sp -1
   1061 .IP \(bu 2.3
   1062 .\}
   1063 critical
   1064 .RE
   1065 .sp
   1066 .RS 4
   1067 .ie n \{\
   1068 \h'-04'\(bu\h'+03'\c
   1069 .\}
   1070 .el \{\
   1071 .sp -1
   1072 .IP \(bu 2.3
   1073 .\}
   1074 x509Any
   1075 .RE
   1076 .sp
   1077 .RS 4
   1078 .ie n \{\
   1079 \h'-04'\(bu\h'+03'\c
   1080 .\}
   1081 .el \{\
   1082 .sp -1
   1083 .IP \(bu 2.3
   1084 .\}
   1085 ipsecIKE
   1086 .RE
   1087 .sp
   1088 .RS 4
   1089 .ie n \{\
   1090 \h'-04'\(bu\h'+03'\c
   1091 .\}
   1092 .el \{\
   1093 .sp -1
   1094 .IP \(bu 2.3
   1095 .\}
   1096 ipsecIKEEnd
   1097 .RE
   1098 .sp
   1099 .RS 4
   1100 .ie n \{\
   1101 \h'-04'\(bu\h'+03'\c
   1102 .\}
   1103 .el \{\
   1104 .sp -1
   1105 .IP \(bu 2.3
   1106 .\}
   1107 ipsecIKEIntermediate
   1108 .RE
   1109 .sp
   1110 .RS 4
   1111 .ie n \{\
   1112 \h'-04'\(bu\h'+03'\c
   1113 .\}
   1114 .el \{\
   1115 .sp -1
   1116 .IP \(bu 2.3
   1117 .\}
   1118 ipsecEnd
   1119 .RE
   1120 .sp
   1121 .RS 4
   1122 .ie n \{\
   1123 \h'-04'\(bu\h'+03'\c
   1124 .\}
   1125 .el \{\
   1126 .sp -1
   1127 .IP \(bu 2.3
   1128 .\}
   1129 ipsecTunnel
   1130 .RE
   1131 .sp
   1132 .RS 4
   1133 .ie n \{\
   1134 \h'-04'\(bu\h'+03'\c
   1135 .\}
   1136 .el \{\
   1137 .sp -1
   1138 .IP \(bu 2.3
   1139 .\}
   1140 ipsecUser
   1141 .RE
   1142 .sp
   1143 X\&.509 certificate extensions are described in RFC 5280\&.
   1144 .RE
   1145 .PP
   1146 \-7 emailAddrs
   1147 .RS 4
   1148 Add a comma\-separated list of email addresses to the subject alternative name extension of a certificate or certificate request that is being created or added to the database\&. Subject alternative name extensions are described in Section 4\&.2\&.1\&.7 of RFC 3280\&.
   1149 .RE
   1150 .PP
   1151 \-8 dns\-names
   1152 .RS 4
   1153 Add a comma\-separated list of DNS names to the subject alternative name extension of a certificate or certificate request that is being created or added to the database\&. Subject alternative name extensions are described in Section 4\&.2\&.1\&.7 of RFC 3280\&.
   1154 .RE
   1155 .PP
   1156 \-\-extAIA
   1157 .RS 4
   1158 Add the Authority Information Access extension to the certificate\&. X\&.509 certificate extensions are described in RFC 5280\&.
   1159 .RE
   1160 .PP
   1161 \-\-extSIA
   1162 .RS 4
   1163 Add the Subject Information Access extension to the certificate\&. X\&.509 certificate extensions are described in RFC 5280\&.
   1164 .RE
   1165 .PP
   1166 \-\-extCP
   1167 .RS 4
   1168 Add the Certificate Policies extension to the certificate\&. X\&.509 certificate extensions are described in RFC 5280\&.
   1169 .RE
   1170 .PP
   1171 \-\-extPM
   1172 .RS 4
   1173 Add the Policy Mappings extension to the certificate\&. X\&.509 certificate extensions are described in RFC 5280\&.
   1174 .RE
   1175 .PP
   1176 \-\-extPC
   1177 .RS 4
   1178 Add the Policy Constraints extension to the certificate\&. X\&.509 certificate extensions are described in RFC 5280\&.
   1179 .RE
   1180 .PP
   1181 \-\-extIA
   1182 .RS 4
   1183 Add the Inhibit Any Policy Access extension to the certificate\&. X\&.509 certificate extensions are described in RFC 5280\&.
   1184 .RE
   1185 .PP
   1186 \-\-extSKID
   1187 .RS 4
   1188 Add the Subject Key ID extension to the certificate\&. X\&.509 certificate extensions are described in RFC 5280\&.
   1189 .RE
   1190 .PP
   1191 \-\-extNC
   1192 .RS 4
   1193 Add a Name Constraint extension to the certificate\&. X\&.509 certificate extensions are described in RFC 5280\&.
   1194 .RE
   1195 .PP
   1196 \-\-extSAN type:name[,type:name]\&.\&.\&.
   1197 .RS 4
   1198 Create a Subject Alt Name extension with one or multiple names\&.
   1199 .sp
   1200 \-type: directory, dn, dns, edi, ediparty, email, ip, ipaddr, other, registerid, rfc822, uri, x400, x400addr
   1201 .RE
   1202 .PP
   1203 \-\-empty\-password
   1204 .RS 4
   1205 Use empty password when creating new certificate database with \-N\&.
   1206 .RE
   1207 .PP
   1208 \-\-keyAttrFlags attrflags
   1209 .RS 4
   1210 PKCS #11 key Attributes\&. Comma separated list of key attribute flags, selected from the following list of choices: {token | session} {public | private} {sensitive | insensitive} {modifiable | unmodifiable} {extractable | unextractable}
   1211 .RE
   1212 .PP
   1213 \-\-keyOpFlagsOn opflags, \-\-keyOpFlagsOff opflags
   1214 .RS 4
   1215 PKCS #11 key Operation Flags\&. Comma separated list of one or more of the following: {token | session} {public | private} {sensitive | insensitive} {modifiable | unmodifiable} {extractable | unextractable}
   1216 .RE
   1217 .PP
   1218 \-\-new\-n nickname
   1219 .RS 4
   1220 A new nickname, used when renaming a certificate\&.
   1221 .RE
   1222 .PP
   1223 \-\-source\-dir certdir
   1224 .RS 4
   1225 Identify the certificate database directory to upgrade\&.
   1226 .RE
   1227 .PP
   1228 \-\-source\-prefix certdir
   1229 .RS 4
   1230 Give the prefix of the certificate and key databases to upgrade\&.
   1231 .RE
   1232 .PP
   1233 \-\-upgrade\-id uniqueID
   1234 .RS 4
   1235 Give the unique ID of the database to upgrade\&.
   1236 .RE
   1237 .PP
   1238 \-\-upgrade\-token\-name name
   1239 .RS 4
   1240 Set the name of the token to use while it is being upgraded\&.
   1241 .RE
   1242 .PP
   1243 \-@ pwfile
   1244 .RS 4
   1245 Give the name of a password file to use for the database being upgraded\&.
   1246 .RE
   1247 .SH "USAGE AND EXAMPLES"
   1248 .PP
   1249 Most of the command options in the examples listed here have more arguments available\&. The arguments included in these examples are the most common ones or are used to illustrate a specific scenario\&. Use the
   1250 \fB\-H\fR
   1251 option to show the complete list of arguments for each command option\&.
   1252 .PP
   1253 \fBCreating New Security Databases\fR
   1254 .PP
   1255 Certificates, keys, and security modules related to managing certificates are stored in three related databases:
   1256 .sp
   1257 .RS 4
   1258 .ie n \{\
   1259 \h'-04'\(bu\h'+03'\c
   1260 .\}
   1261 .el \{\
   1262 .sp -1
   1263 .IP \(bu 2.3
   1264 .\}
   1265 cert8\&.db or cert9\&.db
   1266 .RE
   1267 .sp
   1268 .RS 4
   1269 .ie n \{\
   1270 \h'-04'\(bu\h'+03'\c
   1271 .\}
   1272 .el \{\
   1273 .sp -1
   1274 .IP \(bu 2.3
   1275 .\}
   1276 key3\&.db or key4\&.db
   1277 .RE
   1278 .sp
   1279 .RS 4
   1280 .ie n \{\
   1281 \h'-04'\(bu\h'+03'\c
   1282 .\}
   1283 .el \{\
   1284 .sp -1
   1285 .IP \(bu 2.3
   1286 .\}
   1287 secmod\&.db or pkcs11\&.txt
   1288 .RE
   1289 .PP
   1290 These databases must be created before certificates or keys can be generated\&.
   1291 .sp
   1292 .if n \{\
   1293 .RS 4
   1294 .\}
   1295 .nf
   1296 certutil \-N \-d directory
   1297 .fi
   1298 .if n \{\
   1299 .RE
   1300 .\}
   1301 .PP
   1302 \fBCreating a Certificate Request\fR
   1303 .PP
   1304 A certificate request contains most or all of the information that is used to generate the final certificate\&. This request is submitted separately to a certificate authority and is then approved by some mechanism (automatically or by human review)\&. Once the request is approved, then the certificate is generated\&.
   1305 .sp
   1306 .if n \{\
   1307 .RS 4
   1308 .\}
   1309 .nf
   1310 $ certutil \-R \-k key\-type\-or\-id [\-q pqgfile|curve\-name] \-g key\-size \-s subject [\-h tokenname] \-d directory [\-p phone] [\-o output\-file] [\-a]
   1311 .fi
   1312 .if n \{\
   1313 .RE
   1314 .\}
   1315 .PP
   1316 The
   1317 \fB\-R\fR
   1318 command options requires four arguments:
   1319 .sp
   1320 .RS 4
   1321 .ie n \{\
   1322 \h'-04'\(bu\h'+03'\c
   1323 .\}
   1324 .el \{\
   1325 .sp -1
   1326 .IP \(bu 2.3
   1327 .\}
   1328 \fB\-k\fR
   1329 to specify either the key type to generate or, when renewing a certificate, the existing key pair to use
   1330 .RE
   1331 .sp
   1332 .RS 4
   1333 .ie n \{\
   1334 \h'-04'\(bu\h'+03'\c
   1335 .\}
   1336 .el \{\
   1337 .sp -1
   1338 .IP \(bu 2.3
   1339 .\}
   1340 \fB\-g\fR
   1341 to set the keysize of the key to generate
   1342 .RE
   1343 .sp
   1344 .RS 4
   1345 .ie n \{\
   1346 \h'-04'\(bu\h'+03'\c
   1347 .\}
   1348 .el \{\
   1349 .sp -1
   1350 .IP \(bu 2.3
   1351 .\}
   1352 \fB\-s\fR
   1353 to set the subject name of the certificate
   1354 .RE
   1355 .sp
   1356 .RS 4
   1357 .ie n \{\
   1358 \h'-04'\(bu\h'+03'\c
   1359 .\}
   1360 .el \{\
   1361 .sp -1
   1362 .IP \(bu 2.3
   1363 .\}
   1364 \fB\-d\fR
   1365 to give the security database directory
   1366 .RE
   1367 .PP
   1368 The new certificate request can be output in ASCII format (\fB\-a\fR) or can be written to a specified file (\fB\-o\fR)\&.
   1369 .PP
   1370 For example:
   1371 .sp
   1372 .if n \{\
   1373 .RS 4
   1374 .\}
   1375 .nf
   1376 $ certutil \-R \-k rsa \-g 1024 \-s "CN=John Smith,O=Example Corp,L=Mountain View,ST=California,C=US" \-d $HOME/nssdb \-p 650\-555\-0123 \-a \-o cert\&.cer
   1377 
   1378 Generating key\&.  This may take a few moments\&.\&.\&.
   1379 
   1380 .fi
   1381 .if n \{\
   1382 .RE
   1383 .\}
   1384 .PP
   1385 \fBCreating a Certificate\fR
   1386 .PP
   1387 A valid certificate must be issued by a trusted CA\&. This can be done by specifying a CA certificate (\fB\-c\fR) that is stored in the certificate database\&. If a CA key pair is not available, you can create a self\-signed certificate using the
   1388 \fB\-x\fR
   1389 argument with the
   1390 \fB\-S\fR
   1391 command option\&.
   1392 .sp
   1393 .if n \{\
   1394 .RS 4
   1395 .\}
   1396 .nf
   1397 $ certutil \-S \-k rsa|dsa|ec \-n certname \-s subject [\-c issuer |\-x] \-t trustargs \-d directory [\-m serial\-number] [\-v valid\-months] [\-w offset\-months] [\-p phone] [\-1] [\-2] [\-3] [\-4] [\-5 keyword] [\-6 keyword] [\-7 emailAddress] [\-8 dns\-names] [\-\-extAIA] [\-\-extSIA] [\-\-extCP] [\-\-extPM] [\-\-extPC] [\-\-extIA] [\-\-extSKID]
   1398 .fi
   1399 .if n \{\
   1400 .RE
   1401 .\}
   1402 .PP
   1403 The series of numbers and
   1404 \fB\-\-ext*\fR
   1405 options set certificate extensions that can be added to the certificate when it is generated by the CA\&. Interactive prompts will result\&.
   1406 .PP
   1407 For example, this creates a self\-signed certificate:
   1408 .sp
   1409 .if n \{\
   1410 .RS 4
   1411 .\}
   1412 .nf
   1413 $ certutil \-S \-s "CN=Example CA" \-n my\-ca\-cert \-x \-t "C,C,C" \-1 \-2 \-5 \-m 3650
   1414 .fi
   1415 .if n \{\
   1416 .RE
   1417 .\}
   1418 .PP
   1419 The interative prompts for key usage and whether any extensions are critical and responses have been ommitted for brevity\&.
   1420 .PP
   1421 From there, new certificates can reference the self\-signed certificate:
   1422 .sp
   1423 .if n \{\
   1424 .RS 4
   1425 .\}
   1426 .nf
   1427 $ certutil \-S \-s "CN=My Server Cert" \-n my\-server\-cert \-c "my\-ca\-cert" \-t ",," \-1 \-5 \-6 \-8 \-m 730
   1428 .fi
   1429 .if n \{\
   1430 .RE
   1431 .\}
   1432 .PP
   1433 \fBGenerating a Certificate from a Certificate Request\fR
   1434 .PP
   1435 When a certificate request is created, a certificate can be generated by using the request and then referencing a certificate authority signing certificate (the
   1436 \fIissuer\fR
   1437 specified in the
   1438 \fB\-c\fR
   1439 argument)\&. The issuing certificate must be in the certificate database in the specified directory\&.
   1440 .sp
   1441 .if n \{\
   1442 .RS 4
   1443 .\}
   1444 .nf
   1445 certutil \-C \-c issuer \-i cert\-request\-file \-o output\-file [\-m serial\-number] [\-v valid\-months] [\-w offset\-months] \-d directory [\-1] [\-2] [\-3] [\-4] [\-5 keyword] [\-6 keyword] [\-7 emailAddress] [\-8 dns\-names]
   1446 .fi
   1447 .if n \{\
   1448 .RE
   1449 .\}
   1450 .PP
   1451 For example:
   1452 .sp
   1453 .if n \{\
   1454 .RS 4
   1455 .\}
   1456 .nf
   1457 $ certutil \-C \-c "my\-ca\-cert" \-i /home/certs/cert\&.req \-o cert\&.cer \-m 010 \-v 12 \-w 1 \-d $HOME/nssdb \-1 nonRepudiation,dataEncipherment \-5 sslClient \-6 clientAuth \-7 jsmith@example\&.com
   1458 .fi
   1459 .if n \{\
   1460 .RE
   1461 .\}
   1462 .PP
   1463 \fBListing Certificates\fR
   1464 .PP
   1465 The
   1466 \fB\-L\fR
   1467 command option lists all of the certificates listed in the certificate database\&. The path to the directory (\fB\-d\fR) is required\&.
   1468 .sp
   1469 .if n \{\
   1470 .RS 4
   1471 .\}
   1472 .nf
   1473 $ certutil \-L \-d /home/my/sharednssdb
   1474 
   1475 Certificate Nickname                                         Trust Attributes
   1476                                                             SSL,S/MIME,JAR/XPI
   1477 
   1478 CA Administrator of Instance pki\-ca1\*(Aqs Example Domain ID     u,u,u
   1479 TPS Administrator\*(Aqs Example Domain ID                        u,u,u
   1480 Google Internet Authority                                    ,,   
   1481 Certificate Authority \- Example Domain                       CT,C,C
   1482 .fi
   1483 .if n \{\
   1484 .RE
   1485 .\}
   1486 .PP
   1487 Using additional arguments with
   1488 \fB\-L\fR
   1489 can return and print the information for a single, specific certificate\&. For example, the
   1490 \fB\-n\fR
   1491 argument passes the certificate name, while the
   1492 \fB\-a\fR
   1493 argument prints the certificate in ASCII format:
   1494 .sp
   1495 .if n \{\
   1496 .RS 4
   1497 .\}
   1498 .nf
   1499 $ certutil \-L \-d $HOME/nssdb \-a \-n my\-ca\-cert
   1500 \-\-\-\-\-BEGIN CERTIFICATE\-\-\-\-\-
   1501 MIIB1DCCAT2gAwIBAgICDkIwDQYJKoZIhvcNAQEFBQAwFTETMBEGA1UEAxMKRXhh
   1502 bXBsZSBDQTAeFw0xMzAzMTMxOTEwMjlaFw0xMzA2MTMxOTEwMjlaMBUxEzARBgNV
   1503 BAMTCkV4YW1wbGUgQ0EwgZ8wDQYJKoZIhvcNAQEBBQADgY0AMIGJAoGBAJ4Kzqvz
   1504 JyBVgFqDXRYSyTBNw1DrxUU/3GvWA/ngjAwHEv0Cul/6sO/gsCvnABHiH6unns6x
   1505 XRzPORlC2WY3gkk7vmlsLvYpyecNazAi/NAwVnU/66HOsaoVFWE+gBQo99UrN2yk
   1506 0BiK/GMFlLm5dXQROgA9ZKKyFdI0LIXtf6SbAgMBAAGjMzAxMBEGCWCGSAGG+EIB
   1507 AQQEAwIHADAMBgNVHRMEBTADAQH/MA4GA1UdDwEB/wQEAwICBDANBgkqhkiG9w0B
   1508 AQUFAAOBgQA6chkzkACN281d1jKMrc+RHG2UMaQyxiteaLVZO+Ro1nnRUvseDf09
   1509 XKYFwPMJjWCihVku6bw/ihZfuMHhxK22Nue6inNQ6eDu7WmrqL8z3iUrQwxs+WiF
   1510 ob2rb8XRVVJkzXdXxlk4uo3UtNvw8sAz7sWD71qxKaIHU5q49zijfg==
   1511 \-\-\-\-\-END CERTIFICATE\-\-\-\-\-
   1512 .fi
   1513 .if n \{\
   1514 .RE
   1515 .\}
   1516 .PP
   1517 For a human\-readable display
   1518 .sp
   1519 .if n \{\
   1520 .RS 4
   1521 .\}
   1522 .nf
   1523 $ certutil \-L \-d $HOME/nssdb \-n my\-ca\-cert
   1524 Certificate:
   1525    Data:
   1526        Version: 3 (0x2)
   1527        Serial Number: 3650 (0xe42)
   1528        Signature Algorithm: PKCS #1 SHA\-1 With RSA Encryption
   1529        Issuer: "CN=Example CA"
   1530        Validity:
   1531            Not Before: Wed Mar 13 19:10:29 2013
   1532            Not After : Thu Jun 13 19:10:29 2013
   1533        Subject: "CN=Example CA"
   1534        Subject Public Key Info:
   1535            Public Key Algorithm: PKCS #1 RSA Encryption
   1536            RSA Public Key:
   1537                Modulus:
   1538                    9e:0a:ce:ab:f3:27:20:55:80:5a:83:5d:16:12:c9:30:
   1539                    4d:c3:50:eb:c5:45:3f:dc:6b:d6:03:f9:e0:8c:0c:07:
   1540                    12:fd:02:ba:5f:fa:b0:ef:e0:b0:2b:e7:00:11:e2:1f:
   1541                    ab:a7:9e:ce:b1:5d:1c:cf:39:19:42:d9:66:37:82:49:
   1542                    3b:be:69:6c:2e:f6:29:c9:e7:0d:6b:30:22:fc:d0:30:
   1543                    56:75:3f:eb:a1:ce:b1:aa:15:15:61:3e:80:14:28:f7:
   1544                    d5:2b:37:6c:a4:d0:18:8a:fc:63:05:94:b9:b9:75:74:
   1545                    11:3a:00:3d:64:a2:b2:15:d2:34:2c:85:ed:7f:a4:9b
   1546                Exponent: 65537 (0x10001)
   1547        Signed Extensions:
   1548            Name: Certificate Type
   1549            Data: none
   1550 
   1551            Name: Certificate Basic Constraints
   1552            Data: Is a CA with no maximum path length\&.
   1553 
   1554            Name: Certificate Key Usage
   1555            Critical: True
   1556            Usages: Certificate Signing
   1557 
   1558    Signature Algorithm: PKCS #1 SHA\-1 With RSA Encryption
   1559    Signature:
   1560        3a:72:19:33:90:00:8d:db:cd:5d:d6:32:8c:ad:cf:91:
   1561        1c:6d:94:31:a4:32:c6:2b:5e:68:b5:59:3b:e4:68:d6:
   1562        79:d1:52:fb:1e:0d:fd:3d:5c:a6:05:c0:f3:09:8d:60:
   1563        a2:85:59:2e:e9:bc:3f:8a:16:5f:b8:c1:e1:c4:ad:b6:
   1564        36:e7:ba:8a:73:50:e9:e0:ee:ed:69:ab:a8:bf:33:de:
   1565        25:2b:43:0c:6c:f9:68:85:a1:bd:ab:6f:c5:d1:55:52:
   1566        64:cd:77:57:c6:59:38:ba:8d:d4:b4:db:f0:f2:c0:33:
   1567        ee:c5:83:ef:5a:b1:29:a2:07:53:9a:b8:f7:38:a3:7e
   1568    Fingerprint (MD5):
   1569        86:D8:A5:8B:8A:26:BE:9E:17:A8:7B:66:10:6B:27:80
   1570    Fingerprint (SHA1):
   1571        48:78:09:EF:C5:D4:0C:BD:D2:64:45:59:EB:03:13:15:F7:A9:D6:F7
   1572 
   1573    Certificate Trust Flags:
   1574        SSL Flags:
   1575            Valid CA
   1576            Trusted CA
   1577            User
   1578        Email Flags:
   1579            Valid CA
   1580            Trusted CA
   1581            User
   1582        Object Signing Flags:
   1583            Valid CA
   1584            Trusted CA
   1585            User
   1586 
   1587 .fi
   1588 .if n \{\
   1589 .RE
   1590 .\}
   1591 .PP
   1592 \fBListing Keys\fR
   1593 .PP
   1594 Keys are the original material used to encrypt certificate data\&. The keys generated for certificates are stored separately, in the key database\&.
   1595 .PP
   1596 To list all keys in the database, use the
   1597 \fB\-K\fR
   1598 command option and the (required)
   1599 \fB\-d\fR
   1600 argument to give the path to the directory\&.
   1601 .sp
   1602 .if n \{\
   1603 .RS 4
   1604 .\}
   1605 .nf
   1606 $ certutil \-K \-d $HOME/nssdb
   1607 certutil: Checking token "NSS Certificate DB" in slot "NSS User Private Key and Certificate Services                  "
   1608 < 0> rsa      455a6673bde9375c2887ec8bf8016b3f9f35861d   Thawte Freemail Member\*(Aqs Thawte Consulting (Pty) Ltd\&. ID
   1609 < 1> rsa      40defeeb522ade11090eacebaaf1196a172127df   Example Domain Administrator Cert
   1610 < 2> rsa      1d0b06f44f6c03842f7d4f4a1dc78b3bcd1b85a5   John Smith user cert
   1611 .fi
   1612 .if n \{\
   1613 .RE
   1614 .\}
   1615 .PP
   1616 There are ways to narrow the keys listed in the search results:
   1617 .sp
   1618 .RS 4
   1619 .ie n \{\
   1620 \h'-04'\(bu\h'+03'\c
   1621 .\}
   1622 .el \{\
   1623 .sp -1
   1624 .IP \(bu 2.3
   1625 .\}
   1626 To return a specific key, use the
   1627 \fB\-n\fR
   1628 \fIname\fR
   1629 argument with the name of the key\&.
   1630 .RE
   1631 .sp
   1632 .RS 4
   1633 .ie n \{\
   1634 \h'-04'\(bu\h'+03'\c
   1635 .\}
   1636 .el \{\
   1637 .sp -1
   1638 .IP \(bu 2.3
   1639 .\}
   1640 If there are multiple security devices loaded, then the
   1641 \fB\-h\fR
   1642 \fItokenname\fR
   1643 argument can search a specific token or all tokens\&.
   1644 .RE
   1645 .sp
   1646 .RS 4
   1647 .ie n \{\
   1648 \h'-04'\(bu\h'+03'\c
   1649 .\}
   1650 .el \{\
   1651 .sp -1
   1652 .IP \(bu 2.3
   1653 .\}
   1654 If there are multiple key types available, then the
   1655 \fB\-k\fR
   1656 \fIkey\-type\fR
   1657 argument can search a specific type of key, like RSA, DSA, or ECC\&.
   1658 .RE
   1659 .PP
   1660 \fBListing Security Modules\fR
   1661 .PP
   1662 The devices that can be used to store certificates \-\- both internal databases and external devices like smart cards \-\- are recognized and used by loading security modules\&. The
   1663 \fB\-U\fR
   1664 command option lists all of the security modules listed in the
   1665 secmod\&.db
   1666 database\&. The path to the directory (\fB\-d\fR) is required\&.
   1667 .sp
   1668 .if n \{\
   1669 .RS 4
   1670 .\}
   1671 .nf
   1672 $ certutil \-U \-d /home/my/sharednssdb
   1673 
   1674    slot: NSS User Private Key and Certificate Services                  
   1675   token: NSS Certificate DB
   1676     uri: pkcs11:token=NSS%20Certificate%20DB;manufacturer=Mozilla%20Foundation;serial=0000000000000000;model=NSS%203
   1677 
   1678    slot: NSS Internal Cryptographic Services                            
   1679   token: NSS Generic Crypto Services
   1680     uri: pkcs11:token=NSS%20Generic%20Crypto%20Services;manufacturer=Mozilla%20Foundation;serial=0000000000000000;model=NSS%203
   1681 .fi
   1682 .if n \{\
   1683 .RE
   1684 .\}
   1685 .PP
   1686 \fBAdding Certificates to the Database\fR
   1687 .PP
   1688 Existing certificates or certificate requests can be added manually to the certificate database, even if they were generated elsewhere\&. This uses the
   1689 \fB\-A\fR
   1690 command option\&.
   1691 .sp
   1692 .if n \{\
   1693 .RS 4
   1694 .\}
   1695 .nf
   1696 certutil \-A \-n certname \-t trustargs \-d directory [\-a] [\-i input\-file]
   1697 .fi
   1698 .if n \{\
   1699 .RE
   1700 .\}
   1701 .PP
   1702 For example:
   1703 .sp
   1704 .if n \{\
   1705 .RS 4
   1706 .\}
   1707 .nf
   1708 $ certutil \-A \-n "CN=My SSL Certificate" \-t ",," \-d /home/my/sharednssdb \-i /home/example\-certs/cert\&.cer
   1709 .fi
   1710 .if n \{\
   1711 .RE
   1712 .\}
   1713 .PP
   1714 A related command option,
   1715 \fB\-E\fR, is used specifically to add email certificates to the certificate database\&. The
   1716 \fB\-E\fR
   1717 command has the same arguments as the
   1718 \fB\-A\fR
   1719 command\&. The trust arguments for certificates have the format
   1720 \fISSL,S/MIME,Code\-signing\fR, so the middle trust settings relate most to email certificates (though the others can be set)\&. For example:
   1721 .sp
   1722 .if n \{\
   1723 .RS 4
   1724 .\}
   1725 .nf
   1726 $ certutil \-E \-n "CN=John Smith Email Cert" \-t ",P," \-d /home/my/sharednssdb \-i /home/example\-certs/email\&.cer
   1727 .fi
   1728 .if n \{\
   1729 .RE
   1730 .\}
   1731 .PP
   1732 \fBDeleting Certificates to the Database\fR
   1733 .PP
   1734 Certificates can be deleted from a database using the
   1735 \fB\-D\fR
   1736 option\&. The only required options are to give the security database directory and to identify the certificate nickname\&.
   1737 .sp
   1738 .if n \{\
   1739 .RS 4
   1740 .\}
   1741 .nf
   1742 certutil \-D \-d directory \-n "nickname"
   1743 .fi
   1744 .if n \{\
   1745 .RE
   1746 .\}
   1747 .PP
   1748 For example:
   1749 .sp
   1750 .if n \{\
   1751 .RS 4
   1752 .\}
   1753 .nf
   1754 $ certutil \-D \-d /home/my/sharednssdb \-n "my\-ssl\-cert"
   1755 .fi
   1756 .if n \{\
   1757 .RE
   1758 .\}
   1759 .PP
   1760 \fBValidating Certificates\fR
   1761 .PP
   1762 A certificate contains an expiration date in itself, and expired certificates are easily rejected\&. However, certificates can also be revoked before they hit their expiration date\&. Checking whether a certificate has been revoked requires validating the certificate\&. Validation can also be used to ensure that the certificate is only used for the purposes it was initially issued for\&. Validation is carried out by the
   1763 \fB\-V\fR
   1764 command option\&.
   1765 .sp
   1766 .if n \{\
   1767 .RS 4
   1768 .\}
   1769 .nf
   1770 certutil \-V \-n certificate\-name [\-b time] [\-e] [\-u cert\-usage] \-d directory
   1771 .fi
   1772 .if n \{\
   1773 .RE
   1774 .\}
   1775 .PP
   1776 For example, to validate an email certificate:
   1777 .sp
   1778 .if n \{\
   1779 .RS 4
   1780 .\}
   1781 .nf
   1782 $ certutil \-V \-n "John Smith\*(Aqs Email Cert" \-e \-u S,R \-d /home/my/sharednssdb
   1783 .fi
   1784 .if n \{\
   1785 .RE
   1786 .\}
   1787 .PP
   1788 \fBModifying Certificate Trust Settings\fR
   1789 .PP
   1790 The trust settings (which relate to the operations that a certificate is allowed to be used for) can be changed after a certificate is created or added to the database\&. This is especially useful for CA certificates, but it can be performed for any type of certificate\&.
   1791 .sp
   1792 .if n \{\
   1793 .RS 4
   1794 .\}
   1795 .nf
   1796 certutil \-M \-n certificate\-name \-t trust\-args \-d directory
   1797 .fi
   1798 .if n \{\
   1799 .RE
   1800 .\}
   1801 .PP
   1802 For example:
   1803 .sp
   1804 .if n \{\
   1805 .RS 4
   1806 .\}
   1807 .nf
   1808 $ certutil \-M \-n "My CA Certificate" \-d /home/my/sharednssdb \-t "CT,CT,CT"
   1809 .fi
   1810 .if n \{\
   1811 .RE
   1812 .\}
   1813 .PP
   1814 \fBPrinting the Certificate Chain\fR
   1815 .PP
   1816 Certificates can be issued in
   1817 \fIchains\fR
   1818 because every certificate authority itself has a certificate; when a CA issues a certificate, it essentially stamps that certificate with its own fingerprint\&. The
   1819 \fB\-O\fR
   1820 prints the full chain of a certificate, going from the initial CA (the root CA) through ever intermediary CA to the actual certificate\&. For example, for an email certificate with two CAs in the chain:
   1821 .sp
   1822 .if n \{\
   1823 .RS 4
   1824 .\}
   1825 .nf
   1826 $ certutil \-d /home/my/sharednssdb \-O \-n "jsmith@example\&.com"
   1827 "Builtin Object Token:Thawte Personal Freemail CA" [E=personal\-freemail@thawte\&.com,CN=Thawte Personal Freemail CA,OU=Certification Services Division,O=Thawte Consulting,L=Cape Town,ST=Western Cape,C=ZA]
   1828 
   1829  "Thawte Personal Freemail Issuing CA \- Thawte Consulting" [CN=Thawte Personal Freemail Issuing CA,O=Thawte Consulting (Pty) Ltd\&.,C=ZA]
   1830 
   1831    "(null)" [E=jsmith@example\&.com,CN=Thawte Freemail Member]
   1832 .fi
   1833 .if n \{\
   1834 .RE
   1835 .\}
   1836 .PP
   1837 \fBResetting a Token\fR
   1838 .PP
   1839 The device which stores certificates \-\- both external hardware devices and internal software databases \-\- can be blanked and reused\&. This operation is performed on the device which stores the data, not directly on the security databases, so the location must be referenced through the token name (\fB\-h\fR) as well as any directory path\&. If there is no external token used, the default value is internal\&.
   1840 .sp
   1841 .if n \{\
   1842 .RS 4
   1843 .\}
   1844 .nf
   1845 certutil \-T \-d directory \-h token\-name \-0 security\-officer\-password
   1846 .fi
   1847 .if n \{\
   1848 .RE
   1849 .\}
   1850 .PP
   1851 Many networks have dedicated personnel who handle changes to security tokens (the security officer)\&. This person must supply the password to access the specified token\&. For example:
   1852 .sp
   1853 .if n \{\
   1854 .RS 4
   1855 .\}
   1856 .nf
   1857 $ certutil \-T \-d /home/my/sharednssdb \-h nethsm \-0 secret
   1858 .fi
   1859 .if n \{\
   1860 .RE
   1861 .\}
   1862 .PP
   1863 \fBUpgrading or Merging the Security Databases\fR
   1864 .PP
   1865 Many networks or applications may be using older BerkeleyDB versions of the certificate database (cert8\&.db)\&. Databases can be upgraded to the new SQLite version of the database (cert9\&.db) using the
   1866 \fB\-\-upgrade\-merge\fR
   1867 command option or existing databases can be merged with the new
   1868 cert9\&.db
   1869 databases using the
   1870 \fB\-\-\-merge\fR
   1871 command\&.
   1872 .PP
   1873 The
   1874 \fB\-\-upgrade\-merge\fR
   1875 command must give information about the original database and then use the standard arguments (like
   1876 \fB\-d\fR) to give the information about the new databases\&. The command also requires information that the tool uses for the process to upgrade and write over the original database\&.
   1877 .sp
   1878 .if n \{\
   1879 .RS 4
   1880 .\}
   1881 .nf
   1882 certutil \-\-upgrade\-merge \-d directory [\-P dbprefix] \-\-source\-dir directory \-\-source\-prefix dbprefix \-\-upgrade\-id id \-\-upgrade\-token\-name name [\-@ password\-file]
   1883 .fi
   1884 .if n \{\
   1885 .RE
   1886 .\}
   1887 .PP
   1888 For example:
   1889 .sp
   1890 .if n \{\
   1891 .RS 4
   1892 .\}
   1893 .nf
   1894 $ certutil \-\-upgrade\-merge \-d /home/my/sharednssdb \-\-source\-dir /opt/my\-app/alias/ \-\-source\-prefix serverapp\- \-\-upgrade\-id 1 \-\-upgrade\-token\-name internal
   1895 .fi
   1896 .if n \{\
   1897 .RE
   1898 .\}
   1899 .PP
   1900 The
   1901 \fB\-\-merge\fR
   1902 command only requires information about the location of the original database; since it doesn\*(Aqt change the format of the database, it can write over information without performing interim step\&.
   1903 .sp
   1904 .if n \{\
   1905 .RS 4
   1906 .\}
   1907 .nf
   1908 certutil \-\-merge \-d directory [\-P dbprefix] \-\-source\-dir directory \-\-source\-prefix dbprefix [\-@ password\-file]
   1909 .fi
   1910 .if n \{\
   1911 .RE
   1912 .\}
   1913 .PP
   1914 For example:
   1915 .sp
   1916 .if n \{\
   1917 .RS 4
   1918 .\}
   1919 .nf
   1920 $ certutil \-\-merge \-d /home/my/sharednssdb \-\-source\-dir /opt/my\-app/alias/ \-\-source\-prefix serverapp\-
   1921 .fi
   1922 .if n \{\
   1923 .RE
   1924 .\}
   1925 .PP
   1926 \fBRunning certutil Commands from a Batch File\fR
   1927 .PP
   1928 A series of commands can be run sequentially from a text file with the
   1929 \fB\-B\fR
   1930 command option\&. The only argument for this specifies the input file\&.
   1931 .sp
   1932 .if n \{\
   1933 .RS 4
   1934 .\}
   1935 .nf
   1936 $ certutil \-B \-i /path/to/batch\-file
   1937 .fi
   1938 .if n \{\
   1939 .RE
   1940 .\}
   1941 .SH "NSS DATABASE TYPES"
   1942 .PP
   1943 NSS originally used BerkeleyDB databases to store security information\&. The last versions of these
   1944 \fIlegacy\fR
   1945 databases are:
   1946 .sp
   1947 .RS 4
   1948 .ie n \{\
   1949 \h'-04'\(bu\h'+03'\c
   1950 .\}
   1951 .el \{\
   1952 .sp -1
   1953 .IP \(bu 2.3
   1954 .\}
   1955 cert8\&.db for certificates
   1956 .RE
   1957 .sp
   1958 .RS 4
   1959 .ie n \{\
   1960 \h'-04'\(bu\h'+03'\c
   1961 .\}
   1962 .el \{\
   1963 .sp -1
   1964 .IP \(bu 2.3
   1965 .\}
   1966 key3\&.db for keys
   1967 .RE
   1968 .sp
   1969 .RS 4
   1970 .ie n \{\
   1971 \h'-04'\(bu\h'+03'\c
   1972 .\}
   1973 .el \{\
   1974 .sp -1
   1975 .IP \(bu 2.3
   1976 .\}
   1977 secmod\&.db for PKCS #11 module information
   1978 .RE
   1979 .PP
   1980 BerkeleyDB has performance limitations, though, which prevent it from being easily used by multiple applications simultaneously\&. NSS has some flexibility that allows applications to use their own, independent database engine while keeping a shared database and working around the access issues\&. Still, NSS requires more flexibility to provide a truly shared security database\&.
   1981 .PP
   1982 In 2009, NSS introduced a new set of databases that are SQLite databases rather than BerkeleyDB\&. These new databases provide more accessibility and performance:
   1983 .sp
   1984 .RS 4
   1985 .ie n \{\
   1986 \h'-04'\(bu\h'+03'\c
   1987 .\}
   1988 .el \{\
   1989 .sp -1
   1990 .IP \(bu 2.3
   1991 .\}
   1992 cert9\&.db for certificates
   1993 .RE
   1994 .sp
   1995 .RS 4
   1996 .ie n \{\
   1997 \h'-04'\(bu\h'+03'\c
   1998 .\}
   1999 .el \{\
   2000 .sp -1
   2001 .IP \(bu 2.3
   2002 .\}
   2003 key4\&.db for keys
   2004 .RE
   2005 .sp
   2006 .RS 4
   2007 .ie n \{\
   2008 \h'-04'\(bu\h'+03'\c
   2009 .\}
   2010 .el \{\
   2011 .sp -1
   2012 .IP \(bu 2.3
   2013 .\}
   2014 pkcs11\&.txt, a listing of all of the PKCS #11 modules, contained in a new subdirectory in the security databases directory
   2015 .RE
   2016 .PP
   2017 Because the SQLite databases are designed to be shared, these are the
   2018 \fIshared\fR
   2019 database type\&. The shared database type is preferred; the legacy format is included for backward compatibility\&.
   2020 .PP
   2021 By default, the tools (\fBcertutil\fR,
   2022 \fBpk12util\fR,
   2023 \fBmodutil\fR) assume that the given security databases use the SQLite type\&. Using the legacy databases must be manually specified by using the
   2024 \fBdbm:\fR
   2025 prefix with the given security directory\&. For example:
   2026 .sp
   2027 .if n \{\
   2028 .RS 4
   2029 .\}
   2030 .nf
   2031 $ certutil \-L \-d dbm:/home/my/sharednssdb
   2032 .fi
   2033 .if n \{\
   2034 .RE
   2035 .\}
   2036 .PP
   2037 To set the legacy database type as the default type for the tools, set the
   2038 \fBNSS_DEFAULT_DB_TYPE\fR
   2039 environment variable to
   2040 \fBdbm\fR:
   2041 .sp
   2042 .if n \{\
   2043 .RS 4
   2044 .\}
   2045 .nf
   2046 export NSS_DEFAULT_DB_TYPE="dbm"
   2047 .fi
   2048 .if n \{\
   2049 .RE
   2050 .\}
   2051 .PP
   2052 This line can be set added to the
   2053 ~/\&.bashrc
   2054 file to make the change permanent\&.
   2055 .sp
   2056 .RS 4
   2057 .ie n \{\
   2058 \h'-04'\(bu\h'+03'\c
   2059 .\}
   2060 .el \{\
   2061 .sp -1
   2062 .IP \(bu 2.3
   2063 .\}
   2064 https://wiki\&.mozilla\&.org/NSS_Shared_DB_Howto
   2065 .RE
   2066 .PP
   2067 For an engineering draft on the changes in the shared NSS databases, see the NSS project wiki:
   2068 .sp
   2069 .RS 4
   2070 .ie n \{\
   2071 \h'-04'\(bu\h'+03'\c
   2072 .\}
   2073 .el \{\
   2074 .sp -1
   2075 .IP \(bu 2.3
   2076 .\}
   2077 https://wiki\&.mozilla\&.org/NSS_Shared_DB
   2078 .RE
   2079 .SH "SEE ALSO"
   2080 .PP
   2081 pk12util (1)
   2082 .PP
   2083 modutil (1)
   2084 .PP
   2085 \fBcertutil\fR
   2086 has arguments or operations that use features defined in several IETF RFCs\&.
   2087 .sp
   2088 .RS 4
   2089 .ie n \{\
   2090 \h'-04'\(bu\h'+03'\c
   2091 .\}
   2092 .el \{\
   2093 .sp -1
   2094 .IP \(bu 2.3
   2095 .\}
   2096 http://tools\&.ietf\&.org/html/rfc5280
   2097 .RE
   2098 .sp
   2099 .RS 4
   2100 .ie n \{\
   2101 \h'-04'\(bu\h'+03'\c
   2102 .\}
   2103 .el \{\
   2104 .sp -1
   2105 .IP \(bu 2.3
   2106 .\}
   2107 http://tools\&.ietf\&.org/html/rfc1113
   2108 .RE
   2109 .sp
   2110 .RS 4
   2111 .ie n \{\
   2112 \h'-04'\(bu\h'+03'\c
   2113 .\}
   2114 .el \{\
   2115 .sp -1
   2116 .IP \(bu 2.3
   2117 .\}
   2118 http://tools\&.ietf\&.org/html/rfc1485
   2119 .RE
   2120 .PP
   2121 The NSS wiki has information on the new database design and how to configure applications to use it\&.
   2122 .sp
   2123 .RS 4
   2124 .ie n \{\
   2125 \h'-04'\(bu\h'+03'\c
   2126 .\}
   2127 .el \{\
   2128 .sp -1
   2129 .IP \(bu 2.3
   2130 .\}
   2131 https://wiki\&.mozilla\&.org/NSS_Shared_DB_Howto
   2132 .RE
   2133 .sp
   2134 .RS 4
   2135 .ie n \{\
   2136 \h'-04'\(bu\h'+03'\c
   2137 .\}
   2138 .el \{\
   2139 .sp -1
   2140 .IP \(bu 2.3
   2141 .\}
   2142 https://wiki\&.mozilla\&.org/NSS_Shared_DB
   2143 .RE
   2144 .SH "ADDITIONAL RESOURCES"
   2145 .PP
   2146 For information about NSS and other tools related to NSS (like JSS), check out the NSS project wiki at
   2147 \m[blue]\fBhttp://www\&.mozilla\&.org/projects/security/pki/nss/\fR\m[]\&. The NSS site relates directly to NSS code changes and releases\&.
   2148 .PP
   2149 Mailing lists: https://lists\&.mozilla\&.org/listinfo/dev\-tech\-crypto
   2150 .PP
   2151 IRC: Freenode at #dogtag\-pki
   2152 .SH "AUTHORS"
   2153 .PP
   2154 The NSS tools were written and maintained by developers with Netscape, Red Hat, Sun, Oracle, Mozilla, and Google\&.
   2155 .PP
   2156 Authors: Elio Maldonado <emaldona@redhat\&.com>, Deon Lackey <dlackey@redhat\&.com>\&.
   2157 .SH "LICENSE"
   2158 .PP
   2159 Licensed under the Mozilla Public License, v\&. 2\&.0\&. If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla\&.org/MPL/2\&.0/\&.
   2160 .SH "NOTES"
   2161 .IP " 1." 4
   2162 Mozilla NSS bug 836477
   2163 .RS 4
   2164 \%https://bugzilla.mozilla.org/show_bug.cgi?id=836477
   2165 .RE