x25519_sizes.h (1589B)
1 /* Copyright (c) 2001, Matej Pfajfar. 2 * Copyright (c) 2001-2004, Roger Dingledine. 3 * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson. 4 * Copyright (c) 2007-2021, The Tor Project, Inc. */ 5 /* See LICENSE for licensing information */ 6 7 /** 8 * \file x25519_sizes.h 9 10 * \brief Definitions for sizes of x25519 keys and elements. 11 * 12 * Tor uses these definitions throughout its codebase, even in parts that 13 * don't actually do any x25519 calculations. 14 **/ 15 16 #ifndef TOR_X25519_SIZES_H 17 #define TOR_X25519_SIZES_H 18 19 /** Length of a curve25519 public key when encoded. */ 20 #define CURVE25519_PUBKEY_LEN 32 21 /** Length of a curve25519 secret key when encoded. */ 22 #define CURVE25519_SECKEY_LEN 32 23 /** Length of the result of a curve25519 handshake. */ 24 #define CURVE25519_OUTPUT_LEN 32 25 26 /** Length of an Ed25519 public key */ 27 #define ED25519_PUBKEY_LEN 32 28 /** Length of an Ed25519 secret key */ 29 #define ED25519_SECKEY_LEN 64 30 /** Length of the seed that is ordinarily expanded to an Ed25519 secret 31 * key. */ 32 #define ED25519_SECKEY_SEED_LEN 32 33 /** Length of an Ed25519 signature. */ 34 #define ED25519_SIG_LEN 64 35 36 /** Length of a Curve25519 key when encoded in base 64, with padding. */ 37 #define CURVE25519_BASE64_PADDED_LEN 44 38 39 /** Length of a Curve25519 key when encoded in base 64, without padding. */ 40 #define CURVE25519_BASE64_LEN 43 41 42 /** Length of a Ed25519 key when encoded in base 64, without padding. */ 43 #define ED25519_BASE64_LEN 43 44 /** Length of a Ed25519 signature when encoded in base 64, without padding. */ 45 #define ED25519_SIG_BASE64_LEN 86 46 47 #endif /* !defined(TOR_X25519_SIZES_H) */