Hacl_Chacha20Poly1305_256.h (3810B)
1 /* MIT License 2 * 3 * Copyright (c) 2016-2022 INRIA, CMU and Microsoft Corporation 4 * Copyright (c) 2022-2023 HACL* Contributors 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to deal 8 * in the Software without restriction, including without limitation the rights 9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 10 * copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in all 14 * copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22 * SOFTWARE. 23 */ 24 25 #ifndef __Hacl_Chacha20Poly1305_256_H 26 #define __Hacl_Chacha20Poly1305_256_H 27 28 #if defined(__cplusplus) 29 extern "C" { 30 #endif 31 32 #include <string.h> 33 #include "krml/internal/types.h" 34 #include "krml/lowstar_endianness.h" 35 #include "krml/internal/target.h" 36 37 #include "Hacl_Poly1305_256.h" 38 #include "Hacl_Chacha20_Vec256.h" 39 40 /** 41 Encrypt a message `m` with key `k`. 42 43 The arguments `k`, `n`, `aadlen`, and `aad` are same in encryption/decryption. 44 Note: Encryption and decryption can be executed in-place, i.e., `m` and `cipher` can point to the same memory. 45 46 @param k Pointer to 32 bytes of memory where the AEAD key is read from. 47 @param n Pointer to 12 bytes of memory where the AEAD nonce is read from. 48 @param aadlen Length of the associated data. 49 @param aad Pointer to `aadlen` bytes of memory where the associated data is read from. 50 51 @param mlen Length of the message. 52 @param m Pointer to `mlen` bytes of memory where the message is read from. 53 @param cipher Pointer to `mlen` bytes of memory where the ciphertext is written to. 54 @param mac Pointer to 16 bytes of memory where the mac is written to. 55 */ 56 void 57 Hacl_Chacha20Poly1305_256_aead_encrypt( 58 uint8_t *k, 59 uint8_t *n, 60 uint32_t aadlen, 61 uint8_t *aad, 62 uint32_t mlen, 63 uint8_t *m, 64 uint8_t *cipher, 65 uint8_t *mac); 66 67 /** 68 Decrypt a ciphertext `cipher` with key `k`. 69 70 The arguments `k`, `n`, `aadlen`, and `aad` are same in encryption/decryption. 71 Note: Encryption and decryption can be executed in-place, i.e., `m` and `cipher` can point to the same memory. 72 73 If decryption succeeds, the resulting plaintext is stored in `m` and the function returns the success code 0. 74 If decryption fails, the array `m` remains unchanged and the function returns the error code 1. 75 76 @param k Pointer to 32 bytes of memory where the AEAD key is read from. 77 @param n Pointer to 12 bytes of memory where the AEAD nonce is read from. 78 @param aadlen Length of the associated data. 79 @param aad Pointer to `aadlen` bytes of memory where the associated data is read from. 80 81 @param mlen Length of the ciphertext. 82 @param m Pointer to `mlen` bytes of memory where the message is written to. 83 @param cipher Pointer to `mlen` bytes of memory where the ciphertext is read from. 84 @param mac Pointer to 16 bytes of memory where the mac is read from. 85 86 @returns 0 on succeess; 1 on failure. 87 */ 88 uint32_t 89 Hacl_Chacha20Poly1305_256_aead_decrypt( 90 uint8_t *k, 91 uint8_t *n, 92 uint32_t aadlen, 93 uint8_t *aad, 94 uint32_t mlen, 95 uint8_t *m, 96 uint8_t *cipher, 97 uint8_t *mac); 98 99 #if defined(__cplusplus) 100 } 101 #endif 102 103 #define __Hacl_Chacha20Poly1305_256_H_DEFINED 104 #endif