projects / thirdparty / chrony.git / blame
| Commit | Line | Data |
|---|---|---|
| c5306bed ML |
1 | /* |
| 2 | chronyd/chronyc - Programs for keeping computer clocks accurate. | |
| 3 | ||
| 4 | ********************************************************************** | |
| 5 | * Copyright (C) Miroslav Lichvar 2019 | |
| 6 | * | |
| 7 | * This program is free software; you can redistribute it and/or modify | |
| 8 | * it under the terms of version 2 of the GNU General Public License as | |
| 9 | * published by the Free Software Foundation. | |
| 10 | * | |
| 11 | * This program is distributed in the hope that it will be useful, but | |
| 12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 | * General Public License for more details. | |
| 15 | * | |
| 16 | * You should have received a copy of the GNU General Public License along | |
| 17 | * with this program; if not, write to the Free Software Foundation, Inc., | |
| 18 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. | |
| 19 | * | |
| 20 | ********************************************************************** | |
| 21 | ||
| 22 | ======================================================================= | |
| 23 | ||
| 24 | Header file for Synthetic Initialization Vector (SIV) ciphers. | |
| 25 | ||
| 26 | */ | |
| 27 | ||
| 28 | #ifndef GOT_SIV_H | |
| 29 | #define GOT_SIV_H | |
| 30 | ||
| 31 | /* Maximum key length of all supported SIVs */ | |
| 32 | #define SIV_MAX_KEY_LENGTH 32 | |
| 33 | ||
| 34 | /* Maximum difference between lengths of ciphertext and plaintext */ | |
| 35 | #define SIV_MAX_TAG_LENGTH 16 | |
| 36 | ||
| 37 | /* Identifiers of SIV algorithms following the IANA AEAD registry */ | |
| 38 | typedef enum { | |
| 39 | AEAD_AES_SIV_CMAC_256 = 15, | |
| 40 | AEAD_AES_SIV_CMAC_384 = 16, | |
| 41 | AEAD_AES_SIV_CMAC_512 = 17, | |
| 42 | AEAD_AES_128_GCM_SIV = 30, | |
| 43 | AEAD_AES_256_GCM_SIV = 31, | |
| 44 | } SIV_Algorithm; | |
| 45 | ||
| 46 | typedef struct SIV_Instance_Record *SIV_Instance; | |
| 47 | ||
| 48 | extern SIV_Instance SIV_CreateInstance(SIV_Algorithm algorithm); | |
| 49 | ||
| 50 | extern void SIV_DestroyInstance(SIV_Instance instance); | |
| 51 | ||
| 52 | extern int SIV_GetKeyLength(SIV_Algorithm algorithm); | |
| 53 | ||
| 54 | extern int SIV_SetKey(SIV_Instance instance, const unsigned char *key, int length); | |
| 55 | ||
| 56 | extern int SIV_GetTagLength(SIV_Instance instance); | |
| 57 | ||
| 58 | extern int SIV_Encrypt(SIV_Instance instance, | |
| 59 | const unsigned char *nonce, int nonce_length, | |
| 60 | const void *assoc, int assoc_length, | |
| 61 | const void *plaintext, int plaintext_length, | |
| 62 | unsigned char *ciphertext, int ciphertext_length); | |
| 63 | ||
| 64 | extern int SIV_Decrypt(SIV_Instance instance, | |
| 65 | const unsigned char *nonce, int nonce_length, | |
| 66 | const void *assoc, int assoc_length, | |
| 67 | const unsigned char *ciphertext, int ciphertext_length, | |
| 68 | void *plaintext, int plaintext_length); | |
| 69 | ||
| 70 | #endif |