From 3271d1ac389d2ec93db9c5b9ce0991ce478476cf Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 18:09:41 +0200 Subject: Adding upstream version 4.3. Signed-off-by: Daniel Baumann --- siv.h | 70 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 siv.h (limited to 'siv.h') diff --git a/siv.h b/siv.h new file mode 100644 index 0000000..e303d34 --- /dev/null +++ b/siv.h @@ -0,0 +1,70 @@ +/* + chronyd/chronyc - Programs for keeping computer clocks accurate. + + ********************************************************************** + * Copyright (C) Miroslav Lichvar 2019 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + ********************************************************************** + + ======================================================================= + + Header file for Synthetic Initialization Vector (SIV) ciphers. + + */ + +#ifndef GOT_SIV_H +#define GOT_SIV_H + +/* Maximum key length of all supported SIVs */ +#define SIV_MAX_KEY_LENGTH 32 + +/* Maximum difference between lengths of ciphertext and plaintext */ +#define SIV_MAX_TAG_LENGTH 16 + +/* Identifiers of SIV algorithms following the IANA AEAD registry */ +typedef enum { + AEAD_AES_SIV_CMAC_256 = 15, + AEAD_AES_SIV_CMAC_384 = 16, + AEAD_AES_SIV_CMAC_512 = 17, + AEAD_AES_128_GCM_SIV = 30, + AEAD_AES_256_GCM_SIV = 31, +} SIV_Algorithm; + +typedef struct SIV_Instance_Record *SIV_Instance; + +extern SIV_Instance SIV_CreateInstance(SIV_Algorithm algorithm); + +extern void SIV_DestroyInstance(SIV_Instance instance); + +extern int SIV_GetKeyLength(SIV_Algorithm algorithm); + +extern int SIV_SetKey(SIV_Instance instance, const unsigned char *key, int length); + +extern int SIV_GetTagLength(SIV_Instance instance); + +extern int SIV_Encrypt(SIV_Instance instance, + const unsigned char *nonce, int nonce_length, + const void *assoc, int assoc_length, + const void *plaintext, int plaintext_length, + unsigned char *ciphertext, int ciphertext_length); + +extern int SIV_Decrypt(SIV_Instance instance, + const unsigned char *nonce, int nonce_length, + const void *assoc, int assoc_length, + const unsigned char *ciphertext, int ciphertext_length, + void *plaintext, int plaintext_length); + +#endif -- cgit v1.2.3