* crypto/xform.c
* $OpenBSD: xform.c,v 1.61 2021/10/22 12:30:53 bluhm Exp $
*
* The authors of this code are John Ioannidis (ji@tla.org),
* Angelos D. Keromytis (kermit@csd.uch.gr),
* Niels Provos (provos@physnet.uni-hamburg.de),
* Damien Miller (djm@mindrot.org) and
* Mike Belopuhov (mikeb@openbsd.org).
*
* This code was written by John Ioannidis for BSD/OS in Athens, Greece,
* in November 1995.
*
* Ported to OpenBSD and NetBSD, with additional transforms,
* in December 1996,
* by Angelos D. Keromytis.
*
* Additional transforms and features in 1997 and 1998 by
* Angelos D. Keromytis and Niels Provos.
*
* Additional features in 1999 by Angelos D. Keromytis.
*
* AES XTS implementation in 2008 by Damien Miller
*
* AES-GCM-16 and Chacha20-Poly1305 AEAD modes by Mike Belopuhov.
*
* Copyright (C) 1995, 1996, 1997, 1998, 1999 by John Ioannidis,
* Angelos D. Keromytis and Niels Provos.
*
* Copyright (C) 2001, Angelos D. Keromytis.
*
* Copyright (C) 2008, Damien Miller
*
* Copyright (C) 2010, 2015, Mike Belopuhov
*
* Permission to use, copy, and modify this software with or without fee
* is hereby granted, provided that this entire notice is included in
* all copies of any software which is or includes a copy or
* modification of this software.
* You may use this code under the GNU public license if you so wish. Please
* contribute changes back to the authors under this freer than GPL license
* so that we may further the use of strong encryption without limitations to
* all.
*
* THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY
* REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
* MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
* PURPOSE.
****************************************************************************/
* Included Files
****************************************************************************/
#include <errno.h>
#include <stdbool.h>
#include <string.h>
#include <strings.h>
#include <sys/param.h>
#include <sys/time.h>
#include <crypto/md5.h>
#include <crypto/sha1.h>
#include <crypto/sha2.h>
#include <crypto/rmd160.h>
#include <crypto/blf.h>
#include <crypto/cast.h>
#include <crypto/rijndael.h>
#include <crypto/aes.h>
#include <crypto/cryptodev.h>
#include <crypto/xform.h>
#include <crypto/gmac.h>
#include <crypto/cmac.h>
#include <crypto/chachapoly.h>
#include <crypto/poly1305.h>
#include <nuttx/crc8.h>
#include <nuttx/crc16.h>
#include <nuttx/crc32.h>
#include "des_locl.h"
* Pre-processor Definitions
****************************************************************************/
#define REFLECT8(data) \
((((data) * 0x0802U & 0x22110U) | \
((data) * 0x8020U & 0x88440U)) * 0x10101U >> 16)
* Public Functions
****************************************************************************/
extern void des_ecb3_encrypt(caddr_t, caddr_t, caddr_t,
caddr_t, caddr_t, int);
int des_set_key(FAR void *, caddr_t);
int des3_setkey(FAR void *, FAR uint8_t *, int);
int blf_setkey(FAR void *, FAR uint8_t *, int);
int cast5_setkey(FAR void *, FAR uint8_t *, int);
int aes_setkey_xform(FAR void *, FAR uint8_t *, int);
int aes_ctr_setkey(FAR void *, FAR uint8_t *, int);
int aes_xts_setkey(FAR void *, FAR uint8_t *, int);
int aes_ofb_setkey(FAR void *, FAR uint8_t *, int);
int null_setkey(FAR void *, FAR uint8_t *, int);
void des3_encrypt(caddr_t, FAR uint8_t *);
void blf_encrypt(caddr_t, FAR uint8_t *);
void cast5_encrypt(caddr_t, FAR uint8_t *);
void aes_encrypt_xform(caddr_t, FAR uint8_t *);
void null_encrypt(caddr_t, FAR uint8_t *);
void aes_xts_encrypt(caddr_t, FAR uint8_t *);
void aes_ofb_encrypt(caddr_t, FAR uint8_t *);
void aes_cfb8_encrypt(caddr_t, FAR uint8_t *);
void aes_cfb128_encrypt(caddr_t, FAR uint8_t *);
void des3_decrypt(caddr_t, FAR uint8_t *);
void blf_decrypt(caddr_t, FAR uint8_t *);
void cast5_decrypt(caddr_t, FAR uint8_t *);
void aes_decrypt_xform(caddr_t, FAR uint8_t *);
void null_decrypt(caddr_t, FAR uint8_t *);
void aes_xts_decrypt(caddr_t, FAR uint8_t *);
void aes_cfb8_decrypt(caddr_t, FAR uint8_t *);
void aes_cfb128_decrypt(caddr_t, FAR uint8_t *);
void aes_ctr_crypt(caddr_t, FAR uint8_t *);
void aes_reinit_xform(caddr_t, FAR uint8_t *);
void aes_ctr_reinit(caddr_t, FAR uint8_t *);
void aes_xts_reinit(caddr_t, FAR uint8_t *);
void aes_gcm_reinit(caddr_t, FAR uint8_t *);
void aes_ofb_reinit(caddr_t, FAR uint8_t *);
void null_init(FAR void *);
void poly1305_setkey(FAR void *, FAR const uint8_t *, uint16_t);
int poly1305update_int(FAR void *, FAR const uint8_t *, size_t);
int poly1305_final(FAR uint8_t *, FAR void *);
int md5update_int(FAR void *, FAR const uint8_t *, size_t);
int sha1update_int(FAR void *, FAR const uint8_t *, size_t);
int rmd160update_int(FAR void *, FAR const uint8_t *, size_t);
int sha224update_int(FAR void *, FAR const uint8_t *, size_t);
int sha256update_int(FAR void *, FAR const uint8_t *, size_t);
int sha384update_int(FAR void *, FAR const uint8_t *, size_t);
int sha512update_int(FAR void *, FAR const uint8_t *, size_t);
void crc8init(FAR void *);
int crc8update(FAR void *, FAR const uint8_t *, size_t);
void crc8final(FAR uint8_t *, FAR void *);
void crc16init(FAR void *);
int crc16update(FAR void *, FAR const uint8_t *, size_t);
void crc16final(FAR uint8_t *, FAR void *);
void crc32init(FAR void *);
int crc32update(FAR void *, FAR const uint8_t *, size_t);
void crc32final(FAR uint8_t *, FAR void *);
void crcsetkey(FAR void *, FAR const uint8_t *, uint16_t);
struct aes_ctr_ctx
{
AES_CTX ac_key;
uint8_t ac_block[AESCTR_BLOCKSIZE];
};
struct aes_xts_ctx
{
rijndael_ctx key1;
rijndael_ctx key2;
uint8_t tweak[AES_XTS_BLOCKSIZE];
};
struct aes_ofb_ctx
{
AES_CTX ac_key;
FAR uint8_t *iv;
};
struct crc8_ctx
{
uint8_t polynomial;
uint8_t initial;
uint8_t xorout;
bool reflectin;
bool reflectout;
};
struct crc16_ctx
{
uint16_t polynomial;
uint16_t initial;
uint16_t xorout;
bool reflectin;
bool reflectout;
};
struct crc32_ctx
{
uint32_t polynomial;
uint32_t initial;
uint32_t xorout;
bool reflectin;
bool reflectout;
};
void aes_xts_crypt(FAR struct aes_xts_ctx *, FAR uint8_t *, u_int);
const struct enc_xform enc_xform_3des =
{
CRYPTO_3DES_CBC, "3DES",
8, 8, 24, 24, 384,
des3_encrypt,
des3_decrypt,
des3_setkey,
NULL
};
const struct enc_xform enc_xform_blf =
{
CRYPTO_BLF_CBC, "Blowfish",
8, 8, 5, 56 ,
sizeof(blf_ctx),
blf_encrypt,
blf_decrypt,
blf_setkey,
NULL
};
const struct enc_xform enc_xform_cast5 =
{
CRYPTO_CAST_CBC, "CAST-128",
8, 8, 5, 16,
sizeof(cast_key),
cast5_encrypt,
cast5_decrypt,
cast5_setkey,
NULL
};
const struct enc_xform enc_xform_aes =
{
CRYPTO_AES_CBC, "AES",
16, 16, 16, 32,
sizeof(AES_CTX),
aes_encrypt_xform,
aes_decrypt_xform,
aes_setkey_xform,
aes_reinit_xform,
};
const struct enc_xform enc_xform_aes_ctr =
{
CRYPTO_AES_CTR, "AES-CTR",
16, 16, 16, 32,
sizeof(struct aes_ctr_ctx),
aes_ctr_crypt,
aes_ctr_crypt,
aes_ctr_setkey,
aes_ctr_reinit
};
const struct enc_xform enc_xform_aes_gcm =
{
CRYPTO_AES_GCM_16, "AES-GCM",
1, 8, 16 + 4, 32 + 4,
sizeof(struct aes_ctr_ctx),
aes_ctr_crypt,
aes_ctr_crypt,
aes_ctr_setkey,
aes_gcm_reinit
};
const struct enc_xform enc_xform_aes_gmac =
{
CRYPTO_AES_GMAC, "AES-GMAC",
1, 8, 16 + 4, 32 + 4, 0,
NULL,
NULL,
NULL,
NULL
};
const struct enc_xform enc_xform_aes_cmac =
{
CRYPTO_AES_CMAC, "AES-CMAC",
1, 0, 16, 32, 0,
null_encrypt,
null_decrypt,
null_setkey,
NULL
};
const struct enc_xform enc_xform_aes_xts =
{
CRYPTO_AES_XTS, "AES-XTS",
16, 16, 32, 64,
sizeof(struct aes_xts_ctx),
aes_xts_encrypt,
aes_xts_decrypt,
aes_xts_setkey,
aes_xts_reinit
};
const struct enc_xform enc_xform_aes_ofb =
{
CRYPTO_AES_OFB, "AES-OFB",
16, 16, 16, 32,
sizeof(struct aes_ofb_ctx),
aes_ofb_encrypt,
aes_ofb_encrypt,
aes_ofb_setkey,
aes_ofb_reinit
};
const struct enc_xform enc_xform_aes_cfb_8 =
{
CRYPTO_AES_CFB_8, "AES-CFB-8",
16, 16, 16, 32,
sizeof(struct aes_ofb_ctx),
aes_cfb8_encrypt,
aes_cfb8_decrypt,
aes_ofb_setkey,
aes_ofb_reinit
};
const struct enc_xform enc_xform_aes_cfb_128 =
{
CRYPTO_AES_CFB_128, "AES-CFB-128",
16, 16, 16, 32,
sizeof(struct aes_ofb_ctx),
aes_cfb128_encrypt,
aes_cfb128_decrypt,
aes_ofb_setkey,
aes_ofb_reinit
};
const struct enc_xform enc_xform_chacha20_poly1305 =
{
CRYPTO_CHACHA20_POLY1305, "CHACHA20-POLY1305",
1, 8, 32 + 4, 32 + 4,
sizeof(struct chacha20_ctx),
chacha20_crypt,
chacha20_crypt,
chacha20_setkey,
chacha20_reinit
};
const struct enc_xform enc_xform_null =
{
CRYPTO_NULL, "NULL",
4, 0, 0, 256, 0,
null_encrypt,
null_decrypt,
null_setkey,
NULL
};
const struct auth_hash auth_hash_hmac_md5_96 =
{
CRYPTO_MD5_HMAC, "HMAC-MD5",
16, 16, 12, sizeof(MD5_CTX), HMAC_MD5_BLOCK_LEN,
(void (*) (FAR void *)) md5init, NULL, NULL,
md5update_int,
(void (*) (FAR uint8_t *, FAR void *)) md5final
};
const struct auth_hash auth_hash_hmac_sha1_96 =
{
CRYPTO_SHA1_HMAC, "HMAC-SHA1",
20, 20, 12, sizeof(SHA1_CTX), HMAC_SHA1_BLOCK_LEN,
(void (*) (FAR void *)) sha1init, NULL, NULL,
sha1update_int,
(void (*) (FAR uint8_t *, FAR void *)) sha1final
};
const struct auth_hash auth_hash_hmac_ripemd_160_96 =
{
CRYPTO_RIPEMD160_HMAC, "HMAC-RIPEMD-160",
20, 20, 12, sizeof(RMD160_CTX), HMAC_RIPEMD160_BLOCK_LEN,
(void (*)(FAR void *)) rmd160init, NULL, NULL,
rmd160update_int,
(void (*)(FAR uint8_t *, FAR void *)) rmd160final
};
const struct auth_hash auth_hash_hmac_sha2_256_128 =
{
CRYPTO_SHA2_256_HMAC, "HMAC-SHA2-256",
32, 32, 16, sizeof(SHA2_CTX), HMAC_SHA2_256_BLOCK_LEN,
(void (*)(FAR void *)) sha256init, NULL, NULL,
sha256update_int,
(void (*)(FAR uint8_t *, FAR void *)) sha256final
};
const struct auth_hash auth_hash_hmac_sha2_384_192 =
{
CRYPTO_SHA2_384_HMAC, "HMAC-SHA2-384",
48, 48, 24, sizeof(SHA2_CTX), HMAC_SHA2_384_BLOCK_LEN,
(void (*)(FAR void *)) sha384init, NULL, NULL,
sha384update_int,
(void (*)(FAR uint8_t *, FAR void *)) sha384final
};
const struct auth_hash auth_hash_hmac_sha2_512_256 =
{
CRYPTO_SHA2_512_HMAC, "HMAC-SHA2-512",
64, 64, 32, sizeof(SHA2_CTX), HMAC_SHA2_512_BLOCK_LEN,
(void (*)(FAR void *)) sha512init, NULL, NULL,
sha512update_int,
(void (*)(FAR uint8_t *, FAR void *)) sha512final
};
const struct auth_hash auth_hash_gmac_aes_128 =
{
CRYPTO_AES_128_GMAC, "GMAC-AES-128",
16 + 4, GMAC_BLOCK_LEN, GMAC_DIGEST_LEN, sizeof(AES_GMAC_CTX),
AESCTR_BLOCKSIZE, aes_gmac_init, aes_gmac_setkey, aes_gmac_reinit,
aes_gmac_update, aes_gmac_final
};
const struct auth_hash auth_hash_gmac_aes_192 =
{
CRYPTO_AES_192_GMAC, "GMAC-AES-192",
24 + 4, GMAC_BLOCK_LEN, GMAC_DIGEST_LEN, sizeof(AES_GMAC_CTX),
AESCTR_BLOCKSIZE, aes_gmac_init, aes_gmac_setkey, aes_gmac_reinit,
aes_gmac_update, aes_gmac_final
};
const struct auth_hash auth_hash_gmac_aes_256 =
{
CRYPTO_AES_256_GMAC, "GMAC-AES-256",
32 + 4, GMAC_BLOCK_LEN, GMAC_DIGEST_LEN, sizeof(AES_GMAC_CTX),
AESCTR_BLOCKSIZE, aes_gmac_init, aes_gmac_setkey, aes_gmac_reinit,
aes_gmac_update, aes_gmac_final
};
const struct auth_hash auth_hash_chacha20_poly1305 =
{
CRYPTO_CHACHA20_POLY1305_MAC, "CHACHA20-POLY1305",
CHACHA20_KEYSIZE + CHACHA20_SALT, POLY1305_BLOCK_LEN, POLY1305_TAGLEN,
sizeof(CHACHA20_POLY1305_CTX), CHACHA20_BLOCK_LEN,
chacha20_poly1305_init, chacha20_poly1305_setkey,
chacha20_poly1305_reinit, chacha20_poly1305_update,
chacha20_poly1305_final
};
const struct auth_hash auth_hash_cmac_aes_128 =
{
CRYPTO_AES_128_CMAC, "CMAC-AES-128",
16, AES_CMAC_KEY_LENGTH, AES_CMAC_DIGEST_LENGTH, sizeof(AES_CMAC_CTX),
AESCTR_BLOCKSIZE, (void (*)(FAR void *)) aes_cmac_init,
(void (*)(FAR void *, FAR const uint8_t *, uint16_t)) aes_cmac_setkey,
NULL, (int (*)(FAR void *, FAR const uint8_t *, size_t)) aes_cmac_update,
(void (*) (FAR uint8_t *, FAR void *)) aes_cmac_final
};
const struct auth_hash auth_hash_md5 =
{
CRYPTO_MD5, "MD5",
0, 16, 16, sizeof(MD5_CTX), HMAC_MD5_BLOCK_LEN,
(void (*) (FAR void *)) md5init, NULL, NULL,
md5update_int,
(void (*) (FAR uint8_t *, FAR void *)) md5final
};
const struct auth_hash auth_hash_poly1305 =
{
CRYPTO_POLY1305, "POLY1305",
0, 16, 16, sizeof(poly1305_state), poly1305_block_size,
(void (*) (FAR void *)) null_init, poly1305_setkey, NULL,
poly1305update_int,
(void (*) (FAR uint8_t *, FAR void *)) poly1305_final
};
const struct auth_hash auth_hash_ripemd_160 =
{
CRYPTO_RIPEMD160, "RIPEMD160",
0, 20, 20, sizeof(RMD160_CTX), HMAC_RIPEMD160_BLOCK_LEN,
(void (*) (FAR void *)) rmd160init, NULL, NULL,
rmd160update_int,
(void (*) (FAR uint8_t *, FAR void *)) rmd160final
};
const struct auth_hash auth_hash_sha1 =
{
CRYPTO_SHA1, "SHA1",
0, 20, 20, sizeof(SHA1_CTX), HMAC_SHA1_BLOCK_LEN,
(void (*) (FAR void *)) sha1init, NULL, NULL,
sha1update_int,
(void (*) (FAR uint8_t *, FAR void *)) sha1final
};
const struct auth_hash auth_hash_sha2_224 =
{
CRYPTO_SHA2_224, "SHA2-224",
0, 28, 16, sizeof(SHA2_CTX), SHA224_BLOCK_LENGTH,
(void (*)(FAR void *)) sha224init, NULL, NULL,
sha224update_int,
(void (*)(FAR uint8_t *, FAR void *)) sha224final
};
const struct auth_hash auth_hash_sha2_256 =
{
CRYPTO_SHA2_256, "SHA2-256",
0, 32, 16, sizeof(SHA2_CTX), HMAC_SHA2_256_BLOCK_LEN,
(void (*)(FAR void *)) sha256init, NULL, NULL,
sha256update_int,
(void (*)(FAR uint8_t *, FAR void *)) sha256final
};
const struct auth_hash auth_hash_sha2_384 =
{
CRYPTO_SHA2_384, "SHA2-384",
0, 48, 24, sizeof(SHA2_CTX), HMAC_SHA2_384_BLOCK_LEN,
(void (*)(FAR void *)) sha384init, NULL, NULL,
sha384update_int,
(void (*)(FAR uint8_t *, FAR void *)) sha384final
};
const struct auth_hash auth_hash_sha2_512 =
{
CRYPTO_SHA2_512, "SHA2-512",
0, 64, 32, sizeof(SHA2_CTX), HMAC_SHA2_512_BLOCK_LEN,
(void (*)(FAR void *)) sha512init, NULL, NULL,
sha512update_int,
(void (*)(FAR uint8_t *, FAR void *)) sha512final
};
const struct auth_hash auth_hash_crc8 =
{
CRYPTO_CRC8, "CRC8",
0, 8, 0, sizeof(struct crc8_ctx), 1,
crc8init, crcsetkey, NULL, crc8update, crc8final
};
const struct auth_hash auth_hash_crc16 =
{
CRYPTO_CRC16, "CRC16",
0, 16, 0, sizeof(struct crc16_ctx), 1,
crc16init, crcsetkey, NULL, crc16update, crc16final
};
const struct auth_hash auth_hash_crc32 =
{
CRYPTO_CRC32, "CRC32",
0, 32, 0, sizeof(struct crc32_ctx), 1,
crc32init, crcsetkey, NULL, crc32update, crc32final
};
void des3_encrypt(caddr_t key, FAR uint8_t *blk)
{
des_ecb3_encrypt((caddr_t)blk, (caddr_t)blk, key, key + 128, key + 256, 1);
}
void des3_decrypt(caddr_t key, FAR uint8_t *blk)
{
des_ecb3_encrypt((caddr_t)blk, (caddr_t)blk, key + 256, key + 128, key, 0);
}
int des3_setkey(FAR void *sched, FAR uint8_t *key, int len)
{
if (des_set_key(key, sched) < 0 || des_set_key(key + 8, sched + 128)
< 0 || des_set_key(key + 16, sched + 256) < 0)
{
return -1;
}
return 0;
}
void blf_encrypt(caddr_t key, FAR uint8_t *blk)
{
blf_ecb_encrypt((FAR blf_ctx *) key, blk, 8);
}
void blf_decrypt(caddr_t key, FAR uint8_t *blk)
{
blf_ecb_decrypt((FAR blf_ctx *) key, blk, 8);
}
int blf_setkey(FAR void *sched, FAR uint8_t *key, int len)
{
blf_key((FAR blf_ctx *)sched, key, len);
return 0;
}
int null_setkey(FAR void *sched, FAR uint8_t *key, int len)
{
return 0;
}
void null_encrypt(caddr_t key, FAR uint8_t *blk)
{
}
void null_decrypt(caddr_t key, FAR uint8_t *blk)
{
}
void cast5_encrypt(caddr_t key, FAR uint8_t *blk)
{
cast_encrypt((FAR cast_key *) key, blk, blk);
}
void cast5_decrypt(caddr_t key, FAR uint8_t *blk)
{
cast_decrypt((FAR cast_key *) key, blk, blk);
}
int cast5_setkey(FAR void *sched, FAR uint8_t *key, int len)
{
cast_setkey((FAR cast_key *)sched, key, len);
return 0;
}
void aes_encrypt_xform(caddr_t key, FAR uint8_t *blk)
{
FAR AES_CTX *ctx;
int i;
ctx = (FAR AES_CTX *)key;
for (i = 0; i < RIJNDAEL128_BLOCK_LEN; i++)
{
blk[i] ^= ctx->iv[i];
}
aes_encrypt(ctx, blk, blk);
bcopy(blk, ctx->iv, RIJNDAEL128_BLOCK_LEN);
}
void aes_decrypt_xform(caddr_t key, FAR uint8_t *blk)
{
FAR AES_CTX *ctx;
uint8_t tmp[RIJNDAEL128_BLOCK_LEN];
int i;
ctx = (FAR AES_CTX *)key;
bcopy(blk, tmp, RIJNDAEL128_BLOCK_LEN);
aes_decrypt(ctx, blk, blk);
for (i = 0; i < RIJNDAEL128_BLOCK_LEN; i++)
{
blk[i] ^= ctx->iv[i];
}
bcopy(tmp, ctx->iv, RIJNDAEL128_BLOCK_LEN);
}
int aes_setkey_xform(FAR void *sched, FAR uint8_t *key, int len)
{
return aes_setkey((FAR AES_CTX *)sched, key, len);
}
void aes_reinit_xform(caddr_t key, FAR uint8_t *iv)
{
FAR AES_CTX *ctx;
ctx = (FAR AES_CTX *)key;
bcopy(iv, ctx->iv, RIJNDAEL128_BLOCK_LEN);
}
void aes_ctr_reinit(caddr_t key, FAR uint8_t *iv)
{
FAR struct aes_ctr_ctx *ctx;
ctx = (FAR struct aes_ctr_ctx *)key;
bcopy(iv, ctx->ac_block, AESCTR_BLOCKSIZE);
}
void aes_gcm_reinit(caddr_t key, FAR uint8_t *iv)
{
FAR struct aes_ctr_ctx *ctx;
ctx = (FAR struct aes_ctr_ctx *)key;
bcopy(iv, ctx->ac_block + AESCTR_NONCESIZE, AESCTR_IVSIZE);
bzero(ctx->ac_block + AESCTR_NONCESIZE + AESCTR_IVSIZE, 4);
ctx->ac_block[AESCTR_BLOCKSIZE - 1] = 1;
}
void aes_ctr_crypt(caddr_t key, FAR uint8_t *data)
{
FAR struct aes_ctr_ctx *ctx;
uint8_t keystream[AESCTR_BLOCKSIZE];
int i;
ctx = (FAR struct aes_ctr_ctx *)key;
aes_encrypt(&ctx->ac_key, ctx->ac_block, keystream);
for (i = 0; i < AESCTR_BLOCKSIZE; i++)
{
data[i] ^= keystream[i];
}
explicit_bzero(keystream, sizeof(keystream));
for (i = AESCTR_BLOCKSIZE - 1;
i >= AESCTR_NONCESIZE + AESCTR_IVSIZE; i--)
{
if (++ctx->ac_block[i])
{
break;
}
}
}
int aes_ctr_setkey(FAR void *sched, FAR uint8_t *key, int len)
{
FAR struct aes_ctr_ctx *ctx;
if (len < AESCTR_NONCESIZE)
{
return -1;
}
ctx = (FAR struct aes_ctr_ctx *)sched;
if (aes_setkey(&ctx->ac_key, key, len) != 0)
{
return -1;
}
bcopy(key + len - AESCTR_NONCESIZE, ctx->ac_block, AESCTR_NONCESIZE);
return 0;
}
void aes_xts_reinit(caddr_t key, FAR uint8_t *iv)
{
FAR struct aes_xts_ctx *ctx = (FAR struct aes_xts_ctx *)key;
bcopy(iv, ctx->tweak, 16);
rijndael_encrypt(&ctx->key2, ctx->tweak, ctx->tweak);
}
void aes_xts_crypt(FAR struct aes_xts_ctx *ctx,
FAR uint8_t *data,
u_int do_encrypt)
{
uint8_t block[AES_XTS_BLOCKSIZE];
u_int i;
u_int carry_in;
u_int carry_out;
for (i = 0; i < AES_XTS_BLOCKSIZE; i++)
{
block[i] = data[i] ^ ctx->tweak[i];
}
if (do_encrypt)
{
rijndael_encrypt(&ctx->key1, block, data);
}
else
{
rijndael_decrypt(&ctx->key1, block, data);
}
for (i = 0; i < AES_XTS_BLOCKSIZE; i++)
{
data[i] ^= ctx->tweak[i];
}
carry_in = 0;
for (i = 0; i < AES_XTS_BLOCKSIZE; i++)
{
carry_out = ctx->tweak[i] & 0x80;
ctx->tweak[i] = (ctx->tweak[i] << 1) | carry_in;
carry_in = carry_out >> 7;
}
ctx->tweak[0] ^= (AES_XTS_ALPHA & -carry_in);
explicit_bzero(block, sizeof(block));
}
void aes_xts_encrypt(caddr_t key, FAR uint8_t *data)
{
aes_xts_crypt((FAR struct aes_xts_ctx *)key, data, 1);
}
void aes_xts_decrypt(caddr_t key, FAR uint8_t *data)
{
aes_xts_crypt((FAR struct aes_xts_ctx *)key, data, 0);
}
int aes_xts_setkey(FAR void *sched, FAR uint8_t *key, int len)
{
FAR struct aes_xts_ctx *ctx;
if (len != 32 && len != 64)
{
return -1;
}
ctx = (FAR struct aes_xts_ctx *)sched;
rijndael_set_key(&ctx->key1, key, len * 4);
rijndael_set_key(&ctx->key2, key + (len / 2), len * 4);
return 0;
}
void aes_ofb_encrypt(caddr_t key, FAR uint8_t *data)
{
FAR struct aes_ofb_ctx *ctx;
int i;
ctx = (FAR struct aes_ofb_ctx *)key;
aes_encrypt(&ctx->ac_key, ctx->iv, ctx->iv);
for (i = 0; i < AESOFB_IVSIZE; i++)
{
data[i] ^= ctx->iv[i];
}
}
int aes_ofb_setkey(FAR void *sched, FAR uint8_t *key, int len)
{
FAR struct aes_ofb_ctx *ctx;
ctx = (FAR struct aes_ofb_ctx *)sched;
if (aes_setkey(&ctx->ac_key, key, len) != 0)
{
return -1;
}
return 0;
}
void aes_ofb_reinit(caddr_t key, FAR uint8_t *iv)
{
FAR struct aes_ofb_ctx *ctx;
ctx = (FAR struct aes_ofb_ctx *)key;
ctx->iv = iv;
}
void aes_cfb8_encrypt(caddr_t key, FAR uint8_t *data)
{
FAR struct aes_ofb_ctx *ctx;
uint8_t ov[AESOFB_IVSIZE + 1];
int i;
ctx = (FAR struct aes_ofb_ctx *)key;
for (i = 0; i < AESOFB_IVSIZE; i++)
{
bcopy(ctx->iv, ov, AESOFB_IVSIZE);
aes_encrypt(&ctx->ac_key, ctx->iv, ctx->iv);
data[i] ^= ctx->iv[0];
ov[AESOFB_IVSIZE] = data[i];
bcopy(ov + 1, ctx->iv, AESOFB_IVSIZE);
}
}
void aes_cfb8_decrypt(caddr_t key, FAR uint8_t *data)
{
FAR struct aes_ofb_ctx *ctx;
uint8_t ov[AESOFB_IVSIZE + 1];
int i;
ctx = (FAR struct aes_ofb_ctx *)key;
for (i = 0; i < AESOFB_IVSIZE; i++)
{
bcopy(ctx->iv, ov, AESOFB_IVSIZE);
aes_encrypt(&ctx->ac_key, ctx->iv, ctx->iv);
ov[AESOFB_IVSIZE] = data[i];
data[i] ^= ctx->iv[0];
bcopy(ov + 1, ctx->iv, AESOFB_IVSIZE);
}
}
void aes_cfb128_encrypt(caddr_t key, FAR uint8_t *data)
{
FAR struct aes_ofb_ctx *ctx;
int i;
ctx = (FAR struct aes_ofb_ctx *)key;
aes_encrypt(&ctx->ac_key, ctx->iv, ctx->iv);
for (i = 0; i < AESOFB_IVSIZE; i++)
{
data[i] ^= ctx->iv[i];
ctx->iv[i] = data[i];
}
}
void aes_cfb128_decrypt(caddr_t key, FAR uint8_t *data)
{
FAR struct aes_ofb_ctx *ctx;
uint8_t c;
int i;
ctx = (FAR struct aes_ofb_ctx *)key;
aes_encrypt(&ctx->ac_key, ctx->iv, ctx->iv);
for (i = 0; i < AESOFB_IVSIZE; i++)
{
c = data[i];
data[i] ^= ctx->iv[i];
ctx->iv[i] = c;
}
}
void null_init(FAR void *ctx)
{
}
void poly1305_setkey(FAR void *sched, FAR const uint8_t *key, uint16_t len)
{
FAR struct poly1305_state *ctx;
ctx = (FAR struct poly1305_state *)sched;
poly1305_begin(ctx, key);
}
int poly1305update_int(FAR void *ctx, FAR const uint8_t *buf, size_t len)
{
poly1305_update(ctx, buf, len);
return 0;
}
int poly1305_final(FAR uint8_t *digest, FAR void *ctx)
{
poly1305_finish(ctx, digest);
return 0;
}
int rmd160update_int(FAR void *ctx, FAR const uint8_t *buf, size_t len)
{
rmd160update(ctx, buf, len);
return 0;
}
int md5update_int(FAR void *ctx, FAR const uint8_t *buf, size_t len)
{
md5update(ctx, buf, len);
return 0;
}
int sha1update_int(FAR void *ctx, FAR const uint8_t *buf, size_t len)
{
sha1update(ctx, buf, len);
return 0;
}
int sha224update_int(FAR void *ctx, FAR const uint8_t *buf, size_t len)
{
sha224update(ctx, buf, len);
return 0;
}
int sha256update_int(FAR void *ctx, FAR const uint8_t *buf, size_t len)
{
sha256update(ctx, buf, len);
return 0;
}
int sha384update_int(FAR void *ctx, FAR const uint8_t *buf, size_t len)
{
sha384update(ctx, buf, len);
return 0;
}
int sha512update_int(FAR void *ctx, FAR const uint8_t *buf, size_t len)
{
sha512update(ctx, buf, len);
return 0;
}
void crc8init(FAR void *ctx)
{
FAR struct crc8_ctx *crc = (FAR struct crc8_ctx *)ctx;
memset(crc, 0, sizeof(struct crc8_ctx));
}
void crcsetkey(FAR void *ctx, FAR const uint8_t *key, uint16_t len)
{
memcpy(ctx, key, len);
}
int crc8update(FAR void *ctx, FAR const uint8_t *buf, size_t len)
{
FAR struct crc8_ctx *crc = (FAR struct crc8_ctx *)ctx;
int i;
int j;
for (i = 0; i < len; i++)
{
if (crc->reflectin)
{
crc->initial ^= REFLECT8(buf[i]);
for (j = 0; j < 8; j++)
{
if (crc->initial & 0x80)
{
crc->initial = (crc->initial << 1) ^ crc->polynomial;
}
else
{
crc->initial = crc->initial << 1;
}
}
}
else
{
crc->initial ^= buf[i];
for (j = 0; j < 8; j++)
{
if (crc->initial & 0x80)
{
crc->initial = (crc->initial << 1) ^ crc->polynomial;
}
else
{
crc->initial = crc->initial << 1;
}
}
}
}
return 0;
}
void crc8final(FAR uint8_t *digest, FAR void *ctx)
{
FAR struct crc8_ctx *crc = (FAR struct crc8_ctx *)ctx;
uint8_t result = crc->initial;
if (crc->reflectout)
{
result = ((result & 0xf0) >> 4) | ((result & 0x0f) << 4);
result = ((result & 0xcc) >> 2) | ((result & 0x33) << 2);
result = ((result & 0xaa) >> 1) | ((result & 0x55) << 1);
}
result ^= crc->xorout;
memcpy(digest, &result, sizeof(uint8_t));
}
void crc16init(FAR void *ctx)
{
FAR struct crc16_ctx *crc = (FAR struct crc16_ctx *)ctx;
memset(crc, 0, sizeof(struct crc16_ctx));
}
int crc16update(FAR void *ctx, FAR const uint8_t *buf, size_t len)
{
FAR struct crc16_ctx *crc = (FAR struct crc16_ctx *)ctx;
int i;
int j;
for (i = 0; i < len; i++)
{
if (crc->reflectin)
{
crc->initial ^= (REFLECT8(buf[i]) << 8);
for (j = 0; j < 8; j++)
{
if (crc->initial & 0x8000)
{
crc->initial = (crc->initial << 1) ^ crc->polynomial;
}
else
{
crc->initial = crc->initial << 1;
}
}
}
else
{
crc->initial ^= (buf[i] << 8);
for (j = 0; j < 8; j++)
{
if (crc->initial & 0x8000)
{
crc->initial = (crc->initial << 1) ^ crc->polynomial;
}
else
{
crc->initial = crc->initial << 1;
}
}
}
}
return 0;
}
void crc16final(FAR uint8_t *digest, FAR void *ctx)
{
FAR struct crc16_ctx *crc = (FAR struct crc16_ctx *)ctx;
uint16_t result = crc->initial;
if (crc->reflectout)
{
result = ((result & 0x5555) << 1) | ((result & 0xaaaa) >> 1);
result = ((result & 0x3333) << 2) | ((result & 0xcccc) >> 2);
result = ((result & 0x0f0f) << 4) | ((result & 0xf0f0) >> 4);
result = ((result & 0x00ff) << 8) | ((result & 0xff00) >> 8);
}
result ^= crc->xorout;
memcpy(digest, &result, sizeof(uint16_t));
}
void crc32init(FAR void *ctx)
{
FAR struct crc32_ctx *crc = (FAR struct crc32_ctx *)ctx;
memset(crc, 0, sizeof(struct crc32_ctx));
}
int crc32update(FAR void *ctx, FAR const uint8_t *buf, size_t len)
{
FAR struct crc32_ctx *crc = (FAR struct crc32_ctx *)ctx;
int i;
int j;
for (i = 0; i < len; i++)
{
if (crc->reflectin)
{
crc->initial ^= (REFLECT8(buf[i]) << 24);
for (j = 0; j < 8; j++)
{
if (crc->initial & 0x80000000)
{
crc->initial = (crc->initial << 1) ^ crc->polynomial;
}
else
{
crc->initial = crc->initial << 1;
}
}
}
else
{
crc->initial ^= (buf[i] << 24);
for (j = 0; j < 8; j++)
{
if (crc->initial & 0x80000000)
{
crc->initial = (crc->initial << 1) ^ crc->polynomial;
}
else
{
crc->initial = crc->initial << 1;
}
}
}
}
return 0;
}
void crc32final(FAR uint8_t *digest, FAR void *ctx)
{
FAR struct crc32_ctx *crc = (FAR struct crc32_ctx *)ctx;
uint32_t result = crc->initial;
if (crc->reflectout)
{
result = ((result & 0x55555555) << 1) | ((result & 0xaaaaaaaa) >> 1);
result = ((result & 0x33333333) << 2) | ((result & 0xcccccccc) >> 2);
result = ((result & 0x0f0f0f0f) << 4) | ((result & 0xf0f0f0f0) >> 4);
result = ((result & 0x00ff00ff) << 8) | ((result & 0xff00ff00) >> 8);
result = ((result & 0x0000ffff) << 16) | ((result & 0xffff0000) >> 16);
}
result ^= crc->xorout;
memcpy(digest, &result, sizeof(uint32_t));
}