TeaSpeak/tomcrypt
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replace packed parameter struct with offsets into a unsigned char buffer.

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This commit is contained in:
Kelvin Sherlock 2017-04-10 10:40:20 -04:00
parent 6acdfe9a55
commit 6b46b447b5
2 changed files with 59 additions and 24 deletions
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41
src/hashes/blake2b.c
View File

@ -32,9 +32,27 @@ enum blake2b_constant {
BLAKE2B_OUTBYTES = 64,
BLAKE2B_KEYBYTES = 64,
BLAKE2B_SALTBYTES = 16,
BLAKE2B_PERSONALBYTES = 16
BLAKE2B_PERSONALBYTES = 16,
BLAKE2B_PARAM_SIZE = 64
};
/* param offsets */
enum {
O_DIGEST_LENGTH = 0,
O_KEY_LENGTH = 1,
O_FANOUT = 2,
O_DEPTH = 3,
O_LEAF_LENGTH = 4,
O_NODE_OFFSET = 8,
O_XOF_LENGTH = 12,
O_NODE_DEPTH = 16,
O_INNER_LENGTH = 17,
O_RESERVED = 18,
O_SALT = 32,
O_PERSONAL = 48
};
/*
struct blake2b_param {
unsigned char digest_length;
unsigned char key_length;
@ -49,7 +67,7 @@ struct blake2b_param {
unsigned char salt[BLAKE2B_SALTBYTES];
unsigned char personal[BLAKE2B_PERSONALBYTES];
};
*/
const struct ltc_hash_descriptor blake2b_160_desc =
{
@ -167,9 +185,8 @@ static void blake2b_init0(hash_state *md)
}
/* init xors IV with input parameter block */
static int blake2b_init_param(hash_state *md, const struct blake2b_param *P)
static int blake2b_init_param(hash_state *md, const unsigned char *P)
{
const unsigned char *p = (const unsigned char *)(P);
unsigned long i;
blake2b_init0(md);
@ -177,29 +194,29 @@ static int blake2b_init_param(hash_state *md, const struct blake2b_param *P)
/* IV XOR ParamBlock */
for (i = 0; i < 8; ++i) {
ulong64 tmp;
LOAD64L(tmp, p + i * 8);
LOAD64L(tmp, P + i * 8);
md->blake2b.h[i] ^= tmp;
}
md->blake2b.outlen = P->digest_length;
md->blake2b.outlen = P[O_DIGEST_LENGTH];
return CRYPT_OK;
}
int blake2b_init(hash_state *md, unsigned long outlen)
{
struct blake2b_param P;
unsigned char P[BLAKE2B_PARAM_SIZE];
LTC_ARGCHK(md != NULL);
if ((!outlen) || (outlen > BLAKE2B_OUTBYTES))
return CRYPT_INVALID_ARG;
XMEMSET(&P, 0, sizeof(P));
XMEMSET(P, 0, sizeof(P));
P.digest_length = (unsigned char)outlen;
P.fanout = 1;
P.depth = 1;
return blake2b_init_param(md, &P);
P[O_DIGEST_LENGTH] = (unsigned char)outlen;
P[O_FANOUT] = 1;
P[O_DEPTH] = 1;
return blake2b_init_param(md, P);
}
int blake2b_160_init(hash_state *md) { return blake2b_init(md, 20); }

42
src/hashes/blake2s.c
View File

@ -32,21 +32,40 @@ enum blake2s_constant {
BLAKE2S_OUTBYTES = 32,
BLAKE2S_KEYBYTES = 32,
BLAKE2S_SALTBYTES = 8,
BLAKE2S_PERSONALBYTES = 8
BLAKE2S_PERSONALBYTES = 8,
BLAKE2S_PARAM_SIZE = 32
};
/* param offsets */
enum {
O_DIGEST_LENGTH = 0,
O_KEY_LENGTH = 1,
O_FANOUT = 2,
O_DEPTH = 3,
O_LEAF_LENGTH = 4,
O_NODE_OFFSET = 8,
O_XOF_LENGTH = 12,
O_NODE_DEPTH = 14,
O_INNER_LENGTH = 15,
O_SALT = 16,
O_PERSONAL = 24
};
/*
struct blake2s_param {
unsigned char digest_length;
unsigned char key_length;
unsigned char fanout;
unsigned char depth;
ulong32 leaf_length;
unsigned char node_offset[6];
ulong32 node_offset;
ushort16 xof_length;
unsigned char node_depth;
unsigned char inner_length;
unsigned char salt[BLAKE2S_SALTBYTES];
unsigned char personal[BLAKE2S_PERSONALBYTES];
};
*/
const struct ltc_hash_descriptor blake2s_128_desc =
{
@ -160,41 +179,40 @@ static int blake2s_init0(hash_state *md)
}
/* init2 xors IV with input parameter block */
static int blake2s_init_param(hash_state *md, const struct blake2s_param *P)
static int blake2s_init_param(hash_state *md, const unsigned char *P)
{
unsigned long i;
unsigned char *p = (unsigned char *)(P);
blake2s_init0(md);
/* IV XOR ParamBlock */
for (i = 0; i < 8; ++i) {
ulong32 tmp;
LOAD32L(tmp, p + i * 4);
LOAD32L(tmp, P + i * 4);
md->blake2s.h[i] ^= tmp;
}
md->blake2s.outlen = P->digest_length;
md->blake2s.outlen = P[O_DIGEST_LENGTH];
return CRYPT_OK;
}
/* Sequential blake2s initialization */
int blake2s_init(hash_state *md, unsigned long outlen)
{
struct blake2s_param P;
unsigned char P[BLAKE2S_PARAM_SIZE];
LTC_ARGCHK(md != NULL);
if ((!outlen) || (outlen > BLAKE2S_OUTBYTES))
return CRYPT_INVALID_ARG;
XMEMSET(&P, 0, sizeof(P));
XMEMSET(P, 0, sizeof(P));
P.digest_length = (unsigned char)outlen;
P[O_DIGEST_LENGTH] = (unsigned char)outlen;
P.fanout = 1;
P.depth = 1;
P[O_FANOUT] = 1;
P[O_DEPTH] = 1;
return blake2s_init_param(md, &P);
return blake2s_init_param(md, P);
}
int blake2s_128_init(hash_state *md) { return blake2s_init(md, 16); }