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Remove wrappers

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This commit is contained in:
Frank Denis 2014-04-10 22:39:43 -07:00
parent a2fc728956
commit 030fac65a8
3 changed files with 86 additions and 143 deletions
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107
src/libsodium/crypto_auth/hmacsha256/cp/hmac_hmacsha256.c
View File

@ -33,67 +33,40 @@
#include <sys/types.h>
#include <limits.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
static void
HMAC__SHA256_Init(crypto_auth_hmacsha256_state * ctx, const void * _K, size_t Klen)
{
unsigned char pad[64];
unsigned char khash[32];
const unsigned char * K = (const unsigned char *) _K;
size_t i;
if (Klen > 64) {
crypto_hash_sha256_init(&ctx->ictx);
crypto_hash_sha256_update(&ctx->ictx, K, Klen);
crypto_hash_sha256_final(&ctx->ictx, khash);
K = khash;
Klen = 32;
}
crypto_hash_sha256_init(&ctx->ictx);
memset(pad, 0x36, 64);
for (i = 0; i < Klen; i++) {
pad[i] ^= K[i];
}
crypto_hash_sha256_update(&ctx->ictx, pad, 64);
crypto_hash_sha256_init(&ctx->octx);
memset(pad, 0x5c, 64);
for (i = 0; i < Klen; i++) {
pad[i] ^= K[i];
}
crypto_hash_sha256_update(&ctx->octx, pad, 64);
sodium_memzero((void *) khash, 32);
}
static void
HMAC__SHA256_Update(crypto_auth_hmacsha256_state * ctx, const void *in, size_t len)
{
crypto_hash_sha256_update(&ctx->ictx, in, len);
}
static void
HMAC__SHA256_Final(unsigned char digest[32], crypto_auth_hmacsha256_state * ctx)
{
unsigned char ihash[32];
crypto_hash_sha256_final(&ctx->ictx, ihash);
crypto_hash_sha256_update(&ctx->octx, ihash, 32);
crypto_hash_sha256_final(&ctx->octx, digest);
sodium_memzero((void *) ihash, 32);
}
int
crypto_auth_hmacsha256_init(crypto_auth_hmacsha256_state *state,
const unsigned char *key,
const size_t keylen)
size_t keylen)
{
HMAC__SHA256_Init(state, key, keylen);
unsigned char pad[64];
unsigned char khash[32];
size_t i;
if (keylen > 64) {
crypto_hash_sha256_init(&state->ictx);
crypto_hash_sha256_update(&state->ictx, key, keylen);
crypto_hash_sha256_final(&state->ictx, khash);
key = khash;
keylen = 32;
}
crypto_hash_sha256_init(&state->ictx);
memset(pad, 0x36, 64);
for (i = 0; i < keylen; i++) {
pad[i] ^= key[i];
}
crypto_hash_sha256_update(&state->ictx, pad, 64);
crypto_hash_sha256_init(&state->octx);
memset(pad, 0x5c, 64);
for (i = 0; i < keylen; i++) {
pad[i] ^= key[i];
}
crypto_hash_sha256_update(&state->octx, pad, 64);
sodium_memzero((void *) khash, 32);
return 0;
}
@ -103,11 +76,7 @@ crypto_auth_hmacsha256_update(crypto_auth_hmacsha256_state *state,
const unsigned char *in,
unsigned long long inlen)
{
if (inlen > SIZE_MAX) {
sodium_memzero((void *) state, sizeof *state);
return -1;
}
HMAC__SHA256_Update(state, (const void *) in, (size_t) inlen);
crypto_hash_sha256_update(&state->ictx, in, inlen);
return 0;
}
@ -116,7 +85,13 @@ int
crypto_auth_hmacsha256_final(crypto_auth_hmacsha256_state *state,
unsigned char *out)
{
HMAC__SHA256_Final(out, state);
unsigned char ihash[32];
crypto_hash_sha256_final(&state->ictx, ihash);
crypto_hash_sha256_update(&state->octx, ihash, 32);
crypto_hash_sha256_final(&state->octx, out);
sodium_memzero((void *) ihash, 32);
return 0;
}
@ -125,15 +100,11 @@ int
crypto_auth(unsigned char *out, const unsigned char *in,
unsigned long long inlen, const unsigned char *k)
{
crypto_auth_hmacsha256_state ctx;
crypto_auth_hmacsha256_state state;
if (inlen > SIZE_MAX) {
sodium_memzero((void *) out, crypto_auth_BYTES);
return -1;
}
HMAC__SHA256_Init(&ctx, k, crypto_auth_KEYBYTES);
HMAC__SHA256_Update(&ctx, (const void *) in, (size_t) inlen);
HMAC__SHA256_Final(out, &ctx);
crypto_auth_hmacsha256_init(&state, k, crypto_auth_KEYBYTES);
crypto_auth_hmacsha256_update(&state, in, inlen);
crypto_auth_hmacsha256_final(&state, out);
return 0;
}

120
src/libsodium/crypto_hash/sha256/cp/hash_sha256.c
View File

@ -37,10 +37,6 @@
#include <stdlib.h>
#include <string.h>
void _SHA256_Init(crypto_hash_sha256_state *);
void _SHA256_Update(crypto_hash_sha256_state *, const void *, size_t);
void _SHA256_Final(unsigned char [32], crypto_hash_sha256_state *);
/* Avoid namespace collisions with BSD <sys/endian.h>. */
#define be32dec _sha256_be32dec
#define be32enc _sha256_be32enc
@ -108,7 +104,7 @@ be32dec_vect(uint32_t *dst, const unsigned char *src, size_t len)
W[i] + k)
static void
SHA256_Transform(uint32_t * state, const unsigned char block[64])
SHA256_Transform(uint32_t *state, const unsigned char block[64])
{
uint32_t W[64];
uint32_t S[8];
@ -204,82 +200,33 @@ static unsigned char PAD[64] = {
};
static void
SHA256_Pad(crypto_hash_sha256_state * ctx)
SHA256_Pad(crypto_hash_sha256_state *state)
{
unsigned char len[8];
uint32_t r, plen;
be32enc_vect(len, ctx->count, 8);
be32enc_vect(len, state->count, 8);
r = (ctx->count[1] >> 3) & 0x3f;
r = (state->count[1] >> 3) & 0x3f;
plen = (r < 56) ? (56 - r) : (120 - r);
_SHA256_Update(ctx, PAD, (size_t)plen);
crypto_hash_sha256_update(state, PAD, (unsigned long long) plen);
_SHA256_Update(ctx, len, 8);
}
void
_SHA256_Init(crypto_hash_sha256_state * ctx)
{
ctx->count[0] = ctx->count[1] = 0;
ctx->state[0] = 0x6A09E667;
ctx->state[1] = 0xBB67AE85;
ctx->state[2] = 0x3C6EF372;
ctx->state[3] = 0xA54FF53A;
ctx->state[4] = 0x510E527F;
ctx->state[5] = 0x9B05688C;
ctx->state[6] = 0x1F83D9AB;
ctx->state[7] = 0x5BE0CD19;
}
void
_SHA256_Update(crypto_hash_sha256_state * ctx, const void *in, size_t len)
{
uint32_t bitlen[2];
uint32_t r;
const unsigned char *src = (const unsigned char *) in;
r = (ctx->count[1] >> 3) & 0x3f;
bitlen[1] = ((uint32_t)len) << 3;
bitlen[0] = (uint32_t)(len >> 29);
if ((ctx->count[1] += bitlen[1]) < bitlen[1]) {
ctx->count[0]++;
}
ctx->count[0] += bitlen[0];
if (len < 64 - r) {
memcpy(&ctx->buf[r], src, len);
return;
}
memcpy(&ctx->buf[r], src, 64 - r);
SHA256_Transform(ctx->state, ctx->buf);
src += 64 - r;
len -= 64 - r;
while (len >= 64) {
SHA256_Transform(ctx->state, src);
src += 64;
len -= 64;
}
memcpy(ctx->buf, src, len);
}
void
_SHA256_Final(unsigned char digest[32], crypto_hash_sha256_state * ctx)
{
SHA256_Pad(ctx);
be32enc_vect(digest, ctx->state, 32);
sodium_memzero((void *) ctx, sizeof *ctx);
crypto_hash_sha256_update(state, len, 8);
}
int
crypto_hash_sha256_init(crypto_hash_sha256_state *state)
{
_SHA256_Init(state);
state->count[0] = state->count[1] = 0;
state->state[0] = 0x6A09E667;
state->state[1] = 0xBB67AE85;
state->state[2] = 0x3C6EF372;
state->state[3] = 0xA54FF53A;
state->state[4] = 0x510E527F;
state->state[5] = 0x9B05688C;
state->state[6] = 0x1F83D9AB;
state->state[7] = 0x5BE0CD19;
return 0;
}
@ -289,11 +236,34 @@ crypto_hash_sha256_update(crypto_hash_sha256_state *state,
const unsigned char *in,
unsigned long long inlen)
{
if (inlen > SIZE_MAX) {
sodium_memzero(state, sizeof *state);
return -1;
uint32_t bitlen[2];
uint32_t r;
r = (state->count[1] >> 3) & 0x3f;
bitlen[1] = ((uint32_t)inlen) << 3;
bitlen[0] = (uint32_t)(inlen >> 29);
if ((state->count[1] += bitlen[1]) < bitlen[1]) {
state->count[0]++;
}
_SHA256_Update(state, (const void *) in, (size_t) inlen);
state->count[0] += bitlen[0];
if (inlen < 64 - r) {
memcpy(&state->buf[r], in, inlen);
return 0;
}
memcpy(&state->buf[r], in, 64 - r);
SHA256_Transform(state->state, state->buf);
in += 64 - r;
inlen -= 64 - r;
while (inlen >= 64) {
SHA256_Transform(state->state, in);
in += 64;
inlen -= 64;
}
memcpy(state->buf, in, inlen);
return 0;
}
@ -302,7 +272,9 @@ int
crypto_hash_sha256_final(crypto_hash_sha256_state *state,
unsigned char *out)
{
_SHA256_Final(out, state);
SHA256_Pad(state);
be32enc_vect(out, state->state, 32);
sodium_memzero((void *) state, sizeof *state);
return 0;
}

2
src/libsodium/include/sodium/crypto_auth_hmacsha256.h
View File

@ -38,7 +38,7 @@ int crypto_auth_hmacsha256_verify(const unsigned char *,const unsigned char *,un
SODIUM_EXPORT
int crypto_auth_hmacsha256_init(crypto_auth_hmacsha256_state *state,
const unsigned char *key,
const size_t keylen);
size_t keylen);
SODIUM_EXPORT
int crypto_auth_hmacsha256_update(crypto_auth_hmacsha256_state *state,