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tls: add 2nd cipher_id, TLS_RSA_WITH_AES_128_CBC_SHA, so far it doesn't work

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Good news that TLS_RSA_WITH_AES_256_CBC_SHA256 still works with new code ;)

This change adds inevitable extension to have different sized hashes and AES key sizes.
In libbb, md5_end() and shaX_end() are extended to return result size instead of void -
this helps *a lot* in tls (the cost is ~5 bytes per _end() function).

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2017-01-24 16:00:54 +01:00
parent 9a64c3337c
commit 49ecee098d
6 changed files with 290 additions and 192 deletions
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15
libbb/hash_md5_sha.c
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@ -458,7 +458,7 @@ void FAST_FUNC md5_hash(md5_ctx_t *ctx, const void *buffer, size_t len)
* endian byte order, so that a byte-wise output yields to the wanted
* ASCII representation of the message digest.
*/
void FAST_FUNC md5_end(md5_ctx_t *ctx, void *resbuf)
unsigned FAST_FUNC md5_end(md5_ctx_t *ctx, void *resbuf)
{
/* MD5 stores total in LE, need to swap on BE arches: */
common64_end(ctx, /*swap_needed:*/ BB_BIG_ENDIAN);
@ -472,6 +472,7 @@ void FAST_FUNC md5_end(md5_ctx_t *ctx, void *resbuf)
}
memcpy(resbuf, ctx->hash, sizeof(ctx->hash[0]) * 4);
return sizeof(ctx->hash[0]) * 4;
}
@ -865,7 +866,7 @@ void FAST_FUNC sha512_hash(sha512_ctx_t *ctx, const void *buffer, size_t len)
#endif /* NEED_SHA512 */
/* Used also for sha256 */
void FAST_FUNC sha1_end(sha1_ctx_t *ctx, void *resbuf)
unsigned FAST_FUNC sha1_end(sha1_ctx_t *ctx, void *resbuf)
{
unsigned hash_size;
@ -879,11 +880,13 @@ void FAST_FUNC sha1_end(sha1_ctx_t *ctx, void *resbuf)
for (i = 0; i < hash_size; ++i)
ctx->hash[i] = SWAP_BE32(ctx->hash[i]);
}
memcpy(resbuf, ctx->hash, sizeof(ctx->hash[0]) * hash_size);
hash_size *= sizeof(ctx->hash[0]);
memcpy(resbuf, ctx->hash, hash_size);
return hash_size;
}
#if NEED_SHA512
void FAST_FUNC sha512_end(sha512_ctx_t *ctx, void *resbuf)
unsigned FAST_FUNC sha512_end(sha512_ctx_t *ctx, void *resbuf)
{
unsigned bufpos = ctx->total64[0] & 127;
@ -915,6 +918,7 @@ void FAST_FUNC sha512_end(sha512_ctx_t *ctx, void *resbuf)
ctx->hash[i] = SWAP_BE64(ctx->hash[i]);
}
memcpy(resbuf, ctx->hash, sizeof(ctx->hash));
return sizeof(ctx->hash);
}
#endif /* NEED_SHA512 */
@ -1450,7 +1454,7 @@ void FAST_FUNC sha3_hash(sha3_ctx_t *ctx, const void *buffer, size_t len)
#endif
}
void FAST_FUNC sha3_end(sha3_ctx_t *ctx, void *resbuf)
unsigned FAST_FUNC sha3_end(sha3_ctx_t *ctx, void *resbuf)
{
/* Padding */
uint8_t *buf = (uint8_t*)ctx->state;
@ -1475,4 +1479,5 @@ void FAST_FUNC sha3_end(sha3_ctx_t *ctx, void *resbuf)
/* Output */
memcpy(resbuf, ctx->state, 64);
return 64;
}