Hakase/openssl-custom
1
0 Fork 0
Code Issues Pull Requests Releases Wiki Activity

Latest update.

Browse Source
This commit is contained in:
Hakase
2019-09-21 00:43:47 +09:00
parent 2e57f602ae
commit 62515c7d8d
1131 changed files with 47556 additions and 24957 deletions
Download Patch File Download Diff File Expand all files Collapse all files
crypto/cmac/cmac.c
+16 -6
View File
@@ -87,11 +87,13 @@ void CMAC_CTX_free(CMAC_CTX *ctx)
int CMAC_CTX_copy(CMAC_CTX *out, const CMAC_CTX *in)
{
int bl;
if (in->nlast_block == -1)
return 0;
if ((bl = EVP_CIPHER_CTX_block_size(in->cctx)) < 0)
return 0;
if (!EVP_CIPHER_CTX_copy(out->cctx, in->cctx))
return 0;
bl = EVP_CIPHER_CTX_block_size(in->cctx);
memcpy(out->k1, in->k1, bl);
memcpy(out->k2, in->k2, bl);
memcpy(out->tbl, in->tbl, bl);
@@ -104,6 +106,7 @@ int CMAC_Init(CMAC_CTX *ctx, const void *key, size_t keylen,
const EVP_CIPHER *cipher, ENGINE *impl)
{
static const unsigned char zero_iv[EVP_MAX_BLOCK_LENGTH] = { 0 };
/* All zeros means restart */
if (!key && !cipher && !impl && keylen == 0) {
/* Not initialised */
@@ -121,13 +124,15 @@ int CMAC_Init(CMAC_CTX *ctx, const void *key, size_t keylen,
/* Non-NULL key means initialisation complete */
if (key) {
int bl;
if (!EVP_CIPHER_CTX_cipher(ctx->cctx))
return 0;
if (!EVP_CIPHER_CTX_set_key_length(ctx->cctx, keylen))
return 0;
if (!EVP_EncryptInit_ex(ctx->cctx, NULL, NULL, key, zero_iv))
return 0;
bl = EVP_CIPHER_CTX_block_size(ctx->cctx);
if ((bl = EVP_CIPHER_CTX_block_size(ctx->cctx)) < 0)
return 0;
if (!EVP_Cipher(ctx->cctx, ctx->tbl, zero_iv, bl))
return 0;
make_kn(ctx->k1, ctx->tbl, bl);
@@ -146,15 +151,18 @@ int CMAC_Init(CMAC_CTX *ctx, const void *key, size_t keylen,
int CMAC_Update(CMAC_CTX *ctx, const void *in, size_t dlen)
{
const unsigned char *data = in;
size_t bl;
int bl;
if (ctx->nlast_block == -1)
return 0;
if (dlen == 0)
return 1;
bl = EVP_CIPHER_CTX_block_size(ctx->cctx);
if ((bl = EVP_CIPHER_CTX_block_size(ctx->cctx)) < 0)
return 0;
/* Copy into partial block if we need to */
if (ctx->nlast_block > 0) {
size_t nleft;
nleft = bl - ctx->nlast_block;
if (dlen < nleft)
nleft = dlen;
@@ -170,7 +178,7 @@ int CMAC_Update(CMAC_CTX *ctx, const void *in, size_t dlen)
return 0;
}
/* Encrypt all but one of the complete blocks left */
while (dlen > bl) {
while (dlen > (size_t)bl) {
if (!EVP_Cipher(ctx->cctx, ctx->tbl, data, bl))
return 0;
dlen -= bl;
@@ -186,9 +194,11 @@ int CMAC_Update(CMAC_CTX *ctx, const void *in, size_t dlen)
int CMAC_Final(CMAC_CTX *ctx, unsigned char *out, size_t *poutlen)
{
int i, bl, lb;
if (ctx->nlast_block == -1)
return 0;
bl = EVP_CIPHER_CTX_block_size(ctx->cctx);
if ((bl = EVP_CIPHER_CTX_block_size(ctx->cctx)) < 0)
return 0;
*poutlen = (size_t)bl;
if (!out)
return 1;