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Support RC4 in EVP

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This commit is contained in:
Love Hornquist Astrand
2009-08-10 11:48:12 +02:00
parent 8276a469ab
commit 21e8270aa2
5 changed files with 320 additions and 89 deletions
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24
lib/hcrypto/evp.c
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@@ -546,19 +546,35 @@ EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *c)
if (c->cipher && c->cipher->cleanup)
c->cipher->cleanup(c);
if (c->cipher_data) {
memset(c->cipher_data, 0, c->cipher->ctx_size);
free(c->cipher_data);
c->cipher_data = NULL;
}
return 1;
}
#if 0
/**
* If the cipher type supports it, change the key length
*
* @param c the cipher context to change the key length for
* @param length new key length
*
* @return 1 on success.
*
* @ingroup hcrypto_evp
*/
int
EVP_CIPHER_CTX_set_key_length(EVP_CIPHER_CTX *c, int length)
{
if ((c->cipher->flags & EVP_CIPH_VARIABLE_LENGTH) && length > 0) {
c->key_len = length;
return 1;
}
return 0;
}
#if 0
int
EVP_CIPHER_CTX_set_padding(EVP_CIPHER_CTX *c, int pad)
{
@@ -737,7 +753,7 @@ EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *c, ENGINE *engine,
return 0;
}
switch (EVP_CIPHER_CTX_flags(ctx)) {
switch (EVP_CIPHER_CTX_mode(ctx)) {
case EVP_CIPH_CBC_MODE:
assert(EVP_CIPHER_CTX_iv_length(ctx) <= sizeof(ctx->iv));
@@ -746,6 +762,10 @@ EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *c, ENGINE *engine,
memcpy(ctx->oiv, iv, EVP_CIPHER_CTX_iv_length(ctx));
memcpy(ctx->iv, ctx->oiv, EVP_CIPHER_CTX_iv_length(ctx));
break;
case EVP_CIPH_STREAM_CIPHER:
break;
default:
return 0;
}