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documentation and fix des

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git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@23628 ec53bebd-3082-4978-b11e-865c3cabbd6b
This commit is contained in:
Love Hörnquist Åstrand
2008-08-18 20:13:55 +00:00
parent 0b3d8063c7
commit e0efb981f0
1 changed files with 24 additions and 3 deletions
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27
lib/hcrypto/evp.c
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@@ -63,6 +63,17 @@ RCSID("$Id$");
* @page page_evp EVP - generic crypto interface * @page page_evp EVP - generic crypto interface
* *
* See the library functions here: @ref hcrypto_evp * See the library functions here: @ref hcrypto_evp
*
* @section evp_cipher EVP Cipher
*
* The use of EVP_CipherInit_ex() and EVP_Cipher() is pretty easy to
* understand forward, then EVP_CipherUpdate() and
* EVP_CipherFinal_ex() really needs an example to explain.
*
* @example example_evp_cipher.c
*
* This is an example how to use EVP_CipherInit_ex(),
* EVP_CipherUpdate() and EVP_CipherFinal_ex().
*/ */
struct hc_EVP_MD_CTX { struct hc_EVP_MD_CTX {
@@ -800,6 +811,11 @@ EVP_CipherInit_ex(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *c, ENGINE *engine,
* @param in input data to the operation. * @param in input data to the operation.
* @param inlen length of data. * @param inlen length of data.
* *
* The output buffer length should at least be EVP_CIPHER_block_size()
* byte longer then the input length.
*
* See @ref evp_cipher for an example how to use this function.
*
* @return 1 on success. * @return 1 on success.
*/ */
@@ -817,6 +833,11 @@ EVP_CipherUpdate(EVP_CIPHER_CTX *ctx, void *out, int *outlen,
* @param out output data from the operation. * @param out output data from the operation.
* @param outlen output length * @param outlen output length
* *
* The input length needs to be at least EVP_CIPHER_block_size() bytes
* long.
*
* See @ref evp_cipher for an example how to use this function.
*
* @return 1 on success. * @return 1 on success.
*/ */
@@ -1087,15 +1108,15 @@ des_cbc_do_cipher(EVP_CIPHER_CTX *ctx,
unsigned int size) unsigned int size)
{ {
DES_key_schedule *k = ctx->cipher_data; DES_key_schedule *k = ctx->cipher_data;
DES_ede3_cbc_encrypt(in, out, size, DES_cbc_encrypt(in, out, size,
k, (DES_cblock *)ctx->iv, ctx->encrypt); k, (DES_cblock *)ctx->iv, ctx->encrypt);
return 1; return 1;
} }
static int static int
des_cbc_cleanup(EVP_CIPHER_CTX *ctx) des_cbc_cleanup(EVP_CIPHER_CTX *ctx)
{ {
memset(ctx->cipher_data, 0, sizeof(struct des_ede3_cbc)); memset(ctx->cipher_data, 0, sizeof(struct DES_key_schedule));
return 1; return 1;
} }