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Add convenience function to hash a buffer.

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* cipher/sha1.c (sha1_hash_buffer): New.

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2015-02-26 15:35:49 +01:00
parent d2323ce6fd
commit 2e7a3ed390
No known key found for this signature in database
GPG Key ID: E3FDFF218E45B72B
2 changed files with 19 additions and 1 deletions
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19
cipher/sha1.c
View File

@ -52,7 +52,7 @@ static void
burn_stack (int bytes)
{
char buf[128];
wipememory(buf,sizeof buf);
bytes -= sizeof buf;
if (bytes > 0)
@ -323,6 +323,23 @@ sha1_read( SHA1_CONTEXT *hd )
return hd->buf;
}
/****************
* Shortcut functions which puts the hash value of the supplied buffer
* into outbuf which must have a size of 20 bytes.
*/
void
sha1_hash_buffer (char *outbuf, const char *buffer, size_t length)
{
SHA1_CONTEXT hd;
sha1_init (&hd);
sha1_write (&hd, (byte*)buffer, length);
sha1_final (&hd);
memcpy (outbuf, hd.buf, 20);
}
/****************
* Return some information about the algorithm. We need algo here to
* distinguish different flavors of the algorithm.

1
include/cipher.h
View File

@ -157,6 +157,7 @@ void md_stop_debug( MD_HANDLE a );
} while(0)
void rmd160_hash_buffer (char *outbuf, const char *buffer, size_t length);
void sha1_hash_buffer (char *outbuf, const char *buffer, size_t length);
/*-- cipher.c --*/