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Abstract SHA1 calculation.

This commit is contained in:
Jim Hague 2018-11-27 15:29:48 +00:00
parent 5e390a4b23
commit 0cdede21df
3 changed files with 18 additions and 2 deletions
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5
src/dnssec.c
View File

@ -209,6 +209,7 @@
#include "list.h"
#include "util/val_secalgo.h"
#include "anchor.h"
#include "tls.h"
#define SIGNATURE_VERIFIED 0x10000
#define NSEC3_ITERATION_COUNT_HIGH 0x20000
@ -1582,12 +1583,12 @@ static uint8_t *_getdns_nsec3_hash_label(uint8_t *label, size_t label_len,
(void)memcpy(dst, salt + 1, *salt);
dst += *salt;
(void)SHA1(buf, dst - buf, md);
_getdns_tls_sha1(buf, dst - buf, md);
if (iterations) {
(void)memcpy(buf + SHA_DIGEST_LENGTH, salt + 1, *salt);
while (iterations--) {
(void)memcpy(buf, md, SHA_DIGEST_LENGTH);
SHA1(buf, SHA_DIGEST_LENGTH + *salt, md);
_getdns_tls_sha1(buf, SHA_DIGEST_LENGTH + *salt, md);
}
}
*label = gldns_b32_ntop_extended_hex(

5
src/openssl/tls.c
View File

@ -747,4 +747,9 @@ unsigned char* _getdns_tls_hmac_end(struct mem_funcs* mfs, _getdns_tls_hmac* h,
return res;
}
void _getdns_tls_sha1(const void* data, size_t data_size, unsigned char* buf)
{
SHA1(data, data_size, buf);
}
/* tls.c */

10
src/tls.h
View File

@ -378,4 +378,14 @@ getdns_return_t _getdns_tls_hmac_add(_getdns_tls_hmac* h, const void* data, size
*/
unsigned char* _getdns_tls_hmac_end(struct mem_funcs* mfs, _getdns_tls_hmac* h, size_t* output_size);
/**
* Calculate a SHA1 hash.
*
* @param data the data to hash.
* @param data_size the size of the data to hash.
* @param buf the buffer to receive the hash. Must be at least
* SHA_DIGEST_LENGTH bytes.
*/
void _getdns_tls_sha1(const void* data, size_t data_size, unsigned char* buf);
#endif /* _GETDNS_TLS_H */