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Test whether the crypto library supports the HMAC algorithm

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When initialising HMAC support check that the crypto library
supports the algorithm rather than just assuming it is supported.
This commit is contained in:
Mark Andrews 2023-02-24 12:59:18 +11:00
parent ffebd217f5
commit 97627c554b
2 changed files with 8 additions and 4 deletions
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4
lib/dns/dst_api.c
View file

@ -199,9 +199,7 @@ dst_lib_init(isc_mem_t *mctx, const char *engine) {
memset(dst_t_func, 0, sizeof(dst_t_func));
RETERR(dst__openssl_init(engine)); /* Sets FIPS mode. */
if (!isc_fips_mode()) {
RETERR(dst__hmacmd5_init(&dst_t_func[DST_ALG_HMACMD5]));
}
RETERR(dst__hmacmd5_init(&dst_t_func[DST_ALG_HMACMD5]));
RETERR(dst__hmacsha1_init(&dst_t_func[DST_ALG_HMACSHA1]));
RETERR(dst__hmacsha224_init(&dst_t_func[DST_ALG_HMACSHA224]));
RETERR(dst__hmacsha256_init(&dst_t_func[DST_ALG_HMACSHA256]));

8
lib/dns/hmac_link.c
View file

@ -127,7 +127,13 @@
isc_result_t dst__hmac##alg##_init(dst_func_t **funcp) { \
REQUIRE(funcp != NULL); \
if (*funcp == NULL) { \
*funcp = &hmac##alg##_functions; \
isc_hmac_t *ctx = isc_hmac_new(); \
if (isc_hmac_init(ctx, "test", 4, ISC_MD_##alg) == \
ISC_R_SUCCESS) \
{ \
*funcp = &hmac##alg##_functions; \
} \
isc_hmac_free(ctx); \
} \
return (ISC_R_SUCCESS); \
}