-h->is_sha1 = is_sha1;
-h->hashlen = is_sha1 ? 20 : 32;
-gcry_md_open(&h->sha, is_sha1 ? GCRY_MD_SHA1 : GCRY_MD_SHA256, 0);
+/*XXX extend for sha512 */
+switch (h->method = m)
+ {
+ case HASH_SHA1: h->hashlen = 20; gcry_md_open(&h->sha, GCRY_MD_SHA1, 0); break;
+ case HASH_SHA2_256: h->hashlen = 32; gcry_md_open(&h->sha, GCRY_MD_SHA256, 0); break;
+ case HASH_SHA2_384: h->hashlen = 48; gcry_md_open(&h->sha, GCRY_MD_SHA384, 0); break;
+ case HASH_SHA2_512: h->hashlen = 64; gcry_md_open(&h->sha, GCRY_MD_SHA512, 0); break;
+ case HASH_SHA3_256: h->hashlen = 32; gcry_md_open(&h->sha, GCRY_MD_SHA3_256, 0); break;
+ case HASH_SHA3_384: h->hashlen = 48; gcry_md_open(&h->sha, GCRY_MD_SHA3_384, 0); break;
+ case HASH_SHA3_512: h->hashlen = 64; gcry_md_open(&h->sha, GCRY_MD_SHA3_512, 0); break;
+ default: h->hashlen = 0; return FALSE;
+ }
+return TRUE;