hmac_sha256 960 maint/gnulib/lib/gc-gnulib.c hmac_sha256 (key, keylen, in, inlen, resbuf); hmac_sha256 45 maint/gnulib/lib/hmac.h hmac_sha256 (const void *key, size_t keylen, hmac_sha256 33 maint/gnulib/tests/test-hmac-sha256.c if (hmac_sha256 (key, key_len, data, data_len, out) != 0)