1 files changed, 2 insertions, 2 deletions
diff --git a/src/hash.h b/src/hash.h
index d1e65b968a..843423d7f7 100644
--- a/src/hash.h
+++ b/src/hash.h
@@ -12,7 +12,7 @@
 
 typedef struct {
     uint32_t s[32];
-    unsigned char buf[64];
+    uint32_t buf[16]; /* In big endian */
     size_t bytes;
 } secp256k1_sha256_t;
 
@@ -34,7 +34,7 @@ typedef struct {
     int retry;
 } secp256k1_rfc6979_hmac_sha256_t;
 
-static void secp256k1_rfc6979_hmac_sha256_initialize(secp256k1_rfc6979_hmac_sha256_t *rng, const unsigned char *key, size_t keylen, const unsigned char *msg, size_t msglen);
+static void secp256k1_rfc6979_hmac_sha256_initialize(secp256k1_rfc6979_hmac_sha256_t *rng, const unsigned char *key, size_t keylen, const unsigned char *msg, size_t msglen, const unsigned char *rnd, size_t rndlen);
 static void secp256k1_rfc6979_hmac_sha256_generate(secp256k1_rfc6979_hmac_sha256_t *rng, unsigned char *out, size_t outlen);
 static void secp256k1_rfc6979_hmac_sha256_finalize(secp256k1_rfc6979_hmac_sha256_t *rng);