1 files changed, 12 insertions, 3 deletions
diff --git a/com/BLAKE2/blake2s.h b/com/BLAKE2/blake2s.h
index d60d6d3..fd68168 100644
--- a/com/BLAKE2/blake2s.h
+++ b/com/BLAKE2/blake2s.h
@@ -45,6 +45,15 @@ void BLAKE2s_update(struct BLAKE2s_ctx *ctx, const void *d, size_t dd);
 void BLAKE2s_final(struct BLAKE2s_ctx *ctx, void *out);
 
 // All-in-one convenience function.
-int BLAKE2s(void *out, size_t outlen,       // return buffer for digest
-            const void *key, size_t keylen, // optional secret key
-            const void *in, size_t inlen);  // data to be hashed
+[[maybe_unused]] static int
+BLAKE2s(void *out, size_t outlen,       // return buffer for digest
+        const void *key, size_t keylen, // optional secret key
+        const void *in, size_t inlen)   // data to be hashed
+{
+  struct BLAKE2s_ctx ctx;
+  if (BLAKE2s_init(&ctx, outlen, key, keylen)) return -1;
+  BLAKE2s_update(&ctx, in, inlen);
+  BLAKE2s_final(&ctx, out);
+
+  return 0;
+}