diff --git a/sha256.c b/sha256.c
index eb9c5c0..a52f69b 100644
--- a/sha256.c
+++ b/sha256.c
@@ -156,3 +156,11 @@ void sha256_final(SHA256_CTX *ctx, BYTE hash[])
 		hash[i + 28] = (ctx->state[7] >> (24 - i * 8)) & 0x000000ff;
 	}
 }
+void sha256(BYTE hash[],BYTE data[],size_t len)
+{
+	SHA256_CTX ctx;
+	sha256_init(&ctx);
+	sha256_update(&ctx, data, len);
+	sha256_final(&ctx,hash);
+}
+