1 files changed, 27 insertions, 0 deletions
diff --git a/CPP/7zip/Crypto/HmacSha256.h b/CPP/7zip/Crypto/HmacSha256.h
new file mode 100644
index 00000000..233424a0
--- /dev/null
+++ b/CPP/7zip/Crypto/HmacSha256.h
@@ -0,0 +1,27 @@
+// HmacSha256.h
+// Implements HMAC-SHA-256 (RFC2104, FIPS-198)
+
+#ifndef __CRYPTO_HMAC_SHA256_H
+#define __CRYPTO_HMAC_SHA256_H
+
+#include "../../../C/Sha256.h"
+
+namespace NCrypto {
+namespace NSha256 {
+
+const unsigned kDigestSize = SHA256_DIGEST_SIZE;
+
+class CHmac
+{
+  CSha256 _sha;
+  CSha256 _sha2;
+public:
+  void SetKey(const Byte *key, size_t keySize);
+  void Update(const Byte *data, size_t dataSize) { Sha256_Update(&_sha, data, dataSize); }
+  void Final(Byte *mac);
+  // void Final(Byte *mac, size_t macSize);
+};
+
+}}
+
+#endif