chore: initial commit (extracted from Launchers monorepo)

Plugin: ns7zip v2.0.0
Architectures: x86-ansi, x86-unicode, amd64-unicode
License: LGPL-2.1-or-later

versions/25.01/CPP/7zip/Crypto/HmacSha1.h

@@ -0,0 +1,31 @@
+// HmacSha1.h
+// Implements HMAC-SHA-1 (RFC2104, FIPS-198)
+
+#ifndef ZIP7_INC_CRYPTO_HMAC_SHA1_H
+#define ZIP7_INC_CRYPTO_HMAC_SHA1_H
+
+#include "Sha1Cls.h"
+
+namespace NCrypto {
+namespace NSha1 {
+
+// Use:  SetKey(key, keySize); for () Update(data, size); FinalFull(mac);
+
+class CHmac
+{
+  CContext _sha;
+  CContext _sha2;
+public:
+  void SetKey(const Byte *key, size_t keySize);
+  void Update(const Byte *data, size_t dataSize) { _sha.Update(data, dataSize); }
+  
+  // Final() : mac is recommended to be aligned for 4 bytes
+  // GetLoopXorDigest1() : mac is required    to be aligned for 4 bytes
+  // The caller can use: UInt32 mac[NSha1::kNumDigestWords] and typecast to (Byte *) and (void *);
+  void Final(Byte *mac);
+  void GetLoopXorDigest1(void *mac, UInt32 numIteration);
+};
+
+}}
+
+#endif