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
2026-04-29 14:07:51 +02:00
commit d074cc7c07
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+// Pbkdf2HmacSha1.cpp
+
+#include "StdAfx.h"
+
+#include <string.h>
+
+#include "../../../C/CpuArch.h"
+
+#include "HmacSha1.h"
+#include "Pbkdf2HmacSha1.h"
+
+namespace NCrypto {
+namespace NSha1 {
+
+void Pbkdf2Hmac(const Byte *pwd, size_t pwdSize,
+    const Byte *salt, size_t saltSize,
+    UInt32 numIterations,
+    Byte *key, size_t keySize)
+{
+  MY_ALIGN (16)
+  CHmac baseCtx;
+  baseCtx.SetKey(pwd, pwdSize);
+  
+  for (UInt32 i = 1; keySize != 0; i++)
+  {
+    MY_ALIGN (16)
+    CHmac ctx;
+    ctx = baseCtx;
+    ctx.Update(salt, saltSize);
+  
+    MY_ALIGN (16)
+    UInt32 u[kNumDigestWords];
+    SetBe32(u, i)
+    
+    ctx.Update((const Byte *)u, 4);
+    ctx.Final((Byte *)u);
+
+    ctx = baseCtx;
+    ctx.GetLoopXorDigest1((void *)u, numIterations - 1);
+
+    const unsigned curSize = (keySize < kDigestSize) ? (unsigned)keySize : kDigestSize;
+    memcpy(key, (const Byte *)u, curSize);
+    key += curSize;
+    keySize -= curSize;
+  }
+}
+
+}}