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diff --git a/7zip/Crypto/Hash/Pbkdf2HmacSha1.h b/7zip/Crypto/Hash/Pbkdf2HmacSha1.h
new file mode 100755
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+++ b/7zip/Crypto/Hash/Pbkdf2HmacSha1.h
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+// Pbkdf2HmacSha1.h
+// Password-Based Key Derivation Function (RFC 2898, PKCS #5) based on HMAC-SHA-1
+
+#ifndef __PBKDF2HMACSHA1_H
+#define __PBKDF2HMACSHA1_H
+
+#include <stddef.h>
+#include "../../../Common/Types.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);
+
+void Pbkdf2Hmac32(const Byte *pwd, size_t pwdSize, const UInt32 *salt, size_t saltSize, 
+    UInt32 numIterations, UInt32 *key, size_t keySize);
+
+}}
+
+#endif