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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+// 7zAes.h
+
+#ifndef ZIP7_INC_CRYPTO_7Z_AES_H
+#define ZIP7_INC_CRYPTO_7Z_AES_H
+
+#include "../../Common/MyBuffer.h"
+#include "../../Common/MyCom.h"
+#include "../../Common/MyVector.h"
+
+#include "../ICoder.h"
+#include "../IPassword.h"
+
+namespace NCrypto {
+namespace N7z {
+
+const unsigned kKeySize = 32;
+const unsigned kSaltSizeMax = 16;
+const unsigned kIvSizeMax = 16; // AES_BLOCK_SIZE;
+
+class CKeyInfo
+{
+public:
+  unsigned NumCyclesPower;
+  unsigned SaltSize;
+  Byte Salt[kSaltSizeMax];
+  CByteBuffer Password;
+  Byte Key[kKeySize];
+
+  bool IsEqualTo(const CKeyInfo &a) const;
+  void CalcKey();
+
+  CKeyInfo() { ClearProps(); }
+  void ClearProps()
+  {
+    NumCyclesPower = 0;
+    SaltSize = 0;
+    for (unsigned i = 0; i < sizeof(Salt); i++)
+      Salt[i] = 0;
+  }
+
+  void Wipe()
+  {
+    Password.Wipe();
+    NumCyclesPower = 0;
+    SaltSize = 0;
+    Z7_memset_0_ARRAY(Salt);
+    Z7_memset_0_ARRAY(Key);
+  }
+
+#ifdef Z7_CPP_IS_SUPPORTED_default
+  CKeyInfo(const CKeyInfo &) = default;
+#endif
+  ~CKeyInfo() { Wipe(); }
+};
+
+class CKeyInfoCache
+{
+  unsigned Size;
+  CObjectVector<CKeyInfo> Keys;
+public:
+  CKeyInfoCache(unsigned size): Size(size) {}
+  bool GetKey(CKeyInfo &key);
+  void Add(const CKeyInfo &key);
+  void FindAndAdd(const CKeyInfo &key);
+};
+
+class CBase
+{
+  CKeyInfoCache _cachedKeys;
+protected:
+  CKeyInfo _key;
+  Byte _iv[kIvSizeMax];
+  unsigned _ivSize;
+  
+  void PrepareKey();
+  CBase();
+};
+
+class CBaseCoder:
+  public ICompressFilter,
+  public ICryptoSetPassword,
+  public CMyUnknownImp,
+  public CBase
+{
+  Z7_IFACE_COM7_IMP(ICompressFilter)
+  Z7_IFACE_COM7_IMP(ICryptoSetPassword)
+protected:
+  virtual ~CBaseCoder() {}
+  CMyComPtr<ICompressFilter> _aesFilter;
+};
+
+#ifndef Z7_EXTRACT_ONLY
+
+class CEncoder Z7_final:
+  public CBaseCoder,
+  public ICompressWriteCoderProperties,
+  // public ICryptoResetSalt,
+  public ICryptoResetInitVector
+{
+  Z7_COM_UNKNOWN_IMP_4(
+      ICompressFilter,
+      ICryptoSetPassword,
+      ICompressWriteCoderProperties,
+      // ICryptoResetSalt,
+      ICryptoResetInitVector)
+  Z7_IFACE_COM7_IMP(ICompressWriteCoderProperties)
+  // Z7_IFACE_COM7_IMP(ICryptoResetSalt)
+  Z7_IFACE_COM7_IMP(ICryptoResetInitVector)
+public:
+  CEncoder();
+};
+
+#endif
+
+class CDecoder Z7_final:
+  public CBaseCoder,
+  public ICompressSetDecoderProperties2
+{
+  Z7_COM_UNKNOWN_IMP_3(
+      ICompressFilter,
+      ICryptoSetPassword,
+      ICompressSetDecoderProperties2)
+  Z7_IFACE_COM7_IMP(ICompressSetDecoderProperties2)
+public:
+  CDecoder();
+};
+
+}}
+
+#endif