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104 lines
3.1 KiB
104 lines
3.1 KiB
#ifndef CRYPTOPP_DEFAULT_H |
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#define CRYPTOPP_DEFAULT_H |
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#include "sha.h" |
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#include "hmac.h" |
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#include "des.h" |
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#include "filters.h" |
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#include "modes.h" |
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NAMESPACE_BEGIN(CryptoPP) |
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typedef DES_EDE2 Default_BlockCipher; |
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typedef SHA DefaultHashModule; |
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typedef HMAC<DefaultHashModule> DefaultMAC; |
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//! Password-Based Encryptor using DES-EDE2 |
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class DefaultEncryptor : public ProxyFilter |
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{ |
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public: |
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DefaultEncryptor(const char *passphrase, BufferedTransformation *attachment = NULL); |
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DefaultEncryptor(const byte *passphrase, size_t passphraseLength, BufferedTransformation *attachment = NULL); |
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protected: |
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void FirstPut(const byte *); |
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void LastPut(const byte *inString, size_t length); |
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private: |
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SecByteBlock m_passphrase; |
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CBC_Mode<Default_BlockCipher>::Encryption m_cipher; |
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}; |
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//! Password-Based Decryptor using DES-EDE2 |
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class DefaultDecryptor : public ProxyFilter |
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{ |
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public: |
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DefaultDecryptor(const char *passphrase, BufferedTransformation *attachment = NULL, bool throwException=true); |
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DefaultDecryptor(const byte *passphrase, size_t passphraseLength, BufferedTransformation *attachment = NULL, bool throwException=true); |
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class Err : public Exception |
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{ |
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public: |
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Err(const std::string &s) |
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: Exception(DATA_INTEGRITY_CHECK_FAILED, s) {} |
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}; |
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class KeyBadErr : public Err {public: KeyBadErr() : Err("DefaultDecryptor: cannot decrypt message with this passphrase") {}}; |
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enum State {WAITING_FOR_KEYCHECK, KEY_GOOD, KEY_BAD}; |
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State CurrentState() const {return m_state;} |
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protected: |
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void FirstPut(const byte *inString); |
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void LastPut(const byte *inString, size_t length); |
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State m_state; |
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private: |
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void CheckKey(const byte *salt, const byte *keyCheck); |
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SecByteBlock m_passphrase; |
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CBC_Mode<Default_BlockCipher>::Decryption m_cipher; |
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member_ptr<FilterWithBufferedInput> m_decryptor; |
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bool m_throwException; |
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}; |
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//! Password-Based Encryptor using DES-EDE2 and HMAC/SHA-1 |
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class DefaultEncryptorWithMAC : public ProxyFilter |
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{ |
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public: |
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DefaultEncryptorWithMAC(const char *passphrase, BufferedTransformation *attachment = NULL); |
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DefaultEncryptorWithMAC(const byte *passphrase, size_t passphraseLength, BufferedTransformation *attachment = NULL); |
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protected: |
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void FirstPut(const byte *inString) {} |
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void LastPut(const byte *inString, size_t length); |
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private: |
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member_ptr<DefaultMAC> m_mac; |
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}; |
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//! Password-Based Decryptor using DES-EDE2 and HMAC/SHA-1 |
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class DefaultDecryptorWithMAC : public ProxyFilter |
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{ |
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public: |
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class MACBadErr : public DefaultDecryptor::Err {public: MACBadErr() : DefaultDecryptor::Err("DefaultDecryptorWithMAC: MAC check failed") {}}; |
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DefaultDecryptorWithMAC(const char *passphrase, BufferedTransformation *attachment = NULL, bool throwException=true); |
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DefaultDecryptorWithMAC(const byte *passphrase, size_t passphraseLength, BufferedTransformation *attachment = NULL, bool throwException=true); |
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DefaultDecryptor::State CurrentState() const; |
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bool CheckLastMAC() const; |
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protected: |
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void FirstPut(const byte *inString) {} |
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void LastPut(const byte *inString, size_t length); |
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private: |
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member_ptr<DefaultMAC> m_mac; |
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HashVerifier *m_hashVerifier; |
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bool m_throwException; |
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}; |
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NAMESPACE_END |
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#endif
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