diff options
Diffstat (limited to 'plugins/CryptoPP/crypto/default.h')
| -rw-r--r-- | plugins/CryptoPP/crypto/default.h | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/plugins/CryptoPP/crypto/default.h b/plugins/CryptoPP/crypto/default.h new file mode 100644 index 0000000000..fd3eb48c2d --- /dev/null +++ b/plugins/CryptoPP/crypto/default.h @@ -0,0 +1,104 @@ +#ifndef CRYPTOPP_DEFAULT_H
+#define CRYPTOPP_DEFAULT_H
+
+#include "sha.h"
+#include "hmac.h"
+#include "des.h"
+#include "filters.h"
+#include "modes.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+typedef DES_EDE2 Default_BlockCipher;
+typedef SHA DefaultHashModule;
+typedef HMAC<DefaultHashModule> DefaultMAC;
+
+//! Password-Based Encryptor using DES-EDE2
+class DefaultEncryptor : public ProxyFilter
+{
+public:
+ DefaultEncryptor(const char *passphrase, BufferedTransformation *attachment = NULL);
+ DefaultEncryptor(const byte *passphrase, size_t passphraseLength, BufferedTransformation *attachment = NULL);
+
+protected:
+ void FirstPut(const byte *);
+ void LastPut(const byte *inString, size_t length);
+
+private:
+ SecByteBlock m_passphrase;
+ CBC_Mode<Default_BlockCipher>::Encryption m_cipher;
+};
+
+//! Password-Based Decryptor using DES-EDE2
+class DefaultDecryptor : public ProxyFilter
+{
+public:
+ DefaultDecryptor(const char *passphrase, BufferedTransformation *attachment = NULL, bool throwException=true);
+ DefaultDecryptor(const byte *passphrase, size_t passphraseLength, BufferedTransformation *attachment = NULL, bool throwException=true);
+
+ class Err : public Exception
+ {
+ public:
+ Err(const std::string &s)
+ : Exception(DATA_INTEGRITY_CHECK_FAILED, s) {}
+ };
+ class KeyBadErr : public Err {public: KeyBadErr() : Err("DefaultDecryptor: cannot decrypt message with this passphrase") {}};
+
+ enum State {WAITING_FOR_KEYCHECK, KEY_GOOD, KEY_BAD};
+ State CurrentState() const {return m_state;}
+
+protected:
+ void FirstPut(const byte *inString);
+ void LastPut(const byte *inString, size_t length);
+
+ State m_state;
+
+private:
+ void CheckKey(const byte *salt, const byte *keyCheck);
+
+ SecByteBlock m_passphrase;
+ CBC_Mode<Default_BlockCipher>::Decryption m_cipher;
+ member_ptr<FilterWithBufferedInput> m_decryptor;
+ bool m_throwException;
+};
+
+//! Password-Based Encryptor using DES-EDE2 and HMAC/SHA-1
+class DefaultEncryptorWithMAC : public ProxyFilter
+{
+public:
+ DefaultEncryptorWithMAC(const char *passphrase, BufferedTransformation *attachment = NULL);
+ DefaultEncryptorWithMAC(const byte *passphrase, size_t passphraseLength, BufferedTransformation *attachment = NULL);
+
+protected:
+ void FirstPut(const byte *inString) {}
+ void LastPut(const byte *inString, size_t length);
+
+private:
+ member_ptr<DefaultMAC> m_mac;
+};
+
+//! Password-Based Decryptor using DES-EDE2 and HMAC/SHA-1
+class DefaultDecryptorWithMAC : public ProxyFilter
+{
+public:
+ class MACBadErr : public DefaultDecryptor::Err {public: MACBadErr() : DefaultDecryptor::Err("DefaultDecryptorWithMAC: MAC check failed") {}};
+
+ DefaultDecryptorWithMAC(const char *passphrase, BufferedTransformation *attachment = NULL, bool throwException=true);
+ DefaultDecryptorWithMAC(const byte *passphrase, size_t passphraseLength, BufferedTransformation *attachment = NULL, bool throwException=true);
+
+ DefaultDecryptor::State CurrentState() const;
+ bool CheckLastMAC() const;
+
+protected:
+ void FirstPut(const byte *inString) {}
+ void LastPut(const byte *inString, size_t length);
+
+private:
+ member_ptr<DefaultMAC> m_mac;
+ HashVerifier *m_hashVerifier;
+ bool m_throwException;
+};
+
+NAMESPACE_END
+
+#endif
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