Password-based decryptor with MAC. More...
#include <default.h>
Inheritance diagram for DataDecryptorWithMAC< BC, H, MAC, Info >:
Public Member Functions | |
| DataDecryptorWithMAC (const char *passphrase, BufferedTransformation *attachment=NULL, bool throwException=true) | |
| Constructs a DataDecryptor. | |
| DataDecryptorWithMAC (const byte *passphrase, size_t passphraseLength, BufferedTransformation *attachment=NULL, bool throwException=true) | |
| Constructs a DataDecryptor. | |
| DataDecryptor< BC, H, Info >::State | CurrentState () const |
| bool | CheckLastMAC () const |
| Public Member Functions inherited from ProxyFilter | |
| ProxyFilter (BufferedTransformation *filter, size_t firstSize, size_t lastSize, BufferedTransformation *attachment) | |
| Construct a ProxyFilter. | |
| bool | IsolatedFlush (bool hardFlush, bool blocking) |
| Flushes data buffered by this object, without signal propagation. | |
| void | SetFilter (Filter *filter) |
| Sets the OutputProxy filter. | |
| void | NextPutMultiple (const byte *s, size_t len) |
| void | NextPutModifiable (byte *inString, size_t length) |
| Public Member Functions inherited from FilterWithBufferedInput | |
| FilterWithBufferedInput (BufferedTransformation *attachment) | |
| Construct a FilterWithBufferedInput with an attached transformation. | |
| FilterWithBufferedInput (size_t firstSize, size_t blockSize, size_t lastSize, BufferedTransformation *attachment) | |
| Construct a FilterWithBufferedInput with an attached transformation. | |
| void | IsolatedInitialize (const NameValuePairs ¶meters) |
| Initialize or reinitialize this object, without signal propagation. | |
| size_t | Put2 (const byte *inString, size_t length, int messageEnd, bool blocking) |
| Input multiple bytes for processing. | |
| size_t | PutModifiable2 (byte *inString, size_t length, int messageEnd, bool blocking) |
| Input multiple bytes that may be modified by callee. | |
| void | ForceNextPut () |
| Flushes data buffered by this object. | |
| Public Member Functions inherited from Filter | |
| Filter (BufferedTransformation *attachment=NULL) | |
| Construct a Filter. | |
| bool | Attachable () |
| Determine if attachable. | |
| BufferedTransformation * | AttachedTransformation () |
| Retrieve attached transformation. | |
| const BufferedTransformation * | AttachedTransformation () const |
| Retrieve attached transformation. | |
| void | Detach (BufferedTransformation *newAttachment=NULL) |
| Replace an attached transformation. | |
| size_t | TransferTo2 (BufferedTransformation &target, lword &transferBytes, const std::string &channel=DEFAULT_CHANNEL, bool blocking=true) |
| Transfer bytes from this object to another BufferedTransformation. | |
| size_t | CopyRangeTo2 (BufferedTransformation &target, lword &begin, lword end=LWORD_MAX, const std::string &channel=DEFAULT_CHANNEL, bool blocking=true) const |
| Copy bytes from this object to another BufferedTransformation. | |
| void | Initialize (const NameValuePairs ¶meters=g_nullNameValuePairs, int propagation=-1) |
| Initialize or reinitialize this object, with signal propagation. | |
| bool | Flush (bool hardFlush, int propagation=-1, bool blocking=true) |
| Flush buffered input and/or output, with signal propagation. | |
| bool | MessageSeriesEnd (int propagation=-1, bool blocking=true) |
| Marks the end of a series of messages, with signal propagation. | |
| Public Member Functions inherited from BufferedTransformation | |
| BufferedTransformation () | |
| Construct a BufferedTransformation. | |
| BufferedTransformation & | Ref () |
| Provides a reference to this object. | |
| virtual void | Attach (BufferedTransformation *newAttachment) |
| Add newAttachment to the end of attachment chain. | |
| size_t | Put (byte inByte, bool blocking=true) |
| Input a byte for processing. | |
| size_t | Put (const byte *inString, size_t length, bool blocking=true) |
| Input a byte buffer for processing. | |
| size_t | PutWord16 (word16 value, ByteOrder order=BIG_ENDIAN_ORDER, bool blocking=true) |
| Input a 16-bit word for processing. | |
| size_t | PutWord32 (word32 value, ByteOrder order=BIG_ENDIAN_ORDER, bool blocking=true) |
| Input a 32-bit word for processing. | |
| size_t | PutWord64 (word64 value, ByteOrder order=BIG_ENDIAN_ORDER, bool blocking=true) |
| Input a 64-bit word for processing. | |
| virtual byte * | CreatePutSpace (size_t &size) |
| Request space which can be written into by the caller. | |
| virtual bool | CanModifyInput () const |
| Determines whether input can be modified by the callee. | |
| size_t | PutModifiable (byte *inString, size_t length, bool blocking=true) |
| Input multiple bytes that may be modified by callee. | |
| bool | MessageEnd (int propagation=-1, bool blocking=true) |
| Signals the end of messages to the object. | |
| size_t | PutMessageEnd (const byte *inString, size_t length, int propagation=-1, bool blocking=true) |
| Input multiple bytes for processing and signal the end of a message. | |
| unsigned int | GetMaxWaitObjectCount () const |
| Retrieves the maximum number of waitable objects. | |
| void | GetWaitObjects (WaitObjectContainer &container, CallStack const &callStack) |
| Retrieves waitable objects. | |
| virtual bool | IsolatedMessageSeriesEnd (bool blocking) |
| Marks the end of a series of messages, without signal propagation. | |
| virtual void | SetAutoSignalPropagation (int propagation) |
| Set propagation of automatically generated and transferred signals. | |
| virtual int | GetAutoSignalPropagation () const |
| Retrieve automatic signal propagation value. | |
| virtual lword | MaxRetrievable () const |
| Provides the number of bytes ready for retrieval. | |
| virtual bool | AnyRetrievable () const |
| Determines whether bytes are ready for retrieval. | |
| virtual size_t | Get (byte &outByte) |
| Retrieve a 8-bit byte. | |
| virtual size_t | Get (byte *outString, size_t getMax) |
| Retrieve a block of bytes. | |
| virtual size_t | Peek (byte &outByte) const |
| Peek a 8-bit byte. | |
| virtual size_t | Peek (byte *outString, size_t peekMax) const |
| Peek a block of bytes. | |
| size_t | GetWord16 (word16 &value, ByteOrder order=BIG_ENDIAN_ORDER) |
| Retrieve a 16-bit word. | |
| size_t | GetWord32 (word32 &value, ByteOrder order=BIG_ENDIAN_ORDER) |
| Retrieve a 32-bit word. | |
| size_t | GetWord64 (word64 &value, ByteOrder order=BIG_ENDIAN_ORDER) |
| Retrieve a 64-bit word. | |
| size_t | PeekWord16 (word16 &value, ByteOrder order=BIG_ENDIAN_ORDER) const |
| Peek a 16-bit word. | |
| size_t | PeekWord32 (word32 &value, ByteOrder order=BIG_ENDIAN_ORDER) const |
| Peek a 32-bit word. | |
| size_t | PeekWord64 (word64 &value, ByteOrder order=BIG_ENDIAN_ORDER) const |
| Peek a 64-bit word. | |
| lword | TransferTo (BufferedTransformation &target, lword transferMax=LWORD_MAX, const std::string &channel=DEFAULT_CHANNEL) |
| move transferMax bytes of the buffered output to target as input | |
| virtual lword | Skip (lword skipMax=LWORD_MAX) |
| Discard skipMax bytes from the output buffer. | |
| lword | CopyTo (BufferedTransformation &target, lword copyMax=LWORD_MAX, const std::string &channel=DEFAULT_CHANNEL) const |
| Copy bytes from this object to another BufferedTransformation. | |
| lword | CopyRangeTo (BufferedTransformation &target, lword position, lword copyMax=LWORD_MAX, const std::string &channel=DEFAULT_CHANNEL) const |
| Copy bytes from this object using an index to another BufferedTransformation. | |
| virtual lword | TotalBytesRetrievable () const |
| Provides the number of bytes ready for retrieval. | |
| virtual unsigned int | NumberOfMessages () const |
| Provides the number of meesages processed by this object. | |
| virtual bool | AnyMessages () const |
| Determines if any messages are available for retrieval. | |
| virtual bool | GetNextMessage () |
| Start retrieving the next message. | |
| virtual unsigned int | SkipMessages (unsigned int count=UINT_MAX) |
| Skip a number of meessages. | |
| unsigned int | TransferMessagesTo (BufferedTransformation &target, unsigned int count=UINT_MAX, const std::string &channel=DEFAULT_CHANNEL) |
| Transfer messages from this object to another BufferedTransformation. | |
| unsigned int | CopyMessagesTo (BufferedTransformation &target, unsigned int count=UINT_MAX, const std::string &channel=DEFAULT_CHANNEL) const |
| Copy messages from this object to another BufferedTransformation. | |
| virtual void | SkipAll () |
| Skip all messages in the series. | |
| void | TransferAllTo (BufferedTransformation &target, const std::string &channel=DEFAULT_CHANNEL) |
| Transfer all bytes from this object to another BufferedTransformation. | |
| void | CopyAllTo (BufferedTransformation &target, const std::string &channel=DEFAULT_CHANNEL) const |
| Copy messages from this object to another BufferedTransformation. | |
| virtual bool | GetNextMessageSeries () |
| Retrieve the next message in a series. | |
| virtual unsigned int | NumberOfMessagesInThisSeries () const |
| Provides the number of messages in a series. | |
| virtual unsigned int | NumberOfMessageSeries () const |
| Provides the number of messages in a series. | |
| size_t | TransferMessagesTo2 (BufferedTransformation &target, unsigned int &messageCount, const std::string &channel=DEFAULT_CHANNEL, bool blocking=true) |
| Transfer messages from this object to another BufferedTransformation. | |
| size_t | TransferAllTo2 (BufferedTransformation &target, const std::string &channel=DEFAULT_CHANNEL, bool blocking=true) |
| Transfer all bytes from this object to another BufferedTransformation. | |
| size_t | ChannelPut (const std::string &channel, byte inByte, bool blocking=true) |
| Input a byte for processing on a channel. | |
| size_t | ChannelPut (const std::string &channel, const byte *inString, size_t length, bool blocking=true) |
| Input a byte buffer for processing on a channel. | |
| size_t | ChannelPutModifiable (const std::string &channel, byte *inString, size_t length, bool blocking=true) |
| Input multiple bytes that may be modified by callee on a channel. | |
| size_t | ChannelPutWord16 (const std::string &channel, word16 value, ByteOrder order=BIG_ENDIAN_ORDER, bool blocking=true) |
| Input a 16-bit word for processing on a channel. | |
| size_t | ChannelPutWord32 (const std::string &channel, word32 value, ByteOrder order=BIG_ENDIAN_ORDER, bool blocking=true) |
| Input a 32-bit word for processing on a channel. | |
| size_t | ChannelPutWord64 (const std::string &channel, word64 value, ByteOrder order=BIG_ENDIAN_ORDER, bool blocking=true) |
| Input a 64-bit word for processing on a channel. | |
| bool | ChannelMessageEnd (const std::string &channel, int propagation=-1, bool blocking=true) |
| Signal the end of a message. | |
| size_t | ChannelPutMessageEnd (const std::string &channel, const byte *inString, size_t length, int propagation=-1, bool blocking=true) |
| Input multiple bytes for processing and signal the end of a message. | |
| virtual byte * | ChannelCreatePutSpace (const std::string &channel, size_t &size) |
| Request space which can be written into by the caller. | |
| virtual size_t | ChannelPut2 (const std::string &channel, const byte *inString, size_t length, int messageEnd, bool blocking) |
| Input multiple bytes for processing on a channel. | |
| virtual size_t | ChannelPutModifiable2 (const std::string &channel, byte *inString, size_t length, int messageEnd, bool blocking) |
| Input multiple bytes that may be modified by callee on a channel. | |
| virtual bool | ChannelFlush (const std::string &channel, bool hardFlush, int propagation=-1, bool blocking=true) |
| Flush buffered input and/or output on a channel. | |
| virtual bool | ChannelMessageSeriesEnd (const std::string &channel, int propagation=-1, bool blocking=true) |
| Marks the end of a series of messages on a channel. | |
| virtual void | SetRetrievalChannel (const std::string &channel) |
| Sets the default retrieval channel. | |
| Public Member Functions inherited from Algorithm | |
| Algorithm (bool checkSelfTestStatus=true) | |
| Interface for all crypto algorithms. | |
| virtual std::string | AlgorithmName () const |
| Provides the name of this algorithm. | |
| virtual std::string | AlgorithmProvider () const |
| Retrieve the provider of this algorithm. | |
| Public Member Functions inherited from Clonable | |
| virtual Clonable * | Clone () const |
| Copies this object. | |
| Public Member Functions inherited from Waitable | |
| bool | Wait (unsigned long milliseconds, CallStack const &callStack) |
| Wait on this object. | |
Static Public Attributes | |
| static const int | BLOCKSIZE = Info::BLOCKSIZE |
| static const int | KEYLENGTH = Info::KEYLENGTH |
| static const int | SALTLENGTH = Info::SALTLENGTH |
| static const int | DIGESTSIZE = Info::DIGESTSIZE |
| static const int | ITERATIONS = Info::ITERATIONS |
Detailed Description
template<class BC, class H, class MAC, class Info>
class DataDecryptorWithMAC< BC, H, MAC, Info >
class DataDecryptorWithMAC< BC, H, MAC, Info >
Password-based decryptor with MAC.
- Template Parameters
-
BC BlockCipher based class used for encryption H HashTransformation based class used for mashing MAC HashTransformation based class used for authentication Info Constants used by the algorithms
DataDecryptorWithMAC uses a non-standard mashup function called Mash() to derive key bits from the password.
The purpose of the function Mash() is to take an arbitrary length input string and *deterministically* produce an arbitrary length output string such that (1) it looks random, (2) no information about the input is deducible from it, and (3) it contains as much entropy as it can hold, or the amount of entropy in the input string, whichever is smaller.
Crypto++ 5.6.5 and earlier used the legacy algorithms, including DES_EDE2 and SHA1. Crypto++ 5.7 switched to AES and SHA256.
- See also
- DefaultEncryptorWithMAC, DefaultDecryptorWithMAC, LegacyDecryptorWithMAC, LegacyEncryptorWithMAC
- Since
- Crypto++ 2.0
Constructor & Destructor Documentation
◆ DataDecryptorWithMAC() [1/2]
template<class BC , class H , class MAC , class Info >
| DataDecryptorWithMAC< BC, H, MAC, Info >::DataDecryptorWithMAC | ( | const char * | passphrase, |
| BufferedTransformation * | attachment = NULL, | ||
| bool | throwException = true ) |
Constructs a DataDecryptor.
- Parameters
-
passphrase a C-String password attachment a BufferedTransformation to attach to this object throwException a flag specifying whether an Exception should be thrown on error
Definition at line 257 of file default.cpp.
◆ DataDecryptorWithMAC() [2/2]
template<class BC , class H , class MAC , class Info >
| DataDecryptorWithMAC< BC, H, MAC, Info >::DataDecryptorWithMAC | ( | const byte * | passphrase, |
| size_t | passphraseLength, | ||
| BufferedTransformation * | attachment = NULL, | ||
| bool | throwException = true ) |
Constructs a DataDecryptor.
- Parameters
-
passphrase a byte string password passphraseLength the length of the byte string password attachment a BufferedTransformation to attach to this object throwException a flag specifying whether an Exception should be thrown on error
Definition at line 266 of file default.cpp.
Member Function Documentation
◆ CurrentState()
template<class BC , class H , class MAC , class Info >
| DataDecryptor< BC, H, Info >::State DataDecryptorWithMAC< BC, H, MAC, Info >::CurrentState | ( | ) | const |
Definition at line 275 of file default.cpp.
◆ CheckLastMAC()
template<class BC , class H , class MAC , class Info >
| bool DataDecryptorWithMAC< BC, H, MAC, Info >::CheckLastMAC | ( | ) | const |
Definition at line 281 of file default.cpp.
Member Data Documentation
◆ BLOCKSIZE
template<class BC , class H , class MAC , class Info >
|
static |
◆ KEYLENGTH
template<class BC , class H , class MAC , class Info >
|
static |
◆ SALTLENGTH
template<class BC , class H , class MAC , class Info >
|
static |
◆ DIGESTSIZE
template<class BC , class H , class MAC , class Info >
|
static |
◆ ITERATIONS
template<class BC , class H , class MAC , class Info >
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static |
The documentation for this class was generated from the following files:
