#include <vmac.h>
Inheritance diagram for VMAC_Base:
Definition at line 20 of file vmac.h.
Public Types | |
| typedef word64 | HashWordType |
| enum | IV_Requirement { UNIQUE_IV = 0, RANDOM_IV, UNPREDICTABLE_RANDOM_IV, INTERNALLY_GENERATED_IV, NOT_RESYNCHRONIZABLE } |
Public Member Functions | |
| std::string | AlgorithmName () const |
| returns name of this algorithm, not universally implemented yet | |
| unsigned int | IVSize () const |
| returns size of IVs used by this object | |
| void | Resynchronize (const byte *IV) |
| resynchronize with an IV | |
| void | GetNextIV (RandomNumberGenerator &rng, byte *IV) |
| get a secure IV for the next message | |
| unsigned int | DigestSize () const |
| size of the hash returned by Final() | |
| void | UncheckedSetKey (const byte *userKey, unsigned int keylength, const NameValuePairs ¶ms) |
| void | TruncatedFinal (byte *mac, size_t size) |
| truncated version of Final() | |
| unsigned int | BlockSize () const |
| block size of underlying compression function, or 0 if not block based | |
| ByteOrder | GetByteOrder () const |
| unsigned int | OptimalBlockSize () const |
| input to Update() should have length a multiple of this for optimal speed | |
| unsigned int | OptimalDataAlignment () const |
| returns how input should be aligned for optimal performance | |
| void | Update (const byte *input, size_t length) |
| process more input | |
| byte * | CreateUpdateSpace (size_t &size) |
| request space to write input into | |
| void | Restart () |
| discard the current state, and restart with a new message | |
| HashTransformation & | Ref () |
| return a reference to this object, | |
| virtual void | Final (byte *digest) |
| compute hash for current message, then restart for a new message | |
| virtual void | CalculateDigest (byte *digest, const byte *input, size_t length) |
| use this if your input is in one piece and you don't want to call Update() and Final() separately | |
| virtual bool | Verify (const byte *digest) |
| verify that digest is a valid digest for the current message, then reinitialize the object | |
| virtual bool | VerifyDigest (const byte *digest, const byte *input, size_t length) |
| use this if your input is in one piece and you don't want to call Update() and Verify() separately | |
| virtual void | CalculateTruncatedDigest (byte *digest, size_t digestSize, const byte *input, size_t length) |
| truncated version of CalculateDigest() | |
| virtual bool | TruncatedVerify (const byte *digest, size_t digestLength) |
| truncated version of Verify() | |
| virtual bool | VerifyTruncatedDigest (const byte *digest, size_t digestLength, const byte *input, size_t length) |
| truncated version of VerifyDigest() | |
| virtual Clonable * | Clone () const |
| this is not implemented by most classes yet | |
| virtual size_t | MinKeyLength () const=0 |
| returns smallest valid key length in bytes */ | |
| virtual size_t | MaxKeyLength () const=0 |
| returns largest valid key length in bytes */ | |
| virtual size_t | DefaultKeyLength () const=0 |
| returns default (recommended) key length in bytes */ | |
| virtual size_t | GetValidKeyLength (size_t n) const=0 |
| returns the smallest valid key length in bytes that is >= min(n, GetMaxKeyLength()) | |
| virtual bool | IsValidKeyLength (size_t n) const |
| returns whether n is a valid key length | |
| virtual void | SetKey (const byte *key, size_t length, const NameValuePairs ¶ms=g_nullNameValuePairs) |
| set or reset the key of this object | |
| void | SetKeyWithRounds (const byte *key, size_t length, int rounds) |
| calls SetKey() with an NameValuePairs object that just specifies "Rounds" | |
| void | SetKeyWithIV (const byte *key, size_t length, const byte *iv) |
| calls SetKey() with an NameValuePairs object that just specifies "IV" | |
| virtual IV_Requirement | IVRequirement () const=0 |
| returns the minimal requirement for secure IVs | |
| bool | IsResynchronizable () const |
| returns whether this object can be resynchronized (i.e. supports initialization vectors) | |
| bool | CanUseRandomIVs () const |
| returns whether this object can use random IVs (in addition to ones returned by GetNextIV) | |
| bool | CanUsePredictableIVs () const |
| returns whether this object can use random but possibly predictable IVs (in addition to ones returned by GetNextIV) | |
| bool | CanUseStructuredIVs () const |
| returns whether this object can use structured IVs, for example a counter (in addition to ones returned by GetNextIV) | |
Protected Member Functions | |
| virtual BlockCipher & | AccessCipher ()=0 |
| virtual int | DefaultDigestSize () const=0 |
| const BlockCipher & | GetCipher () const |
| void | HashEndianCorrectedBlock (const word64 *data) |
| size_t | HashMultipleBlocks (const word64 *input, size_t length) |
| void | Init () |
| word64 * | StateBuf () |
| word64 * | DataBuf () |
| void | VHASH_Update_SSE2 (const word64 *data, size_t blocksRemainingInWord64, int tagPart) |
| template<bool T_128BitTag> | |
| void | VHASH_Update_Template (const word64 *data, size_t blockRemainingInWord128) |
| void | VHASH_Update (const word64 *data, size_t blocksRemainingInWord128) |
| word64 * | m_polyState () |
| size_t | SS1 () |
| size_t | m_polyStateSize () |
| word64 * | m_nhKey () |
| size_t | SS2 () |
| size_t | m_nhKeySize () |
| byte * | m_data () |
| size_t | SS3 () |
| size_t | m_dataSize () |
| word64 * | m_l3Key () |
| size_t | SS4 () |
| size_t | m_l3KeySize () |
| byte * | m_nonce () |
| size_t | SS5 () |
| size_t | m_nonceSize () |
| byte * | m_pad () |
| size_t | SS6 () |
| size_t | m_padSize () |
| size_t | SST () |
| void | AllocateBlocks () |
| word64 | GetBitCountHi () const |
| word64 | GetBitCountLo () const |
| void | PadLastBlock (unsigned int lastBlockSize, byte padFirst=0x80) |
| void | HashBlock (const HashWordType *input) |
| void | ThrowIfInvalidTruncatedSize (size_t size) const |
| virtual const Algorithm & | GetAlgorithm () const=0 |
| void | ThrowIfInvalidKeyLength (size_t length) |
| void | ThrowIfResynchronizable () |
| void | ThrowIfInvalidIV (const byte *iv) |
| const byte * | GetIVAndThrowIfInvalid (const NameValuePairs ¶ms) |
| void | AssertValidKeyLength (size_t length) const |
Protected Attributes | |
| AlignedSecByteBlock | m_aggregate |
| bool | m_is128 |
| bool | m_padCached |
| bool | m_isFirstBlock |
| int | m_L1KeyLength |
enum SimpleKeyingInterface::IV_Requirement [inherited] |
| UNIQUE_IV | |
| RANDOM_IV | |
| UNPREDICTABLE_RANDOM_IV | |
| INTERNALLY_GENERATED_IV | |
| NOT_RESYNCHRONIZABLE |
Definition at line 382 of file cryptlib.h.
| void VMAC_Base::GetNextIV | ( | RandomNumberGenerator & | rng, | |
| byte * | IV | |||
| ) | [virtual] |
get a secure IV for the next message
This method should be called after you finish encrypting one message and are ready to start the next one. After calling it, you must call SetKey() or Resynchronize() before using this object again. This method is not implemented on decryption objects.
Reimplemented from SimpleKeyingInterface.
Definition at line 90 of file vmac.cpp.
References SimpleKeyingInterface::GetNextIV().
| HashTransformation& HashTransformation::Ref | ( | ) | [inline, inherited] |
return a reference to this object,
This function is useful for passing a temporary HashTransformation object to a function that takes a non-const reference.
Definition at line 533 of file cryptlib.h.
| virtual void HashTransformation::Final | ( | byte * | digest | ) | [inline, virtual, inherited] |
compute hash for current message, then restart for a new message
Definition at line 543 of file cryptlib.h.
Referenced by PSSR_MEM_Base::ComputeMessageRepresentative(), PKCS1v15_SignatureMessageEncodingMethod::ComputeMessageRepresentative(), EMSA5Pad< T >::ComputeMessageRepresentative(), PKCS5_PBKDF2_HMAC< T >::DeriveKey(), DefaultEncryptor::FirstPut(), RandomPool::IncorporateEntropy(), PSSR_MEM_Base::RecoverMessageFromRepresentative(), HMAC_Base::TruncatedFinal(), ZlibCompressor::WritePoststreamTail(), and Gzip::WritePoststreamTail().
| virtual bool HashTransformation::Verify | ( | const byte * | digest | ) | [inline, virtual, inherited] |
verify that digest is a valid digest for the current message, then reinitialize the object
Default implementation is to call Final() and do a bitwise comparison between its output and digest.
Definition at line 569 of file cryptlib.h.
Referenced by HashVerificationFilter::LastPut(), Gunzip::ProcessPoststreamTail(), and PSSR_MEM_Base::RecoverMessageFromRepresentative().
| void SimpleKeyingInterface::SetKey | ( | const byte * | key, | |
| size_t | length, | |||
| const NameValuePairs & | params = g_nullNameValuePairs | |||
| ) | [virtual, inherited] |
set or reset the key of this object
| params | is used to specify Rounds, BlockSize, etc |
Reimplemented in ECB_OneWay.
Definition at line 52 of file cryptlib.cpp.
References SimpleKeyingInterface::ThrowIfInvalidKeyLength().
Referenced by CBC_MAC< T >::CBC_MAC(), CipherModeFinalTemplate_CipherHolder< CIPHER, BASE >::CipherModeFinalTemplate_CipherHolder(), DMAC< T >::DMAC(), HMAC< T >::HMAC(), Weak::PanamaMAC< B >::PanamaMAC(), ECB_OneWay::SetKey(), SimpleKeyingInterface::SetKeyWithIV(), SimpleKeyingInterface::SetKeyWithRounds(), UncheckedSetKey(), and BlockOrientedCipherModeBase::UncheckedSetKey().
| bool SimpleKeyingInterface::IsResynchronizable | ( | ) | const [inline, inherited] |
returns whether this object can be resynchronized (i.e. supports initialization vectors)
If this function returns true, and no IV is passed to SetKey() and CanUseStructuredIVs()==true, an IV of all 0's will be assumed.
Definition at line 388 of file cryptlib.h.
Referenced by SimpleKeyingInterface::ThrowIfInvalidIV(), SimpleKeyingInterface::ThrowIfResynchronizable(), and BlockOrientedCipherModeBase::UncheckedSetKey().
1.5.2