Security Scol plugin
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DMAC message authentication code base class. More...
#include <dmac.h>
Public Member Functions | |
CRYPTOPP_CONSTANT (DIGESTSIZE=T::BLOCKSIZE) | |
void | UncheckedSetKey (const byte *key, unsigned int length, const NameValuePairs ¶ms) |
Sets the key for this object without performing parameter validation. | |
void | Update (const byte *input, size_t length) |
Updates a hash with additional input. | |
void | TruncatedFinal (byte *mac, size_t size) |
Computes the hash of the current message. | |
unsigned int | DigestSize () const |
std::string | AlgorithmProvider () const |
Retrieve the provider of this algorithm. | |
Public Member Functions inherited from SameKeyLengthAs< T, IV_REQ, IV_L > | |
CRYPTOPP_CONSTANT (MIN_KEYLENGTH=T::MIN_KEYLENGTH) | |
The minimum key length used by the algorithm provided as a constant. | |
CRYPTOPP_CONSTANT (MAX_KEYLENGTH=T::MAX_KEYLENGTH) | |
The maximum key length used by the algorithm provided as a constant. | |
CRYPTOPP_CONSTANT (DEFAULT_KEYLENGTH=T::DEFAULT_KEYLENGTH) | |
The default key length used by the algorithm provided as a constant. | |
CRYPTOPP_CONSTANT (IV_REQUIREMENT=IV_REQ) | |
The default IV requirements for the algorithm provided as a constant. | |
CRYPTOPP_CONSTANT (IV_LENGTH=IV_L) | |
The default initialization vector length for the algorithm provided as a constant. | |
CRYPTOPP_STATIC_CONSTEXPR size_t CRYPTOPP_API | StaticGetValidKeyLength (size_t keylength) |
Provides a valid key length for the algorithm provided by a static function. | |
Public Member Functions inherited from SimpleKeyingInterface | |
virtual size_t | MinKeyLength () const =0 |
Returns smallest valid key length. | |
virtual size_t | MaxKeyLength () const =0 |
Returns largest valid key length. | |
virtual size_t | DefaultKeyLength () const =0 |
Returns default key length. | |
virtual size_t | GetValidKeyLength (size_t keylength) const =0 |
Returns a valid key length for the algorithm. | |
virtual bool | IsValidKeyLength (size_t keylength) const |
Returns whether keylength is a valid key length. | |
virtual void | SetKey (const byte *key, size_t length, const NameValuePairs ¶ms=g_nullNameValuePairs) |
Sets or reset the key of this object. | |
void | SetKeyWithRounds (const byte *key, size_t length, int rounds) |
Sets or reset the key of this object. | |
void | SetKeyWithIV (const byte *key, size_t length, const byte *iv, size_t ivLength) |
Sets or reset the key of this object. | |
void | SetKeyWithIV (const byte *key, size_t length, const byte *iv) |
Sets or reset the key of this object. | |
virtual IV_Requirement | IVRequirement () const =0 |
Minimal requirement for secure IVs. | |
bool | IsResynchronizable () const |
Determines if the object can be resynchronized. | |
bool | CanUseRandomIVs () const |
Determines if the object can use random IVs. | |
bool | CanUsePredictableIVs () const |
Determines if the object can use random but possibly predictable IVs. | |
bool | CanUseStructuredIVs () const |
Determines if the object can use structured IVs. | |
virtual unsigned int | IVSize () const |
Returns length of the IV accepted by this object. | |
unsigned int | DefaultIVLength () const |
Provides the default size of an IV. | |
virtual unsigned int | MinIVLength () const |
Provides the minimum size of an IV. | |
virtual unsigned int | MaxIVLength () const |
Provides the maximum size of an IV. | |
virtual void | Resynchronize (const byte *iv, int ivLength=-1) |
Resynchronize with an IV. | |
virtual void | GetNextIV (RandomNumberGenerator &rng, byte *iv) |
Retrieves a secure IV for the next message. | |
Public Member Functions inherited from HashTransformation | |
HashTransformation & | Ref () |
Provides a reference to this object. | |
virtual byte * | CreateUpdateSpace (size_t &size) |
Request space which can be written into by the caller. | |
virtual void | Final (byte *digest) |
Computes the hash of the current message. | |
virtual void | Restart () |
Restart the hash. | |
unsigned int | TagSize () const |
virtual unsigned int | BlockSize () const |
Provides the block size of the compression function. | |
virtual unsigned int | OptimalBlockSize () const |
Provides the input block size most efficient for this hash. | |
virtual unsigned int | OptimalDataAlignment () const |
Provides input and output data alignment for optimal performance. | |
virtual void | CalculateDigest (byte *digest, const byte *input, size_t length) |
Updates the hash with additional input and computes the hash of the current message. | |
virtual bool | Verify (const byte *digest) |
Verifies the hash of the current message. | |
virtual bool | VerifyDigest (const byte *digest, const byte *input, size_t length) |
Updates the hash with additional input and verifies the hash of the current message. | |
virtual void | CalculateTruncatedDigest (byte *digest, size_t digestSize, const byte *input, size_t length) |
Updates the hash with additional input and computes the hash of the current message. | |
virtual bool | TruncatedVerify (const byte *digest, size_t digestLength) |
Verifies the hash of the current message. | |
virtual bool | VerifyTruncatedDigest (const byte *digest, size_t digestLength, const byte *input, size_t length) |
Updates the hash with additional input and verifies the hash of the current message. | |
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. | |
Public Member Functions inherited from Clonable | |
virtual Clonable * | Clone () const |
Copies this object. | |
Static Public Member Functions | |
static std::string | StaticAlgorithmName () |
Additional Inherited Members | |
Public Types inherited from SimpleKeyingInterface | |
enum | IV_Requirement { UNIQUE_IV = 0 , RANDOM_IV , UNPREDICTABLE_RANDOM_IV , INTERNALLY_GENERATED_IV , NOT_RESYNCHRONIZABLE } |
Secure IVs requirements as enumerated values. More... | |
Protected Member Functions inherited from SimpleKeyingInterface | |
void | ThrowIfInvalidKeyLength (size_t length) |
Validates the key length. | |
void | ThrowIfResynchronizable () |
Validates the object. | |
void | ThrowIfInvalidIV (const byte *iv) |
Validates the IV. | |
size_t | ThrowIfInvalidIVLength (int length) |
Validates the IV length. | |
const byte * | GetIVAndThrowIfInvalid (const NameValuePairs ¶ms, size_t &size) |
Retrieves and validates the IV. | |
void | AssertValidKeyLength (size_t length) const |
Validates the key length. | |
Protected Member Functions inherited from HashTransformation | |
void | ThrowIfInvalidTruncatedSize (size_t size) const |
Validates a truncated digest size. | |
DMAC message authentication code base class.
T | class derived from BlockCipherDocumentation |
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inline |
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virtual |
Retrieve the provider of this algorithm.
The algorithm provider can be a name like "C++", "SSE", "NEON", "AESNI", "ARMv8" and "Power8". C++ is standard C++ code. Other labels, like SSE, usually indicate a specialized implementation using instructions from a higher instruction set architecture (ISA). Future labels may include external hardware like a hardware security module (HSM).
Generally speaking Wei Dai's original IA-32 ASM code falls under "SSE2". Labels like "SSSE3" and "SSE4.1" follow after Wei's code and use intrinsics instead of ASM.
Algorithms which combine different instructions or ISAs provide the dominant one. For example on x86 AES/GCM
returns "AESNI" rather than "CLMUL" or "AES+SSE4.1" or "AES+CLMUL" or "AES+SSE4.1+CLMUL".
Reimplemented from Algorithm.
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inlinevirtual |
Provides the digest size of the hash
Implements HashTransformation.
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inlinestatic |
Computes the hash of the current message.
digest | a pointer to the buffer to receive the hash |
digestSize | the size of the truncated digest, in bytes |
TruncatedFinal() calls Final() and then copies digestSize bytes to digest. The hash is restarted the hash for the next message.
COUNTOF(digest) <= DigestSize()
or COUNTOF(digest) <= HASH::DIGESTSIZE
ensures the output byte buffer is a valid size. Implements HashTransformation.
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virtual |
Sets the key for this object without performing parameter validation.
key | a byte buffer used to key the cipher |
length | the length of the byte buffer |
params | additional parameters passed as NameValuePairs |
key must be at least DEFAULT_KEYLENGTH in length.
Implements SimpleKeyingInterface.
Updates a hash with additional input.
input | the additional input as a buffer |
length | the size of the buffer, in bytes |
Implements HashTransformation.