Crypto++
5.6.3
Free C++ class library of cryptographic schemes
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Public Types | |
typedef SCHEME_OPTIONS::PrivateKey | KeyClass |
typedef SCHEME_OPTIONS | SchemeOptions |
Public Member Functions | |
const KeyClass & | GetKey () const |
KeyClass & | AccessKey () |
PublicKey & | AccessPublicKey () |
const PublicKey & | GetPublicKey () const |
PrivateKey & | AccessPrivateKey () |
const PrivateKey & | GetPrivateKey () const |
const KeyClass & | GetTrapdoorFunction () const |
PK_MessageAccumulator * | NewSignatureAccumulator (RandomNumberGenerator &rng) const |
PK_MessageAccumulator * | NewVerificationAccumulator () const |
std::string | AlgorithmName () const |
DecodingResult | Decrypt (RandomNumberGenerator &rng, const byte *ciphertext, size_t ciphertextLength, byte *plaintext, const NameValuePairs ¶meters=g_nullNameValuePairs) const |
Decrypt a byte string. More... | |
bool | ParameterSupported (const char *name) const |
size_t | FixedMaxPlaintextLength () const |
size_t | FixedCiphertextLength () const |
size_t | MaxPlaintextLength (size_t ciphertextLength) const |
size_t | CiphertextLength (size_t plaintextLength) const |
virtual BufferedTransformation * | CreateDecryptionFilter (RandomNumberGenerator &rng, BufferedTransformation *attachment=NULL, const NameValuePairs ¶meters=g_nullNameValuePairs) const |
create a new decryption filter More... | |
DecodingResult | FixedLengthDecrypt (RandomNumberGenerator &rng, const byte *ciphertext, byte *plaintext, const NameValuePairs ¶meters=g_nullNameValuePairs) const |
decrypt a fixed size ciphertext | |
CryptoMaterial & | AccessMaterial () |
returns a reference to the crypto material used by this object | |
const CryptoMaterial & | GetMaterial () const |
returns a const reference to the crypto material used by this object | |
void | BERDecode (BufferedTransformation &bt) |
for backwards compatibility, calls AccessMaterial().Load(bt) | |
void | DEREncode (BufferedTransformation &bt) const |
for backwards compatibility, calls GetMaterial().Save(bt) | |
virtual Clonable * | Clone () const |
Copies this object. More... | |
Static Public Member Functions | |
static std::string | StaticAlgorithmName () |
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virtualinherited |
Decrypt a byte string.
rng | a RandomNumberGenerator derived class |
ciphertext | the encrypted byte buffer |
ciphertextLength | the size of the encrypted byte buffer |
plaintext | a byte buffer to hold the decrypted string |
parameters | additional configuration options |
COUNTOF(plaintext) == MaxPlaintextLength(ciphertextLength)
ensures the output byte buffer is large enoughIf DecodingResult::isValidCoding is true, then DecodingResult::messageLength is valid and holds the the actual length of the plaintext recovered. on success. The result is undefined if decryption failed. If DecodingResult::isValidCoding is false, then DecodingResult::messageLength is undefined.
Implements PK_Decryptor.
Definition at line 140 of file pubkey.cpp.
References Integer::ByteCount(), Integer::Encode(), IntToString(), SecBlock< T, A >::size(), and Integer::Zero().
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virtualinherited |
create a new decryption filter
Definition at line 864 of file cryptlib.cpp.
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inlinevirtualinherited |
Copies this object.
NotImplemented |
Definition at line 464 of file cryptlib.h.