Crypto++ 8.2
Free C&
dsa.h
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1// dsa.h - originally written and placed in the public domain by Wei Dai
2
3/// \file dsa.h
4/// \brief Classes for the DSA signature algorithm
5
6#ifndef CRYPTOPP_DSA_H
7#define CRYPTOPP_DSA_H
8
9#include "cryptlib.h"
10#include "gfpcrypt.h"
11
12NAMESPACE_BEGIN(CryptoPP)
13
14/// \brief DSA Signature Format
15/// \details The DSA signature format used by Crypto++ is as defined by IEEE P1363.
16/// Java and .Net use the DER format, and OpenPGP uses the OpenPGP format.
18 /// \brief Crypto++ native signature encoding format
20 /// \brief signature encoding format used by Java and .Net
22 /// \brief OpenPGP signature encoding format
24};
25
26/// \brief Converts between signature encoding formats
27/// \param buffer byte buffer for the converted signature encoding
28/// \param bufferSize the length of the converted signature encoding buffer
29/// \param toFormat the source signature format
30/// \param signature byte buffer for the existing signature encoding
31/// \param signatureLen the length of the existing signature encoding buffer
32/// \param fromFormat the source signature format
33/// \details This function converts between these formats, and returns length
34/// of signature in the target format. If <tt>toFormat == DSA_P1363</tt>, then
35/// <tt>bufferSize</tt> must equal <tt>publicKey.SignatureLength()</tt>
36/// \since Crypto++ 1.0
37size_t DSAConvertSignatureFormat(byte *buffer, size_t bufferSize, DSASignatureFormat toFormat,
38 const byte *signature, size_t signatureLen, DSASignatureFormat fromFormat);
39
40NAMESPACE_END
41
42#endif
Abstract base classes that provide a uniform interface to this library.
size_t DSAConvertSignatureFormat(byte *buffer, size_t bufferSize, DSASignatureFormat toFormat, const byte *signature, size_t signatureLen, DSASignatureFormat fromFormat)
Converts between signature encoding formats.
Definition: dsa.cpp:15
DSASignatureFormat
DSA Signature Format.
Definition: dsa.h:17
@ DSA_OPENPGP
OpenPGP signature encoding format.
Definition: dsa.h:23
@ DSA_P1363
Crypto++ native signature encoding format.
Definition: dsa.h:19
@ DSA_DER
signature encoding format used by Java and .Net
Definition: dsa.h:21
Classes and functions for schemes based on Discrete Logs (DL) over GF(p)
Crypto++ library namespace.