95 lines
2.8 KiB
C++
95 lines
2.8 KiB
C++
#ifndef CRYPTOPP_PKCSPAD_H
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#define CRYPTOPP_PKCSPAD_H
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#include "cryptlib.h"
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#include "pubkey.h"
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#ifdef CRYPTOPP_IS_DLL
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#include "sha.h"
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#endif
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NAMESPACE_BEGIN(CryptoPP)
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//! <a href="http://www.weidai.com/scan-mirror/ca.html#cem_PKCS1-1.5">EME-PKCS1-v1_5</a>
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class PKCS_EncryptionPaddingScheme : public PK_EncryptionMessageEncodingMethod
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{
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public:
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static const char * StaticAlgorithmName() {return "EME-PKCS1-v1_5";}
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size_t MaxUnpaddedLength(size_t paddedLength) const;
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void Pad(RandomNumberGenerator &rng, const byte *raw, size_t inputLength, byte *padded, size_t paddedLength, const NameValuePairs ¶meters) const;
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DecodingResult Unpad(const byte *padded, size_t paddedLength, byte *raw, const NameValuePairs ¶meters) const;
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};
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template <class H> class PKCS_DigestDecoration
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{
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public:
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static const byte decoration[];
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static const unsigned int length;
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};
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// PKCS_DigestDecoration can be instantiated with the following
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// classes as specified in PKCS#1 v2.0 and P1363a
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class SHA1;
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class RIPEMD160;
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class Tiger;
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class SHA224;
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class SHA256;
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class SHA384;
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class SHA512;
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namespace Weak1 {
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class MD2;
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class MD5;
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}
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// end of list
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#ifdef CRYPTOPP_IS_DLL
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CRYPTOPP_DLL_TEMPLATE_CLASS PKCS_DigestDecoration<SHA1>;
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CRYPTOPP_DLL_TEMPLATE_CLASS PKCS_DigestDecoration<SHA224>;
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CRYPTOPP_DLL_TEMPLATE_CLASS PKCS_DigestDecoration<SHA256>;
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CRYPTOPP_DLL_TEMPLATE_CLASS PKCS_DigestDecoration<SHA384>;
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CRYPTOPP_DLL_TEMPLATE_CLASS PKCS_DigestDecoration<SHA512>;
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#endif
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//! <a href="http://www.weidai.com/scan-mirror/sig.html#sem_PKCS1-1.5">EMSA-PKCS1-v1_5</a>
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class CRYPTOPP_DLL PKCS1v15_SignatureMessageEncodingMethod : public PK_DeterministicSignatureMessageEncodingMethod
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{
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public:
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static const char * CRYPTOPP_API StaticAlgorithmName() {return "EMSA-PKCS1-v1_5";}
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size_t MinRepresentativeBitLength(size_t hashIdentifierSize, size_t digestSize) const
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{return 8 * (digestSize + hashIdentifierSize + 10);}
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void ComputeMessageRepresentative(RandomNumberGenerator &rng,
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const byte *recoverableMessage, size_t recoverableMessageLength,
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HashTransformation &hash, HashIdentifier hashIdentifier, bool messageEmpty,
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byte *representative, size_t representativeBitLength) const;
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struct HashIdentifierLookup
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{
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template <class H> struct HashIdentifierLookup2
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{
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static HashIdentifier Lookup()
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{
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return HashIdentifier(PKCS_DigestDecoration<H>::decoration, PKCS_DigestDecoration<H>::length);
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}
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};
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};
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};
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//! PKCS #1 version 1.5, for use with RSAES and RSASS
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/*! Only the following hash functions are supported by this signature standard:
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\dontinclude pkcspad.h
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\skip can be instantiated
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\until end of list
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*/
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struct PKCS1v15 : public SignatureStandard, public EncryptionStandard
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{
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typedef PKCS_EncryptionPaddingScheme EncryptionMessageEncodingMethod;
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typedef PKCS1v15_SignatureMessageEncodingMethod SignatureMessageEncodingMethod;
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};
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NAMESPACE_END
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#endif
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