diff options
| author | Jeffrey Walton <noloader@gmail.com> | 2015-11-05 01:59:46 -0500 |
|---|---|---|
| committer | Jeffrey Walton <noloader@gmail.com> | 2015-11-05 01:59:46 -0500 |
| commit | 48809d4e85c125814425c621d8d0d89f95405924 (patch) | |
| tree | 1010fd16c4b1199f3d27dd726dda241a2bd29f83 /emsa2.h | |
| parent | 025337a94aceb75d188149db70c2094673772816 (diff) | |
| download | cryptopp-git-48809d4e85c125814425c621d8d0d89f95405924.tar.gz | |
CRYPTOPP 5.6.3 RC6 checkin
Diffstat (limited to 'emsa2.h')
| -rw-r--r-- | emsa2.h | 173 |
1 files changed, 87 insertions, 86 deletions
@@ -1,86 +1,87 @@ -#ifndef CRYPTOPP_EMSA2_H -#define CRYPTOPP_EMSA2_H - -/** \file - This file contains various padding schemes for public key algorithms. -*/ - -#include "cryptlib.h" -#include "pubkey.h" - -#ifdef CRYPTOPP_IS_DLL -#include "sha.h" -#endif - -NAMESPACE_BEGIN(CryptoPP) - -template <class H> class EMSA2HashId -{ -public: - static const byte id; -}; - -template <class BASE> -class EMSA2HashIdLookup : public BASE -{ -public: - struct HashIdentifierLookup - { - template <class H> struct HashIdentifierLookup2 - { - static HashIdentifier Lookup() - { - return HashIdentifier(&EMSA2HashId<H>::id, 1); - } - }; - }; -}; - -// EMSA2HashId can be instantiated with the following classes. -class SHA1; -class RIPEMD160; -class RIPEMD128; -class SHA256; -class SHA384; -class SHA512; -class Whirlpool; -class SHA224; -// end of list - -#ifdef CRYPTOPP_IS_DLL -CRYPTOPP_DLL_TEMPLATE_CLASS EMSA2HashId<SHA1>; -CRYPTOPP_DLL_TEMPLATE_CLASS EMSA2HashId<SHA224>; -CRYPTOPP_DLL_TEMPLATE_CLASS EMSA2HashId<SHA256>; -CRYPTOPP_DLL_TEMPLATE_CLASS EMSA2HashId<SHA384>; -CRYPTOPP_DLL_TEMPLATE_CLASS EMSA2HashId<SHA512>; -#endif - -//! _ -class CRYPTOPP_DLL EMSA2Pad : public EMSA2HashIdLookup<PK_DeterministicSignatureMessageEncodingMethod> -{ -public: - static const char * CRYPTOPP_API StaticAlgorithmName() {return "EMSA2";} - - size_t MinRepresentativeBitLength(size_t hashIdentifierLength, size_t digestLength) const - {return 8*digestLength + 31;} - - void ComputeMessageRepresentative(RandomNumberGenerator &rng, - const byte *recoverableMessage, size_t recoverableMessageLength, - HashTransformation &hash, HashIdentifier hashIdentifier, bool messageEmpty, - byte *representative, size_t representativeBitLength) const; -}; - -//! EMSA2, for use with RWSS and RSA_ISO -/*! Only the following hash functions are supported by this signature standard: - \dontinclude emsa2.h - \skip EMSA2HashId can be instantiated - \until end of list -*/ -struct P1363_EMSA2 : public SignatureStandard -{ - typedef EMSA2Pad SignatureMessageEncodingMethod; -}; - -NAMESPACE_END - -#endif +#ifndef CRYPTOPP_EMSA2_H
+#define CRYPTOPP_EMSA2_H
+
+/** \file
+ This file contains various padding schemes for public key algorithms.
+*/
+
+#include "cryptlib.h"
+#include "pubkey.h"
+#include "misc.h"
+
+#ifdef CRYPTOPP_IS_DLL
+#include "sha.h"
+#endif
+
+NAMESPACE_BEGIN(CryptoPP)
+
+template <class H> class EMSA2HashId
+{
+public:
+ static const byte id;
+};
+
+template <class BASE>
+class EMSA2HashIdLookup : public BASE
+{
+public:
+ struct HashIdentifierLookup
+ {
+ template <class H> struct HashIdentifierLookup2
+ {
+ static HashIdentifier Lookup()
+ {
+ return HashIdentifier(&EMSA2HashId<H>::id, 1);
+ }
+ };
+ };
+};
+
+// EMSA2HashId can be instantiated with the following classes.
+class SHA1;
+class RIPEMD160;
+class RIPEMD128;
+class SHA256;
+class SHA384;
+class SHA512;
+class Whirlpool;
+class SHA224;
+// end of list
+
+#ifdef CRYPTOPP_IS_DLL
+CRYPTOPP_DLL_TEMPLATE_CLASS EMSA2HashId<SHA1>;
+CRYPTOPP_DLL_TEMPLATE_CLASS EMSA2HashId<SHA224>;
+CRYPTOPP_DLL_TEMPLATE_CLASS EMSA2HashId<SHA256>;
+CRYPTOPP_DLL_TEMPLATE_CLASS EMSA2HashId<SHA384>;
+CRYPTOPP_DLL_TEMPLATE_CLASS EMSA2HashId<SHA512>;
+#endif
+
+//! _
+class CRYPTOPP_DLL EMSA2Pad : public EMSA2HashIdLookup<PK_DeterministicSignatureMessageEncodingMethod>
+{
+public:
+ static const char * CRYPTOPP_API StaticAlgorithmName() {return "EMSA2";}
+
+ size_t MinRepresentativeBitLength(size_t hashIdentifierLength, size_t digestLength) const
+ {CRYPTOPP_UNUSED(hashIdentifierLength); return 8*digestLength + 31;}
+
+ void ComputeMessageRepresentative(RandomNumberGenerator &rng,
+ const byte *recoverableMessage, size_t recoverableMessageLength,
+ HashTransformation &hash, HashIdentifier hashIdentifier, bool messageEmpty,
+ byte *representative, size_t representativeBitLength) const;
+};
+
+//! EMSA2, for use with RWSS and RSA_ISO
+/*! Only the following hash functions are supported by this signature standard:
+ \dontinclude emsa2.h
+ \skip EMSA2HashId can be instantiated
+ \until end of list
+*/
+struct P1363_EMSA2 : public SignatureStandard
+{
+ typedef EMSA2Pad SignatureMessageEncodingMethod;
+};
+
+NAMESPACE_END
+
+#endif
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