diff options
| author | Vadim Dashevskiy <watcherhd@gmail.com> | 2012-05-15 10:38:20 +0000 |
|---|---|---|
| committer | Vadim Dashevskiy <watcherhd@gmail.com> | 2012-05-15 10:38:20 +0000 |
| commit | 48540940b6c28bb4378abfeb500ec45a625b37b6 (patch) | |
| tree | 2ef294c0763e802f91d868bdef4229b6868527de /plugins/CryptoPP/crypto/pssr.h | |
| parent | 5c350913f011e119127baeb32a6aedeb4f0d33bc (diff) | |
initial commit
git-svn-id: http://svn.miranda-ng.org/main/trunk@2 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c
Diffstat (limited to 'plugins/CryptoPP/crypto/pssr.h')
| -rw-r--r-- | plugins/CryptoPP/crypto/pssr.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/plugins/CryptoPP/crypto/pssr.h b/plugins/CryptoPP/crypto/pssr.h new file mode 100644 index 0000000000..e1ee5fec4f --- /dev/null +++ b/plugins/CryptoPP/crypto/pssr.h @@ -0,0 +1,66 @@ +#ifndef CRYPTOPP_PSSR_H
+#define CRYPTOPP_PSSR_H
+
+#include "pubkey.h"
+#include "emsa2.h"
+
+#ifdef CRYPTOPP_IS_DLL
+#include "sha.h"
+#endif
+
+NAMESPACE_BEGIN(CryptoPP)
+
+class CRYPTOPP_DLL PSSR_MEM_Base : public PK_RecoverableSignatureMessageEncodingMethod
+{
+ virtual bool AllowRecovery() const =0;
+ virtual size_t SaltLen(size_t hashLen) const =0;
+ virtual size_t MinPadLen(size_t hashLen) const =0;
+ virtual const MaskGeneratingFunction & GetMGF() const =0;
+
+public:
+ size_t MinRepresentativeBitLength(size_t hashIdentifierLength, size_t digestLength) const;
+ size_t MaxRecoverableLength(size_t representativeBitLength, size_t hashIdentifierLength, size_t digestLength) const;
+ bool IsProbabilistic() const;
+ bool AllowNonrecoverablePart() const;
+ bool RecoverablePartFirst() const;
+ void ComputeMessageRepresentative(RandomNumberGenerator &rng,
+ const byte *recoverableMessage, size_t recoverableMessageLength,
+ HashTransformation &hash, HashIdentifier hashIdentifier, bool messageEmpty,
+ byte *representative, size_t representativeBitLength) const;
+ DecodingResult RecoverMessageFromRepresentative(
+ HashTransformation &hash, HashIdentifier hashIdentifier, bool messageEmpty,
+ byte *representative, size_t representativeBitLength,
+ byte *recoverableMessage) const;
+};
+
+template <bool USE_HASH_ID> class PSSR_MEM_BaseWithHashId;
+template<> class PSSR_MEM_BaseWithHashId<true> : public EMSA2HashIdLookup<PSSR_MEM_Base> {};
+template<> class PSSR_MEM_BaseWithHashId<false> : public PSSR_MEM_Base {};
+
+template <bool ALLOW_RECOVERY, class MGF=P1363_MGF1, int SALT_LEN=-1, int MIN_PAD_LEN=0, bool USE_HASH_ID=false>
+class PSSR_MEM : public PSSR_MEM_BaseWithHashId<USE_HASH_ID>
+{
+ virtual bool AllowRecovery() const {return ALLOW_RECOVERY;}
+ virtual size_t SaltLen(size_t hashLen) const {return SALT_LEN < 0 ? hashLen : SALT_LEN;}
+ virtual size_t MinPadLen(size_t hashLen) const {return MIN_PAD_LEN < 0 ? hashLen : MIN_PAD_LEN;}
+ virtual const MaskGeneratingFunction & GetMGF() const {static MGF mgf; return mgf;}
+
+public:
+ static std::string CRYPTOPP_API StaticAlgorithmName() {return std::string(ALLOW_RECOVERY ? "PSSR-" : "PSS-") + MGF::StaticAlgorithmName();}
+};
+
+//! <a href="http://www.weidai.com/scan-mirror/sig.html#sem_PSSR-MGF1">PSSR-MGF1</a>
+struct PSSR : public SignatureStandard
+{
+ typedef PSSR_MEM<true> SignatureMessageEncodingMethod;
+};
+
+//! <a href="http://www.weidai.com/scan-mirror/sig.html#sem_PSS-MGF1">PSS-MGF1</a>
+struct PSS : public SignatureStandard
+{
+ typedef PSSR_MEM<false> SignatureMessageEncodingMethod;
+};
+
+NAMESPACE_END
+
+#endif
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