From d23a489940499bd6c634a1cb0a9875f094f8a850 Mon Sep 17 00:00:00 2001
From: weidai <weidai@57ff6487-cd31-0410-9ec3-f628ee90f5f0>
Date: Thu, 20 Mar 2003 01:24:12 +0000
Subject: various changes for 5.1

git-svn-id: svn://svn.code.sf.net/p/cryptopp/code/trunk/c5@38 57ff6487-cd31-0410-9ec3-f628ee90f5f0
---
 pkcspad.h | 76 +++++++++++++++++++++++----------------------------------------
 1 file changed, 27 insertions(+), 49 deletions(-)

(limited to 'pkcspad.h')

diff --git a/pkcspad.h b/pkcspad.h
index 347bd95..2e14a5e 100644
--- a/pkcspad.h
+++ b/pkcspad.h
@@ -6,8 +6,8 @@
 
 NAMESPACE_BEGIN(CryptoPP)
 
-/// <a href="http://www.weidai.com/scan-mirror/ca.html#cem_PKCS1-1.5">EME-PKCS1-v1_5</a>
-class PKCS_EncryptionPaddingScheme : public PK_PaddingAlgorithm
+//! <a href="http://www.weidai.com/scan-mirror/ca.html#cem_PKCS1-1.5">EME-PKCS1-v1_5</a>
+class PKCS_EncryptionPaddingScheme : public PK_EncryptionMessageEncodingMethod
 {
 public:
 	static const char * StaticAlgorithmName() {return "EME-PKCS1-v1_5";}
@@ -17,50 +17,41 @@ public:
 	DecodingResult Unpad(const byte *padded, unsigned int paddedLength, byte *raw) const;
 };
 
-/// <a href="http://www.weidai.com/scan-mirror/sig.html#sem_PKCS1-1.5">EMSA-PKCS1-v1_5</a>
-class PKCS_SignaturePaddingScheme : public PK_PaddingAlgorithm
+template <class H> struct PKCS_DigestDecoration
 {
-public:
-	static const char * StaticAlgorithmName() {return "EMSA-PKCS1-v1_5";}
-
-	unsigned int MaxUnpaddedLength(unsigned int paddedLength) const;
-	void Pad(RandomNumberGenerator &rng, const byte *raw, unsigned int inputLength, byte *padded, unsigned int paddedLength) const;
-	DecodingResult Unpad(const byte *padded, unsigned int paddedLength, byte *raw) const;
+	static const byte decoration[];
+	static const unsigned int length;
 };
 
-/// <a href="http://www.weidai.com/scan-mirror/sig.html#sem_PKCS1-1.5">EMSA-PKCS1-v1_5</a>
-template <class H>
-class PKCS_DecoratedHashModule : public HashTransformationWithDefaultTruncation
+//! <a href="http://www.weidai.com/scan-mirror/sig.html#sem_PKCS1-1.5">EMSA-PKCS1-v1_5</a>
+class PKCS1v15_SignatureMessageEncodingMethod : public PK_DeterministicSignatureMessageEncodingMethod
 {
 public:
-	static std::string StaticAlgorithmName() {return std::string("EMSA-PKCS1-v1_5(") + H::StaticAlgorithmName() + ")";}
-
-	void Update(const byte *input, unsigned int length)
-		{h.Update(input, length);}
-	unsigned int DigestSize() const;
-	void Final(byte *digest);
-	void Restart() {h.Restart();}
+	static const char * StaticAlgorithmName() {return "EMSA-PKCS1-v1_5";}
 
-private:
-	H h;
+	void ComputeMessageRepresentative(RandomNumberGenerator &rng, 
+		const byte *recoverableMessage, unsigned int recoverableMessageLength,
+		HashTransformation &hash, HashIdentifier hashIdentifier, bool messageEmpty,
+		byte *representative, unsigned int representativeBitLength) const;
+
+	struct HashIdentifierLookup
+	{
+		template <class H> struct HashIdentifierLookup2
+		{
+			static HashIdentifier Lookup()
+			{
+				return HashIdentifier(PKCS_DigestDecoration<H>::decoration, PKCS_DigestDecoration<H>::length);
+			}
+		};
+	};
 };
 
-//! PKCS #1 version 1.5, for use with RSAES and RSASSA
+//! PKCS #1 version 1.5, for use with RSAES and RSASS
 /*! The following hash functions are supported for signature: SHA, MD2, MD5, RIPEMD160, SHA256, SHA384, SHA512. */
 struct PKCS1v15 : public SignatureStandard, public EncryptionStandard
 {
-	typedef PKCS_EncryptionPaddingScheme EncryptionPaddingAlgorithm;
-
-	template <class H> struct SignaturePaddingAlgorithm {typedef PKCS_SignaturePaddingScheme type;};
-	template <class H> struct DecoratedHashingAlgorithm {typedef PKCS_DecoratedHashModule<H> type;};
-};
-
-template<> struct CryptoStandardTraits<PKCS1v15> : public PKCS1v15 {};
-
-template <class H> struct PKCS_DigestDecoration
-{
-	static const byte decoration[];
-	static const unsigned int length;
+	typedef PKCS_EncryptionPaddingScheme EncryptionMessageEncodingMethod;
+	typedef PKCS1v15_SignatureMessageEncodingMethod SignatureMessageEncodingMethod;
 };
 
 // PKCS_DecoratedHashModule can be instantiated with the following
@@ -69,24 +60,11 @@ class SHA;
 class MD2;
 class MD5;
 class RIPEMD160;
+class Tiger;
 class SHA256;
 class SHA384;
 class SHA512;
 
-template <class H>
-void PKCS_DecoratedHashModule<H>::Final(byte *digest)
-{
-	const unsigned int decorationLen = PKCS_DigestDecoration<H>::length;
-	memcpy(digest, PKCS_DigestDecoration<H>::decoration, decorationLen);
-	h.Final(digest+decorationLen);
-}
-
-template <class H>
-unsigned int PKCS_DecoratedHashModule<H>::DigestSize() const
-{
-	return h.DigestSize() + PKCS_DigestDecoration<H>::length; // PKCS_DigestDecoration<H>::length;
-}
-
 NAMESPACE_END
 
 #endif
-- 
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