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authormadmaxoft@gmail.com <madmaxoft@gmail.com@0a769ca7-a7f5-676a-18bf-c427514a06d6>2012-08-30 23:06:13 +0200
committermadmaxoft@gmail.com <madmaxoft@gmail.com@0a769ca7-a7f5-676a-18bf-c427514a06d6>2012-08-30 23:06:13 +0200
commit539364846a89987ac2679988653f50332cb91d26 (patch)
treef1695473c1f493a19c5fbdb70f7f1faccf99d7f3 /CryptoPP/salsa.h
parentUpdated to V6 - "Stop" and "Progress report" functionality (diff)
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-rw-r--r--CryptoPP/salsa.h65
1 files changed, 65 insertions, 0 deletions
diff --git a/CryptoPP/salsa.h b/CryptoPP/salsa.h
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+// salsa.h - written and placed in the public domain by Wei Dai
+
+#ifndef CRYPTOPP_SALSA_H
+#define CRYPTOPP_SALSA_H
+
+#include "strciphr.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+//! _
+struct Salsa20_Info : public VariableKeyLength<32, 16, 32, 16, SimpleKeyingInterface::UNIQUE_IV, 8>
+{
+ static const char *StaticAlgorithmName() {return "Salsa20";}
+};
+
+class CRYPTOPP_NO_VTABLE Salsa20_Policy : public AdditiveCipherConcretePolicy<word32, 16>
+{
+protected:
+ void CipherSetKey(const NameValuePairs &params, const byte *key, size_t length);
+ void OperateKeystream(KeystreamOperation operation, byte *output, const byte *input, size_t iterationCount);
+ void CipherResynchronize(byte *keystreamBuffer, const byte *IV, size_t length);
+ bool CipherIsRandomAccess() const {return true;}
+ void SeekToIteration(lword iterationCount);
+#if CRYPTOPP_BOOL_X86 || CRYPTOPP_BOOL_X64
+ unsigned int GetAlignment() const;
+ unsigned int GetOptimalBlockSize() const;
+#endif
+
+ FixedSizeAlignedSecBlock<word32, 16> m_state;
+ int m_rounds;
+};
+
+/// <a href="http://www.cryptolounge.org/wiki/Salsa20">Salsa20</a>, variable rounds: 8, 12 or 20 (default 20)
+struct Salsa20 : public Salsa20_Info, public SymmetricCipherDocumentation
+{
+ typedef SymmetricCipherFinal<ConcretePolicyHolder<Salsa20_Policy, AdditiveCipherTemplate<> >, Salsa20_Info> Encryption;
+ typedef Encryption Decryption;
+};
+
+//! _
+struct XSalsa20_Info : public FixedKeyLength<32, SimpleKeyingInterface::UNIQUE_IV, 24>
+{
+ static const char *StaticAlgorithmName() {return "XSalsa20";}
+};
+
+class CRYPTOPP_NO_VTABLE XSalsa20_Policy : public Salsa20_Policy
+{
+public:
+ void CipherSetKey(const NameValuePairs &params, const byte *key, size_t length);
+ void CipherResynchronize(byte *keystreamBuffer, const byte *IV, size_t length);
+
+protected:
+ FixedSizeSecBlock<word32, 8> m_key;
+};
+
+/// <a href="http://www.cryptolounge.org/wiki/XSalsa20">XSalsa20</a>, variable rounds: 8, 12 or 20 (default 20)
+struct XSalsa20 : public XSalsa20_Info, public SymmetricCipherDocumentation
+{
+ typedef SymmetricCipherFinal<ConcretePolicyHolder<XSalsa20_Policy, AdditiveCipherTemplate<> >, XSalsa20_Info> Encryption;
+ typedef Encryption Decryption;
+};
+
+NAMESPACE_END
+
+#endif