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author | Jeffrey Walton <noloader@gmail.com> | 2015-11-05 01:59:46 -0500 |
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committer | Jeffrey Walton <noloader@gmail.com> | 2015-11-05 01:59:46 -0500 |
commit | 48809d4e85c125814425c621d8d0d89f95405924 (patch) | |
tree | 1010fd16c4b1199f3d27dd726dda241a2bd29f83 /salsa.h | |
parent | 025337a94aceb75d188149db70c2094673772816 (diff) | |
download | cryptopp-git-48809d4e85c125814425c621d8d0d89f95405924.tar.gz |
CRYPTOPP 5.6.3 RC6 checkin
Diffstat (limited to 'salsa.h')
-rw-r--r-- | salsa.h | 131 |
1 files changed, 66 insertions, 65 deletions
@@ -1,65 +1,66 @@ -// 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 ¶ms, 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 ¶ms, 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 +// salsa.h - written and placed in the public domain by Wei Dai
+
+#ifndef CRYPTOPP_SALSA_H
+#define CRYPTOPP_SALSA_H
+
+#include "strciphr.h"
+#include "secblock.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 ¶ms, 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 ¶ms, 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
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