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author | Micah Anderson <micah@riseup.net> | 2013-08-22 16:39:52 -0400 |
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committer | Micah Anderson <micah@riseup.net> | 2013-08-22 16:57:38 -0400 |
commit | 6d35b188b668c5007409e63a15e8340ed34dcfb8 (patch) | |
tree | c9dd25f3675b3b6f9b29b0786057f8a4d377bc2b /src-cryptopp/salsa.h | |
parent | 86a1089dc6694f58d0f3356bdf9c8fe4061421f5 (diff) | |
parent | 5e60e0e3af85f22aa0afe8bf0ecf85619afacfeb (diff) |
Merge tag 'upstream/0.6.0.12'
Upstream version 0.6.0.12
Diffstat (limited to 'src-cryptopp/salsa.h')
-rw-r--r-- | src-cryptopp/salsa.h | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/src-cryptopp/salsa.h b/src-cryptopp/salsa.h new file mode 100644 index 0000000..49af885 --- /dev/null +++ b/src-cryptopp/salsa.h @@ -0,0 +1,65 @@ +// 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 |