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author | madmaxoft@gmail.com <madmaxoft@gmail.com@0a769ca7-a7f5-676a-18bf-c427514a06d6> | 2013-03-23 21:53:08 +0100 |
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committer | madmaxoft@gmail.com <madmaxoft@gmail.com@0a769ca7-a7f5-676a-18bf-c427514a06d6> | 2013-03-23 21:53:08 +0100 |
commit | 561f10539494ce6cba62d58dab2a6686e04c760b (patch) | |
tree | f9d4cb50653ffa7473bdf148b900145aff8e4074 /CryptoPP/arc4.cpp | |
parent | MemDumpAnalysis now outputs executable to MCServer folder and debugging starts there. (diff) | |
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Diffstat (limited to 'CryptoPP/arc4.cpp')
-rw-r--r-- | CryptoPP/arc4.cpp | 120 |
1 files changed, 0 insertions, 120 deletions
diff --git a/CryptoPP/arc4.cpp b/CryptoPP/arc4.cpp deleted file mode 100644 index b5c27309e..000000000 --- a/CryptoPP/arc4.cpp +++ /dev/null @@ -1,120 +0,0 @@ -// arc4.cpp - written and placed in the public domain by Wei Dai - -// The ARC4 algorithm was first revealed in an anonymous email to the -// cypherpunks mailing list. This file originally contained some -// code copied from this email. The code has since been rewritten in order -// to clarify the copyright status of this file. It should now be -// completely in the public domain. - -#include "pch.h" -#define CRYPTOPP_ENABLE_NAMESPACE_WEAK 1 -#include "arc4.h" - -NAMESPACE_BEGIN(CryptoPP) -namespace Weak1 { - -void ARC4_TestInstantiations() -{ - ARC4 x; -} - -ARC4_Base::~ARC4_Base() -{ - m_x = m_y = 0; -} - -void ARC4_Base::UncheckedSetKey(const byte *key, unsigned int keyLen, const NameValuePairs ¶ms) -{ - AssertValidKeyLength(keyLen); - - m_x = 1; - m_y = 0; - - unsigned int i; - for (i=0; i<256; i++) - m_state[i] = i; - - unsigned int keyIndex = 0, stateIndex = 0; - for (i=0; i<256; i++) - { - unsigned int a = m_state[i]; - stateIndex += key[keyIndex] + a; - stateIndex &= 0xff; - m_state[i] = m_state[stateIndex]; - m_state[stateIndex] = a; - if (++keyIndex >= keyLen) - keyIndex = 0; - } - - int discardBytes = params.GetIntValueWithDefault("DiscardBytes", GetDefaultDiscardBytes()); - DiscardBytes(discardBytes); -} - -template <class T> -static inline unsigned int MakeByte(T &x, T &y, byte *s) -{ - unsigned int a = s[x]; - y = (y+a) & 0xff; - unsigned int b = s[y]; - s[x] = b; - s[y] = a; - x = (x+1) & 0xff; - return s[(a+b) & 0xff]; -} - -void ARC4_Base::GenerateBlock(byte *output, size_t size) -{ - while (size--) - *output++ = MakeByte(m_x, m_y, m_state); -} - -void ARC4_Base::ProcessData(byte *outString, const byte *inString, size_t length) -{ - if (length == 0) - return; - - byte *const s = m_state; - unsigned int x = m_x; - unsigned int y = m_y; - - if (inString == outString) - { - do - { - *outString++ ^= MakeByte(x, y, s); - } while (--length); - } - else - { - do - { - *outString++ = *inString++ ^ MakeByte(x, y, s); - } - while(--length); - } - - m_x = x; - m_y = y; -} - -void ARC4_Base::DiscardBytes(size_t length) -{ - if (length == 0) - return; - - byte *const s = m_state; - unsigned int x = m_x; - unsigned int y = m_y; - - do - { - MakeByte(x, y, s); - } - while(--length); - - m_x = x; - m_y = y; -} - -} -NAMESPACE_END |