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authorJack Lloyd <[email protected]>2016-07-17 11:42:53 -0400
committerJack Lloyd <[email protected]>2016-09-02 05:28:10 -0400
commit1c0bc3cc6bcbd6318d8ae33d0442ffd24302a044 (patch)
treeda27a2597938f5b5edd1bd43f4d3d0e3c978e8be /src/lib/block/rc5/rc5.cpp
parentcd9f852b46f62087dcf7940303a0fe52a009e6c7 (diff)
Remove deprecated ciphers MARS, RC2, RC5, RC6, SAFER-SK and TEA
XTEA was also deprecated but has been spared, it does seem to be somewhat common (eg, included in the Go x/crypto library)
Diffstat (limited to 'src/lib/block/rc5/rc5.cpp')
-rw-r--r--src/lib/block/rc5/rc5.cpp133
1 files changed, 0 insertions, 133 deletions
diff --git a/src/lib/block/rc5/rc5.cpp b/src/lib/block/rc5/rc5.cpp
deleted file mode 100644
index a02a45e9f..000000000
--- a/src/lib/block/rc5/rc5.cpp
+++ /dev/null
@@ -1,133 +0,0 @@
-/*
-* RC5
-* (C) 1999-2007 Jack Lloyd
-*
-* Botan is released under the Simplified BSD License (see license.txt)
-*/
-
-#include <botan/rc5.h>
-#include <botan/loadstor.h>
-#include <botan/parsing.h>
-
-namespace Botan {
-
-/*
-* RC5 Encryption
-*/
-void RC5::encrypt_n(const byte in[], byte out[], size_t blocks) const
- {
- for(size_t i = 0; i != blocks; ++i)
- {
- u32bit A = load_le<u32bit>(in, 0);
- u32bit B = load_le<u32bit>(in, 1);
-
- A += m_S[0]; B += m_S[1];
- for(size_t j = 0; j != m_rounds; j += 4)
- {
- A = rotate_left(A ^ B, B % 32) + m_S[2*j+2];
- B = rotate_left(B ^ A, A % 32) + m_S[2*j+3];
-
- A = rotate_left(A ^ B, B % 32) + m_S[2*j+4];
- B = rotate_left(B ^ A, A % 32) + m_S[2*j+5];
-
- A = rotate_left(A ^ B, B % 32) + m_S[2*j+6];
- B = rotate_left(B ^ A, A % 32) + m_S[2*j+7];
-
- A = rotate_left(A ^ B, B % 32) + m_S[2*j+8];
- B = rotate_left(B ^ A, A % 32) + m_S[2*j+9];
- }
-
- store_le(out, A, B);
-
- in += BLOCK_SIZE;
- out += BLOCK_SIZE;
- }
- }
-
-/*
-* RC5 Decryption
-*/
-void RC5::decrypt_n(const byte in[], byte out[], size_t blocks) const
- {
- for(size_t i = 0; i != blocks; ++i)
- {
- u32bit A = load_le<u32bit>(in, 0);
- u32bit B = load_le<u32bit>(in, 1);
-
- for(size_t j = m_rounds; j != 0; j -= 4)
- {
- B = rotate_right(B - m_S[2*j+1], A % 32) ^ A;
- A = rotate_right(A - m_S[2*j ], B % 32) ^ B;
-
- B = rotate_right(B - m_S[2*j-1], A % 32) ^ A;
- A = rotate_right(A - m_S[2*j-2], B % 32) ^ B;
-
- B = rotate_right(B - m_S[2*j-3], A % 32) ^ A;
- A = rotate_right(A - m_S[2*j-4], B % 32) ^ B;
-
- B = rotate_right(B - m_S[2*j-5], A % 32) ^ A;
- A = rotate_right(A - m_S[2*j-6], B % 32) ^ B;
- }
- B -= m_S[1]; A -= m_S[0];
-
- store_le(out, A, B);
-
- in += BLOCK_SIZE;
- out += BLOCK_SIZE;
- }
- }
-
-/*
-* RC5 Key Schedule
-*/
-void RC5::key_schedule(const byte key[], size_t length)
- {
- m_S.resize(2*m_rounds + 2);
-
- const size_t WORD_KEYLENGTH = (((length - 1) / 4) + 1);
- const size_t MIX_ROUNDS = 3 * std::max(WORD_KEYLENGTH, m_S.size());
-
- m_S[0] = 0xB7E15163;
- for(size_t i = 1; i != m_S.size(); ++i)
- m_S[i] = m_S[i-1] + 0x9E3779B9;
-
- secure_vector<u32bit> K(8);
-
- for(s32bit i = length-1; i >= 0; --i)
- K[i/4] = (K[i/4] << 8) + key[i];
-
- u32bit A = 0, B = 0;
-
- for(size_t i = 0; i != MIX_ROUNDS; ++i)
- {
- A = rotate_left(m_S[i % m_S.size()] + A + B, 3);
- B = rotate_left(K[i % WORD_KEYLENGTH] + A + B, (A + B) % 32);
- m_S[i % m_S.size()] = A;
- K[i % WORD_KEYLENGTH] = B;
- }
- }
-
-void RC5::clear()
- {
- zap(m_S);
- }
-
-/*
-* Return the name of this type
-*/
-std::string RC5::name() const
- {
- return "RC5(" + std::to_string(m_rounds) + ")";
- }
-
-/*
-* RC5 Constructor
-*/
-RC5::RC5(size_t r) : m_rounds(r)
- {
- if(m_rounds < 8 || m_rounds > 32 || (m_rounds % 4 != 0))
- throw Invalid_Argument("RC5: Invalid number of rounds " +
- std::to_string(m_rounds));
- }
-
-}