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/* |
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* Cisco router simulation platform. |
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* Copyright (c) 2007 Christophe Fillot (cf@utc.fr) |
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* |
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* S-box functions. |
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*/ |
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|
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#ifndef __SBOX_H__ |
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#define __SBOX_H__ |
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|
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#include <sys/types.h> |
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#include "utils.h" |
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|
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extern m_uint32_t sbox_array[]; |
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|
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static inline m_uint32_t sbox_compute(m_uint8_t *data,int len) |
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{ |
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m_uint32_t hash = 0; |
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|
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while(len > 0) { |
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hash ^= sbox_array[*data]; |
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hash *= 3; |
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data++; |
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} |
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|
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return(hash); |
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} |
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|
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static forced_inline m_uint32_t sbox_u32(m_uint32_t val) |
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{ |
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m_uint32_t hash = 0; |
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|
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hash ^= sbox_array[(m_uint8_t)val]; |
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hash *= 3; |
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val >>= 8; |
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|
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hash ^= sbox_array[(m_uint8_t)val]; |
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hash *= 3; |
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val >>= 8; |
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|
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hash ^= sbox_array[(m_uint8_t)val]; |
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hash *= 3; |
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val >>= 8; |
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|
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hash ^= sbox_array[(m_uint8_t)val]; |
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return(hash); |
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} |
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|
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#endif |