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60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
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#ifndef _OPENCL_CAST_H
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#define _OPENCL_CAST_H
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// #include "opencl_misc.h"
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#define GET_UINT32BE(n, b, i) \
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{ \
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(n) = ((uint) (b)[(i)] << 24) \
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| ((uint) (b)[(i) + 1] << 16) \
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| ((uint) (b)[(i) + 2] << 8) \
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| ((uint) (b)[(i) + 3] ); \
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}
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#define PUT_UINT32BE(n, b, i) \
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{ \
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(b)[(i) ] = (u8) ((n) >> 24); \
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(b)[(i) + 1] = (u8) ((n) >> 16); \
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(b)[(i) + 2] = (u8) ((n) >> 8); \
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(b)[(i) + 3] = (u8) ((n) ); \
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}
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typedef struct {
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u32 K[32];
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} CAST_KEY;
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#define GETBYTE(x, y) (uint)(u8)((x)>>(8*(y)))
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/* Macros to access 8-bit bytes out of a 32-bit word */
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#define U8a(x) GETBYTE(x,3)
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#define U8b(x) GETBYTE(x,2)
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#define U8c(x) GETBYTE(x,1)
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#define U8d(x) GETBYTE(x,0)
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/* CAST uses three different round functions */
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#define _CAST_f1(l, r, km, kr) \
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t = hc_rotl32_S(km + r, kr); \
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l ^= ((s_S[0][U8a(t)] ^ s_S[1][U8b(t)]) - \
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s_S[2][U8c(t)]) + s_S[3][U8d(t)];
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#define _CAST_f2(l, r, km, kr) \
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t = hc_rotl32_S(km ^ r, kr); \
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l ^= ((s_S[0][U8a(t)] - s_S[1][U8b(t)]) + \
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s_S[2][U8c(t)]) ^ s_S[3][U8d(t)];
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#define _CAST_f3(l, r, km, kr) \
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t = hc_rotl32_S(km - r, kr); \
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l ^= ((s_S[0][U8a(t)] + s_S[1][U8b(t)]) ^ \
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s_S[2][U8c(t)]) - s_S[3][U8d(t)];
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#define _CAST_F1(l, r, i, j) _CAST_f1(l, r, K[i], K[i+j])
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#define _CAST_F2(l, r, i, j) _CAST_f2(l, r, K[i], K[i+j])
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#define _CAST_F3(l, r, i, j) _CAST_f3(l, r, K[i], K[i+j])
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/* OpenSSL API compatibility */
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#define CAST_set_key(ckey, len, key) Cast5SetKey(ckey, len, key)
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#define CAST_ecb_encrypt(in, out, ckey) Cast5Encrypt(in, out, ckey)
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#define CAST_ecb_decrypt(in, out, ckey) Cast5Decrypt(in, out, ckey)
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#endif /* _OPENCL_CAST_H */
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