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113 lines
3.8 KiB
C
113 lines
3.8 KiB
C
/**
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* Author......: See docs/credits.txt
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* License.....: MIT
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*/
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#ifndef _INC_CIPHER_DES_H
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#define _INC_CIPHER_DES_H
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// these really should be turned into real function
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#define PERM_OP(a,b,n,m) \
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{ \
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u32x t; \
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t = a >> n; \
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t = t ^ b; \
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t = t & m; \
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b = b ^ t; \
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t = t << n; \
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a = a ^ t; \
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}
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#define HPERM_OP(a,n,m) \
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{ \
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u32x t; \
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t = a << (16 + n); \
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t = t ^ a; \
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t = t & m; \
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a = a ^ t; \
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t = t >> (16 + n); \
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a = a ^ t; \
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}
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#define DES_IP(l,r) \
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{ \
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PERM_OP (r, l, 4, 0x0f0f0f0f); \
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PERM_OP (l, r, 16, 0x0000ffff); \
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PERM_OP (r, l, 2, 0x33333333); \
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PERM_OP (l, r, 8, 0x00ff00ff); \
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PERM_OP (r, l, 1, 0x55555555); \
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}
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#define DES_FP(l,r) \
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{ \
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PERM_OP (l, r, 1, 0x55555555); \
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PERM_OP (r, l, 8, 0x00ff00ff); \
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PERM_OP (l, r, 2, 0x33333333); \
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PERM_OP (r, l, 16, 0x0000ffff); \
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PERM_OP (l, r, 4, 0x0f0f0f0f); \
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}
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#define PERM_OP_S(a,b,n,m) \
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{ \
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u32 t; \
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t = a >> n; \
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t = t ^ b; \
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t = t & m; \
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b = b ^ t; \
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t = t << n; \
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a = a ^ t; \
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}
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#define HPERM_OP_S(a,n,m) \
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{ \
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u32 t; \
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t = a << (16 + n); \
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t = t ^ a; \
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t = t & m; \
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a = a ^ t; \
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t = t >> (16 + n); \
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a = a ^ t; \
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}
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#define DES_IP_S(l,r) \
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{ \
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PERM_OP_S (r, l, 4, 0x0f0f0f0f); \
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PERM_OP_S (l, r, 16, 0x0000ffff); \
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PERM_OP_S (r, l, 2, 0x33333333); \
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PERM_OP_S (l, r, 8, 0x00ff00ff); \
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PERM_OP_S (r, l, 1, 0x55555555); \
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}
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#define DES_FP_S(l,r) \
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{ \
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PERM_OP_S (l, r, 1, 0x55555555); \
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PERM_OP_S (r, l, 8, 0x00ff00ff); \
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PERM_OP_S (l, r, 2, 0x33333333); \
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PERM_OP_S (r, l, 16, 0x0000ffff); \
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PERM_OP_S (l, r, 4, 0x0f0f0f0f); \
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}
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#define DES_BOX_S(i,n,S) (S)[(n)][(i)]
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#if VECT_SIZE == 1
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#define DES_BOX(i,n,S) (S)[(n)][(i)]
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#elif VECT_SIZE == 2
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#define DES_BOX(i,n,S) make_u32x ((S)[(n)][(i).s0], (S)[(n)][(i).s1])
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#elif VECT_SIZE == 4
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#define DES_BOX(i,n,S) make_u32x ((S)[(n)][(i).s0], (S)[(n)][(i).s1], (S)[(n)][(i).s2], (S)[(n)][(i).s3])
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#elif VECT_SIZE == 8
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#define DES_BOX(i,n,S) make_u32x ((S)[(n)][(i).s0], (S)[(n)][(i).s1], (S)[(n)][(i).s2], (S)[(n)][(i).s3], (S)[(n)][(i).s4], (S)[(n)][(i).s5], (S)[(n)][(i).s6], (S)[(n)][(i).s7])
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#elif VECT_SIZE == 16
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#define DES_BOX(i,n,S) make_u32x ((S)[(n)][(i).s0], (S)[(n)][(i).s1], (S)[(n)][(i).s2], (S)[(n)][(i).s3], (S)[(n)][(i).s4], (S)[(n)][(i).s5], (S)[(n)][(i).s6], (S)[(n)][(i).s7], (S)[(n)][(i).s8], (S)[(n)][(i).s9], (S)[(n)][(i).sa], (S)[(n)][(i).sb], (S)[(n)][(i).sc], (S)[(n)][(i).sd], (S)[(n)][(i).se], (S)[(n)][(i).sf])
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#endif
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DECLSPEC void _des_crypt_encrypt (u32 *out, const u32 *in, const u32 *Kc, const u32 *Kd, SHM_TYPE u32 (*s_SPtrans)[64]);
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DECLSPEC void _des_crypt_decrypt (u32 *out, const u32 *in, const u32 *Kc, const u32 *Kd, SHM_TYPE u32 (*s_SPtrans)[64]);
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DECLSPEC void _des_crypt_keysetup (u32 c, u32 d, u32 *Kc, u32 *Kd, SHM_TYPE u32 (*s_skb)[64]);
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DECLSPEC void _des_crypt_encrypt_vect (u32x *out, const u32x *in, const u32x *Kc, const u32x *Kd, SHM_TYPE u32 (*s_SPtrans)[64]);
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DECLSPEC void _des_crypt_decrypt_vect (u32x *out, const u32x *in, const u32x *Kc, const u32x *Kd, SHM_TYPE u32 (*s_SPtrans)[64]);
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DECLSPEC void _des_crypt_keysetup_vect (u32x c, u32x d, u32x *Kc, u32x *Kd, SHM_TYPE u32 (*s_skb)[64]);
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#endif // _INC_CIPHER_DES_H
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