402 lines
8.4 KiB
C
402 lines
8.4 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_SERPENT_H
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#define _INC_CIPHER_SERPENT_H
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/* 15 terms */
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#define sb0(a,b,c,d,e,f,g,h) \
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t1 = a ^ d; \
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t2 = a & d; \
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t3 = c ^ t1; \
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t6 = b & t1; \
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t4 = b ^ t3; \
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t10 = ~t3; \
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h = t2 ^ t4; \
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t7 = a ^ t6; \
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t14 = ~t7; \
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t8 = c | t7; \
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t11 = t3 ^ t7; \
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g = t4 ^ t8; \
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t12 = h & t11; \
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f = t10 ^ t12; \
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e = t12 ^ t14
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/* 15 terms */
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#define ib0(a,b,c,d,e,f,g,h) \
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t1 = ~a; \
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t2 = a ^ b; \
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t3 = t1 | t2; \
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t4 = d ^ t3; \
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t7 = d & t2; \
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t5 = c ^ t4; \
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t8 = t1 ^ t7; \
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g = t2 ^ t5; \
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t11 = a & t4; \
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t9 = g & t8; \
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t14 = t5 ^ t8; \
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f = t4 ^ t9; \
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t12 = t5 | f; \
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h = t11 ^ t12; \
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e = h ^ t14
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/* 14 terms! */
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#define sb1(a,b,c,d,e,f,g,h) \
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t1 = ~a; \
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t2 = b ^ t1; \
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t3 = a | t2; \
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t4 = d | t2; \
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t5 = c ^ t3; \
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g = d ^ t5; \
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t7 = b ^ t4; \
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t8 = t2 ^ g; \
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t9 = t5 & t7; \
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h = t8 ^ t9; \
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t11 = t5 ^ t7; \
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f = h ^ t11; \
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t13 = t8 & t11; \
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e = t5 ^ t13
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/* 17 terms */
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#define ib1(a,b,c,d,e,f,g,h) \
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t1 = a ^ d; \
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t2 = a & b; \
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t3 = b ^ c; \
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t4 = a ^ t3; \
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t5 = b | d; \
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t7 = c | t1; \
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h = t4 ^ t5; \
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t8 = b ^ t7; \
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t11 = ~t2; \
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t9 = t4 & t8; \
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f = t1 ^ t9; \
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t13 = t9 ^ t11; \
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t12 = h & f; \
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g = t12 ^ t13; \
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t15 = a & d; \
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t16 = c ^ t13; \
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e = t15 ^ t16
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/* 16 terms */
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#define sb2(a,b,c,d,e,f,g,h) \
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t1 = ~a; \
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t2 = b ^ d; \
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t3 = c & t1; \
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t13 = d | t1; \
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e = t2 ^ t3; \
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t5 = c ^ t1; \
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t6 = c ^ e; \
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t7 = b & t6; \
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t10 = e | t5; \
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h = t5 ^ t7; \
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t9 = d | t7; \
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t11 = t9 & t10; \
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t14 = t2 ^ h; \
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g = a ^ t11; \
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t15 = g ^ t13; \
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f = t14 ^ t15
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/* 16 terms */
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#define ib2(a,b,c,d,e,f,g,h) \
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t1 = b ^ d; \
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t2 = ~t1; \
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t3 = a ^ c; \
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t4 = c ^ t1; \
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t7 = a | t2; \
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t5 = b & t4; \
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t8 = d ^ t7; \
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t11 = ~t4; \
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e = t3 ^ t5; \
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t9 = t3 | t8; \
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t14 = d & t11; \
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h = t1 ^ t9; \
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t12 = e | h; \
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f = t11 ^ t12; \
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t15 = t3 ^ t12; \
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g = t14 ^ t15
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/* 17 terms */
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#define sb3(a,b,c,d,e,f,g,h) \
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t1 = a ^ c; \
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t2 = d ^ t1; \
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t3 = a & t2; \
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t4 = d ^ t3; \
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t5 = b & t4; \
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g = t2 ^ t5; \
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t7 = a | g; \
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t8 = b | d; \
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t11 = a | d; \
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t9 = t4 & t7; \
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f = t8 ^ t9; \
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t12 = b ^ t11; \
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t13 = g ^ t9; \
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t15 = t3 ^ t8; \
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h = t12 ^ t13; \
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t16 = c & t15; \
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e = t12 ^ t16
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/* 16 term solution that performs less well than 17 term one
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in my environment (PPro/PII)
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#define sb3(a,b,c,d,e,f,g,h) \
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t1 = a ^ b; \
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t2 = a & c; \
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t3 = a | d; \
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t4 = c ^ d; \
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t5 = t1 & t3; \
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t6 = t2 | t5; \
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g = t4 ^ t6; \
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t8 = b ^ t3; \
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t9 = t6 ^ t8; \
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t10 = t4 & t9; \
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e = t1 ^ t10; \
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t12 = g & e; \
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f = t9 ^ t12; \
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t14 = b | d; \
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t15 = t4 ^ t12; \
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h = t14 ^ t15
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*/
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/* 17 terms */
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#define ib3(a,b,c,d,e,f,g,h) \
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t1 = b ^ c; \
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t2 = b | c; \
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t3 = a ^ c; \
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t7 = a ^ d; \
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t4 = t2 ^ t3; \
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t5 = d | t4; \
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t9 = t2 ^ t7; \
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e = t1 ^ t5; \
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t8 = t1 | t5; \
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t11 = a & t4; \
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g = t8 ^ t9; \
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t12 = e | t9; \
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f = t11 ^ t12; \
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t14 = a & g; \
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t15 = t2 ^ t14; \
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t16 = e & t15; \
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h = t4 ^ t16
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/* 15 terms */
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#define sb4(a,b,c,d,e,f,g,h) \
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t1 = a ^ d; \
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t2 = d & t1; \
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t3 = c ^ t2; \
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t4 = b | t3; \
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h = t1 ^ t4; \
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t6 = ~b; \
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t7 = t1 | t6; \
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e = t3 ^ t7; \
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t9 = a & e; \
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t10 = t1 ^ t6; \
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t11 = t4 & t10; \
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g = t9 ^ t11; \
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t13 = a ^ t3; \
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t14 = t10 & g; \
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f = t13 ^ t14
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/* 17 terms */
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#define ib4(a,b,c,d,e,f,g,h) \
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t1 = c ^ d; \
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t2 = c | d; \
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t3 = b ^ t2; \
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t4 = a & t3; \
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f = t1 ^ t4; \
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t6 = a ^ d; \
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t7 = b | d; \
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t8 = t6 & t7; \
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h = t3 ^ t8; \
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t10 = ~a; \
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t11 = c ^ h; \
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t12 = t10 | t11;\
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e = t3 ^ t12; \
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t14 = c | t4; \
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t15 = t7 ^ t14; \
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t16 = h | t10; \
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g = t15 ^ t16
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/* 16 terms */
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#define sb5(a,b,c,d,e,f,g,h) \
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t1 = ~a; \
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t2 = a ^ b; \
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t3 = a ^ d; \
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t4 = c ^ t1; \
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t5 = t2 | t3; \
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e = t4 ^ t5; \
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t7 = d & e; \
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t8 = t2 ^ e; \
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t10 = t1 | e; \
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f = t7 ^ t8; \
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t11 = t2 | t7; \
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t12 = t3 ^ t10; \
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t14 = b ^ t7; \
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g = t11 ^ t12; \
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t15 = f & t12; \
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h = t14 ^ t15
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/* 16 terms */
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#define ib5(a,b,c,d,e,f,g,h) \
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t1 = ~c; \
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t2 = b & t1; \
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t3 = d ^ t2; \
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t4 = a & t3; \
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t5 = b ^ t1; \
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h = t4 ^ t5; \
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t7 = b | h; \
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t8 = a & t7; \
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f = t3 ^ t8; \
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t10 = a | d; \
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t11 = t1 ^ t7; \
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e = t10 ^ t11; \
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t13 = a ^ c; \
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t14 = b & t10; \
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t15 = t4 | t13; \
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g = t14 ^ t15
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/* 15 terms */
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#define sb6(a,b,c,d,e,f,g,h) \
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t1 = ~a; \
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t2 = a ^ d; \
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t3 = b ^ t2; \
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t4 = t1 | t2; \
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t5 = c ^ t4; \
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f = b ^ t5; \
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t13 = ~t5; \
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t7 = t2 | f; \
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t8 = d ^ t7; \
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t9 = t5 & t8; \
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g = t3 ^ t9; \
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t11 = t5 ^ t8; \
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e = g ^ t11; \
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t14 = t3 & t11; \
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h = t13 ^ t14
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/* 15 terms */
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#define ib6(a,b,c,d,e,f,g,h) \
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t1 = ~a; \
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t2 = a ^ b; \
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t3 = c ^ t2; \
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t4 = c | t1; \
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t5 = d ^ t4; \
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t13 = d & t1; \
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f = t3 ^ t5; \
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t7 = t3 & t5; \
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t8 = t2 ^ t7; \
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t9 = b | t8; \
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h = t5 ^ t9; \
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t11 = b | h; \
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e = t8 ^ t11; \
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t14 = t3 ^ t11; \
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g = t13 ^ t14
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/* 17 terms */
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#define sb7(a,b,c,d,e,f,g,h) \
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t1 = ~c; \
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t2 = b ^ c; \
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t3 = b | t1; \
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t4 = d ^ t3; \
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t5 = a & t4; \
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t7 = a ^ d; \
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h = t2 ^ t5; \
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t8 = b ^ t5; \
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t9 = t2 | t8; \
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t11 = d & t3; \
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f = t7 ^ t9; \
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t12 = t5 ^ f; \
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t15 = t1 | t4; \
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t13 = h & t12; \
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g = t11 ^ t13; \
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t16 = t12 ^ g; \
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e = t15 ^ t16
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/* 17 terms */
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#define ib7(a,b,c,d,e,f,g,h) \
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t1 = a & b; \
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t2 = a | b; \
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t3 = c | t1; \
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t4 = d & t2; \
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h = t3 ^ t4; \
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t6 = ~d; \
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t7 = b ^ t4; \
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t8 = h ^ t6; \
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t11 = c ^ t7; \
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t9 = t7 | t8; \
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f = a ^ t9; \
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t12 = d | f; \
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e = t11 ^ t12; \
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t14 = a & h; \
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t15 = t3 ^ f; \
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t16 = e ^ t14; \
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g = t15 ^ t16
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#define k_xor(r,a,b,c,d) \
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a ^= ks[4 * r + 8]; \
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b ^= ks[4 * r + 9]; \
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c ^= ks[4 * r + 10]; \
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d ^= ks[4 * r + 11]
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#define k_set(r,a,b,c,d) \
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a = ks[4 * r + 8]; \
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b = ks[4 * r + 9]; \
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c = ks[4 * r + 10]; \
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d = ks[4 * r + 11]
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#define k_get(r,a,b,c,d) \
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ks[4 * r + 8] = a; \
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ks[4 * r + 9] = b; \
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ks[4 * r + 10] = c; \
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ks[4 * r + 11] = d
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/* the linear transformation and its inverse */
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#define rot(a,b,c,d) \
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a = hc_rotl32_S(a, 13); \
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c = hc_rotl32_S(c, 3); \
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d ^= c ^ (a << 3); \
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b ^= a ^ c; \
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d = hc_rotl32_S(d, 7); \
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b = hc_rotl32_S(b, 1); \
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a ^= b ^ d; \
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c ^= d ^ (b << 7); \
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a = hc_rotl32_S(a, 5); \
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c = hc_rotl32_S(c, 22)
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#define irot(a,b,c,d) \
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c = hc_rotr32_S(c, 22); \
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a = hc_rotr32_S(a, 5); \
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c ^= d ^ (b << 7); \
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a ^= b ^ d; \
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d = hc_rotr32_S(d, 7); \
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b = hc_rotr32_S(b, 1); \
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d ^= c ^ (a << 3); \
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b ^= a ^ c; \
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c = hc_rotr32_S(c, 3); \
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a = hc_rotr32_S(a, 13)
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DECLSPEC void serpent128_set_key (u32 *ks, const u32 *ukey);
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DECLSPEC void serpent128_encrypt (const u32 *ks, const u32 *in, u32 *out);
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DECLSPEC void serpent128_decrypt (const u32 *ks, const u32 *in, u32 *out);
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DECLSPEC void serpent256_set_key (u32 *ks, const u32 *ukey);
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DECLSPEC void serpent256_encrypt (const u32 *ks, const u32 *in, u32 *out);
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DECLSPEC void serpent256_decrypt (const u32 *ks, const u32 *in, u32 *out);
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#endif // _INC_CIPHER_SERPENT_H
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