435 lines
8.3 KiB
C
435 lines
8.3 KiB
C
// private header for Serpent and Sosemanuk
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NAMESPACE_BEGIN(CryptoPP)
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// linear transformation
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#define LT(i,a,b,c,d,e) {\
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a = rotlFixed(a, 13); \
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c = rotlFixed(c, 3); \
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d = rotlFixed(d ^ c ^ (a << 3), 7); \
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b = rotlFixed(b ^ a ^ c, 1); \
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a = rotlFixed(a ^ b ^ d, 5); \
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c = rotlFixed(c ^ d ^ (b << 7), 22);}
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// inverse linear transformation
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#define ILT(i,a,b,c,d,e) {\
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c = rotrFixed(c, 22); \
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a = rotrFixed(a, 5); \
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c ^= d ^ (b << 7); \
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a ^= b ^ d; \
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b = rotrFixed(b, 1); \
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d = rotrFixed(d, 7) ^ c ^ (a << 3); \
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b ^= a ^ c; \
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c = rotrFixed(c, 3); \
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a = rotrFixed(a, 13);}
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// order of output from S-box functions
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#define beforeS0(f) f(0,a,b,c,d,e)
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#define afterS0(f) f(1,b,e,c,a,d)
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#define afterS1(f) f(2,c,b,a,e,d)
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#define afterS2(f) f(3,a,e,b,d,c)
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#define afterS3(f) f(4,e,b,d,c,a)
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#define afterS4(f) f(5,b,a,e,c,d)
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#define afterS5(f) f(6,a,c,b,e,d)
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#define afterS6(f) f(7,a,c,d,b,e)
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#define afterS7(f) f(8,d,e,b,a,c)
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// order of output from inverse S-box functions
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#define beforeI7(f) f(8,a,b,c,d,e)
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#define afterI7(f) f(7,d,a,b,e,c)
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#define afterI6(f) f(6,a,b,c,e,d)
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#define afterI5(f) f(5,b,d,e,c,a)
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#define afterI4(f) f(4,b,c,e,a,d)
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#define afterI3(f) f(3,a,b,e,c,d)
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#define afterI2(f) f(2,b,d,e,c,a)
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#define afterI1(f) f(1,a,b,c,e,d)
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#define afterI0(f) f(0,a,d,b,e,c)
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// The instruction sequences for the S-box functions
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// come from Dag Arne Osvik's paper "Speeding up Serpent".
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#define S0(i, r0, r1, r2, r3, r4) \
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{ \
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r3 ^= r0; \
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r4 = r1; \
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r1 &= r3; \
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r4 ^= r2; \
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r1 ^= r0; \
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r0 |= r3; \
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r0 ^= r4; \
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r4 ^= r3; \
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r3 ^= r2; \
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r2 |= r1; \
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r2 ^= r4; \
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r4 = ~r4; \
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r4 |= r1; \
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r1 ^= r3; \
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r1 ^= r4; \
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r3 |= r0; \
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r1 ^= r3; \
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r4 ^= r3; \
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}
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#define I0(i, r0, r1, r2, r3, r4) \
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{ \
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r2 = ~r2; \
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r4 = r1; \
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r1 |= r0; \
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r4 = ~r4; \
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r1 ^= r2; \
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r2 |= r4; \
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r1 ^= r3; \
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r0 ^= r4; \
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r2 ^= r0; \
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r0 &= r3; \
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r4 ^= r0; \
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r0 |= r1; \
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r0 ^= r2; \
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r3 ^= r4; \
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r2 ^= r1; \
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r3 ^= r0; \
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r3 ^= r1; \
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r2 &= r3; \
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r4 ^= r2; \
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}
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#define S1(i, r0, r1, r2, r3, r4) \
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{ \
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r0 = ~r0; \
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r2 = ~r2; \
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r4 = r0; \
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r0 &= r1; \
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r2 ^= r0; \
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r0 |= r3; \
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r3 ^= r2; \
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r1 ^= r0; \
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r0 ^= r4; \
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r4 |= r1; \
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r1 ^= r3; \
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r2 |= r0; \
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r2 &= r4; \
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r0 ^= r1; \
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r1 &= r2; \
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r1 ^= r0; \
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r0 &= r2; \
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r0 ^= r4; \
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}
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#define I1(i, r0, r1, r2, r3, r4) \
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{ \
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r4 = r1; \
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r1 ^= r3; \
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r3 &= r1; \
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r4 ^= r2; \
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r3 ^= r0; \
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r0 |= r1; \
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r2 ^= r3; \
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r0 ^= r4; \
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r0 |= r2; \
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r1 ^= r3; \
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r0 ^= r1; \
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r1 |= r3; \
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r1 ^= r0; \
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r4 = ~r4; \
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r4 ^= r1; \
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r1 |= r0; \
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r1 ^= r0; \
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r1 |= r4; \
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r3 ^= r1; \
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}
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#define S2(i, r0, r1, r2, r3, r4) \
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{ \
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r4 = r0; \
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r0 &= r2; \
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r0 ^= r3; \
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r2 ^= r1; \
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r2 ^= r0; \
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r3 |= r4; \
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r3 ^= r1; \
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r4 ^= r2; \
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r1 = r3; \
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r3 |= r4; \
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r3 ^= r0; \
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r0 &= r1; \
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r4 ^= r0; \
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r1 ^= r3; \
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r1 ^= r4; \
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r4 = ~r4; \
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}
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#define I2(i, r0, r1, r2, r3, r4) \
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{ \
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r2 ^= r3; \
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r3 ^= r0; \
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r4 = r3; \
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r3 &= r2; \
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r3 ^= r1; \
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r1 |= r2; \
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r1 ^= r4; \
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r4 &= r3; \
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r2 ^= r3; \
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r4 &= r0; \
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r4 ^= r2; \
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r2 &= r1; \
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r2 |= r0; \
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r3 = ~r3; \
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r2 ^= r3; \
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r0 ^= r3; \
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r0 &= r1; \
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r3 ^= r4; \
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r3 ^= r0; \
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}
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#define S3(i, r0, r1, r2, r3, r4) \
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{ \
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r4 = r0; \
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r0 |= r3; \
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r3 ^= r1; \
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r1 &= r4; \
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r4 ^= r2; \
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r2 ^= r3; \
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r3 &= r0; \
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r4 |= r1; \
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r3 ^= r4; \
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r0 ^= r1; \
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r4 &= r0; \
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r1 ^= r3; \
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r4 ^= r2; \
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r1 |= r0; \
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r1 ^= r2; \
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r0 ^= r3; \
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r2 = r1; \
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r1 |= r3; \
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r1 ^= r0; \
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}
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#define I3(i, r0, r1, r2, r3, r4) \
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{ \
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r4 = r2; \
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r2 ^= r1; \
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r1 &= r2; \
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r1 ^= r0; \
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r0 &= r4; \
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r4 ^= r3; \
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r3 |= r1; \
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r3 ^= r2; \
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r0 ^= r4; \
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r2 ^= r0; \
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r0 |= r3; \
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r0 ^= r1; \
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r4 ^= r2; \
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r2 &= r3; \
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r1 |= r3; \
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r1 ^= r2; \
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r4 ^= r0; \
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r2 ^= r4; \
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}
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#define S4(i, r0, r1, r2, r3, r4) \
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{ \
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r1 ^= r3; \
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r3 = ~r3; \
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r2 ^= r3; \
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r3 ^= r0; \
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r4 = r1; \
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r1 &= r3; \
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r1 ^= r2; \
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r4 ^= r3; \
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r0 ^= r4; \
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r2 &= r4; \
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r2 ^= r0; \
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r0 &= r1; \
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r3 ^= r0; \
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r4 |= r1; \
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r4 ^= r0; \
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r0 |= r3; \
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r0 ^= r2; \
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r2 &= r3; \
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r0 = ~r0; \
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r4 ^= r2; \
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}
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#define I4(i, r0, r1, r2, r3, r4) \
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{ \
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r4 = r2; \
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r2 &= r3; \
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r2 ^= r1; \
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r1 |= r3; \
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r1 &= r0; \
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r4 ^= r2; \
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r4 ^= r1; \
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r1 &= r2; \
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r0 = ~r0; \
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r3 ^= r4; \
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r1 ^= r3; \
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r3 &= r0; \
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r3 ^= r2; \
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r0 ^= r1; \
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r2 &= r0; \
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r3 ^= r0; \
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r2 ^= r4; \
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r2 |= r3; \
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r3 ^= r0; \
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r2 ^= r1; \
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}
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#define S5(i, r0, r1, r2, r3, r4) \
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{ \
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r0 ^= r1; \
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r1 ^= r3; \
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r3 = ~r3; \
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r4 = r1; \
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r1 &= r0; \
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r2 ^= r3; \
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r1 ^= r2; \
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r2 |= r4; \
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r4 ^= r3; \
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r3 &= r1; \
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r3 ^= r0; \
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r4 ^= r1; \
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r4 ^= r2; \
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r2 ^= r0; \
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r0 &= r3; \
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r2 = ~r2; \
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r0 ^= r4; \
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r4 |= r3; \
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r2 ^= r4; \
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}
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#define I5(i, r0, r1, r2, r3, r4) \
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{ \
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r1 = ~r1; \
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r4 = r3; \
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r2 ^= r1; \
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r3 |= r0; \
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r3 ^= r2; \
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r2 |= r1; \
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r2 &= r0; \
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r4 ^= r3; \
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r2 ^= r4; \
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r4 |= r0; \
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r4 ^= r1; \
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r1 &= r2; \
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r1 ^= r3; \
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r4 ^= r2; \
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r3 &= r4; \
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r4 ^= r1; \
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r3 ^= r0; \
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r3 ^= r4; \
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r4 = ~r4; \
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}
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#define S6(i, r0, r1, r2, r3, r4) \
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{ \
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r2 = ~r2; \
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r4 = r3; \
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r3 &= r0; \
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r0 ^= r4; \
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r3 ^= r2; \
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r2 |= r4; \
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r1 ^= r3; \
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r2 ^= r0; \
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r0 |= r1; \
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r2 ^= r1; \
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r4 ^= r0; \
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r0 |= r3; \
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r0 ^= r2; \
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r4 ^= r3; \
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r4 ^= r0; \
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r3 = ~r3; \
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r2 &= r4; \
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r2 ^= r3; \
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}
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#define I6(i, r0, r1, r2, r3, r4) \
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{ \
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r0 ^= r2; \
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r4 = r2; \
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r2 &= r0; \
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r4 ^= r3; \
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r2 = ~r2; \
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r3 ^= r1; \
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r2 ^= r3; \
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r4 |= r0; \
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r0 ^= r2; \
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r3 ^= r4; \
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r4 ^= r1; \
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r1 &= r3; \
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r1 ^= r0; \
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r0 ^= r3; \
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r0 |= r2; \
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r3 ^= r1; \
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r4 ^= r0; \
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}
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#define S7(i, r0, r1, r2, r3, r4) \
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{ \
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r4 = r2; \
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r2 &= r1; \
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r2 ^= r3; \
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r3 &= r1; \
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r4 ^= r2; \
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r2 ^= r1; \
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r1 ^= r0; \
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r0 |= r4; \
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r0 ^= r2; \
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r3 ^= r1; \
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r2 ^= r3; \
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r3 &= r0; \
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r3 ^= r4; \
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r4 ^= r2; \
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r2 &= r0; \
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r4 = ~r4; \
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r2 ^= r4; \
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r4 &= r0; \
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r1 ^= r3; \
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r4 ^= r1; \
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}
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#define I7(i, r0, r1, r2, r3, r4) \
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{ \
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r4 = r2; \
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r2 ^= r0; \
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r0 &= r3; \
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r2 = ~r2; \
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r4 |= r3; \
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r3 ^= r1; \
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r1 |= r0; \
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r0 ^= r2; \
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r2 &= r4; \
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r1 ^= r2; \
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r2 ^= r0; \
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r0 |= r2; \
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r3 &= r4; \
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r0 ^= r3; \
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r4 ^= r1; \
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r3 ^= r4; \
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r4 |= r0; \
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r3 ^= r2; \
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r4 ^= r2; \
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}
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// key xor
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#define KX(r, a, b, c, d, e) {\
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a ^= k[4 * r + 0]; \
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b ^= k[4 * r + 1]; \
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c ^= k[4 * r + 2]; \
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d ^= k[4 * r + 3];}
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#define LK(r, a, b, c, d, e) {\
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a = k[(8-r)*4 + 0]; \
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b = k[(8-r)*4 + 1]; \
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c = k[(8-r)*4 + 2]; \
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d = k[(8-r)*4 + 3];}
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#define SK(r, a, b, c, d, e) {\
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k[(8-r)*4 + 4] = a; \
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k[(8-r)*4 + 5] = b; \
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k[(8-r)*4 + 6] = c; \
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k[(8-r)*4 + 7] = d;}
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void Serpent_KeySchedule(word32 *k, unsigned int rounds, const byte *userKey, size_t keylen);
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NAMESPACE_END
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