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/* This is a program which calculates and makes the tables used by
the RNG core
Written by Sam Trenholme
Placed in the public domain 2001.
*/
/* Multiply two elements together for any GF(2^n), where n is less than 30
Input: The two elements to multiply together, the degree to
multiply by, the reducing polynomial for the degree in question
Output: The product of the two elements
*/
int gmul(int i1, int i2, int degree, int field) {
int result = 0;
int counter;
int hibit = 1;
for(counter = 0; counter < degree; counter++)
hibit <<= 1;
for(counter = 0; counter < degree; counter++) {
if((i2 & 1) == 1)
result ^= i1;
i2 >>= 1;
i1 <<= 1;
if((i1 & hibit) == hibit)
i1 ^= field;
}
return result;
}
/* Multiply two elements together in a galois field of 2^8
Input: The two elements to multiply together
Output: The product of the two elements
*/
int mul(int i1, int i2) {
return gmul(i1,i2,8,0x11d);
}
/* Multiply two elements together in the field of 2^4
Input: The two elements to multiply together
Output: The product of the two elements
*/
unsigned char mul_4(unsigned char i1, unsigned char i2) {
return gmul(i1,i2,4,0x13);
}
/* sbox0: give them the value from the original Whirlpool sbox
Input: The byte to calculate the sbox for
Output: The sbox for the byte in question
*/
unsigned char sbox0(unsigned char in) {
unsigned char lsbox[256] = {
0x68, 0xd0, 0xeb, 0x2b, 0x48, 0x9d, 0x6a, 0xe4,
0xe3, 0xa3, 0x56, 0x81, 0x7d, 0xf1, 0x85, 0x9e,
0x2c, 0x8e, 0x78, 0xca, 0x17, 0xa9, 0x61, 0xd5,
0x5d, 0x0b, 0x8c, 0x3c, 0x77, 0x51, 0x22, 0x42,
0x3f, 0x54, 0x41, 0x80, 0xcc, 0x86, 0xb3, 0x18,
0x2e, 0x57, 0x06, 0x62, 0xf4, 0x36, 0xd1, 0x6b,
0x1b, 0x65, 0x75, 0x10, 0xda, 0x49, 0x26, 0xf9,
0xcb, 0x66, 0xe7, 0xba, 0xae, 0x50, 0x52, 0xab,
0x05, 0xf0, 0x0d, 0x73, 0x3b, 0x04, 0x20, 0xfe,
0xdd, 0xf5, 0xb4, 0x5f, 0x0a, 0xb5, 0xc0, 0xa0,
0x71, 0xa5, 0x2d, 0x60, 0x72, 0x93, 0x39, 0x08,
0x83, 0x21, 0x5c, 0x87, 0xb1, 0xe0, 0x00, 0xc3,
0x12, 0x91, 0x8a, 0x02, 0x1c, 0xe6, 0x45, 0xc2,
0xc4, 0xfd, 0xbf, 0x44, 0xa1, 0x4c, 0x33, 0xc5,
0x84, 0x23, 0x7c, 0xb0, 0x25, 0x15, 0x35, 0x69,
0xff, 0x94, 0x4d, 0x70, 0xa2, 0xaf, 0xcd, 0xd6,
0x6c, 0xb7, 0xf8, 0x09, 0xf3, 0x67, 0xa4, 0xea,
0xec, 0xb6, 0xd4, 0xd2, 0x14, 0x1e, 0xe1, 0x24,
0x38, 0xc6, 0xdb, 0x4b, 0x7a, 0x3a, 0xde, 0x5e,
0xdf, 0x95, 0xfc, 0xaa, 0xd7, 0xce, 0x07, 0x0f,
0x3d, 0x58, 0x9a, 0x98, 0x9c, 0xf2, 0xa7, 0x11,
0x7e, 0x8b, 0x43, 0x03, 0xe2, 0xdc, 0xe5, 0xb2,
0x4e, 0xc7, 0x6d, 0xe9, 0x27, 0x40, 0xd8, 0x37,
0x92, 0x8f, 0x01, 0x1d, 0x53, 0x3e, 0x59, 0xc1,
0x4f, 0x32, 0x16, 0xfa, 0x74, 0xfb, 0x63, 0x9f,
0x34, 0x1a, 0x2a, 0x5a, 0x8d, 0xc9, 0xcf, 0xf6,
0x90, 0x28, 0x88, 0x9b, 0x31, 0x0e, 0xbd, 0x4a,
0xe8, 0x96, 0xa6, 0x0c, 0xc8, 0x79, 0xbc, 0xbe,
0xef, 0x6e, 0x46, 0x97, 0x5b, 0xed, 0x19, 0xd9,
0xac, 0x99, 0xa8, 0x29, 0x64, 0x1f, 0xad, 0x55,
0x13, 0xbb, 0xf7, 0x6f, 0xb9, 0x47, 0x2f, 0xee,
0xb8, 0x7b, 0x89, 0x30, 0xd3, 0x7f, 0x76, 0x82
};
return lsbox[in];
}
/* sbox1: Give them the value for the anubis/khazad sbox
Input: The byte to calculate the sbox for
Output: The sbox for the byte in question
*/
unsigned char sbox1(unsigned char in) {
unsigned char lsbox[256] = {
0xa7, 0xd3, 0xe6, 0x71, 0xd0, 0xac, 0x4d, 0x79,
0x3a, 0xc9, 0x91, 0xfc, 0x1e, 0x47, 0x54, 0xbd,
0x8c, 0xa5, 0x7a, 0xfb, 0x63, 0xb8, 0xdd, 0xd4,
0xe5, 0xb3, 0xc5, 0xbe, 0xa9, 0x88, 0x0c, 0xa2,
0x39, 0xdf, 0x29, 0xda, 0x2b, 0xa8, 0xcb, 0x4c,
0x4b, 0x22, 0xaa, 0x24, 0x41, 0x70, 0xa6, 0xf9,
0x5a, 0xe2, 0xb0, 0x36, 0x7d, 0xe4, 0x33, 0xff,
0x60, 0x20, 0x08, 0x8b, 0x5e, 0xab, 0x7f, 0x78,
0x7c, 0x2c, 0x57, 0xd2, 0xdc, 0x6d, 0x7e, 0x0d,
0x53, 0x94, 0xc3, 0x28, 0x27, 0x06, 0x5f, 0xad,
0x67, 0x5c, 0x55, 0x48, 0x0e, 0x52, 0xea, 0x42,
0x5b, 0x5d, 0x30, 0x58, 0x51, 0x59, 0x3c, 0x4e,
0x38, 0x8a, 0x72, 0x14, 0xe7, 0xc6, 0xde, 0x50,
0x8e, 0x92, 0xd1, 0x77, 0x93, 0x45, 0x9a, 0xce,
0x2d, 0x03, 0x62, 0xb6, 0xb9, 0xbf, 0x96, 0x6b,
0x3f, 0x07, 0x12, 0xae, 0x40, 0x34, 0x46, 0x3e,
0xdb, 0xcf, 0xec, 0xcc, 0xc1, 0xa1, 0xc0, 0xd6,
0x1d, 0xf4, 0x61, 0x3b, 0x10, 0xd8, 0x68, 0xa0,
0xb1, 0x0a, 0x69, 0x6c, 0x49, 0xfa, 0x76, 0xc4,
0x9e, 0x9b, 0x6e, 0x99, 0xc2, 0xb7, 0x98, 0xbc,
0x8f, 0x85, 0x1f, 0xb4, 0xf8, 0x11, 0x2e, 0x00,
0x25, 0x1c, 0x2a, 0x3d, 0x05, 0x4f, 0x7b, 0xb2,
0x32, 0x90, 0xaf, 0x19, 0xa3, 0xf7, 0x73, 0x9d,
0x15, 0x74, 0xee, 0xca, 0x9f, 0x0f, 0x1b, 0x75,
0x86, 0x84, 0x9c, 0x4a, 0x97, 0x1a, 0x65, 0xf6,
0xed, 0x09, 0xbb, 0x26, 0x83, 0xeb, 0x6f, 0x81,
0x04, 0x6a, 0x43, 0x01, 0x17, 0xe1, 0x87, 0xf5,
0x8d, 0xe3, 0x23, 0x80, 0x44, 0x16, 0x66, 0x21,
0xfe, 0xd5, 0x31, 0xd9, 0x35, 0x18, 0x02, 0x64,
0xf2, 0xf1, 0x56, 0xcd, 0x82, 0xc8, 0xba, 0xf0,
0xef, 0xe9, 0xe8, 0xfd, 0x89, 0xd7, 0xc7, 0xb5,
0xa4, 0x2f, 0x95, 0x13, 0x0b, 0xf3, 0xe0, 0x37
};
return lsbox[in];
}
/* sbox: calculate, on the fly, the whirlpool tweaked sbox
Input: The byte to calculate the sbox for
Output: The sbox for the byte in question
*/
unsigned char sbox(unsigned char in) {
/* The sboxes */
unsigned char rbox[16] = {0x7,0xc,0xb,0xd,0xe,0x4,0x9,0xf,
0x6,0x3,0x8,0xa,0x2,0x5,0x1,0x0};
unsigned char ebox[16],iebox[16];
/* The two nibbles of this byte */
unsigned char lnib, rnib, ivalue;
int counter;
/* Generate the ebox */
ebox[0] = 1;
for(counter = 1; counter < 15; counter++)
ebox[counter] = mul_4(ebox[counter - 1],0xb) & 0xf;
ebox[0xf] = 0;
/* Generate the inverse ebox */
for(counter = 0; counter < 16; counter++)
iebox[ebox[counter]] = counter;
lnib = (in & 0xf0) >> 4;
rnib = in & 0x0f;
lnib = ebox[lnib];
rnib = iebox[rnib];
ivalue = lnib ^ rnib;
ivalue = rbox[ivalue];
lnib ^= ivalue;
rnib ^= ivalue;
lnib = ebox[lnib];
rnib = iebox[rnib];
return (lnib << 4) | rnib;
}
/* Make one table: Make a single one of the four tables
Input: eight multiply constants, what sbox to use
Output: Displays table on stdout
*/
void one_en_table(int m1, int m2, int m3, int m4,
int m5, int m6, int m7, int m8, int w) {
int counter;
unsigned char s;
for(counter = 0; counter < 256; counter++) {
if(counter % 4 == 0)
printf("\n");
if(w == 1)
s = sbox(counter);
else if(w == 2)
s = sbox0(counter);
else
s = sbox1(counter);
printf("0x%02x%02x%02x%02x%02x%02x%02x%02xLL, ",
mul(s,m1),mul(s,m2),mul(s,m3),mul(s,m4),
mul(s,m5),mul(s,m6),mul(s,m7),mul(s,m8));
}
printf("\n};\n");
}
main(int argc) {
int a[8] = {1,1,3,1,5,8,9,5};
int b,c,t;
printf("/* This file is automatically generated by the program ");
printf("make_64bit_tables.c */\n\n");
/* The s-boxes */
for(c = 0;c < 8; c++) {
printf("static const u64 C%d[256] = {",c);
one_en_table(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],argc);
t = a[7];
for(b = 7; b >= 0; b--)
a[b+1] = a[b];
a[0] = t;
}
/* And the round constants */
printf("static const u64 rc[R + 1] = {\n0x0000000000000000");
for(c = 0; c < 80 ; c++) {
if(c % 8 == 0)
printf("LL,\n0x");
if(argc == 1)
printf("%02x",sbox(c));
else if(argc == 2)
printf("%02x",sbox0(c));
else
printf("%02x",sbox1(c));
}
printf("LL\n};\n");
exit(0);
}
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