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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use buffer::{BufferResult, RefReadBuffer, RefWriteBuffer};
use symmetriccipher::{Encryptor, Decryptor, SynchronousStreamCipher, SymmetricCipherError};
use cryptoutil::{read_u32_le, symm_enc_or_dec, write_u32v_le};
use cryptoutil::copy_memory;
const ALPHA_MUL_TABLE : [u32; 256] =
[
0x00000000, 0xE19FCF13, 0x6B973726, 0x8A08F835,
0xD6876E4C, 0x3718A15F, 0xBD10596A, 0x5C8F9679,
0x05A7DC98, 0xE438138B, 0x6E30EBBE, 0x8FAF24AD,
0xD320B2D4, 0x32BF7DC7, 0xB8B785F2, 0x59284AE1,
0x0AE71199, 0xEB78DE8A, 0x617026BF, 0x80EFE9AC,
0xDC607FD5, 0x3DFFB0C6, 0xB7F748F3, 0x566887E0,
0x0F40CD01, 0xEEDF0212, 0x64D7FA27, 0x85483534,
0xD9C7A34D, 0x38586C5E, 0xB250946B, 0x53CF5B78,
0x1467229B, 0xF5F8ED88, 0x7FF015BD, 0x9E6FDAAE,
0xC2E04CD7, 0x237F83C4, 0xA9777BF1, 0x48E8B4E2,
0x11C0FE03, 0xF05F3110, 0x7A57C925, 0x9BC80636,
0xC747904F, 0x26D85F5C, 0xACD0A769, 0x4D4F687A,
0x1E803302, 0xFF1FFC11, 0x75170424, 0x9488CB37,
0xC8075D4E, 0x2998925D, 0xA3906A68, 0x420FA57B,
0x1B27EF9A, 0xFAB82089, 0x70B0D8BC, 0x912F17AF,
0xCDA081D6, 0x2C3F4EC5, 0xA637B6F0, 0x47A879E3,
0x28CE449F, 0xC9518B8C, 0x435973B9, 0xA2C6BCAA,
0xFE492AD3, 0x1FD6E5C0, 0x95DE1DF5, 0x7441D2E6,
0x2D699807, 0xCCF65714, 0x46FEAF21, 0xA7616032,
0xFBEEF64B, 0x1A713958, 0x9079C16D, 0x71E60E7E,
0x22295506, 0xC3B69A15, 0x49BE6220, 0xA821AD33,
0xF4AE3B4A, 0x1531F459, 0x9F390C6C, 0x7EA6C37F,
0x278E899E, 0xC611468D, 0x4C19BEB8, 0xAD8671AB,
0xF109E7D2, 0x109628C1, 0x9A9ED0F4, 0x7B011FE7,
0x3CA96604, 0xDD36A917, 0x573E5122, 0xB6A19E31,
0xEA2E0848, 0x0BB1C75B, 0x81B93F6E, 0x6026F07D,
0x390EBA9C, 0xD891758F, 0x52998DBA, 0xB30642A9,
0xEF89D4D0, 0x0E161BC3, 0x841EE3F6, 0x65812CE5,
0x364E779D, 0xD7D1B88E, 0x5DD940BB, 0xBC468FA8,
0xE0C919D1, 0x0156D6C2, 0x8B5E2EF7, 0x6AC1E1E4,
0x33E9AB05, 0xD2766416, 0x587E9C23, 0xB9E15330,
0xE56EC549, 0x04F10A5A, 0x8EF9F26F, 0x6F663D7C,
0x50358897, 0xB1AA4784, 0x3BA2BFB1, 0xDA3D70A2,
0x86B2E6DB, 0x672D29C8, 0xED25D1FD, 0x0CBA1EEE,
0x5592540F, 0xB40D9B1C, 0x3E056329, 0xDF9AAC3A,
0x83153A43, 0x628AF550, 0xE8820D65, 0x091DC276,
0x5AD2990E, 0xBB4D561D, 0x3145AE28, 0xD0DA613B,
0x8C55F742, 0x6DCA3851, 0xE7C2C064, 0x065D0F77,
0x5F754596, 0xBEEA8A85, 0x34E272B0, 0xD57DBDA3,
0x89F22BDA, 0x686DE4C9, 0xE2651CFC, 0x03FAD3EF,
0x4452AA0C, 0xA5CD651F, 0x2FC59D2A, 0xCE5A5239,
0x92D5C440, 0x734A0B53, 0xF942F366, 0x18DD3C75,
0x41F57694, 0xA06AB987, 0x2A6241B2, 0xCBFD8EA1,
0x977218D8, 0x76EDD7CB, 0xFCE52FFE, 0x1D7AE0ED,
0x4EB5BB95, 0xAF2A7486, 0x25228CB3, 0xC4BD43A0,
0x9832D5D9, 0x79AD1ACA, 0xF3A5E2FF, 0x123A2DEC,
0x4B12670D, 0xAA8DA81E, 0x2085502B, 0xC11A9F38,
0x9D950941, 0x7C0AC652, 0xF6023E67, 0x179DF174,
0x78FBCC08, 0x9964031B, 0x136CFB2E, 0xF2F3343D,
0xAE7CA244, 0x4FE36D57, 0xC5EB9562, 0x24745A71,
0x7D5C1090, 0x9CC3DF83, 0x16CB27B6, 0xF754E8A5,
0xABDB7EDC, 0x4A44B1CF, 0xC04C49FA, 0x21D386E9,
0x721CDD91, 0x93831282, 0x198BEAB7, 0xF81425A4,
0xA49BB3DD, 0x45047CCE, 0xCF0C84FB, 0x2E934BE8,
0x77BB0109, 0x9624CE1A, 0x1C2C362F, 0xFDB3F93C,
0xA13C6F45, 0x40A3A056, 0xCAAB5863, 0x2B349770,
0x6C9CEE93, 0x8D032180, 0x070BD9B5, 0xE69416A6,
0xBA1B80DF, 0x5B844FCC, 0xD18CB7F9, 0x301378EA,
0x693B320B, 0x88A4FD18, 0x02AC052D, 0xE333CA3E,
0xBFBC5C47, 0x5E239354, 0xD42B6B61, 0x35B4A472,
0x667BFF0A, 0x87E43019, 0x0DECC82C, 0xEC73073F,
0xB0FC9146, 0x51635E55, 0xDB6BA660, 0x3AF46973,
0x63DC2392, 0x8243EC81, 0x084B14B4, 0xE9D4DBA7,
0xB55B4DDE, 0x54C482CD, 0xDECC7AF8, 0x3F53B5EB
];
const ALPHA_DIV_TABLE : [u32; 256] =
[
0x00000000, 0x180F40CD, 0x301E8033, 0x2811C0FE,
0x603CA966, 0x7833E9AB, 0x50222955, 0x482D6998,
0xC078FBCC, 0xD877BB01, 0xF0667BFF, 0xE8693B32,
0xA04452AA, 0xB84B1267, 0x905AD299, 0x88559254,
0x29F05F31, 0x31FF1FFC, 0x19EEDF02, 0x01E19FCF,
0x49CCF657, 0x51C3B69A, 0x79D27664, 0x61DD36A9,
0xE988A4FD, 0xF187E430, 0xD99624CE, 0xC1996403,
0x89B40D9B, 0x91BB4D56, 0xB9AA8DA8, 0xA1A5CD65,
0x5249BE62, 0x4A46FEAF, 0x62573E51, 0x7A587E9C,
0x32751704, 0x2A7A57C9, 0x026B9737, 0x1A64D7FA,
0x923145AE, 0x8A3E0563, 0xA22FC59D, 0xBA208550,
0xF20DECC8, 0xEA02AC05, 0xC2136CFB, 0xDA1C2C36,
0x7BB9E153, 0x63B6A19E, 0x4BA76160, 0x53A821AD,
0x1B854835, 0x038A08F8, 0x2B9BC806, 0x339488CB,
0xBBC11A9F, 0xA3CE5A52, 0x8BDF9AAC, 0x93D0DA61,
0xDBFDB3F9, 0xC3F2F334, 0xEBE333CA, 0xF3EC7307,
0xA492D5C4, 0xBC9D9509, 0x948C55F7, 0x8C83153A,
0xC4AE7CA2, 0xDCA13C6F, 0xF4B0FC91, 0xECBFBC5C,
0x64EA2E08, 0x7CE56EC5, 0x54F4AE3B, 0x4CFBEEF6,
0x04D6876E, 0x1CD9C7A3, 0x34C8075D, 0x2CC74790,
0x8D628AF5, 0x956DCA38, 0xBD7C0AC6, 0xA5734A0B,
0xED5E2393, 0xF551635E, 0xDD40A3A0, 0xC54FE36D,
0x4D1A7139, 0x551531F4, 0x7D04F10A, 0x650BB1C7,
0x2D26D85F, 0x35299892, 0x1D38586C, 0x053718A1,
0xF6DB6BA6, 0xEED42B6B, 0xC6C5EB95, 0xDECAAB58,
0x96E7C2C0, 0x8EE8820D, 0xA6F942F3, 0xBEF6023E,
0x36A3906A, 0x2EACD0A7, 0x06BD1059, 0x1EB25094,
0x569F390C, 0x4E9079C1, 0x6681B93F, 0x7E8EF9F2,
0xDF2B3497, 0xC724745A, 0xEF35B4A4, 0xF73AF469,
0xBF179DF1, 0xA718DD3C, 0x8F091DC2, 0x97065D0F,
0x1F53CF5B, 0x075C8F96, 0x2F4D4F68, 0x37420FA5,
0x7F6F663D, 0x676026F0, 0x4F71E60E, 0x577EA6C3,
0xE18D0321, 0xF98243EC, 0xD1938312, 0xC99CC3DF,
0x81B1AA47, 0x99BEEA8A, 0xB1AF2A74, 0xA9A06AB9,
0x21F5F8ED, 0x39FAB820, 0x11EB78DE, 0x09E43813,
0x41C9518B, 0x59C61146, 0x71D7D1B8, 0x69D89175,
0xC87D5C10, 0xD0721CDD, 0xF863DC23, 0xE06C9CEE,
0xA841F576, 0xB04EB5BB, 0x985F7545, 0x80503588,
0x0805A7DC, 0x100AE711, 0x381B27EF, 0x20146722,
0x68390EBA, 0x70364E77, 0x58278E89, 0x4028CE44,
0xB3C4BD43, 0xABCBFD8E, 0x83DA3D70, 0x9BD57DBD,
0xD3F81425, 0xCBF754E8, 0xE3E69416, 0xFBE9D4DB,
0x73BC468F, 0x6BB30642, 0x43A2C6BC, 0x5BAD8671,
0x1380EFE9, 0x0B8FAF24, 0x239E6FDA, 0x3B912F17,
0x9A34E272, 0x823BA2BF, 0xAA2A6241, 0xB225228C,
0xFA084B14, 0xE2070BD9, 0xCA16CB27, 0xD2198BEA,
0x5A4C19BE, 0x42435973, 0x6A52998D, 0x725DD940,
0x3A70B0D8, 0x227FF015, 0x0A6E30EB, 0x12617026,
0x451FD6E5, 0x5D109628, 0x750156D6, 0x6D0E161B,
0x25237F83, 0x3D2C3F4E, 0x153DFFB0, 0x0D32BF7D,
0x85672D29, 0x9D686DE4, 0xB579AD1A, 0xAD76EDD7,
0xE55B844F, 0xFD54C482, 0xD545047C, 0xCD4A44B1,
0x6CEF89D4, 0x74E0C919, 0x5CF109E7, 0x44FE492A,
0x0CD320B2, 0x14DC607F, 0x3CCDA081, 0x24C2E04C,
0xAC977218, 0xB49832D5, 0x9C89F22B, 0x8486B2E6,
0xCCABDB7E, 0xD4A49BB3, 0xFCB55B4D, 0xE4BA1B80,
0x17566887, 0x0F59284A, 0x2748E8B4, 0x3F47A879,
0x776AC1E1, 0x6F65812C, 0x477441D2, 0x5F7B011F,
0xD72E934B, 0xCF21D386, 0xE7301378, 0xFF3F53B5,
0xB7123A2D, 0xAF1D7AE0, 0x870CBA1E, 0x9F03FAD3,
0x3EA637B6, 0x26A9777B, 0x0EB8B785, 0x16B7F748,
0x5E9A9ED0, 0x4695DE1D, 0x6E841EE3, 0x768B5E2E,
0xFEDECC7A, 0xE6D18CB7, 0xCEC04C49, 0xD6CF0C84,
0x9EE2651C, 0x86ED25D1, 0xAEFCE52F, 0xB6F3A5E2
];
#[derive(Copy)]
pub struct Sosemanuk {
lfsr: [u32; 10],
fsm_r: [u32; 2],
subkeys: [u32; 100],
output: [u8; 80],
offset: u32
}
impl Clone for Sosemanuk { fn clone(&self) -> Sosemanuk { *self } }
impl Sosemanuk {
pub fn new(key: &[u8], nonce: &[u8]) -> Sosemanuk {
let mut sosemanuk = Sosemanuk { lfsr: [0; 10], fsm_r: [0; 2], subkeys: [0; 100], output: [0; 80], offset: 80 };
assert!(key.len() <= 32);
assert!(nonce.len() <= 16);
key_setup(&key, &mut sosemanuk.subkeys);
iv_setup(&nonce, &mut sosemanuk.subkeys, &mut sosemanuk.lfsr, &mut sosemanuk.fsm_r);
sosemanuk
}
fn advance_state(&mut self) {
let mut s0 = self.lfsr[0];
let mut s1 = self.lfsr[1];
let mut s2 = self.lfsr[2];
let mut s3 = self.lfsr[3];
let mut s4 = self.lfsr[4];
let mut s5 = self.lfsr[5];
let mut s6 = self.lfsr[6];
let mut s7 = self.lfsr[7];
let mut s8 = self.lfsr[8];
let mut s9 = self.lfsr[9];
let mut r1 = self.fsm_r[0];
let mut r2 = self.fsm_r[1];
let mut f0 : u32;
let mut f1 : u32;
let mut f2 : u32;
let mut f3 : u32;
let mut f4 : u32;
let mut v0 : u32;
let mut v1 : u32;
let mut v2 : u32;
let mut v3 : u32;
let mut tt : u32;
let ref mul_alpha = ALPHA_MUL_TABLE;
let ref div_alpha = ALPHA_DIV_TABLE;
tt = r1;
//r1 = r2 + (s1 ^ ((r1 & 0x01) != 0 ? s8 : 0));
r1 = r2.wrapping_add(s1 ^ match r1 & 0x01 {
0 => 0,
_ => s8
});
r2 = tt.wrapping_mul(0x54655307).rotate_left(7);
v0 = s0;
s0 = ((s0 << 8) ^ mul_alpha[s0 as usize >> 24])
^ ((s3 >> 8) ^ div_alpha[s3 as usize & 0xFF]) ^ s9;
f0 = s9.wrapping_add(r1) ^ r2;
tt = r1;
//r1 = r2 + (s2 ^ ((r1 & 0x01) != 0 ? s9 : 0));
r1 = r2.wrapping_add(s2 ^ match r1 & 0x01 {
0 => 0,
_ => s9
});
r2 = tt.wrapping_mul(0x54655307).rotate_left(7);
v1 = s1;
s1 = ((s1 << 8) ^ mul_alpha[s1 as usize >> 24])
^ ((s4 >> 8) ^ div_alpha[s4 as usize & 0xFF]) ^ s0;
f1 = s0.wrapping_add(r1) ^ r2;
tt = r1;
//r1 = r2 + (s3 ^ ((r1 & 0x01) != 0 ? s0 : 0));
r1 = r2.wrapping_add(s3 ^ match r1 & 0x01 {
0 => 0,
_ => s0
});
r2 = tt.wrapping_mul(0x54655307).rotate_left(7);
v2 = s2;
s2 = ((s2 << 8) ^ mul_alpha[s2 as usize >> 24])
^ ((s5 >> 8) ^ div_alpha[s5 as usize & 0xFF]) ^ s1;
f2 = s1.wrapping_add(r1) ^ r2;
tt = r1;
//r1 = r2 + (s4 ^ ((r1 & 0x01) != 0 ? s1 : 0));
r1 = r2.wrapping_add(s4 ^ match r1 & 0x01 {
0 => 0,
_ => s1
});
r2 = tt.wrapping_mul(0x54655307).rotate_left(7);
v3 = s3;
s3 = ((s3 << 8) ^ mul_alpha[s3 as usize >> 24])
^ ((s6 >> 8) ^ div_alpha[s6 as usize & 0xFF]) ^ s2;
f3 = s2.wrapping_add(r1) ^ r2;
/*
* Apply the third S-box (number 2) on (f3, f2, f1, f0).
*/
f4 = f0;
f0 &= f2;
f0 ^= f3;
f2 ^= f1;
f2 ^= f0;
f3 |= f4;
f3 ^= f1;
f4 ^= f2;
f1 = f3;
f3 |= f4;
f3 ^= f0;
f0 &= f1;
f4 ^= f0;
f1 ^= f3;
f1 ^= f4;
f4 = !f4;
/*
* S-box result is in (f2, f3, f1, f4).
*/
let sbox_res = [(f2 ^ v0), (f3 ^ v1), (f1 ^ v2), (f4 ^ v3)];
write_u32v_le(&mut self.output[0..16], &sbox_res);
tt = r1;
//r1 = r2 + (s5 ^ ((r1 & 0x01) != 0 ? s2 : 0));
r1 = r2.wrapping_add(s5 ^ match r1 & 0x01 {
0 => 0,
_ => s2
});
r2 = tt.wrapping_mul(0x54655307).rotate_left(7);
v0 = s4;
s4 = ((s4 << 8) ^ mul_alpha[s4 as usize >> 24])
^ ((s7 >> 8) ^ div_alpha[s7 as usize & 0xFF]) ^ s3;
f0 = s3.wrapping_add(r1) ^ r2;
tt = r1;
//r1 = r2 + (s6 ^ ((r1 & 0x01) != 0 ? s3 : 0));
r1 = r2.wrapping_add(s6 ^ match r1 & 0x01 {
0 => 0,
_ => s3
});
r2 = tt.wrapping_mul(0x54655307).rotate_left(7);
v1 = s5;
s5 = ((s5 << 8) ^ mul_alpha[s5 as usize >> 24])
^ ((s8 >> 8) ^ div_alpha[s8 as usize & 0xFF]) ^ s4;
f1 = s4.wrapping_add(r1) ^ r2;
tt = r1;
//r1 = r2 + (s7 ^ ((r1 & 0x01) != 0 ? s4 : 0));
r1 = r2.wrapping_add(s7 ^ match r1 & 0x01 {
0 => 0,
_ => s4
});
r2 = tt.wrapping_mul(0x54655307).rotate_left(7);
v2 = s6;
s6 = ((s6 << 8) ^ mul_alpha[s6 as usize >> 24])
^ ((s9 >> 8) ^ div_alpha[s9 as usize & 0xFF]) ^ s5;
f2 = s5.wrapping_add(r1) ^ r2;
tt = r1;
//r1 = r2 + (s8 ^ ((r1 & 0x01) != 0 ? s5 : 0));
r1 = r2.wrapping_add(s8 ^ match r1 & 0x01 {
0 => 0,
_ => s5
});
r2 = tt.wrapping_mul(0x54655307).rotate_left(7);
v3 = s7;
s7 = ((s7 << 8) ^ mul_alpha[s7 as usize >> 24])
^ ((s0 >> 8) ^ div_alpha[s0 as usize & 0xFF]) ^ s6;
f3 = s6.wrapping_add(r1) ^ r2;
/*
* Apply the third S-box (number 2) on (f3, f2, f1, f0).
*/
f4 = f0;
f0 &= f2;
f0 ^= f3;
f2 ^= f1;
f2 ^= f0;
f3 |= f4;
f3 ^= f1;
f4 ^= f2;
f1 = f3;
f3 |= f4;
f3 ^= f0;
f0 &= f1;
f4 ^= f0;
f1 ^= f3;
f1 ^= f4;
f4 = !f4;
/*
* S-box result is in (f2, f3, f1, f4).
*/
let sbox_res = [(f2 ^ v0), (f3 ^ v1), (f1 ^ v2), (f4 ^ v3)];
write_u32v_le(&mut self.output[16..32], &sbox_res);
tt = r1;
//r1 = r2 + (s9 ^ ((r1 & 0x01) != 0 ? s6 : 0));
r1 = r2.wrapping_add(s9 ^ match r1 & 0x01 {
0 => 0,
_ => s6
});
r2 = tt.wrapping_mul(0x54655307).rotate_left(7);
v0 = s8;
s8 = ((s8 << 8) ^ mul_alpha[s8 as usize >> 24])
^ ((s1 >> 8) ^ div_alpha[s1 as usize & 0xFF]) ^ s7;
f0 = s7.wrapping_add(r1) ^ r2;
tt = r1;
//r1 = r2 + (s0 ^ ((r1 & 0x01) != 0 ? s7 : 0));
r1 = r2.wrapping_add(s0 ^ match r1 & 0x01 {
0 => 0,
_ => s7
});
r2 = tt.wrapping_mul(0x54655307).rotate_left(7);
v1 = s9;
s9 = ((s9 << 8) ^ mul_alpha[s9 as usize >> 24])
^ ((s2 >> 8) ^ div_alpha[s2 as usize & 0xFF]) ^ s8;
f1 = s8.wrapping_add(r1) ^ r2;
tt = r1;
//r1 = r2 + (s1 ^ ((r1 & 0x01) != 0 ? s8 : 0));
r1 = r2.wrapping_add(s1 ^ match r1 & 0x01 {
0 => 0,
_ => s8
});
r2 = tt.wrapping_mul(0x54655307).rotate_left(7);
v2 = s0;
s0 = ((s0 << 8) ^ mul_alpha[s0 as usize >> 24])
^ ((s3 >> 8) ^ div_alpha[s3 as usize & 0xFF]) ^ s9;
f2 = s9.wrapping_add(r1) ^ r2;
tt = r1;
//r1 = r2 + (s2 ^ ((r1 & 0x01) != 0 ? s9 : 0));
r1 = r2.wrapping_add(s2 ^ match r1 & 0x01 {
0 => 0,
_ => s9
});
r2 = tt.wrapping_mul(0x54655307).rotate_left(7);
v3 = s1;
s1 = ((s1 << 8) ^ mul_alpha[s1 as usize >> 24])
^ ((s4 >> 8) ^ div_alpha[s4 as usize & 0xFF]) ^ s0;
f3 = s0.wrapping_add(r1) ^ r2;
/*
* Apply the third S-box (number 2) on (f3, f2, f1, f0).
*/
f4 = f0;
f0 &= f2;
f0 ^= f3;
f2 ^= f1;
f2 ^= f0;
f3 |= f4;
f3 ^= f1;
f4 ^= f2;
f1 = f3;
f3 |= f4;
f3 ^= f0;
f0 &= f1;
f4 ^= f0;
f1 ^= f3;
f1 ^= f4;
f4 = !f4;
/*
* S-box result is in (f2, f3, f1, f4).
*/
let sbox_res = [(f2 ^ v0), (f3 ^ v1), (f1 ^ v2), (f4 ^ v3)];
write_u32v_le(&mut self.output[32..48], &sbox_res);
tt = r1;
//r1 = r2 + (s3 ^ ((r1 & 0x01) != 0 ? s0 : 0));
r1 = r2.wrapping_add(s3 ^ match r1 & 0x01 {
0 => 0,
_ => s0
});
r2 = tt.wrapping_mul(0x54655307).rotate_left(7);
v0 = s2;
s2 = ((s2 << 8) ^ mul_alpha[s2 as usize >> 24])
^ ((s5 >> 8) ^ div_alpha[s5 as usize & 0xFF]) ^ s1;
f0 = s1.wrapping_add(r1) ^ r2;
tt = r1;
//r1 = r2 + (s4 ^ ((r1 & 0x01) != 0 ? s1 : 0));
r1 = r2.wrapping_add(s4 ^ match r1 & 0x01 {
0 => 0,
_ => s1
});
r2 = tt.wrapping_mul(0x54655307).rotate_left(7);
v1 = s3;
s3 = ((s3 << 8) ^ mul_alpha[s3 as usize >> 24])
^ ((s6 >> 8) ^ div_alpha[s6 as usize & 0xFF]) ^ s2;
f1 = s2.wrapping_add(r1) ^ r2;
tt = r1;
//r1 = r2 + (s5 ^ ((r1 & 0x01) != 0 ? s2 : 0));
r1 = r2.wrapping_add(s5 ^ match r1 & 0x01 {
0 => 0,
_ => s2
});
r2 = tt.wrapping_mul(0x54655307).rotate_left(7);
v2 = s4;
s4 = ((s4 << 8) ^ mul_alpha[s4 as usize >> 24])
^ ((s7 >> 8) ^ div_alpha[s7 as usize & 0xFF]) ^ s3;
f2 = s3.wrapping_add(r1) ^ r2;
tt = r1;
//r1 = r2 + (s6 ^ ((r1 & 0x01) != 0 ? s3 : 0));
r1 = r2.wrapping_add(s6 ^ match r1 & 0x01 {
0 => 0,
_ => s3
});
r2 = tt.wrapping_mul(0x54655307).rotate_left(7);
v3 = s5;
s5 = ((s5 << 8) ^ mul_alpha[s5 as usize >> 24])
^ ((s8 >> 8) ^ div_alpha[s8 as usize & 0xFF]) ^ s4;
f3 = s4.wrapping_add(r1) ^ r2;
/*
* Apply the third S-box (number 2) on (f3, f2, f1, f0).
*/
f4 = f0;
f0 &= f2;
f0 ^= f3;
f2 ^= f1;
f2 ^= f0;
f3 |= f4;
f3 ^= f1;
f4 ^= f2;
f1 = f3;
f3 |= f4;
f3 ^= f0;
f0 &= f1;
f4 ^= f0;
f1 ^= f3;
f1 ^= f4;
f4 = !f4;
/*
* S-box result is in (f2, f3, f1, f4).
*/
let sbox_res = [(f2 ^ v0), (f3 ^ v1), (f1 ^ v2), (f4 ^ v3)];
write_u32v_le(&mut self.output[48..64], &sbox_res);
tt = r1;
//r1 = r2 + (s7 ^ ((r1 & 0x01) != 0 ? s4 : 0));
r1 = r2.wrapping_add(s7 ^ match r1 & 0x01 {
0 => 0,
_ => s4
});
r2 = tt.wrapping_mul(0x54655307).rotate_left(7);
v0 = s6;
s6 = ((s6 << 8) ^ mul_alpha[s6 as usize >> 24])
^ ((s9 >> 8) ^ div_alpha[s9 as usize & 0xFF]) ^ s5;
f0 = s5.wrapping_add(r1) ^ r2;
tt = r1;
//r1 = r2 + (s8 ^ ((r1 & 0x01) != 0 ? s5 : 0));
r1 = r2.wrapping_add(s8 ^ match r1 & 0x01 {
0 => 0,
_ => s5
});
r2 = tt.wrapping_mul(0x54655307).rotate_left(7);
v1 = s7;
s7 = ((s7 << 8) ^ mul_alpha[s7 as usize >> 24])
^ ((s0 >> 8) ^ div_alpha[s0 as usize & 0xFF]) ^ s6;
f1 = s6.wrapping_add(r1) ^ r2;
tt = r1;
//r1 = r2 + (s9 ^ ((r1 & 0x01) != 0 ? s6 : 0));
r1 = r2.wrapping_add(s9 ^ match r1 & 0x01 {
0 => 0,
_ => s6
});
r2 = tt.wrapping_mul(0x54655307).rotate_left(7);
v2 = s8;
s8 = ((s8 << 8) ^ mul_alpha[s8 as usize >> 24])
^ ((s1 >> 8) ^ div_alpha[s1 as usize & 0xFF]) ^ s7;
f2 = s7.wrapping_add(r1) ^ r2;
tt = r1;
//r1 = r2 + (s0 ^ ((r1 & 0x01) != 0 ? s7 : 0));
r1 = r2.wrapping_add(s0 ^ match r1 & 0x01 {
0 => 0,
_ => s7
});
r2 = tt.wrapping_mul(0x54655307).rotate_left(7);
v3 = s9;
s9 = ((s9 << 8) ^ mul_alpha[s9 as usize >> 24])
^ ( ( s2 >> 8) ^ div_alpha[s2 as usize & 0xFF]) ^ s8;
f3 = s8.wrapping_add(r1) ^ r2;
/*
* Apply the third S-box (number 2) on (f3, f2, f1, f0).
*/
f4 = f0;
f0 &= f2;
f0 ^= f3;
f2 ^= f1;
f2 ^= f0;
f3 |= f4;
f3 ^= f1;
f4 ^= f2;
f1 = f3;
f3 |= f4;
f3 ^= f0;
f0 &= f1;
f4 ^= f0;
f1 ^= f3;
f1 ^= f4;
f4 = !f4;
/*
* S-box result is in (f2, f3, f1, f4).
*/
let sbox_res = [(f2 ^ v0), (f3 ^ v1), (f1 ^ v2), (f4 ^ v3)];
write_u32v_le(&mut self.output[64..80], &sbox_res);
self.lfsr[0] = s0;
self.lfsr[1] = s1;
self.lfsr[2] = s2;
self.lfsr[3] = s3;
self.lfsr[4] = s4;
self.lfsr[5] = s5;
self.lfsr[6] = s6;
self.lfsr[7] = s7;
self.lfsr[8] = s8;
self.lfsr[9] = s9;
self.fsm_r[0] = r1;
self.fsm_r[1] = r2;
self.offset = 0;
}
fn next(&mut self) -> u8 {
if self.offset == 80 {
self.advance_state();
}
let ret = self.output[self.offset as usize];
self.offset += 1;
ret
}
}
fn key_setup(key : &[u8], subkeys : &mut[u32; 100]) {
let mut full_key : [u8; 32] = [0; 32];
if key.len() < 32 {
copy_memory(&key, &mut full_key[0..key.len()]);
full_key[key.len()] = 0x01;
} else {
copy_memory(&key[0..32], &mut full_key[0..32]);
}
let mut w0 = read_u32_le(&full_key[0..4]);
let mut w1 = read_u32_le(&full_key[4..8]);
let mut w2 = read_u32_le(&full_key[8..12]);
let mut w3 = read_u32_le(&full_key[12..16]);
let mut w4 = read_u32_le(&full_key[16..20]);
let mut w5 = read_u32_le(&full_key[20..24]);
let mut w6 = read_u32_le(&full_key[24..28]);
let mut w7 = read_u32_le(&full_key[28..32]);
let mut r0 : u32;
let mut r1 : u32;
let mut r2 : u32;
let mut r3 : u32;
let mut r4 : u32;
let mut tt : u32;
let mut i = 0;
tt = w0 ^ w3 ^ w5 ^ w7 ^ (0x9E3779B9 ^ (0));
w0 = tt.rotate_left(11);
tt = w1 ^ w4 ^ w6 ^ w0 ^ (0x9E3779B9 ^ (0 + 1));
w1 = tt.rotate_left(11);
tt = w2 ^ w5 ^ w7 ^ w1 ^ (0x9E3779B9 ^ (0 + 2));
w2 = tt.rotate_left(11);
tt = w3 ^ w6 ^ w0 ^ w2 ^ (0x9E3779B9 ^ (0 + 3));
w3 = tt.rotate_left(11);
r0 = w0;
r1 = w1;
r2 = w2;
r3 = w3;
r4 = r0;
r0 |= r3;
r3 ^= r1;
r1 &= r4;
r4 ^= r2;
r2 ^= r3;
r3 &= r0;
r4 |= r1;
r3 ^= r4;
r0 ^= r1;
r4 &= r0;
r1 ^= r3;
r4 ^= r2;
r1 |= r0;
r1 ^= r2;
r0 ^= r3;
r2 = r1;
r1 |= r3;
r1 ^= r0;
subkeys[i] = r1; i+=1;
subkeys[i] = r2; i+=1;
subkeys[i] = r3; i+=1;
subkeys[i] = r4; i+=1;
tt = w4 ^ w7 ^ w1 ^ w3 ^ (0x9E3779B9 ^ (4));
w4 = tt.rotate_left(11);
tt = w5 ^ w0 ^ w2 ^ w4 ^ (0x9E3779B9 ^ (4 + 1));
w5 = tt.rotate_left(11);
tt = w6 ^ w1 ^ w3 ^ w5 ^ (0x9E3779B9 ^ (4 + 2));
w6 = tt.rotate_left(11);
tt = w7 ^ w2 ^ w4 ^ w6 ^ (0x9E3779B9 ^ (4 + 3));
w7 = tt.rotate_left(11);
r0 = w4;
r1 = w5;
r2 = w6;
r3 = w7;
r4 = r0;
r0 &= r2;
r0 ^= r3;
r2 ^= r1;
r2 ^= r0;
r3 |= r4;
r3 ^= r1;
r4 ^= r2;
r1 = r3;
r3 |= r4;
r3 ^= r0;
r0 &= r1;
r4 ^= r0;
r1 ^= r3;
r1 ^= r4;
r4 = !r4;
subkeys[i] = r2; i+=1;
subkeys[i] = r3; i+=1;
subkeys[i] = r1; i+=1;
subkeys[i] = r4; i+=1;
tt = w0 ^ w3 ^ w5 ^ w7 ^ (0x9E3779B9 ^ (8));
w0 = tt.rotate_left(11);
tt = w1 ^ w4 ^ w6 ^ w0 ^ (0x9E3779B9 ^ (8 + 1));
w1 = tt.rotate_left(11);
tt = w2 ^ w5 ^ w7 ^ w1 ^ (0x9E3779B9 ^ (8 + 2));
w2 = tt.rotate_left(11);
tt = w3 ^ w6 ^ w0 ^ w2 ^ (0x9E3779B9 ^ (8 + 3));
w3 = tt.rotate_left(11);
r0 = w0;
r1 = w1;
r2 = w2;
r3 = w3;
r0 = !r0;
r2 = !r2;
r4 = r0;
r0 &= r1;
r2 ^= r0;
r0 |= r3;
r3 ^= r2;
r1 ^= r0;
r0 ^= r4;
r4 |= r1;
r1 ^= r3;
r2 |= r0;
r2 &= r4;
r0 ^= r1;
r1 &= r2;
r1 ^= r0;
r0 &= r2;
r0 ^= r4;
subkeys[i] = r2; i+=1;
subkeys[i] = r0; i+=1;
subkeys[i] = r3; i+=1;
subkeys[i] = r1; i+=1;
tt = w4 ^ w7 ^ w1 ^ w3 ^ (0x9E3779B9 ^ (12));
w4 = tt.rotate_left(11);
tt = w5 ^ w0 ^ w2 ^ w4 ^ (0x9E3779B9 ^ (12 + 1));
w5 = tt.rotate_left(11);
tt = w6 ^ w1 ^ w3 ^ w5 ^ (0x9E3779B9 ^ (12 + 2));
w6 = tt.rotate_left(11);
tt = w7 ^ w2 ^ w4 ^ w6 ^ (0x9E3779B9 ^ (12 + 3));
w7 = tt.rotate_left(11);
r0 = w4;
r1 = w5;
r2 = w6;
r3 = w7;
r3 ^= r0;
r4 = r1;
r1 &= r3;
r4 ^= r2;
r1 ^= r0;
r0 |= r3;
r0 ^= r4;
r4 ^= r3;
r3 ^= r2;
r2 |= r1;
r2 ^= r4;
r4 = !r4;
r4 |= r1;
r1 ^= r3;
r1 ^= r4;
r3 |= r0;
r1 ^= r3;
r4 ^= r3;
subkeys[i] = r1; i+=1;
subkeys[i] = r4; i+=1;
subkeys[i] = r2; i+=1;
subkeys[i] = r0; i+=1;
tt = w0 ^ w3 ^ w5 ^ w7 ^ (0x9E3779B9 ^ (16));
w0 = tt.rotate_left(11);
tt = w1 ^ w4 ^ w6 ^ w0 ^ (0x9E3779B9 ^ (16 + 1));
w1 = tt.rotate_left(11);
tt = w2 ^ w5 ^ w7 ^ w1 ^ (0x9E3779B9 ^ (16 + 2));
w2 = tt.rotate_left(11);
tt = w3 ^ w6 ^ w0 ^ w2 ^ (0x9E3779B9 ^ (16 + 3));
w3 = tt.rotate_left(11);
r0 = w0;
r1 = w1;
r2 = w2;
r3 = w3;
r4 = r1;
r1 |= r2;
r1 ^= r3;
r4 ^= r2;
r2 ^= r1;
r3 |= r4;
r3 &= r0;
r4 ^= r2;
r3 ^= r1;
r1 |= r4;
r1 ^= r0;
r0 |= r4;
r0 ^= r2;
r1 ^= r4;
r2 ^= r1;
r1 &= r0;
r1 ^= r4;
r2 = !r2;
r2 |= r0;
r4 ^= r2;
subkeys[i] = r4; i+=1;
subkeys[i] = r3; i+=1;
subkeys[i] = r1; i+=1;
subkeys[i] = r0; i+=1;
tt = w4 ^ w7 ^ w1 ^ w3 ^ (0x9E3779B9 ^ (20));
w4 = tt.rotate_left(11);
tt = w5 ^ w0 ^ w2 ^ w4 ^ (0x9E3779B9 ^ (20 + 1));
w5 = tt.rotate_left(11);
tt = w6 ^ w1 ^ w3 ^ w5 ^ (0x9E3779B9 ^ (20 + 2));
w6 = tt.rotate_left(11);
tt = w7 ^ w2 ^ w4 ^ w6 ^ (0x9E3779B9 ^ (20 + 3));
w7 = tt.rotate_left(11);
r0 = w4;
r1 = w5;
r2 = w6;
r3 = w7;
r2 = !r2;
r4 = r3;
r3 &= r0;
r0 ^= r4;
r3 ^= r2;
r2 |= r4;
r1 ^= r3;
r2 ^= r0;
r0 |= r1;
r2 ^= r1;
r4 ^= r0;
r0 |= r3;
r0 ^= r2;
r4 ^= r3;
r4 ^= r0;
r3 = !r3;
r2 &= r4;
r2 ^= r3;
subkeys[i] = r0; i+=1;
subkeys[i] = r1; i+=1;
subkeys[i] = r4; i+=1;
subkeys[i] = r2; i+=1;
tt = w0 ^ w3 ^ w5 ^ w7 ^ (0x9E3779B9 ^ (24));
w0 = tt.rotate_left(11);
tt = w1 ^ w4 ^ w6 ^ w0 ^ (0x9E3779B9 ^ (24 + 1));
w1 = tt.rotate_left(11);
tt = w2 ^ w5 ^ w7 ^ w1 ^ (0x9E3779B9 ^ (24 + 2));
w2 = tt.rotate_left(11);
tt = w3 ^ w6 ^ w0 ^ w2 ^ (0x9E3779B9 ^ (24 + 3));
w3 = tt.rotate_left(11);
r0 = w0;
r1 = w1;
r2 = w2;
r3 = w3;
r0 ^= r1;
r1 ^= r3;
r3 = !r3;
r4 = r1;
r1 &= r0;
r2 ^= r3;
r1 ^= r2;
r2 |= r4;
r4 ^= r3;
r3 &= r1;
r3 ^= r0;
r4 ^= r1;
r4 ^= r2;
r2 ^= r0;
r0 &= r3;
r2 = !r2;
r0 ^= r4;
r4 |= r3;
r2 ^= r4;
subkeys[i] = r1; i+=1;
subkeys[i] = r3; i+=1;
subkeys[i] = r0; i+=1;
subkeys[i] = r2; i+=1;
tt = w4 ^ w7 ^ w1 ^ w3 ^ (0x9E3779B9 ^ (28));
w4 = tt.rotate_left(11);
tt = w5 ^ w0 ^ w2 ^ w4 ^ (0x9E3779B9 ^ (28 + 1));
w5 = tt.rotate_left(11);
tt = w6 ^ w1 ^ w3 ^ w5 ^ (0x9E3779B9 ^ (28 + 2));
w6 = tt.rotate_left(11);
tt = w7 ^ w2 ^ w4 ^ w6 ^ (0x9E3779B9 ^ (28 + 3));
w7 = tt.rotate_left(11);
r0 = w4;
r1 = w5;
r2 = w6;
r3 = w7;
r1 ^= r3;
r3 = !r3;
r2 ^= r3;
r3 ^= r0;
r4 = r1;
r1 &= r3;
r1 ^= r2;
r4 ^= r3;
r0 ^= r4;
r2 &= r4;
r2 ^= r0;
r0 &= r1;
r3 ^= r0;
r4 |= r1;
r4 ^= r0;
r0 |= r3;
r0 ^= r2;
r2 &= r3;
r0 = !r0;
r4 ^= r2;
subkeys[i] = r1; i+=1;
subkeys[i] = r4; i+=1;
subkeys[i] = r0; i+=1;
subkeys[i] = r3; i+=1;
tt = w0 ^ w3 ^ w5 ^ w7 ^ (0x9E3779B9 ^ (32));
w0 = tt.rotate_left(11);
tt = w1 ^ w4 ^ w6 ^ w0 ^ (0x9E3779B9 ^ (32 + 1));
w1 = tt.rotate_left(11);
tt = w2 ^ w5 ^ w7 ^ w1 ^ (0x9E3779B9 ^ (32 + 2));
w2 = tt.rotate_left(11);
tt = w3 ^ w6 ^ w0 ^ w2 ^ (0x9E3779B9 ^ (32 + 3));
w3 = tt.rotate_left(11);
r0 = w0;
r1 = w1;
r2 = w2;
r3 = w3;
r4 = r0;
r0 |= r3;
r3 ^= r1;
r1 &= r4;
r4 ^= r2;
r2 ^= r3;
r3 &= r0;
r4 |= r1;
r3 ^= r4;
r0 ^= r1;
r4 &= r0;
r1 ^= r3;
r4 ^= r2;
r1 |= r0;
r1 ^= r2;
r0 ^= r3;
r2 = r1;
r1 |= r3;
r1 ^= r0;
subkeys[i] = r1; i+=1;
subkeys[i] = r2; i+=1;
subkeys[i] = r3; i+=1;
subkeys[i] = r4; i+=1;
tt = w4 ^ w7 ^ w1 ^ w3 ^ (0x9E3779B9 ^ (36));
w4 = tt.rotate_left(11);
tt = w5 ^ w0 ^ w2 ^ w4 ^ (0x9E3779B9 ^ (36 + 1));
w5 = tt.rotate_left(11);
tt = w6 ^ w1 ^ w3 ^ w5 ^ (0x9E3779B9 ^ (36 + 2));
w6 = tt.rotate_left(11);
tt = w7 ^ w2 ^ w4 ^ w6 ^ (0x9E3779B9 ^ (36 + 3));
w7 = tt.rotate_left(11);
r0 = w4;
r1 = w5;
r2 = w6;
r3 = w7;
r4 = r0;
r0 &= r2;
r0 ^= r3;
r2 ^= r1;
r2 ^= r0;
r3 |= r4;
r3 ^= r1;
r4 ^= r2;
r1 = r3;
r3 |= r4;
r3 ^= r0;
r0 &= r1;
r4 ^= r0;
r1 ^= r3;
r1 ^= r4;
r4 = !r4;
subkeys[i] = r2; i+=1;
subkeys[i] = r3; i+=1;
subkeys[i] = r1; i+=1;
subkeys[i] = r4; i+=1;
tt = w0 ^ w3 ^ w5 ^ w7 ^ (0x9E3779B9 ^ (40));
w0 = tt.rotate_left(11);
tt = w1 ^ w4 ^ w6 ^ w0 ^ (0x9E3779B9 ^ (40 + 1));
w1 = tt.rotate_left(11);
tt = w2 ^ w5 ^ w7 ^ w1 ^ (0x9E3779B9 ^ (40 + 2));
w2 = tt.rotate_left(11);
tt = w3 ^ w6 ^ w0 ^ w2 ^ (0x9E3779B9 ^ (40 + 3));
w3 = tt.rotate_left(11);
r0 = w0;
r1 = w1;
r2 = w2;
r3 = w3;
r0 = !r0;
r2 = !r2;
r4 = r0;
r0 &= r1;
r2 ^= r0;
r0 |= r3;
r3 ^= r2;
r1 ^= r0;
r0 ^= r4;
r4 |= r1;
r1 ^= r3;
r2 |= r0;
r2 &= r4;
r0 ^= r1;
r1 &= r2;
r1 ^= r0;
r0 &= r2;
r0 ^= r4;
subkeys[i] = r2; i+=1;
subkeys[i] = r0; i+=1;
subkeys[i] = r3; i+=1;
subkeys[i] = r1; i+=1;
tt = w4 ^ w7 ^ w1 ^ w3 ^ (0x9E3779B9 ^ (44));
w4 = tt.rotate_left(11);
tt = w5 ^ w0 ^ w2 ^ w4 ^ (0x9E3779B9 ^ (44 + 1));
w5 = tt.rotate_left(11);
tt = w6 ^ w1 ^ w3 ^ w5 ^ (0x9E3779B9 ^ (44 + 2));
w6 = tt.rotate_left(11);
tt = w7 ^ w2 ^ w4 ^ w6 ^ (0x9E3779B9 ^ (44 + 3));
w7 = tt.rotate_left(11);
r0 = w4;
r1 = w5;
r2 = w6;
r3 = w7;
r3 ^= r0;
r4 = r1;
r1 &= r3;
r4 ^= r2;
r1 ^= r0;
r0 |= r3;
r0 ^= r4;
r4 ^= r3;
r3 ^= r2;
r2 |= r1;
r2 ^= r4;
r4 = !r4;
r4 |= r1;
r1 ^= r3;
r1 ^= r4;
r3 |= r0;
r1 ^= r3;
r4 ^= r3;
subkeys[i] = r1; i+=1;
subkeys[i] = r4; i+=1;
subkeys[i] = r2; i+=1;
subkeys[i] = r0; i+=1;
tt = w0 ^ w3 ^ w5 ^ w7 ^ (0x9E3779B9 ^ (48));
w0 = tt.rotate_left(11);
tt = w1 ^ w4 ^ w6 ^ w0 ^ (0x9E3779B9 ^ (48 + 1));
w1 = tt.rotate_left(11);
tt = w2 ^ w5 ^ w7 ^ w1 ^ (0x9E3779B9 ^ (48 + 2));
w2 = tt.rotate_left(11);
tt = w3 ^ w6 ^ w0 ^ w2 ^ (0x9E3779B9 ^ (48 + 3));
w3 = tt.rotate_left(11);
r0 = w0;
r1 = w1;
r2 = w2;
r3 = w3;
r4 = r1;
r1 |= r2;
r1 ^= r3;
r4 ^= r2;
r2 ^= r1;
r3 |= r4;
r3 &= r0;
r4 ^= r2;
r3 ^= r1;
r1 |= r4;
r1 ^= r0;
r0 |= r4;
r0 ^= r2;
r1 ^= r4;
r2 ^= r1;
r1 &= r0;
r1 ^= r4;
r2 = !r2;
r2 |= r0;
r4 ^= r2;
subkeys[i] = r4; i+=1;
subkeys[i] = r3; i+=1;
subkeys[i] = r1; i+=1;
subkeys[i] = r0; i+=1;
tt = w4 ^ w7 ^ w1 ^ w3 ^ (0x9E3779B9 ^ (52));
w4 = tt.rotate_left(11);
tt = w5 ^ w0 ^ w2 ^ w4 ^ (0x9E3779B9 ^ (52 + 1));
w5 = tt.rotate_left(11);
tt = w6 ^ w1 ^ w3 ^ w5 ^ (0x9E3779B9 ^ (52 + 2));
w6 = tt.rotate_left(11);
tt = w7 ^ w2 ^ w4 ^ w6 ^ (0x9E3779B9 ^ (52 + 3));
w7 = tt.rotate_left(11);
r0 = w4;
r1 = w5;
r2 = w6;
r3 = w7;
r2 = !r2;
r4 = r3;
r3 &= r0;
r0 ^= r4;
r3 ^= r2;
r2 |= r4;
r1 ^= r3;
r2 ^= r0;
r0 |= r1;
r2 ^= r1;
r4 ^= r0;
r0 |= r3;
r0 ^= r2;
r4 ^= r3;
r4 ^= r0;
r3 = !r3;
r2 &= r4;
r2 ^= r3;
subkeys[i] = r0; i+=1;
subkeys[i] = r1; i+=1;
subkeys[i] = r4; i+=1;
subkeys[i] = r2; i+=1;
tt = w0 ^ w3 ^ w5 ^ w7 ^ (0x9E3779B9 ^ (56));
w0 = tt.rotate_left(11);
tt = w1 ^ w4 ^ w6 ^ w0 ^ (0x9E3779B9 ^ (56 + 1));
w1 = tt.rotate_left(11);
tt = w2 ^ w5 ^ w7 ^ w1 ^ (0x9E3779B9 ^ (56 + 2));
w2 = tt.rotate_left(11);
tt = w3 ^ w6 ^ w0 ^ w2 ^ (0x9E3779B9 ^ (56 + 3));
w3 = tt.rotate_left(11);
r0 = w0;
r1 = w1;
r2 = w2;
r3 = w3;
r0 ^= r1;
r1 ^= r3;
r3 = !r3;
r4 = r1;
r1 &= r0;
r2 ^= r3;
r1 ^= r2;
r2 |= r4;
r4 ^= r3;
r3 &= r1;
r3 ^= r0;
r4 ^= r1;
r4 ^= r2;
r2 ^= r0;
r0 &= r3;
r2 = !r2;
r0 ^= r4;
r4 |= r3;
r2 ^= r4;
subkeys[i] = r1; i+=1;
subkeys[i] = r3; i+=1;
subkeys[i] = r0; i+=1;
subkeys[i] = r2; i+=1;
tt = w4 ^ w7 ^ w1 ^ w3 ^ (0x9E3779B9 ^ (60));
w4 = tt.rotate_left(11);
tt = w5 ^ w0 ^ w2 ^ w4 ^ (0x9E3779B9 ^ (60 + 1));
w5 = tt.rotate_left(11);
tt = w6 ^ w1 ^ w3 ^ w5 ^ (0x9E3779B9 ^ (60 + 2));
w6 = tt.rotate_left(11);
tt = w7 ^ w2 ^ w4 ^ w6 ^ (0x9E3779B9 ^ (60 + 3));
w7 = tt.rotate_left(11);
r0 = w4;
r1 = w5;
r2 = w6;
r3 = w7;
r1 ^= r3;
r3 = !r3;
r2 ^= r3;
r3 ^= r0;
r4 = r1;
r1 &= r3;
r1 ^= r2;
r4 ^= r3;
r0 ^= r4;
r2 &= r4;
r2 ^= r0;
r0 &= r1;
r3 ^= r0;
r4 |= r1;
r4 ^= r0;
r0 |= r3;
r0 ^= r2;
r2 &= r3;
r0 = !r0;
r4 ^= r2;
subkeys[i] = r1; i+=1;
subkeys[i] = r4; i+=1;
subkeys[i] = r0; i+=1;
subkeys[i] = r3; i+=1;
tt = w0 ^ w3 ^ w5 ^ w7 ^ (0x9E3779B9 ^ (64));
w0 = tt.rotate_left(11);
tt = w1 ^ w4 ^ w6 ^ w0 ^ (0x9E3779B9 ^ (64 + 1));
w1 = tt.rotate_left(11);
tt = w2 ^ w5 ^ w7 ^ w1 ^ (0x9E3779B9 ^ (64 + 2));
w2 = tt.rotate_left(11);
tt = w3 ^ w6 ^ w0 ^ w2 ^ (0x9E3779B9 ^ (64 + 3));
w3 = tt.rotate_left(11);
r0 = w0;
r1 = w1;
r2 = w2;
r3 = w3;
r4 = r0;
r0 |= r3;
r3 ^= r1;
r1 &= r4;
r4 ^= r2;
r2 ^= r3;
r3 &= r0;
r4 |= r1;
r3 ^= r4;
r0 ^= r1;
r4 &= r0;
r1 ^= r3;
r4 ^= r2;
r1 |= r0;
r1 ^= r2;
r0 ^= r3;
r2 = r1;
r1 |= r3;
r1 ^= r0;
subkeys[i] = r1; i+=1;
subkeys[i] = r2; i+=1;
subkeys[i] = r3; i+=1;
subkeys[i] = r4; i+=1;
tt = w4 ^ w7 ^ w1 ^ w3 ^ (0x9E3779B9 ^ (68));
w4 = tt.rotate_left(11);
tt = w5 ^ w0 ^ w2 ^ w4 ^ (0x9E3779B9 ^ (68 + 1));
w5 = tt.rotate_left(11);
tt = w6 ^ w1 ^ w3 ^ w5 ^ (0x9E3779B9 ^ (68 + 2));
w6 = tt.rotate_left(11);
tt = w7 ^ w2 ^ w4 ^ w6 ^ (0x9E3779B9 ^ (68 + 3));
w7 = tt.rotate_left(11);
r0 = w4;
r1 = w5;
r2 = w6;
r3 = w7;
r4 = r0;
r0 &= r2;
r0 ^= r3;
r2 ^= r1;
r2 ^= r0;
r3 |= r4;
r3 ^= r1;
r4 ^= r2;
r1 = r3;
r3 |= r4;
r3 ^= r0;
r0 &= r1;
r4 ^= r0;
r1 ^= r3;
r1 ^= r4;
r4 = !r4;
subkeys[i] = r2; i+=1;
subkeys[i] = r3; i+=1;
subkeys[i] = r1; i+=1;
subkeys[i] = r4; i+=1;
tt = w0 ^ w3 ^ w5 ^ w7 ^ (0x9E3779B9 ^ (72));
w0 = tt.rotate_left(11);
tt = w1 ^ w4 ^ w6 ^ w0 ^ (0x9E3779B9 ^ (72 + 1));
w1 = tt.rotate_left(11);
tt = w2 ^ w5 ^ w7 ^ w1 ^ (0x9E3779B9 ^ (72 + 2));
w2 = tt.rotate_left(11);
tt = w3 ^ w6 ^ w0 ^ w2 ^ (0x9E3779B9 ^ (72 + 3));
w3 = tt.rotate_left(11);
r0 = w0;
r1 = w1;
r2 = w2;
r3 = w3;
r0 = !r0;
r2 = !r2;
r4 = r0;
r0 &= r1;
r2 ^= r0;
r0 |= r3;
r3 ^= r2;
r1 ^= r0;
r0 ^= r4;
r4 |= r1;
r1 ^= r3;
r2 |= r0;
r2 &= r4;
r0 ^= r1;
r1 &= r2;
r1 ^= r0;
r0 &= r2;
r0 ^= r4;
subkeys[i] = r2; i+=1;
subkeys[i] = r0; i+=1;
subkeys[i] = r3; i+=1;
subkeys[i] = r1; i+=1;
tt = w4 ^ w7 ^ w1 ^ w3 ^ (0x9E3779B9 ^ (76));
w4 = tt.rotate_left(11);
tt = w5 ^ w0 ^ w2 ^ w4 ^ (0x9E3779B9 ^ (76 + 1));
w5 = tt.rotate_left(11);
tt = w6 ^ w1 ^ w3 ^ w5 ^ (0x9E3779B9 ^ (76 + 2));
w6 = tt.rotate_left(11);
tt = w7 ^ w2 ^ w4 ^ w6 ^ (0x9E3779B9 ^ (76 + 3));
w7 = tt.rotate_left(11);
r0 = w4;
r1 = w5;
r2 = w6;
r3 = w7;
r3 ^= r0;
r4 = r1;
r1 &= r3;
r4 ^= r2;
r1 ^= r0;
r0 |= r3;
r0 ^= r4;
r4 ^= r3;
r3 ^= r2;
r2 |= r1;
r2 ^= r4;
r4 = !r4;
r4 |= r1;
r1 ^= r3;
r1 ^= r4;
r3 |= r0;
r1 ^= r3;
r4 ^= r3;
subkeys[i] = r1; i+=1;
subkeys[i] = r4; i+=1;
subkeys[i] = r2; i+=1;
subkeys[i] = r0; i+=1;
tt = w0 ^ w3 ^ w5 ^ w7 ^ (0x9E3779B9 ^ (80));
w0 = tt.rotate_left(11);
tt = w1 ^ w4 ^ w6 ^ w0 ^ (0x9E3779B9 ^ (80 + 1));
w1 = tt.rotate_left(11);
tt = w2 ^ w5 ^ w7 ^ w1 ^ (0x9E3779B9 ^ (80 + 2));
w2 = tt.rotate_left(11);
tt = w3 ^ w6 ^ w0 ^ w2 ^ (0x9E3779B9 ^ (80 + 3));
w3 = tt.rotate_left(11);
r0 = w0;
r1 = w1;
r2 = w2;
r3 = w3;
r4 = r1;
r1 |= r2;
r1 ^= r3;
r4 ^= r2;
r2 ^= r1;
r3 |= r4;
r3 &= r0;
r4 ^= r2;
r3 ^= r1;
r1 |= r4;
r1 ^= r0;
r0 |= r4;
r0 ^= r2;
r1 ^= r4;
r2 ^= r1;
r1 &= r0;
r1 ^= r4;
r2 = !r2;
r2 |= r0;
r4 ^= r2;
subkeys[i] = r4; i+=1;
subkeys[i] = r3; i+=1;
subkeys[i] = r1; i+=1;
subkeys[i] = r0; i+=1;
tt = w4 ^ w7 ^ w1 ^ w3 ^ (0x9E3779B9 ^ (84));
w4 = tt.rotate_left(11);
tt = w5 ^ w0 ^ w2 ^ w4 ^ (0x9E3779B9 ^ (84 + 1));
w5 = tt.rotate_left(11);
tt = w6 ^ w1 ^ w3 ^ w5 ^ (0x9E3779B9 ^ (84 + 2));
w6 = tt.rotate_left(11);
tt = w7 ^ w2 ^ w4 ^ w6 ^ (0x9E3779B9 ^ (84 + 3));
w7 = tt.rotate_left(11);
r0 = w4;
r1 = w5;
r2 = w6;
r3 = w7;
r2 = !r2;
r4 = r3;
r3 &= r0;
r0 ^= r4;
r3 ^= r2;
r2 |= r4;
r1 ^= r3;
r2 ^= r0;
r0 |= r1;
r2 ^= r1;
r4 ^= r0;
r0 |= r3;
r0 ^= r2;
r4 ^= r3;
r4 ^= r0;
r3 = !r3;
r2 &= r4;
r2 ^= r3;
subkeys[i] = r0; i+=1;
subkeys[i] = r1; i+=1;
subkeys[i] = r4; i+=1;
subkeys[i] = r2; i+=1;
tt = w0 ^ w3 ^ w5 ^ w7 ^ (0x9E3779B9 ^ (88));
w0 = tt.rotate_left(11);
tt = w1 ^ w4 ^ w6 ^ w0 ^ (0x9E3779B9 ^ (88 + 1));
w1 = tt.rotate_left(11);
tt = w2 ^ w5 ^ w7 ^ w1 ^ (0x9E3779B9 ^ (88 + 2));
w2 = tt.rotate_left(11);
tt = w3 ^ w6 ^ w0 ^ w2 ^ (0x9E3779B9 ^ (88 + 3));
w3 = tt.rotate_left(11);
r0 = w0;
r1 = w1;
r2 = w2;
r3 = w3;
r0 ^= r1;
r1 ^= r3;
r3 = !r3;
r4 = r1;
r1 &= r0;
r2 ^= r3;
r1 ^= r2;
r2 |= r4;
r4 ^= r3;
r3 &= r1;
r3 ^= r0;
r4 ^= r1;
r4 ^= r2;
r2 ^= r0;
r0 &= r3;
r2 = !r2;
r0 ^= r4;
r4 |= r3;
r2 ^= r4;
subkeys[i] = r1; i+=1;
subkeys[i] = r3; i+=1;
subkeys[i] = r0; i+=1;
subkeys[i] = r2; i+=1;
tt = w4 ^ w7 ^ w1 ^ w3 ^ (0x9E3779B9 ^ (92));
w4 = tt.rotate_left(11);
tt = w5 ^ w0 ^ w2 ^ w4 ^ (0x9E3779B9 ^ (92 + 1));
w5 = tt.rotate_left(11);
tt = w6 ^ w1 ^ w3 ^ w5 ^ (0x9E3779B9 ^ (92 + 2));
w6 = tt.rotate_left(11);
tt = w7 ^ w2 ^ w4 ^ w6 ^ (0x9E3779B9 ^ (92 + 3));
w7 = tt.rotate_left(11);
r0 = w4;
r1 = w5;
r2 = w6;
r3 = w7;
r1 ^= r3;
r3 = !r3;
r2 ^= r3;
r3 ^= r0;
r4 = r1;
r1 &= r3;
r1 ^= r2;
r4 ^= r3;
r0 ^= r4;
r2 &= r4;
r2 ^= r0;
r0 &= r1;
r3 ^= r0;
r4 |= r1;
r4 ^= r0;
r0 |= r3;
r0 ^= r2;
r2 &= r3;
r0 = !r0;
r4 ^= r2;
subkeys[i] = r1; i+=1;
subkeys[i] = r4; i+=1;
subkeys[i] = r0; i+=1;
subkeys[i] = r3; i+=1;
tt = w0 ^ w3 ^ w5 ^ w7 ^ (0x9E3779B9 ^ (96));
w0 = tt.rotate_left(11);
tt = w1 ^ w4 ^ w6 ^ w0 ^ (0x9E3779B9 ^ (96 + 1));
w1 = tt.rotate_left(11);
tt = w2 ^ w5 ^ w7 ^ w1 ^ (0x9E3779B9 ^ (96 + 2));
w2 = tt.rotate_left(11);
tt = w3 ^ w6 ^ w0 ^ w2 ^ (0x9E3779B9 ^ (96 + 3));
w3 = tt.rotate_left(11);
r0 = w0;
r1 = w1;
r2 = w2;
r3 = w3;
r4 = r0;
r0 |= r3;
r3 ^= r1;
r1 &= r4;
r4 ^= r2;
r2 ^= r3;
r3 &= r0;
r4 |= r1;
r3 ^= r4;
r0 ^= r1;
r4 &= r0;
r1 ^= r3;
r4 ^= r2;
r1 |= r0;
r1 ^= r2;
r0 ^= r3;
r2 = r1;
r1 |= r3;
r1 ^= r0;
subkeys[i] = r1; i+=1;
subkeys[i] = r2; i+=1;
subkeys[i] = r3; i+=1;
subkeys[i] = r4;
}
fn iv_setup(iv : &[u8], subkeys : &mut[u32; 100], lfsr : &mut[u32; 10], fsm_r : &mut[u32; 2]) {
let mut nonce : [u8; 16] = [0; 16];
if iv.len() < 16 {
copy_memory(&iv, &mut nonce[0..iv.len()]);
} else {
copy_memory(&iv[0..16], &mut nonce[0..16]);
}
let mut r0 : u32;
let mut r1 : u32;
let mut r2 : u32;
let mut r3 : u32;
let mut r4 : u32;
r0 = read_u32_le(&nonce[0..4]);
r1 = read_u32_le(&nonce[4..8]);
r2 = read_u32_le(&nonce[8..12]);
r3 = read_u32_le(&nonce[12..16]);
r0 ^= subkeys[0];
r1 ^= subkeys[0 + 1];
r2 ^= subkeys[0 + 2];
r3 ^= subkeys[0 + 3];
r3 ^= r0;
r4 = r1;
r1 &= r3;
r4 ^= r2;
r1 ^= r0;
r0 |= r3;
r0 ^= r4;
r4 ^= r3;
r3 ^= r2;
r2 |= r1;
r2 ^= r4;
r4 = !r4;
r4 |= r1;
r1 ^= r3;
r1 ^= r4;
r3 |= r0;
r1 ^= r3;
r4 ^= r3;
r1 = r1.rotate_left(13);
r2 = r2.rotate_left(3);
r4 = r4 ^ r1 ^ r2;
r0 = r0 ^ r2 ^ (r1 << 3);
r4 = r4.rotate_left(1);
r0 = r0.rotate_left(7);
r1 = r1 ^ r4 ^ r0;
r2 = r2 ^ r0 ^ (r4 << 7);
r1 = r1.rotate_left(5);
r2 = r2.rotate_left(22);
r1 ^= subkeys[4];
r4 ^= subkeys[4 + 1];
r2 ^= subkeys[4 + 2];
r0 ^= subkeys[4 + 3];
r1 = !r1;
r2 = !r2;
r3 = r1;
r1 &= r4;
r2 ^= r1;
r1 |= r0;
r0 ^= r2;
r4 ^= r1;
r1 ^= r3;
r3 |= r4;
r4 ^= r0;
r2 |= r1;
r2 &= r3;
r1 ^= r4;
r4 &= r2;
r4 ^= r1;
r1 &= r2;
r1 ^= r3;
r2 = r2.rotate_left(13);
r0 = r0.rotate_left(3);
r1 = r1 ^ r2 ^ r0;
r4 = r4 ^ r0 ^ (r2 << 3);
r1 = r1.rotate_left(1);
r4 = r4.rotate_left(7);
r2 = r2 ^ r1 ^ r4;
r0 = r0 ^ r4 ^ (r1 << 7);
r2 = r2.rotate_left(5);
r0 = r0.rotate_left(22);
r2 ^= subkeys[8];
r1 ^= subkeys[8 + 1];
r0 ^= subkeys[8 + 2];
r4 ^= subkeys[8 + 3];
r3 = r2;
r2 &= r0;
r2 ^= r4;
r0 ^= r1;
r0 ^= r2;
r4 |= r3;
r4 ^= r1;
r3 ^= r0;
r1 = r4;
r4 |= r3;
r4 ^= r2;
r2 &= r1;
r3 ^= r2;
r1 ^= r4;
r1 ^= r3;
r3 = !r3;
r0 = r0.rotate_left(13);
r1 = r1.rotate_left(3);
r4 = r4 ^ r0 ^ r1;
r3 = r3 ^ r1 ^ (r0 << 3);
r4 = r4.rotate_left(1);
r3 = r3.rotate_left(7);
r0 = r0 ^ r4 ^ r3;
r1 = r1 ^ r3 ^ (r4 << 7);
r0 = r0.rotate_left(5);
r1 = r1.rotate_left(22);
r0 ^= subkeys[12];
r4 ^= subkeys[12 + 1];
r1 ^= subkeys[12 + 2];
r3 ^= subkeys[12 + 3];
r2 = r0;
r0 |= r3;
r3 ^= r4;
r4 &= r2;
r2 ^= r1;
r1 ^= r3;
r3 &= r0;
r2 |= r4;
r3 ^= r2;
r0 ^= r4;
r2 &= r0;
r4 ^= r3;
r2 ^= r1;
r4 |= r0;
r4 ^= r1;
r0 ^= r3;
r1 = r4;
r4 |= r3;
r4 ^= r0;
r4 = r4.rotate_left(13);
r3 = r3.rotate_left(3);
r1 = r1 ^ r4 ^ r3;
r2 = r2 ^ r3 ^ (r4 << 3);
r1 = r1.rotate_left(1);
r2 = r2.rotate_left(7);
r4 = r4 ^ r1 ^ r2;
r3 = r3 ^ r2 ^ (r1 << 7);
r4 = r4.rotate_left(5);
r3 = r3.rotate_left(22);
r4 ^= subkeys[16];
r1 ^= subkeys[16 + 1];
r3 ^= subkeys[16 + 2];
r2 ^= subkeys[16 + 3];
r1 ^= r2;
r2 = !r2;
r3 ^= r2;
r2 ^= r4;
r0 = r1;
r1 &= r2;
r1 ^= r3;
r0 ^= r2;
r4 ^= r0;
r3 &= r0;
r3 ^= r4;
r4 &= r1;
r2 ^= r4;
r0 |= r1;
r0 ^= r4;
r4 |= r2;
r4 ^= r3;
r3 &= r2;
r4 = !r4;
r0 ^= r3;
r1 = r1.rotate_left(13);
r4 = r4.rotate_left(3);
r0 = r0 ^ r1 ^ r4;
r2 = r2 ^ r4 ^ (r1 << 3);
r0 = r0.rotate_left(1);
r2 = r2.rotate_left(7);
r1 = r1 ^ r0 ^ r2;
r4 = r4 ^ r2 ^ (r0 << 7);
r1 = r1.rotate_left(5);
r4 = r4.rotate_left(22);
r1 ^= subkeys[20];
r0 ^= subkeys[20 + 1];
r4 ^= subkeys[20 + 2];
r2 ^= subkeys[20 + 3];
r1 ^= r0;
r0 ^= r2;
r2 = !r2;
r3 = r0;
r0 &= r1;
r4 ^= r2;
r0 ^= r4;
r4 |= r3;
r3 ^= r2;
r2 &= r0;
r2 ^= r1;
r3 ^= r0;
r3 ^= r4;
r4 ^= r1;
r1 &= r2;
r4 = !r4;
r1 ^= r3;
r3 |= r2;
r4 ^= r3;
r0 = r0.rotate_left(13);
r1 = r1.rotate_left(3);
r2 = r2 ^ r0 ^ r1;
r4 = r4 ^ r1 ^ (r0 << 3);
r2 = r2.rotate_left(1);
r4 = r4.rotate_left(7);
r0 = r0 ^ r2 ^ r4;
r1 = r1 ^ r4 ^ (r2 << 7);
r0 = r0.rotate_left(5);
r1 = r1.rotate_left(22);
r0 ^= subkeys[24];
r2 ^= subkeys[24 + 1];
r1 ^= subkeys[24 + 2];
r4 ^= subkeys[24 + 3];
r1 = !r1;
r3 = r4;
r4 &= r0;
r0 ^= r3;
r4 ^= r1;
r1 |= r3;
r2 ^= r4;
r1 ^= r0;
r0 |= r2;
r1 ^= r2;
r3 ^= r0;
r0 |= r4;
r0 ^= r1;
r3 ^= r4;
r3 ^= r0;
r4 = !r4;
r1 &= r3;
r1 ^= r4;
r0 = r0.rotate_left(13);
r3 = r3.rotate_left(3);
r2 = r2 ^ r0 ^ r3;
r1 = r1 ^ r3 ^ (r0 << 3);
r2 = r2.rotate_left(1);
r1 = r1.rotate_left(7);
r0 = r0 ^ r2 ^ r1;
r3 = r3 ^ r1 ^ (r2 << 7);
r0 = r0.rotate_left(5);
r3 = r3.rotate_left(22);
r0 ^= subkeys[28];
r2 ^= subkeys[28 + 1];
r3 ^= subkeys[28 + 2];
r1 ^= subkeys[28 + 3];
r4 = r2;
r2 |= r3;
r2 ^= r1;
r4 ^= r3;
r3 ^= r2;
r1 |= r4;
r1 &= r0;
r4 ^= r3;
r1 ^= r2;
r2 |= r4;
r2 ^= r0;
r0 |= r4;
r0 ^= r3;
r2 ^= r4;
r3 ^= r2;
r2 &= r0;
r2 ^= r4;
r3 = !r3;
r3 |= r0;
r4 ^= r3;
r4 = r4.rotate_left(13);
r2 = r2.rotate_left(3);
r1 = r1 ^ r4 ^ r2;
r0 = r0 ^ r2 ^ (r4 << 3);
r1 = r1.rotate_left(1);
r0 = r0.rotate_left(7);
r4 = r4 ^ r1 ^ r0;
r2 = r2 ^ r0 ^ (r1 << 7);
r4 = r4.rotate_left(5);
r2 = r2.rotate_left(22);
r4 ^= subkeys[32];
r1 ^= subkeys[32 + 1];
r2 ^= subkeys[32 + 2];
r0 ^= subkeys[32 + 3];
r0 ^= r4;
r3 = r1;
r1 &= r0;
r3 ^= r2;
r1 ^= r4;
r4 |= r0;
r4 ^= r3;
r3 ^= r0;
r0 ^= r2;
r2 |= r1;
r2 ^= r3;
r3 = !r3;
r3 |= r1;
r1 ^= r0;
r1 ^= r3;
r0 |= r4;
r1 ^= r0;
r3 ^= r0;
r1 = r1.rotate_left(13);
r2 = r2.rotate_left(3);
r3 = r3 ^ r1 ^ r2;
r4 = r4 ^ r2 ^ (r1 << 3);
r3 = r3.rotate_left(1);
r4 = r4.rotate_left(7);
r1 = r1 ^ r3 ^ r4;
r2 = r2 ^ r4 ^ (r3 << 7);
r1 = r1.rotate_left(5);
r2 = r2.rotate_left(22);
r1 ^= subkeys[36];
r3 ^= subkeys[36 + 1];
r2 ^= subkeys[36 + 2];
r4 ^= subkeys[36 + 3];
r1 = !r1;
r2 = !r2;
r0 = r1;
r1 &= r3;
r2 ^= r1;
r1 |= r4;
r4 ^= r2;
r3 ^= r1;
r1 ^= r0;
r0 |= r3;
r3 ^= r4;
r2 |= r1;
r2 &= r0;
r1 ^= r3;
r3 &= r2;
r3 ^= r1;
r1 &= r2;
r1 ^= r0;
r2 = r2.rotate_left(13);
r4 = r4.rotate_left(3);
r1 = r1 ^ r2 ^ r4;
r3 = r3 ^ r4 ^ (r2 << 3);
r1 = r1.rotate_left(1);
r3 = r3.rotate_left(7);
r2 = r2 ^ r1 ^ r3;
r4 = r4 ^ r3 ^ (r1 << 7);
r2 = r2.rotate_left(5);
r4 = r4.rotate_left(22);
r2 ^= subkeys[40];
r1 ^= subkeys[40 + 1];
r4 ^= subkeys[40 + 2];
r3 ^= subkeys[40 + 3];
r0 = r2;
r2 &= r4;
r2 ^= r3;
r4 ^= r1;
r4 ^= r2;
r3 |= r0;
r3 ^= r1;
r0 ^= r4;
r1 = r3;
r3 |= r0;
r3 ^= r2;
r2 &= r1;
r0 ^= r2;
r1 ^= r3;
r1 ^= r0;
r0 = !r0;
r4 = r4.rotate_left(13);
r1 = r1.rotate_left(3);
r3 = r3 ^ r4 ^ r1;
r0 = r0 ^ r1 ^ (r4 << 3);
r3 = r3.rotate_left(1);
r0 = r0.rotate_left(7);
r4 = r4 ^ r3 ^ r0;
r1 = r1 ^ r0 ^ (r3 << 7);
r4 = r4.rotate_left(5);
r1 = r1.rotate_left(22);
r4 ^= subkeys[44];
r3 ^= subkeys[44 + 1];
r1 ^= subkeys[44 + 2];
r0 ^= subkeys[44 + 3];
r2 = r4;
r4 |= r0;
r0 ^= r3;
r3 &= r2;
r2 ^= r1;
r1 ^= r0;
r0 &= r4;
r2 |= r3;
r0 ^= r2;
r4 ^= r3;
r2 &= r4;
r3 ^= r0;
r2 ^= r1;
r3 |= r4;
r3 ^= r1;
r4 ^= r0;
r1 = r3;
r3 |= r0;
r3 ^= r4;
r3 = r3.rotate_left(13);
r0 = r0.rotate_left(3);
r1 = r1 ^ r3 ^ r0;
r2 = r2 ^ r0 ^ (r3 << 3);
r1 = r1.rotate_left(1);
r2 = r2.rotate_left(7);
r3 = r3 ^ r1 ^ r2;
r0 = r0 ^ r2 ^ (r1 << 7);
r3 = r3.rotate_left(5);
r0 = r0.rotate_left(22);
lfsr[9] = r3;
lfsr[8] = r1;
lfsr[7] = r0;
lfsr[6] = r2;
r3 ^= subkeys[48];
r1 ^= subkeys[48 + 1];
r0 ^= subkeys[48 + 2];
r2 ^= subkeys[48 + 3];
r1 ^= r2;
r2 = !r2;
r0 ^= r2;
r2 ^= r3;
r4 = r1;
r1 &= r2;
r1 ^= r0;
r4 ^= r2;
r3 ^= r4;
r0 &= r4;
r0 ^= r3;
r3 &= r1;
r2 ^= r3;
r4 |= r1;
r4 ^= r3;
r3 |= r2;
r3 ^= r0;
r0 &= r2;
r3 = !r3;
r4 ^= r0;
r1 = r1.rotate_left(13);
r3 = r3.rotate_left(3);
r4 = r4 ^ r1 ^ r3;
r2 = r2 ^ r3 ^ (r1 << 3);
r4 = r4.rotate_left(1);
r2 = r2.rotate_left(7);
r1 = r1 ^ r4 ^ r2;
r3 = r3 ^ r2 ^ (r4 << 7);
r1 = r1.rotate_left(5);
r3 = r3.rotate_left(22);
r1 ^= subkeys[52];
r4 ^= subkeys[52 + 1];
r3 ^= subkeys[52 + 2];
r2 ^= subkeys[52 + 3];
r1 ^= r4;
r4 ^= r2;
r2 = !r2;
r0 = r4;
r4 &= r1;
r3 ^= r2;
r4 ^= r3;
r3 |= r0;
r0 ^= r2;
r2 &= r4;
r2 ^= r1;
r0 ^= r4;
r0 ^= r3;
r3 ^= r1;
r1 &= r2;
r3 = !r3;
r1 ^= r0;
r0 |= r2;
r3 ^= r0;
r4 = r4.rotate_left(13);
r1 = r1.rotate_left(3);
r2 = r2 ^ r4 ^ r1;
r3 = r3 ^ r1 ^ (r4 << 3);
r2 = r2.rotate_left(1);
r3 = r3.rotate_left(7);
r4 = r4 ^ r2 ^ r3;
r1 = r1 ^ r3 ^ (r2 << 7);
r4 = r4.rotate_left(5);
r1 = r1.rotate_left(22);
r4 ^= subkeys[56];
r2 ^= subkeys[56 + 1];
r1 ^= subkeys[56 + 2];
r3 ^= subkeys[56 + 3];
r1 = !r1;
r0 = r3;
r3 &= r4;
r4 ^= r0;
r3 ^= r1;
r1 |= r0;
r2 ^= r3;
r1 ^= r4;
r4 |= r2;
r1 ^= r2;
r0 ^= r4;
r4 |= r3;
r4 ^= r1;
r0 ^= r3;
r0 ^= r4;
r3 = !r3;
r1 &= r0;
r1 ^= r3;
r4 = r4.rotate_left(13);
r0 = r0.rotate_left(3);
r2 = r2 ^ r4 ^ r0;
r1 = r1 ^ r0 ^ (r4 << 3);
r2 = r2.rotate_left(1);
r1 = r1.rotate_left(7);
r4 = r4 ^ r2 ^ r1;
r0 = r0 ^ r1 ^ (r2 << 7);
r4 = r4.rotate_left(5);
r0 = r0.rotate_left(22);
r4 ^= subkeys[60];
r2 ^= subkeys[60 + 1];
r0 ^= subkeys[60 + 2];
r1 ^= subkeys[60 + 3];
r3 = r2;
r2 |= r0;
r2 ^= r1;
r3 ^= r0;
r0 ^= r2;
r1 |= r3;
r1 &= r4;
r3 ^= r0;
r1 ^= r2;
r2 |= r3;
r2 ^= r4;
r4 |= r3;
r4 ^= r0;
r2 ^= r3;
r0 ^= r2;
r2 &= r4;
r2 ^= r3;
r0 = !r0;
r0 |= r4;
r3 ^= r0;
r3 = r3.rotate_left(13);
r2 = r2.rotate_left(3);
r1 = r1 ^ r3 ^ r2;
r4 = r4 ^ r2 ^ (r3 << 3);
r1 = r1.rotate_left(1);
r4 = r4.rotate_left(7);
r3 = r3 ^ r1 ^ r4;
r2 = r2 ^ r4 ^ (r1 << 7);
r3 = r3.rotate_left(5);
r2 = r2.rotate_left(22);
r3 ^= subkeys[64];
r1 ^= subkeys[64 + 1];
r2 ^= subkeys[64 + 2];
r4 ^= subkeys[64 + 3];
r4 ^= r3;
r0 = r1;
r1 &= r4;
r0 ^= r2;
r1 ^= r3;
r3 |= r4;
r3 ^= r0;
r0 ^= r4;
r4 ^= r2;
r2 |= r1;
r2 ^= r0;
r0 = !r0;
r0 |= r1;
r1 ^= r4;
r1 ^= r0;
r4 |= r3;
r1 ^= r4;
r0 ^= r4;
r1 = r1.rotate_left(13);
r2 = r2.rotate_left(3);
r0 = r0 ^ r1 ^ r2;
r3 = r3 ^ r2 ^ (r1 << 3);
r0 = r0.rotate_left(1);
r3 = r3.rotate_left(7);
r1 = r1 ^ r0 ^ r3;
r2 = r2 ^ r3 ^ (r0 << 7);
r1 = r1.rotate_left(5);
r2 = r2.rotate_left(22);
r1 ^= subkeys[68];
r0 ^= subkeys[68 + 1];
r2 ^= subkeys[68 + 2];
r3 ^= subkeys[68 + 3];
r1 = !r1;
r2 = !r2;
r4 = r1;
r1 &= r0;
r2 ^= r1;
r1 |= r3;
r3 ^= r2;
r0 ^= r1;
r1 ^= r4;
r4 |= r0;
r0 ^= r3;
r2 |= r1;
r2 &= r4;
r1 ^= r0;
r0 &= r2;
r0 ^= r1;
r1 &= r2;
r1 ^= r4;
r2 = r2.rotate_left(13);
r3 = r3.rotate_left(3);
r1 = r1 ^ r2 ^ r3;
r0 = r0 ^ r3 ^ (r2 << 3);
r1 = r1.rotate_left(1);
r0 = r0.rotate_left(7);
r2 = r2 ^ r1 ^ r0;
r3 = r3 ^ r0 ^ (r1 << 7);
r2 = r2.rotate_left(5);
r3 = r3.rotate_left(22);
fsm_r[0] = r2;
lfsr[4] = r1;
fsm_r[1] = r3;
lfsr[5] = r0;
r2 ^= subkeys[72];
r1 ^= subkeys[72 + 1];
r3 ^= subkeys[72 + 2];
r0 ^= subkeys[72 + 3];
r4 = r2;
r2 &= r3;
r2 ^= r0;
r3 ^= r1;
r3 ^= r2;
r0 |= r4;
r0 ^= r1;
r4 ^= r3;
r1 = r0;
r0 |= r4;
r0 ^= r2;
r2 &= r1;
r4 ^= r2;
r1 ^= r0;
r1 ^= r4;
r4 = !r4;
r3 = r3.rotate_left(13);
r1 = r1.rotate_left(3);
r0 = r0 ^ r3 ^ r1;
r4 = r4 ^ r1 ^ (r3 << 3);
r0 = r0.rotate_left(1);
r4 = r4.rotate_left(7);
r3 = r3 ^ r0 ^ r4;
r1 = r1 ^ r4 ^ (r0 << 7);
r3 = r3.rotate_left(5);
r1 = r1.rotate_left(22);
r3 ^= subkeys[76];
r0 ^= subkeys[76 + 1];
r1 ^= subkeys[76 + 2];
r4 ^= subkeys[76 + 3];
r2 = r3;
r3 |= r4;
r4 ^= r0;
r0 &= r2;
r2 ^= r1;
r1 ^= r4;
r4 &= r3;
r2 |= r0;
r4 ^= r2;
r3 ^= r0;
r2 &= r3;
r0 ^= r4;
r2 ^= r1;
r0 |= r3;
r0 ^= r1;
r3 ^= r4;
r1 = r0;
r0 |= r4;
r0 ^= r3;
r0 = r0.rotate_left(13);
r4 = r4.rotate_left(3);
r1 = r1 ^ r0 ^ r4;
r2 = r2 ^ r4 ^ (r0 << 3);
r1 = r1.rotate_left(1);
r2 = r2.rotate_left(7);
r0 = r0 ^ r1 ^ r2;
r4 = r4 ^ r2 ^ (r1 << 7);
r0 = r0.rotate_left(5);
r4 = r4.rotate_left(22);
r0 ^= subkeys[80];
r1 ^= subkeys[80 + 1];
r4 ^= subkeys[80 + 2];
r2 ^= subkeys[80 + 3];
r1 ^= r2;
r2 = !r2;
r4 ^= r2;
r2 ^= r0;
r3 = r1;
r1 &= r2;
r1 ^= r4;
r3 ^= r2;
r0 ^= r3;
r4 &= r3;
r4 ^= r0;
r0 &= r1;
r2 ^= r0;
r3 |= r1;
r3 ^= r0;
r0 |= r2;
r0 ^= r4;
r4 &= r2;
r0 = !r0;
r3 ^= r4;
r1 = r1.rotate_left(13);
r0 = r0.rotate_left(3);
r3 = r3 ^ r1 ^ r0;
r2 = r2 ^ r0 ^ (r1 << 3);
r3 = r3.rotate_left(1);
r2 = r2.rotate_left(7);
r1 = r1 ^ r3 ^ r2;
r0 = r0 ^ r2 ^ (r3 << 7);
r1 = r1.rotate_left(5);
r0 = r0.rotate_left(22);
r1 ^= subkeys[84];
r3 ^= subkeys[84 + 1];
r0 ^= subkeys[84 + 2];
r2 ^= subkeys[84 + 3];
r1 ^= r3;
r3 ^= r2;
r2 = !r2;
r4 = r3;
r3 &= r1;
r0 ^= r2;
r3 ^= r0;
r0 |= r4;
r4 ^= r2;
r2 &= r3;
r2 ^= r1;
r4 ^= r3;
r4 ^= r0;
r0 ^= r1;
r1 &= r2;
r0 = !r0;
r1 ^= r4;
r4 |= r2;
r0 ^= r4;
r3 = r3.rotate_left(13);
r1 = r1.rotate_left(3);
r2 = r2 ^ r3 ^ r1;
r0 = r0 ^ r1 ^ (r3 << 3);
r2 = r2.rotate_left(1);
r0 = r0.rotate_left(7);
r3 = r3 ^ r2 ^ r0;
r1 = r1 ^ r0 ^ (r2 << 7);
r3 = r3.rotate_left(5);
r1 = r1.rotate_left(22);
r3 ^= subkeys[88];
r2 ^= subkeys[88 + 1];
r1 ^= subkeys[88 + 2];
r0 ^= subkeys[88 + 3];
r1 = !r1;
r4 = r0;
r0 &= r3;
r3 ^= r4;
r0 ^= r1;
r1 |= r4;
r2 ^= r0;
r1 ^= r3;
r3 |= r2;
r1 ^= r2;
r4 ^= r3;
r3 |= r0;
r3 ^= r1;
r4 ^= r0;
r4 ^= r3;
r0 = !r0;
r1 &= r4;
r1 ^= r0;
r3 = r3.rotate_left(13);
r4 = r4.rotate_left(3);
r2 = r2 ^ r3 ^ r4;
r1 = r1 ^ r4 ^ (r3 << 3);
r2 = r2.rotate_left(1);
r1 = r1.rotate_left(7);
r3 = r3 ^ r2 ^ r1;
r4 = r4 ^ r1 ^ (r2 << 7);
r3 = r3.rotate_left(5);
r4 = r4.rotate_left(22);
r3 ^= subkeys[92];
r2 ^= subkeys[92 + 1];
r4 ^= subkeys[92 + 2];
r1 ^= subkeys[92 + 3];
r0 = r2;
r2 |= r4;
r2 ^= r1;
r0 ^= r4;
r4 ^= r2;
r1 |= r0;
r1 &= r3;
r0 ^= r4;
r1 ^= r2;
r2 |= r0;
r2 ^= r3;
r3 |= r0;
r3 ^= r4;
r2 ^= r0;
r4 ^= r2;
r2 &= r3;
r2 ^= r0;
r4 = !r4;
r4 |= r3;
r0 ^= r4;
r0 = r0.rotate_left(13);
r2 = r2.rotate_left(3);
r1 = r1 ^ r0 ^ r2;
r3 = r3 ^ r2 ^ (r0 << 3);
r1 = r1.rotate_left(1);
r3 = r3.rotate_left(7);
r0 = r0 ^ r1 ^ r3;
r2 = r2 ^ r3 ^ (r1 << 7);
r0 = r0.rotate_left(5);
r2 = r2.rotate_left(22);
r0 ^= subkeys[96];
r1 ^= subkeys[96 + 1];
r2 ^= subkeys[96 + 2];
r3 ^= subkeys[96 + 3];
lfsr[3] = r0;
lfsr[2] = r1;
lfsr[1] = r2;
lfsr[0] = r3;
}
impl SynchronousStreamCipher for Sosemanuk {
fn process(&mut self, input: &[u8], output: &mut [u8]) {
assert!(input.len() == output.len());
for (x, y) in input.iter().zip(output.iter_mut()) {
*y = *x ^ self.next();
}
}
}
impl Encryptor for Sosemanuk {
fn encrypt(&mut self, input: &mut RefReadBuffer, output: &mut RefWriteBuffer, _: bool)
-> Result<BufferResult, SymmetricCipherError> {
symm_enc_or_dec(self, input, output)
}
}
impl Decryptor for Sosemanuk {
fn decrypt(&mut self, input: &mut RefReadBuffer, output: &mut RefWriteBuffer, _: bool)
-> Result<BufferResult, SymmetricCipherError> {
symm_enc_or_dec(self, input, output)
}
}
#[cfg(test)]
mod test {
use sosemanuk::Sosemanuk;
use symmetriccipher::SynchronousStreamCipher;
use serialize::hex::{FromHex};
// Vectors from http://www.ecrypt.eu.org/stream/svn/viewcvs.cgi/ecrypt/trunk/submissions/sosemanuk/unverified.test-vectors?rev=108&view=markup
#[test]
fn test_sosemanuk_ecrypt_set_1_vector_0() {
let key = "8000000000000000000000000000000000000000000000000000000000000000".from_hex().unwrap();
let nonce = "00000000000000000000000000000000".from_hex().unwrap();
let input = [0u8; 64];
let expected_output_hex = "1782FABFF497A0E89E16E1BCF22F0FE8AA8C566D293AA35B2425E4F26E31C3E7701C08A0D614AF3D3861A7DFF7D6A38A0EFE84A29FADF68D390A3D15B75C972D";
let expected_output = expected_output_hex.from_hex().unwrap();
let mut output = [0u8; 64];
let mut sosemanuk = Sosemanuk::new(key.as_ref(), nonce.as_ref());
sosemanuk.process(&input, &mut output);
let expected: &[u8] = expected_output.as_ref();
assert!(output.as_ref() == expected);
}
#[test]
fn test_sosemanuk_ecrypt_set_2_vector_63() {
let key = "3F3F3F3F3F3F3F3F3F3F3F3F3F3F3F3F".from_hex().unwrap();
let nonce = "00000000000000000000000000000000".from_hex().unwrap();
let input = [0u8; 64];
let expected_output_hex = "7D755F30A2B747A50D7D28147EDF0B3E3FAB6856A7373C7306C00D1D4076969354D7AB4343C0115E7839502C5C699ED06DB119968AEBFD08D8B968A7161D613F";
let expected_output = expected_output_hex.from_hex().unwrap();
let mut output = [0u8; 64];
let mut sosemanuk = Sosemanuk::new(key.as_ref(), nonce.as_ref());
sosemanuk.process(&input, &mut output);
let expected: &[u8] = expected_output.as_ref();
assert!(output.as_ref() == expected);
}
#[test]
fn test_sosemanuk_ecrypt_set_2_vector_90() {
let key = "5A5A5A5A5A5A5A5A5A5A5A5A5A5A5A5A5A5A5A5A5A5A5A5A5A5A5A5A5A5A5A5A".from_hex().unwrap();
let nonce = "00000000000000000000000000000000".from_hex().unwrap();
let input = [0u8; 64];
let expected_output_hex = "F5D7D72686322D1751AFD16A1DD98282D2B9A1EE0C305DF52F86AE1B831E90C22E2DE089CEE656A992736385D9135B823B3611098674BF820986A4342B89ABF7";
let expected_output = expected_output_hex.from_hex().unwrap();
let mut output = [0u8; 64];
let mut sosemanuk = Sosemanuk::new(key.as_ref(), nonce.as_ref());
sosemanuk.process(&input, &mut output);
let expected: &[u8] = expected_output.as_ref();
assert!(output.as_ref() == expected);
}
#[test]
fn test_sosemanuk_ecrypt_set_3_vector_135() {
let key = "8788898A8B8C8D8E8F909192939495969798999A9B9C9D9E9FA0A1A2A3A4".from_hex().unwrap();
let nonce = "00000000000000000000000000000000".from_hex().unwrap();
let input = [0u8; 64];
let expected_output_hex = "9D7EE5A10BBB0756D66B8DAA5AE08F41B05C9E7C6B13532EAA81F224282B61C66DEEE5AF6251DB26C49B865C5AD4250AE89787FC86C35409CF2986CF820293AA";
let expected_output = expected_output_hex.from_hex().unwrap();
let mut output = [0u8; 64];
let mut sosemanuk = Sosemanuk::new(key.as_ref(), nonce.as_ref());
sosemanuk.process