Completely functional implementation with tests
This commit is contained in:
Sean Bowe
parent
a0d56f3451
commit
4eac6417c3
174
src/keccak.rs
174
src/keccak.rs
@ -108,30 +108,8 @@ fn keccakf(st: &mut [Chunk], rounds: usize)
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}
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}
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fn temporary_shim(state: &mut [Byte]) {
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assert_eq!(state.len(), 200);
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let mut chunks = Vec::with_capacity(25);
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for i in 0..25 {
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chunks.push(Chunk::from(0x0000000000000000));
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}
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for (chunk_bit, input_bit) in chunks.iter_mut().flat_map(|c| c.bits.iter_mut())
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.zip(state.iter().flat_map(|c| c.bits.iter()))
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{
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*chunk_bit = input_bit.clone();
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}
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keccakf(&mut chunks, 24);
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for (chunk_bit, input_bit) in chunks.iter().flat_map(|c| c.bits.iter())
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.zip(state.iter_mut().flat_map(|c| c.bits.iter_mut()))
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{
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*input_bit = chunk_bit.clone();
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}
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}
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fn sha3_256(message: &[Byte]) -> Vec<Byte> {
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// As defined by FIPS202
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keccak(1088, 512, message, 0x06, 32)
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}
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@ -191,36 +169,30 @@ fn keccak(rate: usize, capacity: usize, mut input: &[Byte], delimited_suffix: u8
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output
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}
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fn keccak256(input: &[Byte]) -> Vec<Bit> {
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assert_eq!(input.len(), 144);
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fn temporary_shim(state: &mut [Byte]) {
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assert_eq!(state.len(), 200);
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let mut st: Vec<Chunk> = Some(Chunk::from(0)).into_iter().cycle().take(25).collect();
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println!("RUNNING TEMPORARY SHIM!");
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let mdlen = 32; // 256 bit
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let rsiz = 200 - 2 * mdlen;
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let rsizw = rsiz / 8;
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for i in 0..rsizw {
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let j = i * 8;
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st[i] = st[i].xor(&Chunk::from(&input[j..(j+8)]));
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let mut chunks = Vec::with_capacity(25);
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for i in 0..25 {
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chunks.push(Chunk::from(0x0000000000000000));
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}
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keccakf(&mut st, 24);
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let mut v = vec![];
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for i in 0..4 {
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// due to endianness...
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let tmp: Vec<_> = st[i].bits.chunks(8)
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.rev()
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.flat_map(|x| x.iter())
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.map(|x| x.clone())
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.collect();
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v.extend_from_slice(&tmp);
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for (chunk_bit, input_bit) in chunks.iter_mut().flat_map(|c| c.bits.iter_mut())
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//.zip(state.iter().flat_map(|c| c.bits.iter()))
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.zip(state.chunks(8).flat_map(|e| e.iter().rev()).flat_map(|c| c.bits.iter()))
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{
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*chunk_bit = input_bit.clone();
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}
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assert!(v.len() == 256);
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keccakf(&mut chunks, 24);
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v
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for (chunk_bit, input_bit) in chunks.iter().flat_map(|c| c.bits.iter())
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.zip(state.chunks_mut(8).flat_map(|e| e.iter_mut().rev()).flat_map(|c| c.bits.iter_mut()))
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{
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*input_bit = chunk_bit.clone();
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}
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}
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#[derive(Clone)]
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@ -377,95 +349,51 @@ impl Bit {
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}
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#[test]
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fn test_shim() {
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let mut chunks: Vec<_> = (0..25).map(|_| Chunk::from(0xABCDEF0123456789)).collect();
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keccakf(&mut chunks, 24);
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fn test_sha3_256() {
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let test_vector: Vec<(Vec<Byte>, [u8; 32])> = vec![
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(vec![Bit::byte(0x30)],
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[0xf9,0xe2,0xea,0xaa,0x42,0xd9,0xfe,0x9e,0x55,0x8a,0x9b,0x8e,0xf1,0xbf,0x36,0x6f,0x19,0x0a,0xac,0xaa,0x83,0xba,0xd2,0x64,0x1e,0xe1,0x06,0xe9,0x04,0x10,0x96,0xe4]
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),
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(vec![Bit::byte(0x30),Bit::byte(0x30)],
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[0x2e,0x16,0xaa,0xb4,0x83,0xcb,0x95,0x57,0x7c,0x50,0xd3,0x8c,0x8d,0x0d,0x70,0x40,0xf4,0x67,0x26,0x83,0x23,0x84,0x46,0xc9,0x90,0xba,0xbb,0xca,0x5a,0xe1,0x33,0xc8]
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),
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((0..64).map(|_| Bit::byte(0x30)).collect::<Vec<_>>(),
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[0xc6,0xfd,0xd7,0xa7,0xf7,0x08,0x62,0xb3,0x6a,0x26,0xcc,0xd1,0x47,0x52,0x26,0x80,0x61,0xe9,0x81,0x03,0x29,0x9b,0x28,0xfe,0x77,0x63,0xbd,0x96,0x29,0x92,0x6f,0x4b]
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),
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((0..128).map(|_| Bit::byte(0x30)).collect::<Vec<_>>(),
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[0x99,0x9d,0xb4,0xd4,0x28,0x7b,0x52,0x15,0x20,0x8d,0x11,0xe4,0x0a,0x27,0xca,0x54,0xac,0xa0,0x09,0xb2,0x5c,0x4f,0x7a,0xb9,0x1a,0xd8,0xaa,0x93,0x60,0xf0,0x63,0x71]
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),
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((0..256).map(|_| Bit::byte(0x30)).collect::<Vec<_>>(),
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[0x11,0xea,0x74,0x37,0x7b,0x74,0xf1,0x53,0x9f,0x2e,0xd9,0x0a,0xb8,0xca,0x9e,0xb1,0xe0,0x70,0x8a,0x4b,0xfb,0xad,0x4e,0x81,0xcc,0x77,0xd9,0xa1,0x61,0x9a,0x10,0xdb]
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),
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((0..512).map(|_| Bit::byte(0x30)).collect::<Vec<_>>(),
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[0x1c,0x80,0x1b,0x16,0x3a,0x2a,0xbe,0xd0,0xe8,0x07,0x1e,0x7f,0xf2,0x60,0x4e,0x98,0x11,0x22,0x80,0x54,0x14,0xf3,0xc8,0xfd,0x96,0x59,0x5d,0x7e,0xe1,0xd6,0x54,0xe2]
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),
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];
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let mut bytes: Vec<Byte> = (0..200).map(|i| {
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match i % 8 {
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0 => Bit::byte(0xAB),
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1 => Bit::byte(0xCD),
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2 => Bit::byte(0xEF),
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3 => Bit::byte(0x01),
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4 => Bit::byte(0x23),
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5 => Bit::byte(0x45),
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6 => Bit::byte(0x67),
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7 => Bit::byte(0x89),
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_ => unreachable!()
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}
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}).collect();
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for (i, &(ref message, ref expected)) in test_vector.iter().enumerate() {
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let result: Vec<u8> = sha3_256(message).into_iter().map(|a| a.grab()).collect();
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temporary_shim(&mut bytes);
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for (i, bit) in bytes.iter().flat_map(|c| c.bits.iter()).enumerate() {
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//println!("i = {}", i);
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if &chunks[i / 64].bits[i % 64] != bit {
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panic!("fuck.");
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if &*result != expected {
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print!("Expected: ");
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for i in result.iter() {
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print!("0x{:02x},", i);
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}
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panic!("Hash {} failed!", i+1);
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} else {
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println!("--- HASH {} SUCCESS ---", i+1);
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}
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}
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}
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#[test]
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fn byte_grab_works() {
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{
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let b = Bit::byte(0xef);
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assert_eq!(0xef, b.grab());
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}
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}
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#[test]
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fn woohoo() {
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let message = [Bit::byte(0x30)];
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let test = sha3_256(&message);
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for i in 0..32 {
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print!("{:02x} ", test[i].grab());
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}
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println!("");
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panic!("fuck");
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}
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#[test]
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fn testsha3() {
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let bb = |x: usize| {
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match x % 5 {
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0 => Bit::byte(0xBB),
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1 => Bit::byte(0x3B),
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2 => Bit::byte(0x1B),
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3 => Bit::byte(0x0B),
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4 => Bit::byte(0xFF),
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_ => unreachable!()
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}
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};
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let msg: Vec<Byte> = (0..144).map(bb).collect();
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let result = keccak256(&msg);
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let correct_result: [u64; 4] =
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[0x6746c5f4559bc1dd,
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0x49d08e1adcf3be12,
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0x80a2fcca8ce98789,
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0x659f40a0053e2989
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];
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for i in 0..4 {
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let j = i * 64;
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let ours = Chunk::from(&result[j..(j+64)]);
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let correct = Chunk::from(correct_result[i]);
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assert!(ours == correct);
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}
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}
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#[test]
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fn testff() {
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fn test_keccakf() {
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let base = Chunk::from(0xABCDEF0123456789);
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let mut a: Vec<Chunk> = (0..25).map(|i| base.rotl(i*4)).collect();
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keccakf(&mut a, 24);
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const TEST_VECTOR: [u64; 25] = [
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0x4c8948fcb6616044,
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0x75642a21f8bd1299,
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@ -1,24 +0,0 @@
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# Makefile
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# 19-Nov-11 Markku-Juhani O. Saarinen <mjos@iki.fi>
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BINARY = kctest
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OBJS = keccak.o main.o
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DIST = readable_keccak
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CC = gcc
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CFLAGS = -Wall -O
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LIBS =
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LDFLAGS =
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INCLUDES =
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$(BINARY): $(OBJS)
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$(CC) $(LDFLAGS) -o $(BINARY) $(OBJS) $(LIBS)
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.c.o:
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$(CC) $(CFLAGS) $(INCLUDES) -c $< -o $@
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clean:
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rm -rf $(DIST).tgz $(OBJS) $(BINARY) *~
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dist: clean
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cd ..; tar cfvz $(DIST)/$(DIST).tgz $(DIST)/*
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@ -1,109 +0,0 @@
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// keccak.c
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// 19-Nov-11 Markku-Juhani O. Saarinen <mjos@iki.fi>
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// A baseline Keccak (3rd round) implementation.
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#include "keccak.h"
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const uint64_t keccakf_rndc[24] =
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{
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0x0000000000000001, 0x0000000000008082, 0x800000000000808a,
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0x8000000080008000, 0x000000000000808b, 0x0000000080000001,
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0x8000000080008081, 0x8000000000008009, 0x000000000000008a,
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0x0000000000000088, 0x0000000080008009, 0x000000008000000a,
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0x000000008000808b, 0x800000000000008b, 0x8000000000008089,
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0x8000000000008003, 0x8000000000008002, 0x8000000000000080,
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0x000000000000800a, 0x800000008000000a, 0x8000000080008081,
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0x8000000000008080, 0x0000000080000001, 0x8000000080008008
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};
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const int keccakf_rotc[24] =
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{
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1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 2, 14,
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27, 41, 56, 8, 25, 43, 62, 18, 39, 61, 20, 44
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};
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const int keccakf_piln[24] =
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{
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10, 7, 11, 17, 18, 3, 5, 16, 8, 21, 24, 4,
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15, 23, 19, 13, 12, 2, 20, 14, 22, 9, 6, 1
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};
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// update the state with given number of rounds
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void keccakf(uint64_t st[25], int rounds)
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{
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int i, j, round;
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uint64_t t, bc[5];
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for (round = 0; round < rounds; round++) {
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// Theta
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for (i = 0; i < 5; i++)
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bc[i] = st[i] ^ st[i + 5] ^ st[i + 10] ^ st[i + 15] ^ st[i + 20];
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for (i = 0; i < 5; i++) {
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t = bc[(i + 4) % 5] ^ ROTL64(bc[(i + 1) % 5], 1);
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for (j = 0; j < 25; j += 5)
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st[j + i] ^= t;
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}
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// Rho Pi
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t = st[1];
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for (i = 0; i < 24; i++) {
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j = keccakf_piln[i];
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bc[0] = st[j];
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st[j] = ROTL64(t, keccakf_rotc[i]);
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t = bc[0];
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}
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// Chi
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for (j = 0; j < 25; j += 5) {
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for (i = 0; i < 5; i++)
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bc[i] = st[j + i];
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for (i = 0; i < 5; i++)
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st[j + i] ^= (~bc[(i + 1) % 5]) & bc[(i + 2) % 5];
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}
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// Iota
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st[0] ^= keccakf_rndc[round];
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}
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}
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// compute a keccak hash (md) of given byte length from "in"
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int keccak(const uint8_t *in, int inlen, uint8_t *md, int mdlen)
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{
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uint64_t st[25];
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//uint8_t temp[144];
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int i, rsiz, rsizw;
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rsiz = 200 - 2 * mdlen;
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rsizw = rsiz / 8;
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memset(st, 0, sizeof(st));
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/*
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for ( ; inlen >= rsiz; inlen -= rsiz, in += rsiz) {
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for (i = 0; i < rsizw; i++)
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st[i] ^= ((uint64_t *) in)[i];
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keccakf(st, KECCAK_ROUNDS);
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}
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// last block and padding
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memcpy(temp, in, inlen);
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temp[inlen++] = 1;
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memset(temp + inlen, 0, rsiz - inlen);
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temp[rsiz - 1] |= 0x80;
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*/
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for (i = 0; i < rsizw; i++) {
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st[i] ^= ((uint64_t *) in)[i];
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}
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keccakf(st, KECCAK_ROUNDS);
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memcpy(md, st, mdlen);
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return 0;
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}
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@ -1,25 +0,0 @@
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// keccak.h
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// 19-Nov-11 Markku-Juhani O. Saarinen <mjos@iki.fi>
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#ifndef KECCAK_H
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#define KECCAK_H
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#include <stdint.h>
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#include <string.h>
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#ifndef KECCAK_ROUNDS
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#define KECCAK_ROUNDS 24
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#endif
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#ifndef ROTL64
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#define ROTL64(x, y) (((x) << (y)) | ((x) >> (64 - (y))))
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#endif
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// compute a keccak hash (md) of given byte length from "in"
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int keccak(const uint8_t *in, int inlen, uint8_t *md, int mdlen);
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// update the state
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void keccakf(uint64_t st[25], int norounds);
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#endif
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@ -1,165 +0,0 @@
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// main.c
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// 19-Nov-11 Markku-Juhani O. Saarinen <mjos@iki.fi>
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#include <stdio.h>
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#include <string.h>
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#include "keccak.h"
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#include <inttypes.h>
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// test each length
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typedef struct {
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int mdlen;
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char *msgstr;
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uint8_t md[64];
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} test_triplet_t;
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// returns zero on success, nonzero + stderr messages on failure
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int keccak_test()
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{
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test_triplet_t testvec[4] = {
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{
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28, "Keccak-224 Test Hash", {
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0x30, 0x04, 0x5B, 0x34, 0x94, 0x6E, 0x1B, 0x2E,
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0x09, 0x16, 0x13, 0x36, 0x2F, 0xD2, 0x2A, 0xA0,
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0x8E, 0x2B, 0xEA, 0xFE, 0xC5, 0xE8, 0xDA, 0xEE,
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0x42, 0xC2, 0xE6, 0x65 }
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}, {
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32, "Keccak-256 Test Hash", {
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0xA8, 0xD7, 0x1B, 0x07, 0xF4, 0xAF, 0x26, 0xA4,
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0xFF, 0x21, 0x02, 0x7F, 0x62, 0xFF, 0x60, 0x26,
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0x7F, 0xF9, 0x55, 0xC9, 0x63, 0xF0, 0x42, 0xC4,
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0x6D, 0xA5, 0x2E, 0xE3, 0xCF, 0xAF, 0x3D, 0x3C }
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}, {
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48, "Keccak-384 Test Hash", {
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0xE2, 0x13, 0xFD, 0x74, 0xAF, 0x0C, 0x5F, 0xF9,
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0x1B, 0x42, 0x3C, 0x8B, 0xCE, 0xEC, 0xD7, 0x01,
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0xF8, 0xDD, 0x64, 0xEC, 0x18, 0xFD, 0x6F, 0x92,
|
||||
0x60, 0xFC, 0x9E, 0xC1, 0xED, 0xBD, 0x22, 0x30,
|
||||
0xA6, 0x90, 0x86, 0x65, 0xBC, 0xD9, 0xFB, 0xF4,
|
||||
0x1A, 0x99, 0xA1, 0x8A, 0x7D, 0x9E, 0x44, 0x6E }
|
||||
}, {
|
||||
64, "Keccak-512 Test Hash", {
|
||||
0x96, 0xEE, 0x47, 0x18, 0xDC, 0xBA, 0x3C, 0x74,
|
||||
0x61, 0x9B, 0xA1, 0xFA, 0x7F, 0x57, 0xDF, 0xE7,
|
||||
0x76, 0x9D, 0x3F, 0x66, 0x98, 0xA8, 0xB3, 0x3F,
|
||||
0xA1, 0x01, 0x83, 0x89, 0x70, 0xA1, 0x31, 0xE6,
|
||||
0x21, 0xCC, 0xFD, 0x05, 0xFE, 0xFF, 0xBC, 0x11,
|
||||
0x80, 0xF2, 0x63, 0xC2, 0x7F, 0x1A, 0xDA, 0xB4,
|
||||
0x60, 0x95, 0xD6, 0xF1, 0x25, 0x33, 0x14, 0x72,
|
||||
0x4B, 0x5C, 0xBF, 0x78, 0x28, 0x65, 0x8E, 0x6A }
|
||||
}
|
||||
};
|
||||
int i, fails;
|
||||
uint8_t md[64];
|
||||
|
||||
fails = 0;
|
||||
for (i = 0; i < 4; i++) {
|
||||
|
||||
keccak((uint8_t *) testvec[i].msgstr,
|
||||
strlen(testvec[i].msgstr),
|
||||
md, testvec[i].mdlen);
|
||||
|
||||
if (memcmp(md, testvec[i].md, testvec[i].mdlen)) {
|
||||
fails++;
|
||||
fprintf(stderr, "Keccak-%d FAILED.", testvec[i].mdlen * 8);
|
||||
}
|
||||
}
|
||||
|
||||
return fails;
|
||||
}
|
||||
|
||||
// main
|
||||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
/*
|
||||
if (keccak_test() == 0)
|
||||
printf("Keccak self-test OK!\n");
|
||||
|
||||
return 0;
|
||||
*/
|
||||
/*
|
||||
uint8_t in[144] = {
|
||||
0xBB, 0x3B, 0x1B, 0x0B, 0xFF,
|
||||
0xBB, 0x3B, 0x1B, 0x0B, 0xFF,
|
||||
0xBB, 0x3B, 0x1B, 0x0B, 0xFF,
|
||||
0xBB, 0x3B, 0x1B, 0x0B, 0xFF,
|
||||
0xBB, 0x3B, 0x1B, 0x0B, 0xFF,
|
||||
0xBB, 0x3B, 0x1B, 0x0B, 0xFF,
|
||||
0xBB, 0x3B, 0x1B, 0x0B, 0xFF,
|
||||
0xBB, 0x3B, 0x1B, 0x0B, 0xFF,
|
||||
0xBB, 0x3B, 0x1B, 0x0B, 0xFF,
|
||||
0xBB, 0x3B, 0x1B, 0x0B, 0xFF,
|
||||
0xBB, 0x3B, 0x1B, 0x0B, 0xFF,
|
||||
0xBB, 0x3B, 0x1B, 0x0B, 0xFF,
|
||||
0xBB, 0x3B, 0x1B, 0x0B, 0xFF,
|
||||
0xBB, 0x3B, 0x1B, 0x0B, 0xFF,
|
||||
0xBB, 0x3B, 0x1B, 0x0B, 0xFF,
|
||||
0xBB, 0x3B, 0x1B, 0x0B, 0xFF,
|
||||
0xBB, 0x3B, 0x1B, 0x0B, 0xFF,
|
||||
0xBB, 0x3B, 0x1B, 0x0B, 0xFF,
|
||||
0xBB, 0x3B, 0x1B, 0x0B, 0xFF,
|
||||
0xBB, 0x3B, 0x1B, 0x0B, 0xFF,
|
||||
0xBB, 0x3B, 0x1B, 0x0B, 0xFF,
|
||||
0xBB, 0x3B, 0x1B, 0x0B, 0xFF,
|
||||
0xBB, 0x3B, 0x1B, 0x0B, 0xFF,
|
||||
0xBB, 0x3B, 0x1B, 0x0B, 0xFF,
|
||||
0xBB, 0x3B, 0x1B, 0x0B, 0xFF,
|
||||
0xBB, 0x3B, 0x1B, 0x0B, 0xFF,
|
||||
0xBB, 0x3B, 0x1B, 0x0B, 0xFF,
|
||||
0xBB, 0x3B, 0x1B, 0x0B, 0xFF,
|
||||
0xBB, 0x3B, 0x1B, 0x0B
|
||||
};
|
||||
|
||||
uint8_t md[32] = {0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0
|
||||
};
|
||||
|
||||
keccak(in, 144, md, 32);
|
||||
|
||||
for (int i = 0; i < 32; i++) {
|
||||
printf("%02x ", md[i]);
|
||||
}
|
||||
*/
|
||||
uint64_t st[25] = {
|
||||
0xabcdef0123456789,
|
||||
0xbcdef0123456789a,
|
||||
0xcdef0123456789ab,
|
||||
0xdef0123456789abc,
|
||||
0xef0123456789abcd,
|
||||
|
||||
0xf0123456789abcde,
|
||||
0x0123456789abcdef,
|
||||
0x123456789abcdef0,
|
||||
0x23456789abcdef01,
|
||||
0x3456789abcdef012,
|
||||
|
||||
0x456789abcdef0123,
|
||||
0x56789abcdef01234,
|
||||
0x6789abcdef012345,
|
||||
0x789abcdef0123456,
|
||||
0x89abcdef01234567,
|
||||
|
||||
0x9abcdef012345678,
|
||||
0xabcdef0123456789,
|
||||
0xbcdef0123456789a,
|
||||
0xcdef0123456789ab,
|
||||
0xdef0123456789abc,
|
||||
|
||||
0xef0123456789abcd,
|
||||
0xf0123456789abcde,
|
||||
0x0123456789abcdef,
|
||||
0x123456789abcdef0,
|
||||
0x23456789abcdef01,
|
||||
};
|
||||
|
||||
keccakf(st, 24);
|
||||
|
||||
for (int i = 0; i < 25; i++) {
|
||||
printf("%" PRIx64 "\n", st[i]);
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user