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pub use blake2xb::{Blake2xb}; pub use buffered::{Blake2b}; pub use hash::{Hash}; pub use parameter_block::{ParameterBlock}; pub mod unbuffered; pub mod blake2xb; mod buffered; mod hash; mod parameter_block; mod simd; mod slice_ext; const IV: [u64; 8] = [0x6A09E667F3BCC908, 0xBB67AE8584CAA73B, 0x3C6EF372FE94F82B, 0xA54FF53A5F1D36F1, 0x510E527FADE682D1, 0x9B05688C2B3E6C1F, 0x1F83D9ABFB41BD6B, 0x5BE0CD19137E2179]; pub fn compress(buffer: &[u64; 16], hash: &mut [u64; 8], counter: (u64, u64), f: (u64, u64)) { use simd::u64x4; const SIGMA: [[usize; 16]; 10] = [ [ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15], [14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3], [11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4], [ 7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8], [ 9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13], [ 2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9], [12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11], [13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10], [ 6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5], [10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13 , 0] ]; #[inline(always)] fn round(v: &mut [u64x4; 4], buf: &[u64; 16], s: [usize; 16]) { #[inline(always)] fn quarter_round(v: &mut [u64x4; 4], rd: u64, rb: u64, m: u64x4) { v[0] = v[0] + v[1] + m; v[3] = (v[3] ^ v[0]).rotate_right(rd); v[2] = v[2] + v[3]; v[1] = (v[1] ^ v[2]).rotate_right(rb); } #[inline(always)] fn shuffle(v: &mut [u64x4; 4]) { v[1] = v[1].shuffle_left_1(); v[2] = v[2].shuffle_left_2(); v[3] = v[3].shuffle_left_3(); } #[inline(always)] fn unshuffle(v: &mut [u64x4; 4]) { v[1] = v[1].shuffle_right_1(); v[2] = v[2].shuffle_right_2(); v[3] = v[3].shuffle_right_3(); } quarter_round(v, 32, 24, u64x4(buf[s[0]], buf[s[ 2]], buf[s[ 4]], buf[s[ 6]])); quarter_round(v, 16, 63, u64x4(buf[s[1]], buf[s[ 3]], buf[s[ 5]], buf[s[ 7]])); shuffle(v); quarter_round(v, 32, 24, u64x4(buf[s[8]], buf[s[10]], buf[s[12]], buf[s[14]])); quarter_round(v, 16, 63, u64x4(buf[s[9]], buf[s[11]], buf[s[13]], buf[s[15]])); unshuffle(v); } let mut v = [ u64x4(hash[0], hash[1], hash[2], hash[3]), u64x4(hash[4], hash[5], hash[6], hash[7]), u64x4(IV[0], IV[1], IV[2], IV[3]), u64x4(IV[4] ^ counter.0, IV[5] ^ counter.1, IV[6] ^ f.0, IV[7] ^ f.1) ]; round(&mut v, buffer, SIGMA[0]); round(&mut v, buffer, SIGMA[1]); round(&mut v, buffer, SIGMA[2]); round(&mut v, buffer, SIGMA[3]); round(&mut v, buffer, SIGMA[4]); round(&mut v, buffer, SIGMA[5]); round(&mut v, buffer, SIGMA[6]); round(&mut v, buffer, SIGMA[7]); round(&mut v, buffer, SIGMA[8]); round(&mut v, buffer, SIGMA[9]); round(&mut v, buffer, SIGMA[0]); round(&mut v, buffer, SIGMA[1]); hash[0] ^= v[0].0 ^ v[2].0; hash[1] ^= v[0].1 ^ v[2].1; hash[2] ^= v[0].2 ^ v[2].2; hash[3] ^= v[0].3 ^ v[2].3; hash[4] ^= v[1].0 ^ v[3].0; hash[5] ^= v[1].1 ^ v[3].1; hash[6] ^= v[1].2 ^ v[3].2; hash[7] ^= v[1].3 ^ v[3].3; } pub fn blake2b(len: usize, data: &[u8]) -> Hash { let mut blake2b = Blake2b::new(len); blake2b.update(data); blake2b.finish() } pub fn blake2b_keyed(len: usize, key: &[u8], data: &[u8]) -> Hash { let mut blake2b = Blake2b::keyed(len, key); blake2b.update(data); blake2b.finish() } pub fn selftest() -> bool { const RESULT: [u8; 32] = [ 0xC2, 0x3A, 0x78, 0x00, 0xD9, 0x81, 0x23, 0xBD, 0x10, 0xF5, 0x06, 0xC6, 0x1E, 0x29, 0xDA, 0x56, 0x03, 0xD7, 0x63, 0xB8, 0xBB, 0xAD, 0x2E, 0x73, 0x7F, 0x5E, 0x76, 0x5A, 0x7B, 0xCC, 0xD4, 0x75 ]; fn selftest_seq(out: &mut [u8]) { let mut a = 0xDEAD4BADu32.wrapping_mul(out.len() as u32); let mut b = 1; for i in 0..out.len() { let t = a.wrapping_add(b); a = b; b = t; out[i] = (t >> 24) as u8; } } let mut data = [0u8; 1024]; let mut key = [0u8; 64]; let mut hasher = Blake2b::new(32); for &i in &[20, 32, 48, 64] { selftest_seq(&mut key[..i]); for &j in &[0, 3, 128, 129, 255, 1024] { selftest_seq(&mut data[..j]); hasher.update(&blake2b(i, &data[..j])); hasher.update(&blake2b_keyed(i, &key[..i], &data[..j])); } } *hasher.finish() == RESULT }