| use super::*; |
| |
| use std::hash::{Hash, Hasher}; |
| use std::{mem, slice}; |
| |
| // Hash just the bytes of the slice, without length prefix |
| struct Bytes<'a>(&'a [u8]); |
| |
| impl<'a> Hash for Bytes<'a> { |
| #[allow(unused_must_use)] |
| fn hash<H: Hasher>(&self, state: &mut H) { |
| for byte in self.0 { |
| state.write_u8(*byte); |
| } |
| } |
| } |
| |
| fn hash_with<T: Hash>(mut st: SipHasher128, x: &T) -> (u64, u64) { |
| x.hash(&mut st); |
| st.finish128() |
| } |
| |
| fn hash<T: Hash>(x: &T) -> (u64, u64) { |
| hash_with(SipHasher128::new_with_keys(0, 0), x) |
| } |
| |
| const TEST_VECTOR: [[u8; 16]; 64] = [ |
| [ |
| 0xa3, 0x81, 0x7f, 0x04, 0xba, 0x25, 0xa8, 0xe6, 0x6d, 0xf6, 0x72, 0x14, 0xc7, 0x55, 0x02, |
| 0x93, |
| ], |
| [ |
| 0xda, 0x87, 0xc1, 0xd8, 0x6b, 0x99, 0xaf, 0x44, 0x34, 0x76, 0x59, 0x11, 0x9b, 0x22, 0xfc, |
| 0x45, |
| ], |
| [ |
| 0x81, 0x77, 0x22, 0x8d, 0xa4, 0xa4, 0x5d, 0xc7, 0xfc, 0xa3, 0x8b, 0xde, 0xf6, 0x0a, 0xff, |
| 0xe4, |
| ], |
| [ |
| 0x9c, 0x70, 0xb6, 0x0c, 0x52, 0x67, 0xa9, 0x4e, 0x5f, 0x33, 0xb6, 0xb0, 0x29, 0x85, 0xed, |
| 0x51, |
| ], |
| [ |
| 0xf8, 0x81, 0x64, 0xc1, 0x2d, 0x9c, 0x8f, 0xaf, 0x7d, 0x0f, 0x6e, 0x7c, 0x7b, 0xcd, 0x55, |
| 0x79, |
| ], |
| [ |
| 0x13, 0x68, 0x87, 0x59, 0x80, 0x77, 0x6f, 0x88, 0x54, 0x52, 0x7a, 0x07, 0x69, 0x0e, 0x96, |
| 0x27, |
| ], |
| [ |
| 0x14, 0xee, 0xca, 0x33, 0x8b, 0x20, 0x86, 0x13, 0x48, 0x5e, 0xa0, 0x30, 0x8f, 0xd7, 0xa1, |
| 0x5e, |
| ], |
| [ |
| 0xa1, 0xf1, 0xeb, 0xbe, 0xd8, 0xdb, 0xc1, 0x53, 0xc0, 0xb8, 0x4a, 0xa6, 0x1f, 0xf0, 0x82, |
| 0x39, |
| ], |
| [ |
| 0x3b, 0x62, 0xa9, 0xba, 0x62, 0x58, 0xf5, 0x61, 0x0f, 0x83, 0xe2, 0x64, 0xf3, 0x14, 0x97, |
| 0xb4, |
| ], |
| [ |
| 0x26, 0x44, 0x99, 0x06, 0x0a, 0xd9, 0xba, 0xab, 0xc4, 0x7f, 0x8b, 0x02, 0xbb, 0x6d, 0x71, |
| 0xed, |
| ], |
| [ |
| 0x00, 0x11, 0x0d, 0xc3, 0x78, 0x14, 0x69, 0x56, 0xc9, 0x54, 0x47, 0xd3, 0xf3, 0xd0, 0xfb, |
| 0xba, |
| ], |
| [ |
| 0x01, 0x51, 0xc5, 0x68, 0x38, 0x6b, 0x66, 0x77, 0xa2, 0xb4, 0xdc, 0x6f, 0x81, 0xe5, 0xdc, |
| 0x18, |
| ], |
| [ |
| 0xd6, 0x26, 0xb2, 0x66, 0x90, 0x5e, 0xf3, 0x58, 0x82, 0x63, 0x4d, 0xf6, 0x85, 0x32, 0xc1, |
| 0x25, |
| ], |
| [ |
| 0x98, 0x69, 0xe2, 0x47, 0xe9, 0xc0, 0x8b, 0x10, 0xd0, 0x29, 0x93, 0x4f, 0xc4, 0xb9, 0x52, |
| 0xf7, |
| ], |
| [ |
| 0x31, 0xfc, 0xef, 0xac, 0x66, 0xd7, 0xde, 0x9c, 0x7e, 0xc7, 0x48, 0x5f, 0xe4, 0x49, 0x49, |
| 0x02, |
| ], |
| [ |
| 0x54, 0x93, 0xe9, 0x99, 0x33, 0xb0, 0xa8, 0x11, 0x7e, 0x08, 0xec, 0x0f, 0x97, 0xcf, 0xc3, |
| 0xd9, |
| ], |
| [ |
| 0x6e, 0xe2, 0xa4, 0xca, 0x67, 0xb0, 0x54, 0xbb, 0xfd, 0x33, 0x15, 0xbf, 0x85, 0x23, 0x05, |
| 0x77, |
| ], |
| [ |
| 0x47, 0x3d, 0x06, 0xe8, 0x73, 0x8d, 0xb8, 0x98, 0x54, 0xc0, 0x66, 0xc4, 0x7a, 0xe4, 0x77, |
| 0x40, |
| ], |
| [ |
| 0xa4, 0x26, 0xe5, 0xe4, 0x23, 0xbf, 0x48, 0x85, 0x29, 0x4d, 0xa4, 0x81, 0xfe, 0xae, 0xf7, |
| 0x23, |
| ], |
| [ |
| 0x78, 0x01, 0x77, 0x31, 0xcf, 0x65, 0xfa, 0xb0, 0x74, 0xd5, 0x20, 0x89, 0x52, 0x51, 0x2e, |
| 0xb1, |
| ], |
| [ |
| 0x9e, 0x25, 0xfc, 0x83, 0x3f, 0x22, 0x90, 0x73, 0x3e, 0x93, 0x44, 0xa5, 0xe8, 0x38, 0x39, |
| 0xeb, |
| ], |
| [ |
| 0x56, 0x8e, 0x49, 0x5a, 0xbe, 0x52, 0x5a, 0x21, 0x8a, 0x22, 0x14, 0xcd, 0x3e, 0x07, 0x1d, |
| 0x12, |
| ], |
| [ |
| 0x4a, 0x29, 0xb5, 0x45, 0x52, 0xd1, 0x6b, 0x9a, 0x46, 0x9c, 0x10, 0x52, 0x8e, 0xff, 0x0a, |
| 0xae, |
| ], |
| [ |
| 0xc9, 0xd1, 0x84, 0xdd, 0xd5, 0xa9, 0xf5, 0xe0, 0xcf, 0x8c, 0xe2, 0x9a, 0x9a, 0xbf, 0x69, |
| 0x1c, |
| ], |
| [ |
| 0x2d, 0xb4, 0x79, 0xae, 0x78, 0xbd, 0x50, 0xd8, 0x88, 0x2a, 0x8a, 0x17, 0x8a, 0x61, 0x32, |
| 0xad, |
| ], |
| [ |
| 0x8e, 0xce, 0x5f, 0x04, 0x2d, 0x5e, 0x44, 0x7b, 0x50, 0x51, 0xb9, 0xea, 0xcb, 0x8d, 0x8f, |
| 0x6f, |
| ], |
| [ |
| 0x9c, 0x0b, 0x53, 0xb4, 0xb3, 0xc3, 0x07, 0xe8, 0x7e, 0xae, 0xe0, 0x86, 0x78, 0x14, 0x1f, |
| 0x66, |
| ], |
| [ |
| 0xab, 0xf2, 0x48, 0xaf, 0x69, 0xa6, 0xea, 0xe4, 0xbf, 0xd3, 0xeb, 0x2f, 0x12, 0x9e, 0xeb, |
| 0x94, |
| ], |
| [ |
| 0x06, 0x64, 0xda, 0x16, 0x68, 0x57, 0x4b, 0x88, 0xb9, 0x35, 0xf3, 0x02, 0x73, 0x58, 0xae, |
| 0xf4, |
| ], |
| [ |
| 0xaa, 0x4b, 0x9d, 0xc4, 0xbf, 0x33, 0x7d, 0xe9, 0x0c, 0xd4, 0xfd, 0x3c, 0x46, 0x7c, 0x6a, |
| 0xb7, |
| ], |
| [ |
| 0xea, 0x5c, 0x7f, 0x47, 0x1f, 0xaf, 0x6b, 0xde, 0x2b, 0x1a, 0xd7, 0xd4, 0x68, 0x6d, 0x22, |
| 0x87, |
| ], |
| [ |
| 0x29, 0x39, 0xb0, 0x18, 0x32, 0x23, 0xfa, 0xfc, 0x17, 0x23, 0xde, 0x4f, 0x52, 0xc4, 0x3d, |
| 0x35, |
| ], |
| [ |
| 0x7c, 0x39, 0x56, 0xca, 0x5e, 0xea, 0xfc, 0x3e, 0x36, 0x3e, 0x9d, 0x55, 0x65, 0x46, 0xeb, |
| 0x68, |
| ], |
| [ |
| 0x77, 0xc6, 0x07, 0x71, 0x46, 0xf0, 0x1c, 0x32, 0xb6, 0xb6, 0x9d, 0x5f, 0x4e, 0xa9, 0xff, |
| 0xcf, |
| ], |
| [ |
| 0x37, 0xa6, 0x98, 0x6c, 0xb8, 0x84, 0x7e, 0xdf, 0x09, 0x25, 0xf0, 0xf1, 0x30, 0x9b, 0x54, |
| 0xde, |
| ], |
| [ |
| 0xa7, 0x05, 0xf0, 0xe6, 0x9d, 0xa9, 0xa8, 0xf9, 0x07, 0x24, 0x1a, 0x2e, 0x92, 0x3c, 0x8c, |
| 0xc8, |
| ], |
| [ |
| 0x3d, 0xc4, 0x7d, 0x1f, 0x29, 0xc4, 0x48, 0x46, 0x1e, 0x9e, 0x76, 0xed, 0x90, 0x4f, 0x67, |
| 0x11, |
| ], |
| [ |
| 0x0d, 0x62, 0xbf, 0x01, 0xe6, 0xfc, 0x0e, 0x1a, 0x0d, 0x3c, 0x47, 0x51, 0xc5, 0xd3, 0x69, |
| 0x2b, |
| ], |
| [ |
| 0x8c, 0x03, 0x46, 0x8b, 0xca, 0x7c, 0x66, 0x9e, 0xe4, 0xfd, 0x5e, 0x08, 0x4b, 0xbe, 0xe7, |
| 0xb5, |
| ], |
| [ |
| 0x52, 0x8a, 0x5b, 0xb9, 0x3b, 0xaf, 0x2c, 0x9c, 0x44, 0x73, 0xcc, 0xe5, 0xd0, 0xd2, 0x2b, |
| 0xd9, |
| ], |
| [ |
| 0xdf, 0x6a, 0x30, 0x1e, 0x95, 0xc9, 0x5d, 0xad, 0x97, 0xae, 0x0c, 0xc8, 0xc6, 0x91, 0x3b, |
| 0xd8, |
| ], |
| [ |
| 0x80, 0x11, 0x89, 0x90, 0x2c, 0x85, 0x7f, 0x39, 0xe7, 0x35, 0x91, 0x28, 0x5e, 0x70, 0xb6, |
| 0xdb, |
| ], |
| [ |
| 0xe6, 0x17, 0x34, 0x6a, 0xc9, 0xc2, 0x31, 0xbb, 0x36, 0x50, 0xae, 0x34, 0xcc, 0xca, 0x0c, |
| 0x5b, |
| ], |
| [ |
| 0x27, 0xd9, 0x34, 0x37, 0xef, 0xb7, 0x21, 0xaa, 0x40, 0x18, 0x21, 0xdc, 0xec, 0x5a, 0xdf, |
| 0x89, |
| ], |
| [ |
| 0x89, 0x23, 0x7d, 0x9d, 0xed, 0x9c, 0x5e, 0x78, 0xd8, 0xb1, 0xc9, 0xb1, 0x66, 0xcc, 0x73, |
| 0x42, |
| ], |
| [ |
| 0x4a, 0x6d, 0x80, 0x91, 0xbf, 0x5e, 0x7d, 0x65, 0x11, 0x89, 0xfa, 0x94, 0xa2, 0x50, 0xb1, |
| 0x4c, |
| ], |
| [ |
| 0x0e, 0x33, 0xf9, 0x60, 0x55, 0xe7, 0xae, 0x89, 0x3f, 0xfc, 0x0e, 0x3d, 0xcf, 0x49, 0x29, |
| 0x02, |
| ], |
| [ |
| 0xe6, 0x1c, 0x43, 0x2b, 0x72, 0x0b, 0x19, 0xd1, 0x8e, 0xc8, 0xd8, 0x4b, 0xdc, 0x63, 0x15, |
| 0x1b, |
| ], |
| [ |
| 0xf7, 0xe5, 0xae, 0xf5, 0x49, 0xf7, 0x82, 0xcf, 0x37, 0x90, 0x55, 0xa6, 0x08, 0x26, 0x9b, |
| 0x16, |
| ], |
| [ |
| 0x43, 0x8d, 0x03, 0x0f, 0xd0, 0xb7, 0xa5, 0x4f, 0xa8, 0x37, 0xf2, 0xad, 0x20, 0x1a, 0x64, |
| 0x03, |
| ], |
| [ |
| 0xa5, 0x90, 0xd3, 0xee, 0x4f, 0xbf, 0x04, 0xe3, 0x24, 0x7e, 0x0d, 0x27, 0xf2, 0x86, 0x42, |
| 0x3f, |
| ], |
| [ |
| 0x5f, 0xe2, 0xc1, 0xa1, 0x72, 0xfe, 0x93, 0xc4, 0xb1, 0x5c, 0xd3, 0x7c, 0xae, 0xf9, 0xf5, |
| 0x38, |
| ], |
| [ |
| 0x2c, 0x97, 0x32, 0x5c, 0xbd, 0x06, 0xb3, 0x6e, 0xb2, 0x13, 0x3d, 0xd0, 0x8b, 0x3a, 0x01, |
| 0x7c, |
| ], |
| [ |
| 0x92, 0xc8, 0x14, 0x22, 0x7a, 0x6b, 0xca, 0x94, 0x9f, 0xf0, 0x65, 0x9f, 0x00, 0x2a, 0xd3, |
| 0x9e, |
| ], |
| [ |
| 0xdc, 0xe8, 0x50, 0x11, 0x0b, 0xd8, 0x32, 0x8c, 0xfb, 0xd5, 0x08, 0x41, 0xd6, 0x91, 0x1d, |
| 0x87, |
| ], |
| [ |
| 0x67, 0xf1, 0x49, 0x84, 0xc7, 0xda, 0x79, 0x12, 0x48, 0xe3, 0x2b, 0xb5, 0x92, 0x25, 0x83, |
| 0xda, |
| ], |
| [ |
| 0x19, 0x38, 0xf2, 0xcf, 0x72, 0xd5, 0x4e, 0xe9, 0x7e, 0x94, 0x16, 0x6f, 0xa9, 0x1d, 0x2a, |
| 0x36, |
| ], |
| [ |
| 0x74, 0x48, 0x1e, 0x96, 0x46, 0xed, 0x49, 0xfe, 0x0f, 0x62, 0x24, 0x30, 0x16, 0x04, 0x69, |
| 0x8e, |
| ], |
| [ |
| 0x57, 0xfc, 0xa5, 0xde, 0x98, 0xa9, 0xd6, 0xd8, 0x00, 0x64, 0x38, 0xd0, 0x58, 0x3d, 0x8a, |
| 0x1d, |
| ], |
| [ |
| 0x9f, 0xec, 0xde, 0x1c, 0xef, 0xdc, 0x1c, 0xbe, 0xd4, 0x76, 0x36, 0x74, 0xd9, 0x57, 0x53, |
| 0x59, |
| ], |
| [ |
| 0xe3, 0x04, 0x0c, 0x00, 0xeb, 0x28, 0xf1, 0x53, 0x66, 0xca, 0x73, 0xcb, 0xd8, 0x72, 0xe7, |
| 0x40, |
| ], |
| [ |
| 0x76, 0x97, 0x00, 0x9a, 0x6a, 0x83, 0x1d, 0xfe, 0xcc, 0xa9, 0x1c, 0x59, 0x93, 0x67, 0x0f, |
| 0x7a, |
| ], |
| [ |
| 0x58, 0x53, 0x54, 0x23, 0x21, 0xf5, 0x67, 0xa0, 0x05, 0xd5, 0x47, 0xa4, 0xf0, 0x47, 0x59, |
| 0xbd, |
| ], |
| [ |
| 0x51, 0x50, 0xd1, 0x77, 0x2f, 0x50, 0x83, 0x4a, 0x50, 0x3e, 0x06, 0x9a, 0x97, 0x3f, 0xbd, |
| 0x7c, |
| ], |
| ]; |
| |
| // Test vector from reference implementation |
| #[test] |
| fn test_siphash_2_4_test_vector() { |
| let k0 = 0x_07_06_05_04_03_02_01_00; |
| let k1 = 0x_0f_0e_0d_0c_0b_0a_09_08; |
| |
| let mut input: Vec<u8> = Vec::new(); |
| |
| for i in 0..64 { |
| let out = hash_with(SipHasher128::new_with_keys(k0, k1), &Bytes(&input[..])); |
| let expected = ( |
| ((TEST_VECTOR[i][0] as u64) << 0) |
| | ((TEST_VECTOR[i][1] as u64) << 8) |
| | ((TEST_VECTOR[i][2] as u64) << 16) |
| | ((TEST_VECTOR[i][3] as u64) << 24) |
| | ((TEST_VECTOR[i][4] as u64) << 32) |
| | ((TEST_VECTOR[i][5] as u64) << 40) |
| | ((TEST_VECTOR[i][6] as u64) << 48) |
| | ((TEST_VECTOR[i][7] as u64) << 56), |
| ((TEST_VECTOR[i][8] as u64) << 0) |
| | ((TEST_VECTOR[i][9] as u64) << 8) |
| | ((TEST_VECTOR[i][10] as u64) << 16) |
| | ((TEST_VECTOR[i][11] as u64) << 24) |
| | ((TEST_VECTOR[i][12] as u64) << 32) |
| | ((TEST_VECTOR[i][13] as u64) << 40) |
| | ((TEST_VECTOR[i][14] as u64) << 48) |
| | ((TEST_VECTOR[i][15] as u64) << 56), |
| ); |
| |
| assert_eq!(out, expected); |
| input.push(i as u8); |
| } |
| } |
| |
| #[test] |
| #[cfg(target_arch = "arm")] |
| fn test_hash_usize() { |
| let val = 0xdeadbeef_deadbeef_u64; |
| assert!(hash(&(val as u64)) != hash(&(val as usize))); |
| assert_eq!(hash(&(val as u32)), hash(&(val as usize))); |
| } |
| #[test] |
| #[cfg(target_arch = "x86_64")] |
| fn test_hash_usize() { |
| let val = 0xdeadbeef_deadbeef_u64; |
| assert_eq!(hash(&(val as u64)), hash(&(val as usize))); |
| assert!(hash(&(val as u32)) != hash(&(val as usize))); |
| } |
| #[test] |
| #[cfg(target_arch = "x86")] |
| fn test_hash_usize() { |
| let val = 0xdeadbeef_deadbeef_u64; |
| assert!(hash(&(val as u64)) != hash(&(val as usize))); |
| assert_eq!(hash(&(val as u32)), hash(&(val as usize))); |
| } |
| |
| #[test] |
| fn test_hash_idempotent() { |
| let val64 = 0xdeadbeef_deadbeef_u64; |
| assert_eq!(hash(&val64), hash(&val64)); |
| let val32 = 0xdeadbeef_u32; |
| assert_eq!(hash(&val32), hash(&val32)); |
| } |
| |
| #[test] |
| fn test_hash_no_bytes_dropped_64() { |
| let val = 0xdeadbeef_deadbeef_u64; |
| |
| assert!(hash(&val) != hash(&zero_byte(val, 0))); |
| assert!(hash(&val) != hash(&zero_byte(val, 1))); |
| assert!(hash(&val) != hash(&zero_byte(val, 2))); |
| assert!(hash(&val) != hash(&zero_byte(val, 3))); |
| assert!(hash(&val) != hash(&zero_byte(val, 4))); |
| assert!(hash(&val) != hash(&zero_byte(val, 5))); |
| assert!(hash(&val) != hash(&zero_byte(val, 6))); |
| assert!(hash(&val) != hash(&zero_byte(val, 7))); |
| |
| fn zero_byte(val: u64, byte: usize) -> u64 { |
| assert!(byte < 8); |
| val & !(0xff << (byte * 8)) |
| } |
| } |
| |
| #[test] |
| fn test_hash_no_bytes_dropped_32() { |
| let val = 0xdeadbeef_u32; |
| |
| assert!(hash(&val) != hash(&zero_byte(val, 0))); |
| assert!(hash(&val) != hash(&zero_byte(val, 1))); |
| assert!(hash(&val) != hash(&zero_byte(val, 2))); |
| assert!(hash(&val) != hash(&zero_byte(val, 3))); |
| |
| fn zero_byte(val: u32, byte: usize) -> u32 { |
| assert!(byte < 4); |
| val & !(0xff << (byte * 8)) |
| } |
| } |
| |
| #[test] |
| fn test_hash_no_concat_alias() { |
| let s = ("aa", "bb"); |
| let t = ("aabb", ""); |
| let u = ("a", "abb"); |
| |
| assert!(s != t && t != u); |
| assert!(hash(&s) != hash(&t) && hash(&s) != hash(&u)); |
| |
| let u = [1, 0, 0, 0]; |
| let v = (&u[..1], &u[1..3], &u[3..]); |
| let w = (&u[..], &u[4..4], &u[4..4]); |
| |
| assert!(v != w); |
| assert!(hash(&v) != hash(&w)); |
| } |
| |
| #[test] |
| fn test_write_short_works() { |
| let test_usize = 0xd0c0b0a0usize; |
| let mut h1 = SipHasher128::new_with_keys(0, 0); |
| h1.write_usize(test_usize); |
| h1.write(b"bytes"); |
| h1.write(b"string"); |
| h1.write_u8(0xFFu8); |
| h1.write_u8(0x01u8); |
| let mut h2 = SipHasher128::new_with_keys(0, 0); |
| h2.write(unsafe { |
| slice::from_raw_parts(&test_usize as *const _ as *const u8, mem::size_of::<usize>()) |
| }); |
| h2.write(b"bytes"); |
| h2.write(b"string"); |
| h2.write(&[0xFFu8, 0x01u8]); |
| assert_eq!(h1.finish128(), h2.finish128()); |
| } |