ref: e5b424be893e7f771456a548ab66e1bcb7ed50d3
parent: 1ee90265d5f764cb54b49531c4b247c5f404491c
author: Lucas Gabriel Vuotto <lvuotto92@gmail.com>
date: Thu Sep 7 21:19:41 EDT 2017
Add siphash-2-4 implementation and tests Signed-off-by: Lucas Gabriel Vuotto <lvuotto92@gmail.com>
--- a/lib/std/hashfuncs.myr
+++ b/lib/std/hashfuncs.myr
@@ -1,6 +1,7 @@
use "alloc"
use "chartype"
use "die"
+use "getint"
use "sleq"
use "slpush"
use "types"
@@ -20,6 +21,7 @@
generic inteq : (a : @a::(integral,numeric), b : @a::(integral,numeric) -> bool)
const murmurhash2 : (data : byte[:], seed : uint32 -> uint32)
+ const siphash24 : (data : byte[:], seed : byte[16] -> uint64)
generic slhash : (sl : @a[:] -> uint32)
;;
@@ -140,4 +142,62 @@
h ^= h >> 15
-> h
+}
+
+const rotl = {x, n -> uint64; -> (x << n) | (x >> (64 - n))}+
+const sipround = {v0, v1, v2, v3 -> (uint64, uint64, uint64, uint64)+ v0 += v1
+ v1 = rotl(v1, 13)
+ v1 ^= v0
+ v0 = rotl(v0, 32)
+ v2 += v3
+ v3 = rotl(v3, 16)
+ v3 ^= v2
+
+ v2 += v1
+ v1 = rotl(v1, 17)
+ v1 ^= v2
+ v2 = rotl(v2, 32)
+ v0 += v3
+ v3 = rotl(v3, 21)
+ v3 ^= v0
+
+ -> (v0, v1, v2, v3)
+}
+
+const siphash24 = {data, seed+ var k0, k1, m, v0, v1, v2, v3, w
+ var tail : byte[8] = [0, 0, 0, 0, 0, 0, 0, 0]
+
+ k0 = std.getle64(seed[0:8])
+ k1 = std.getle64(seed[8:16])
+ v0 = k0 ^ 0x736f6d6570736575
+ v1 = k1 ^ 0x646f72616e646f6d
+ v2 = k0 ^ 0x6c7967656e657261
+ v3 = k1 ^ 0x7465646279746573
+ w = (data.len + 8) / 8 - 1
+ for var i = 0; i < w; i++
+ m = std.getle64(data[8 * i:8 * (i + 1)])
+ v3 ^= m
+ (v0, v1, v2, v3) = sipround(v0, v1, v2, v3)
+ (v0, v1, v2, v3) = sipround(v0, v1, v2, v3)
+ v0 ^= m
+ ;;
+ for var i = 0; i < data.len % 8; i++
+ tail[i] = data[8 * w + i]
+ ;;
+ tail[7] = (data.len % 256 : byte)
+ m = std.getle64(tail[:])
+ v3 ^= m
+ (v0, v1, v2, v3) = sipround(v0, v1, v2, v3)
+ (v0, v1, v2, v3) = sipround(v0, v1, v2, v3)
+ v0 ^= m
+
+ v2 ^= 0xff
+ (v0, v1, v2, v3) = sipround(v0, v1, v2, v3)
+ (v0, v1, v2, v3) = sipround(v0, v1, v2, v3)
+ (v0, v1, v2, v3) = sipround(v0, v1, v2, v3)
+ (v0, v1, v2, v3) = sipround(v0, v1, v2, v3)
+ -> v0 ^ v1 ^ v2 ^ v3
}
--- a/lib/std/test/hashfuncs.myr
+++ b/lib/std/test/hashfuncs.myr
@@ -27,6 +27,91 @@
[.name="murmurhash test", .fn={ctx testr.check(ctx, std.murmurhash2("foobar", 1234) == 2203212445, "wrong murmurhash value")}],
+ [.name="siphash test", .fn={ctx+ siphashreferencetestvector(ctx)
+ }],
][:])
+}
+
+const siphashtestvector : byte[8][64] = [
+ [ 0x31, 0x0e, 0x0e, 0xdd, 0x47, 0xdb, 0x6f, 0x72, ],
+ [ 0xfd, 0x67, 0xdc, 0x93, 0xc5, 0x39, 0xf8, 0x74, ],
+ [ 0x5a, 0x4f, 0xa9, 0xd9, 0x09, 0x80, 0x6c, 0x0d, ],
+ [ 0x2d, 0x7e, 0xfb, 0xd7, 0x96, 0x66, 0x67, 0x85, ],
+ [ 0xb7, 0x87, 0x71, 0x27, 0xe0, 0x94, 0x27, 0xcf, ],
+ [ 0x8d, 0xa6, 0x99, 0xcd, 0x64, 0x55, 0x76, 0x18, ],
+ [ 0xce, 0xe3, 0xfe, 0x58, 0x6e, 0x46, 0xc9, 0xcb, ],
+ [ 0x37, 0xd1, 0x01, 0x8b, 0xf5, 0x00, 0x02, 0xab, ],
+ [ 0x62, 0x24, 0x93, 0x9a, 0x79, 0xf5, 0xf5, 0x93, ],
+ [ 0xb0, 0xe4, 0xa9, 0x0b, 0xdf, 0x82, 0x00, 0x9e, ],
+ [ 0xf3, 0xb9, 0xdd, 0x94, 0xc5, 0xbb, 0x5d, 0x7a, ],
+ [ 0xa7, 0xad, 0x6b, 0x22, 0x46, 0x2f, 0xb3, 0xf4, ],
+ [ 0xfb, 0xe5, 0x0e, 0x86, 0xbc, 0x8f, 0x1e, 0x75, ],
+ [ 0x90, 0x3d, 0x84, 0xc0, 0x27, 0x56, 0xea, 0x14, ],
+ [ 0xee, 0xf2, 0x7a, 0x8e, 0x90, 0xca, 0x23, 0xf7, ],
+ [ 0xe5, 0x45, 0xbe, 0x49, 0x61, 0xca, 0x29, 0xa1, ],
+ [ 0xdb, 0x9b, 0xc2, 0x57, 0x7f, 0xcc, 0x2a, 0x3f, ],
+ [ 0x94, 0x47, 0xbe, 0x2c, 0xf5, 0xe9, 0x9a, 0x69, ],
+ [ 0x9c, 0xd3, 0x8d, 0x96, 0xf0, 0xb3, 0xc1, 0x4b, ],
+ [ 0xbd, 0x61, 0x79, 0xa7, 0x1d, 0xc9, 0x6d, 0xbb, ],
+ [ 0x98, 0xee, 0xa2, 0x1a, 0xf2, 0x5c, 0xd6, 0xbe, ],
+ [ 0xc7, 0x67, 0x3b, 0x2e, 0xb0, 0xcb, 0xf2, 0xd0, ],
+ [ 0x88, 0x3e, 0xa3, 0xe3, 0x95, 0x67, 0x53, 0x93, ],
+ [ 0xc8, 0xce, 0x5c, 0xcd, 0x8c, 0x03, 0x0c, 0xa8, ],
+ [ 0x94, 0xaf, 0x49, 0xf6, 0xc6, 0x50, 0xad, 0xb8, ],
+ [ 0xea, 0xb8, 0x85, 0x8a, 0xde, 0x92, 0xe1, 0xbc, ],
+ [ 0xf3, 0x15, 0xbb, 0x5b, 0xb8, 0x35, 0xd8, 0x17, ],
+ [ 0xad, 0xcf, 0x6b, 0x07, 0x63, 0x61, 0x2e, 0x2f, ],
+ [ 0xa5, 0xc9, 0x1d, 0xa7, 0xac, 0xaa, 0x4d, 0xde, ],
+ [ 0x71, 0x65, 0x95, 0x87, 0x66, 0x50, 0xa2, 0xa6, ],
+ [ 0x28, 0xef, 0x49, 0x5c, 0x53, 0xa3, 0x87, 0xad, ],
+ [ 0x42, 0xc3, 0x41, 0xd8, 0xfa, 0x92, 0xd8, 0x32, ],
+ [ 0xce, 0x7c, 0xf2, 0x72, 0x2f, 0x51, 0x27, 0x71, ],
+ [ 0xe3, 0x78, 0x59, 0xf9, 0x46, 0x23, 0xf3, 0xa7, ],
+ [ 0x38, 0x12, 0x05, 0xbb, 0x1a, 0xb0, 0xe0, 0x12, ],
+ [ 0xae, 0x97, 0xa1, 0x0f, 0xd4, 0x34, 0xe0, 0x15, ],
+ [ 0xb4, 0xa3, 0x15, 0x08, 0xbe, 0xff, 0x4d, 0x31, ],
+ [ 0x81, 0x39, 0x62, 0x29, 0xf0, 0x90, 0x79, 0x02, ],
+ [ 0x4d, 0x0c, 0xf4, 0x9e, 0xe5, 0xd4, 0xdc, 0xca, ],
+ [ 0x5c, 0x73, 0x33, 0x6a, 0x76, 0xd8, 0xbf, 0x9a, ],
+ [ 0xd0, 0xa7, 0x04, 0x53, 0x6b, 0xa9, 0x3e, 0x0e, ],
+ [ 0x92, 0x59, 0x58, 0xfc, 0xd6, 0x42, 0x0c, 0xad, ],
+ [ 0xa9, 0x15, 0xc2, 0x9b, 0xc8, 0x06, 0x73, 0x18, ],
+ [ 0x95, 0x2b, 0x79, 0xf3, 0xbc, 0x0a, 0xa6, 0xd4, ],
+ [ 0xf2, 0x1d, 0xf2, 0xe4, 0x1d, 0x45, 0x35, 0xf9, ],
+ [ 0x87, 0x57, 0x75, 0x19, 0x04, 0x8f, 0x53, 0xa9, ],
+ [ 0x10, 0xa5, 0x6c, 0xf5, 0xdf, 0xcd, 0x9a, 0xdb, ],
+ [ 0xeb, 0x75, 0x09, 0x5c, 0xcd, 0x98, 0x6c, 0xd0, ],
+ [ 0x51, 0xa9, 0xcb, 0x9e, 0xcb, 0xa3, 0x12, 0xe6, ],
+ [ 0x96, 0xaf, 0xad, 0xfc, 0x2c, 0xe6, 0x66, 0xc7, ],
+ [ 0x72, 0xfe, 0x52, 0x97, 0x5a, 0x43, 0x64, 0xee, ],
+ [ 0x5a, 0x16, 0x45, 0xb2, 0x76, 0xd5, 0x92, 0xa1, ],
+ [ 0xb2, 0x74, 0xcb, 0x8e, 0xbf, 0x87, 0x87, 0x0a, ],
+ [ 0x6f, 0x9b, 0xb4, 0x20, 0x3d, 0xe7, 0xb3, 0x81, ],
+ [ 0xea, 0xec, 0xb2, 0xa3, 0x0b, 0x22, 0xa8, 0x7f, ],
+ [ 0x99, 0x24, 0xa4, 0x3c, 0xc1, 0x31, 0x57, 0x24, ],
+ [ 0xbd, 0x83, 0x8d, 0x3a, 0xaf, 0xbf, 0x8d, 0xb7, ],
+ [ 0x0b, 0x1a, 0x2a, 0x32, 0x65, 0xd5, 0x1a, 0xea, ],
+ [ 0x13, 0x50, 0x79, 0xa3, 0x23, 0x1c, 0xe6, 0x60, ],
+ [ 0x93, 0x2b, 0x28, 0x46, 0xe4, 0xd7, 0x06, 0x66, ],
+ [ 0xe1, 0x91, 0x5f, 0x5c, 0xb1, 0xec, 0xa4, 0x6c, ],
+ [ 0xf3, 0x25, 0x96, 0x5c, 0xa1, 0x6d, 0x62, 0x9f, ],
+ [ 0x57, 0x5f, 0xf2, 0x8e, 0x60, 0x38, 0x1b, 0xe5, ],
+ [ 0x72, 0x45, 0x06, 0xeb, 0x4c, 0x32, 0x8a, 0x95, ],
+]
+const siphashreferencetestvector = {ctx+ var key = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]
+ var e, h, msg : byte[64]
+
+ for var i = 0; i < 64; i++
+ msg[i] = i
+ h = std.siphash24(msg[:i], key)
+ e = std.getle64(siphashtestvector[i][:])
+ if e != h
+ testr.fail(ctx, "wrong siphash value\n")
+ else
+ testr.ok(ctx)
+ ;;
+ ;;
}