Deno/std
1
0
Fork 0
mirror of https://github.com/denoland/std.git synced 2024-11-22 04:59:05 +00:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

refactor(crypto): remove old unused _fnv folder (#5716)

Browse Source 
* initial commit

* remove files
This commit is contained in:
Tim Reichen 2024-08-20 01:42:34 +02:00 committed by GitHub
parent b929d05156
commit 06da501da6
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
6 changed files with 0 additions and 251 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
crypto/_fnv/fnv32.ts
View File

@ -1,32 +0,0 @@
// Ported from Go:
// https://github.com/golang/go/tree/go1.13.10/src/hash/fnv/fnv.go
// Copyright 2011 The Go Authors. All rights reserved. BSD license.
// https://github.com/golang/go/blob/master/LICENSE
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// This module is browser compatible.
import { mul32, swap32 } from "./util.ts";
const prime32 = 16777619;
export const fnv32 = (data: Uint8Array): ArrayBuffer => {
let hash = 2166136261;
data.forEach((c) => {
hash = mul32(hash, prime32);
hash ^= c;
});
return Uint32Array.from([swap32(hash)]).buffer;
};
export const fnv32a = (data: Uint8Array): ArrayBuffer => {
let hash = 2166136261;
data.forEach((c) => {
hash ^= c;
hash = mul32(hash, prime32);
});
return Uint32Array.from([swap32(hash)]).buffer;
};

35
crypto/_fnv/fnv64.ts
View File

@ -1,35 +0,0 @@
// Ported from Go:
// https://github.com/golang/go/tree/go1.13.10/src/hash/fnv/fnv.go
// Copyright 2011 The Go Authors. All rights reserved. BSD license.
// https://github.com/golang/go/blob/master/LICENSE
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// This module is browser compatible.
import { mul64, swap32 } from "./util.ts";
const prime64Lo = 435;
const prime64Hi = 256;
export const fnv64 = (data: Uint8Array): ArrayBuffer => {
let hashLo = 2216829733;
let hashHi = 3421674724;
data.forEach((c) => {
[hashHi, hashLo] = mul64([hashHi, hashLo], [prime64Hi, prime64Lo]);
hashLo ^= c;
});
return new Uint32Array([swap32(hashHi >>> 0), swap32(hashLo >>> 0)]).buffer;
};
export const fnv64a = (data: Uint8Array): ArrayBuffer => {
let hashLo = 2216829733;
let hashHi = 3421674724;
data.forEach((c) => {
hashLo ^= c;
[hashHi, hashLo] = mul64([hashHi, hashLo], [prime64Hi, prime64Lo]);
});
return new Uint32Array([swap32(hashHi >>> 0), swap32(hashLo >>> 0)]).buffer;
};

24
crypto/_fnv/mod.ts
View File

@ -1,24 +0,0 @@
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// This module is browser compatible.
import { fnv32, fnv32a } from "./fnv32.ts";
import { fnv64, fnv64a } from "./fnv64.ts";
export function fnv(name: string, buf?: Uint8Array): ArrayBuffer {
if (!buf) {
throw new TypeError("no data provided for hashing");
}
switch (name) {
case "FNV32":
return fnv32(buf);
case "FNV64":
return fnv64(buf);
case "FNV32A":
return fnv32a(buf);
case "FNV64A":
return fnv64a(buf);
default:
throw new TypeError(`unsupported fnv digest: ${name}`);
}
}

29
crypto/_fnv/mod_test.ts
View File

@ -1,29 +0,0 @@
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { assertEquals, assertThrows } from "@std/assert";
import { fnv } from "./mod.ts";
Deno.test("fnv()", function () {
const encoder = new TextEncoder();
const input = encoder.encode("a");
const fixtures = [
["FNV32", new ArrayBuffer(4)],
["FNV32A", new ArrayBuffer(4)],
["FNV64", new ArrayBuffer(8)],
["FNV64A", new ArrayBuffer(8)],
] as const;
for (const [name, expected] of fixtures) {
assertEquals(fnv(name, input), expected);
}
});
Deno.test("fnv() throws when no data is provided", function () {
assertThrows(() => fnv("FNV32"), TypeError, "no data provided for hashing");
});
Deno.test("fnv() throws when an unsupported digest is provided", function () {
assertThrows(
() => fnv("FNV128", new Uint8Array()),
TypeError,
"unsupported fnv digest: FNV128",
);
});

62
crypto/_fnv/util.ts
View File

@ -1,62 +0,0 @@
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// This module is browser compatible.
export function swap32(val: number): number {
return (
((val & 0xff) << 24) |
((val & 0xff00) << 8) |
((val >> 8) & 0xff00) |
((val >> 24) & 0xff)
);
}
function n16(n: number): number {
return n & 0xffff;
}
function n32(n: number): number {
return n >>> 0;
}
function add32WithCarry(a: number, b: number): [number, number] {
const added = n32(a) + n32(b);
return [n32(added), added > 0xffffffff ? 1 : 0];
}
function mul32WithCarry(a: number, b: number): [number, number] {
const al = n16(a);
const ah = n16(a >>> 16);
const bl = n16(b);
const bh = n16(b >>> 16);
const [t, tc] = add32WithCarry(al * bh, ah * bl);
const [n, nc] = add32WithCarry(al * bl, n32(t << 16));
const carry = nc + (tc << 16) + n16(t >>> 16) + ah * bh;
return [n, carry];
}
/**
* mul32 performs 32-bit multiplication, a * b
* @param a
* @param b
*/
export function mul32(a: number, b: number): number {
// https://stackoverflow.com/a/28151933
const al = n16(a);
const ah = a - al;
return n32(n32(ah * b) + al * b);
}
/**
* mul64 performs 64-bit multiplication with two 32-bit words
* @param [ah, al]
* @param [bh, bl]
*/
export function mul64(
[ah, al]: [number, number],
[bh, bl]: [number, number],
): [number, number] {
const [n, c] = mul32WithCarry(al, bl);
return [n32(mul32(al, bh) + mul32(ah, bl) + c), n];
}

69
crypto/_fnv/util_test.ts
View File

@ -1,69 +0,0 @@
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
import { assertEquals } from "@std/assert";
import { mul32, mul64 } from "./util.ts";
Deno.test("mul32()", () => {
assertEquals(mul32(0xffffffff, 0xffffffff), 1);
assertEquals(mul32(0x12345678, 0xdeadbeef), 0x5621ca08);
assertEquals(mul32(0xf626f430, 0xff7469f1), 0x2a939130);
assertEquals(mul32(0x543f9412, 0x8a4aa84f), 0x39fe818e);
assertEquals(mul32(0x8ee170d1, 0x2fbbb9ec), 0x6a0609ac);
assertEquals(mul32(0xea3b3a14, 0xa397bd0a), 0xddfd08c8);
assertEquals(mul32(0x93f8536b, 0xa79e3c04), 0xcc7861ac);
assertEquals(mul32(0xf97dab98, 0xed526241), 0x2348c198);
assertEquals(mul32(0x35500191, 0xd5012447), 0xaff9d337);
assertEquals(mul32(0x471dde47, 0xaaa4950c), 0x4341be54);
assertEquals(mul32(0xd633970d, 0xa9bc2bcd), 0xb43b2469);
assertEquals(mul32(0xc60898cc, 0xbfe7dcc4), 0x15f84c30);
});
Deno.test("mul64()", () => {
assertEquals(mul64([0xffffffff, 0xffffffff], [0xffffffff, 0xffffffff]), [
0,
1,
]);
assertEquals(mul64([0x12345678, 0xdeadbeef], [0xcafebabe, 0xbaadf00d]), [
0xc801c86b,
0xdf55c223,
]);
assertEquals(mul64([0xdc479aed, 0x24bc71a3], [0x543717c1, 0x4b6056b9]), [
0x56c7ec8f,
0x387ae0cb,
]);
assertEquals(mul64([0xb84936ae, 0xb84becd2], [0x2864edd1, 0x14ee13cc]), [
0xd87e9171,
0x12504d58,
]);
assertEquals(mul64([0xb0b73e95, 0x3f5cc701], [0x6c7b30b8, 0xcd7f0f9e]), [
0x570551ee,
0x116ae19e,
]);
assertEquals(mul64([0xc237b433, 0x160b50bf], [0x3f937c23, 0xf26175f7]), [
0x48a1d118,
0x97313349,
]);
assertEquals(mul64([0x386242fd, 0x6baa0fc0], [0xf81f7e23, 0xbe172381]), [
0x4799f2a3,
0x6b192fc0,
]);
assertEquals(mul64([0x5afc8714, 0x902180d1], [0xa7068c96, 0xb859bb4d]), [
0xb4589d29,
0xd3d569dd,
]);
assertEquals(mul64([0xb4e86a68, 0x619bee92], [0xd67560fa, 0x736982a7]), [
0x72c73b5d,
0x4bc0c53e,
]);
assertEquals(mul64([0xfc8b5561, 0xbf91d6d5], [0x2bcb029a, 0xa144ead3]), [
0x2da439a7,
0x3926c38f,
]);
assertEquals(mul64([0x47b62fae, 0xffe8cb4c], [0xbda77111, 0x6cad4968]), [
0x9d9b7832,
0xcae742e0,
]);
assertEquals(mul64([0xc9160fc1, 0xd96e085b], [0x3adfd031, 0x3f75e557]), [
0xe4d0bf23,
0x88753ded,
]);
});