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all: format with prettier

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(cherry picked from commit cad5b4d7deba4fbe4a40a17306ce49d3b2f13139)
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MengYX
2021-12-18 21:55:31 +08:00
parent 19486d4d34
commit 76dd78130a
34 changed files with 1652 additions and 1705 deletions
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100
src/utils/tea.ts
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@@ -15,68 +15,66 @@
// where compatibility with legacy systems, not security, is the goal.
export class TeaCipher {
// BlockSize is the size of a TEA block, in bytes.
static readonly BlockSize = 8;
// BlockSize is the size of a TEA block, in bytes.
static readonly BlockSize = 8;
// KeySize is the size of a TEA key, in bytes.
static readonly KeySize = 16;
// KeySize is the size of a TEA key, in bytes.
static readonly KeySize = 16;
// delta is the TEA key schedule constant.
static readonly delta = 0x9e3779b9;
// delta is the TEA key schedule constant.
static readonly delta = 0x9e3779b9;
// numRounds 64 is the standard number of rounds in TEA.
static readonly numRounds = 64;
// numRounds 64 is the standard number of rounds in TEA.
static readonly numRounds = 64;
k0: number
k1: number
k2: number
k3: number
rounds: number
k0: number;
k1: number;
k2: number;
k3: number;
rounds: number;
constructor(key: Uint8Array, rounds: number = TeaCipher.numRounds) {
if (key.length != 16) {
throw Error("incorrect key size")
}
if ((rounds & 1) != 0) {
throw Error("odd number of rounds specified")
}
const k = new DataView(key.buffer)
this.k0 = k.getUint32(0, false)
this.k1 = k.getUint32(4, false)
this.k2 = k.getUint32(8, false)
this.k3 = k.getUint32(12, false)
this.rounds = rounds
constructor(key: Uint8Array, rounds: number = TeaCipher.numRounds) {
if (key.length != 16) {
throw Error('incorrect key size');
}
if ((rounds & 1) != 0) {
throw Error('odd number of rounds specified');
}
const k = new DataView(key.buffer);
this.k0 = k.getUint32(0, false);
this.k1 = k.getUint32(4, false);
this.k2 = k.getUint32(8, false);
this.k3 = k.getUint32(12, false);
this.rounds = rounds;
}
encrypt(dst: DataView, src: DataView) {
encrypt(dst: DataView, src: DataView) {
let v0 = src.getUint32(0, false);
let v1 = src.getUint32(4, false);
let v0 = src.getUint32(0, false)
let v1 = src.getUint32(4, false)
let sum = 0
for (let i = 0; i < this.rounds / 2; i++) {
sum = sum + TeaCipher.delta
v0 += ((v1 << 4) + this.k0) ^ (v1 + sum) ^ ((v1 >>> 5) + this.k1)
v1 += ((v0 << 4) + this.k2) ^ (v0 + sum) ^ ((v0 >>> 5) + this.k3)
}
dst.setUint32(0, v0, false)
dst.setUint32(4, v1, false)
let sum = 0;
for (let i = 0; i < this.rounds / 2; i++) {
sum = sum + TeaCipher.delta;
v0 += ((v1 << 4) + this.k0) ^ (v1 + sum) ^ ((v1 >>> 5) + this.k1);
v1 += ((v0 << 4) + this.k2) ^ (v0 + sum) ^ ((v0 >>> 5) + this.k3);
}
decrypt(dst: DataView, src: DataView) {
let v0 = src.getUint32(0, false)
let v1 = src.getUint32(4, false)
dst.setUint32(0, v0, false);
dst.setUint32(4, v1, false);
}
let sum = TeaCipher.delta * this.rounds / 2
for (let i = 0; i < this.rounds / 2; i++) {
v1 -= ((v0 << 4) + this.k2) ^ (v0 + sum) ^ ((v0 >>> 5) + this.k3)
v0 -= ((v1 << 4) + this.k0) ^ (v1 + sum) ^ ((v1 >>> 5) + this.k1)
sum -= TeaCipher.delta
}
dst.setUint32(0, v0, false)
dst.setUint32(4, v1, false)
decrypt(dst: DataView, src: DataView) {
let v0 = src.getUint32(0, false);
let v1 = src.getUint32(4, false);
let sum = (TeaCipher.delta * this.rounds) / 2;
for (let i = 0; i < this.rounds / 2; i++) {
v1 -= ((v0 << 4) + this.k2) ^ (v0 + sum) ^ ((v0 >>> 5) + this.k3);
v0 -= ((v1 << 4) + this.k0) ^ (v1 + sum) ^ ((v1 >>> 5) + this.k1);
sum -= TeaCipher.delta;
}
dst.setUint32(0, v0, false);
dst.setUint32(4, v1, false);
}
}