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45 lines
1.3 KiB
TypeScript
45 lines
1.3 KiB
TypeScript
// Loaded from https://deno.land/x/mysql/src/auth.ts
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import { createHash, encode, SupportedAlgorithm } from "../deps.ts";
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import { xor } from "./util.ts";
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function hash(algorithm: SupportedAlgorithm, data: Uint8Array): Uint8Array {
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return new Uint8Array(createHash(algorithm).update(data).digest());
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}
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function mysqlNativePassword(password: string, seed: Uint8Array): Uint8Array {
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const pwd1 = hash("sha1", encode(password));
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const pwd2 = hash("sha1", pwd1);
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let seedAndPwd2 = new Uint8Array(seed.length + pwd2.length);
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seedAndPwd2.set(seed);
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seedAndPwd2.set(pwd2, seed.length);
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seedAndPwd2 = hash("sha1", seedAndPwd2);
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return xor(seedAndPwd2, pwd1);
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}
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function cachingSha2Password(password: string, seed: Uint8Array): Uint8Array {
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const stage1 = hash("sha256", encode(password));
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const stage2 = hash("sha256", stage1);
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const stage3 = hash("sha256", Uint8Array.from([...stage2, ...seed]));
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return xor(stage1, stage3);
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}
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export default function auth(
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authPluginName: string,
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password: string,
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seed: Uint8Array,
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) {
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switch (authPluginName) {
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case "mysql_native_password":
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return mysqlNativePassword(password, seed);
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case "caching_sha2_password":
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return cachingSha2Password(password, seed);
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default:
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throw new Error("Not supported");
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}
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}
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