@worker-tools/deno-kv-storage/esm/deps/deno.land/x/postgres@v0.15.0/connection/auth.js

An implementation of the StorageArea (1,2,3) interface for Deno with an extensible system for supporting various database backends.

import { crypto, hex } from "../deps.js";
const encoder = new TextEncoder();
const decoder = new TextDecoder();
async function md5(bytes) {
    return decoder.decode(hex.encode(new Uint8Array(await crypto.subtle.digest("MD5", bytes))));
}
// AuthenticationMD5Password
// The actual PasswordMessage can be computed in SQL as:
//  concat('md5', md5(concat(md5(concat(password, username)), random-salt))).
// (Keep in mind the md5() function returns its result as a hex string.)
export async function hashMd5Password(password, username, salt) {
    const innerHash = await md5(encoder.encode(password + username));
    const innerBytes = encoder.encode(innerHash);
    const outerBuffer = new Uint8Array(innerBytes.length + salt.length);
    outerBuffer.set(innerBytes);
    outerBuffer.set(salt, innerBytes.length);
    const outerHash = await md5(outerBuffer);
    return "md5" + outerHash;
}
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