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fixing encryption

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This commit is contained in:
zmeyer44 2023-10-20 19:20:18 -04:00
parent 121cf57652
commit d9e1346a8a
1 changed files with 8 additions and 4 deletions
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12
lib/nostr/index.ts
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@ -6,6 +6,7 @@ import { sha256 as SHA256 } from "@noble/hashes/sha256";
import { bytesToHex } from "@noble/hashes/utils"; import { bytesToHex } from "@noble/hashes/utils";
import crypto from "crypto"; import crypto from "crypto";
import { Buffer } from "buffer"; import { Buffer } from "buffer";
import { log } from "../utils";
export enum Kind { export enum Kind {
Metadata = 0, Metadata = 0,
@ -121,22 +122,25 @@ export function encryptMessage(message: string, password: string) {
// Function to decrypt a hashed message using a passphrase // Function to decrypt a hashed message using a passphrase
// Function to decrypt a hashed message using a passphrase // Function to decrypt a hashed message using a passphrase
export function decryptMessage(encryptedMessage: string, password: string) { export function decryptMessage(encryptedMessage: string, password: string) {
log("func", "decryptMessage");
try { try {
const buffer = create32ByteBuffer(password); const buffer = create32ByteBuffer(password);
// Extract IV from the received message // Extract IV from the received message
const ivBase64 = encryptedMessage.split("?iv=")[1]; const [message, ivBase64] = encryptedMessage.split("?iv=");
if (!ivBase64) { if (!message || !ivBase64) {
return; return;
} }
const iv = Buffer.from(ivBase64, "base64"); const iv = Buffer.from(ivBase64, "base64");
const encryptedText = Buffer.from(encryptedMessage, "base64"); const encryptedText = Buffer.from(message, "base64");
const decipher = crypto.createDecipheriv("aes-256-cbc", buffer, iv); const decipher = crypto.createDecipheriv("aes-256-cbc", buffer, iv);
const decrypted = decipher.update(encryptedText); const decrypted = decipher.update(encryptedText);
return Buffer.concat([decrypted, decipher.final()]).toString(); return Buffer.concat([decrypted, decipher.final()]).toString();
} catch (e) { } catch (e) {
console.error(e); console.error("Error decrypting", e);
} }
} }
function create32ByteBuffer(inputString: string) { function create32ByteBuffer(inputString: string) {
const hash = crypto.createHash("sha256").update(inputString).digest("hex"); const hash = crypto.createHash("sha256").update(inputString).digest("hex");
const buffer = Buffer.from(hash, "hex"); const buffer = Buffer.from(hash, "hex");