forgotten encryption stuff

app/utils/encryption.ts

@@ -0,0 +1,29 @@
+import crypto from "crypto";
+
+import serverConfig from "~/config/config.server";
+
+const ivLength = 16;
+const algorithm = "aes-256-cbc";
+const encryptionKey = serverConfig.app.encryptionKey;
+
+export function encrypt(text: string) {
+	const encryptionKeyAsBuffer = Buffer.isBuffer(encryptionKey) ? encryptionKey : Buffer.from(encryptionKey, "hex");
+	const iv = crypto.randomBytes(ivLength);
+	const cipher = crypto.createCipheriv(algorithm, encryptionKeyAsBuffer, iv);
+	const encrypted = cipher.update(text);
+	const encryptedBuffer = Buffer.concat([encrypted, cipher.final()]);
+
+	return `${iv.toString("hex")}:${encryptedBuffer.toString("hex")}`;
+}
+
+export function decrypt(encryptedHexText: string) {
+	const encryptionKeyAsBuffer = Buffer.isBuffer(encryptionKey) ? encryptionKey : Buffer.from(encryptionKey, "hex");
+	const [hexIv, hexText] = encryptedHexText.split(":");
+	const iv = Buffer.from(hexIv!, "hex");
+	const encryptedText = Buffer.from(hexText!, "hex");
+	const decipher = crypto.createDecipheriv(algorithm, encryptionKeyAsBuffer, iv);
+	const decrypted = decipher.update(encryptedText);
+	const decryptedBuffer = Buffer.concat([decrypted, decipher.final()]);
+
+	return decryptedBuffer.toString();
+}