var crypto = require("crypto");
var algorithm = "aes-256-cbc";

var self = module.exports = {

    encryption: function (inputdata, key) {
        // Generating 16 bytes random value & convert to hex
        var iv = crypto.randomBytes(16);
        var id = "a5b459000402bd8999fac0d68ec2b90e467f358f45880ada3375d81e4819c1c1";
        iv = iv.toString("hex");
        var hash = crypto.createHash('sha256').update(String(key));
        var hashstring = hash.toString("hex").substring(0, 32);
        var cipher = crypto.createCipheriv(algorithm, Buffer.from(hashstring, "hex"), Buffer.from(iv, "hex"));
        var encrypted = cipher.update(inputdata, "utf8", "base64") + cipher.final("base64");
        encrypted = encrypted.replace(/+/g, "-").replace(///g, "_"); // Replace + with - and / with _

        return id + "." + iv + "." + encrypted;
    },

    decryption: function (encryptdata, iv, key) {
        var hash = crypto.createHash("sha256").update(key).digest();
        var hashstring = hash.toString("hex").substring(0, 32);
        iv = Buffer.from(iv, "hex");
        encryptdata = encryptdata.replace(/-/g, "+").replace(/_/g, "/"); // Replace - with + and _ with /
        var decipher = crypto.createDecipheriv(algorithm, Buffer.from(hashstring, "hex"), iv);
        var decrypted = decipher.update(encryptdata, "base64", "utf8");
        decrypted += decipher.final("utf8");
        return decrypted;
    }
};

var inputdata = { "data": 123 };
var encdata = self.encryption(JSON.stringify(inputdata), "uKxLYDvUrz");
console.log("Encrypted data:", encdata);

This is my complete code,

But while encryption, Its throwing error

node:internal/crypto/cipher:121
    this[kHandle].initiv(cipher, credential, iv, authTagLength);
                  ^

RangeError: Invalid key length
    at Cipheriv.createCipherBase (node:internal/crypto/cipher:121:19)
    at Cipheriv.createCipherWithIV (node:internal/crypto/cipher:140:3)
    at new Cipheriv (node:internal/crypto/cipher:243:3)
    at Object.createCipheriv (node:crypto:147:10)
    at Object.encryption (D:DesktopeNachNodeindex.js:13:29)
    at Object.<anonymous> (D:DesktopeNachNodeindex.js:36:20)
    at Module._compile (node:internal/modules/cjs/loader:1358:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1416:10)
    at Module.load (node:internal/modules/cjs/loader:1208:32)
    at Module._load (node:internal/modules/cjs/loader:1024:12) {
  code: 'ERR_CRYPTO_INVALID_KEYLEN'
}

Node.js v20.15.0

Credentials I got from CamsPay

Encryption / Decryption Key

uKxLYDvUrz / 37D3T

Encryption ID

a5b459000402bd8999fac0d68ec2b90e467f358f45880ada3375d81e4819c1c1

Want to solve this issue @ earliest pls