nodejs aws-sdk encrypt data

 encryptData: async function() {
        const kms = new AWS.KMS();
        const params = {
            KeyId: "arn:aws:kms:eu-west-1:846317326898:key/937948cd-8e08-49cb-9a59-5e2e62e7f70c", // your key alias or full ARN key
            Plaintext: "nguyen huy phuong - 987897 - 123456", // your super secret.
        }

        kms.encrypt(params).promise().then(data => {
            const base64EncryptedString = data.CiphertextBlob.toString('base64');
            console.log('base64 encrypted string: ' + base64EncryptedString);
            return base64EncryptedString;
        })
    }