Node.js

Send aes-gcm authEnvelopedData Encrypted Email

See more SMTP Examples

Note: This example requires Chilkat v10.0.0 or later

Demonstrates how to send encrypted email using 128-bit AES in GCM mode.

"AES-GCM" (Advanced Encryption Standard - Galois/Counter Mode) is a cryptographic algorithm that provides both encryption and integrity protection (authentication). When used in the context of email security with "authEnvelopedData", it often refers to a method of securely sending encrypted and authenticated email content.

Here’s a brief breakdown:

• AES-GCM: Combines symmetric encryption (AES) with authentication, ensuring both the confidentiality and integrity of the message. It generates an authentication tag to detect any unauthorized changes.
• authEnvelopedData: Refers to a type of structure used in secure email protocols (like S/MIME) to package encrypted content. It contains the encrypted data and associated encrypted session keys.
• Email Security: When applied to emails, AES-GCM ensures the email content is encrypted (confidential) and also tamper-resistant (authenticated), with the encryption keys typically shared securely using asymmetric encryption (e.g., public key infrastructure, or PKI).

In short, AES-GCM with "authEnvelopedData" provides a way to encrypt and authenticate emails, making them confidential and resistant to tampering.

Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // The mailman object is used for sending and receiving email.
    var mailman = new chilkat.MailMan();

    mailman.SmtpHost = "smtp.example.com";

    mailman.SmtpUsername = "my_smtp_login";
    mailman.SmtpPassword = "my_smtp_password";

    // The typical SMTP ports are 465 for implicit SSL/TLS or 587 for explicit SSL/TLS
    mailman.SmtpPort = 465;
    mailman.SmtpSsl = true;

    // Use the recipient's certificate for encryption.
    var cert = new chilkat.Cert();
    success = cert.LoadFromFile("c:/someDir/recipient_cert.cer");
    if (success !== true) {
        console.log(cert.LastErrorText);
        return;
    }

    var email = new chilkat.Email();

    email.Subject = "This email is encrypted";
    email.Body = "This is AES-GCM encrypted mail";
    email.From = "Mary <mary@example1.com>";
    success = email.AddTo("Joe","joe@example.com");

    // Specify that AES-GCM w/ authEnvelopedData is to be used. 
    // Also specify other params..
    email.Pkcs7CryptAlg = "aes-gcm";
    email.Pkcs7KeyLength = 128;
    email.OaepPadding = true;
    email.OaepHash = "sha256";
    email.OaepMgfHash = "sha256";

    // Indicate the email is to be sent encrypted.
    email.SendEncrypted = true;

    // Specify the certificate to be used for encryption.
    success = email.SetEncryptCert(cert);

    success = mailman.SendEmail(email);
    if (success !== true) {
        console.log(mailman.LastErrorText);
    }
    else {
        console.log("Mail Sent!");
    }


}

chilkatExample();