PowerBuilder

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.

PowerBuilder

integer li_rc
integer li_Success
oleobject loo_Mailman
oleobject loo_Cert
oleobject loo_Email

li_Success = 0

// 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.
loo_Mailman = create oleobject
li_rc = loo_Mailman.ConnectToNewObject("Chilkat.MailMan")
if li_rc < 0 then
    destroy loo_Mailman
    MessageBox("Error","Connecting to COM object failed")
    return
end if

loo_Mailman.SmtpHost = "smtp.example.com"

loo_Mailman.SmtpUsername = "my_smtp_login"
loo_Mailman.SmtpPassword = "my_smtp_password"

// The typical SMTP ports are 465 for implicit SSL/TLS or 587 for explicit SSL/TLS
loo_Mailman.SmtpPort = 465
loo_Mailman.SmtpSsl = 1

// Use the recipient's certificate for encryption.
loo_Cert = create oleobject
li_rc = loo_Cert.ConnectToNewObject("Chilkat.Cert")

li_Success = loo_Cert.LoadFromFile("c:/someDir/recipient_cert.cer")
if li_Success <> 1 then
    Write-Debug loo_Cert.LastErrorText
    destroy loo_Mailman
    destroy loo_Cert
    return
end if

loo_Email = create oleobject
li_rc = loo_Email.ConnectToNewObject("Chilkat.Email")

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

// Specify that AES-GCM w/ authEnvelopedData is to be used. 
// Also specify other params..
loo_Email.Pkcs7CryptAlg = "aes-gcm"
loo_Email.Pkcs7KeyLength = 128
loo_Email.OaepPadding = 1
loo_Email.OaepHash = "sha256"
loo_Email.OaepMgfHash = "sha256"

// Indicate the email is to be sent encrypted.
loo_Email.SendEncrypted = 1

// Specify the certificate to be used for encryption.
li_Success = loo_Email.SetEncryptCert(loo_Cert)

li_Success = loo_Mailman.SendEmail(loo_Email)
if li_Success <> 1 then
    Write-Debug loo_Mailman.LastErrorText
else
    Write-Debug "Mail Sent!"
end if



destroy loo_Mailman
destroy loo_Cert
destroy loo_Email