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(C# UWP/WinRT) SMTP Login SecureDemonstrates how to set the SMTP password using a secure string. This example requires Chilkat v9.5.0.71 or greater.
// This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. Chilkat.MailMan mailman = new Chilkat.MailMan(); bool success; // Imagine we've previously saved our encrypted login and password within a JSON config file // that contains this: // { // "smtp_login": "D7lnlWY291LKMeChlvQq7N/Tg7ieuSB15a+9Ekyd0R4=", // "smtp_password": "5neIq9Jmn0E3p71N6Yc8TA==" // } Chilkat.JsonObject json = new Chilkat.JsonObject(); json.LoadFile("qa_data/passwords/smtp.json"); Chilkat.Crypt2 crypt = new Chilkat.Crypt2(); // These are the encryption settings we previously used to encrypt the credentials within the JSON config file. crypt.CryptAlgorithm = "aes"; crypt.CipherMode = "cbc"; crypt.KeyLength = 128; crypt.SetEncodedKey("000102030405060708090A0B0C0D0E0F","hex"); crypt.SetEncodedIV("000102030405060708090A0B0C0D0E0F","hex"); crypt.EncodingMode = "base64"; Chilkat.SecureString ssLogin = new Chilkat.SecureString(); Chilkat.SecureString ssPassword = new Chilkat.SecureString(); // Decrypt to the secure string. (the strings will still held in memory encrypted, but are now encrypted using // a randomly generated session key.) crypt.DecryptSecureENC(json.StringOf("smtp_login"),ssLogin); crypt.DecryptSecureENC(json.StringOf("smtp_password"),ssPassword); // Set the SMTP domain, login, and password mailman.SmtpHost = "smtp.gmail.com"; mailman.SmtpSsl = true; mailman.SmtpPort = 465; mailman.SmtpUsername = ssLogin.Access(); // Set the SmtpPassword property via the SetPassword method using the secure string. mailman.SetPassword("smtp",ssPassword); // Connect and authenticate.. success = await mailman.SmtpConnectAsync(); if (success != true) { Debug.WriteLine(mailman.LastErrorText); return; } success = await mailman.SmtpAuthenticateAsync(); if (success != true) { Debug.WriteLine(mailman.LastErrorText); return; } Debug.WriteLine("SMTP login successful."); // ... await mailman.CloseSmtpConnectionAsync(); |
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