(JavaScript) Extract PKCS7 from MIME and Decrypt

Extracts the base64-encoded PKCS7 body of a MIME message to a file, and then decrypts using Chilkat Crypt2.

Note

This example is intended for running within a Chilkat.Js embedded JavaScript engine. All Chilkat JavaScript examples require Chilkat v11.4.0 or greater.

var success = false;

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

var mime = new CkMime();

success = mime.LoadMimeFile("c:/aaworkarea/EmailInBytes.txt");
if (success !== true) {
    console.log(mime.LastErrorText);
    return;
}

success = mime.SaveBody("c:/aaworkarea/smime.p7m");
if (success !== true) {
    console.log(mime.LastErrorText);
    return;
}

var crypt = new CkCrypt2();

success = crypt.AddPfxSourceFile("c:/aaworkarea/my.pfx","pfxPassword");
if (success == false) {
    console.log(crypt.LastErrorText);
    return;
}

// Indicate the public-key (PKCS7) encryption/decryption should be used:
crypt.CryptAlgorithm = "pki";

var inPath = "c:/aaworkarea/smime.p7m";
var outPath = "c:/aaworkarea/decrypted.dat";

success = crypt.CkDecryptFile(inPath,outPath);
if (success == false) {
    console.log(crypt.LastErrorText);
    return;
}

console.log("Success.");