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(Node.js) ConvertToSignedPkDemonstrates how to digitally sign MIME to create an "opaque" signature. The MIME is converted to an application/x-pkcs7-mime which is a PKCS7 signature that includes both the original MIME message and the signature. This is different than AddDetachedSignaturePk, where the signature is appended to the MIME. This example demonstrates how to use the certificate and its corresponding private key when they are stored in separate files -- a .cer for the certificate, and a .pem for the private key.
var os = require('os'); if (os.platform() == 'win32') { if (os.arch() == 'ia32') { var chilkat = require('@chilkat/ck-node11-win-ia32'); } else { var chilkat = require('@chilkat/ck-node11-win64'); } } else if (os.platform() == 'linux') { if (os.arch() == 'arm') { var chilkat = require('@chilkat/ck-node11-arm'); } else if (os.arch() == 'x86') { var chilkat = require('@chilkat/ck-node11-linux32'); } else { var chilkat = require('@chilkat/ck-node11-linux64'); } } else if (os.platform() == 'darwin') { var chilkat = require('@chilkat/ck-node11-macosx'); } function chilkatExample() { var mime = new chilkat.Mime(); var success; success = mime.UnlockComponent("Anything for 30-day trial"); if (success == false) { console.log(mime.LastErrorText); return; } // Load the certificate from a .cer file. var cert = new chilkat.Cert(); success = cert.LoadFromFile("aaworkarea/myCert.cer"); if (success == false) { console.log(cert.LastErrorText); return; } // Load the private key from an encrypted PEM file. // (A private key can be loaded from other file formats also..) var privKey = new chilkat.PrivateKey(); success = privKey.LoadEncryptedPemFile("aaworkarea/myPrivateKey.pem","myPassword"); if (success == false) { console.log(privKey.LastErrorText); return; } success = mime.SetBodyFromPlainText("This is the plain-text MIME body."); // Convert the MIME to application/x-pkcs7-mime, which // is PKCS7 containing both the original content and the signature. success = mime.ConvertToSignedPk(cert,privKey); if (success == false) { console.log(mime.LastErrorText); return; } // Save the S/MIME to a file. success = mime.SaveMime("aaworkarea/opaqueSignedMime.txt"); if (success == false) { console.log(mime.LastErrorText); return; } console.log("success!"); } chilkatExample(); |
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