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Node.js Examples

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(Node.js) Encrypt using Cert to produce -----BEGIN PKCS7----- ... -----END PKCS7-----

Demonstrates how to encrypt using a certificate to produce output such as:

-----BEGIN PKCS7-----
MIIHPwYJKoZIhvcNAQcEoIIHMDCCBywC ...
...
...
-----END PKCS7-----
The certificate to be used is not your own, but the certificate of the intended recipient of the message.

Install Chilkat for Node.js and Electron using npm at

Chilkat npm packages for Node.js

Chilkat npm packages for Electron

on Windows, Linux, MacOSX, and ARM

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() {

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

    var crypt = new chilkat.Crypt2();

    // Specify the encryption to be used.
    // "pki" indicates "Public Key Infrastructure" and will create a PKCS7 encrypted (enveloped) message.
    crypt.CryptAlgorithm = "pki";
    crypt.Pkcs7CryptAlg = "aes";
    crypt.KeyLength = 128;
    crypt.OaepHash = "sha256";
    crypt.OaepPadding = true;

    // A certificate is needed as the encryption key..
    var cert = new chilkat.Cert();
    var success = cert.LoadFromFile("qa_data/certs/testCert.pem");
    if (success !== true) {
        console.log(cert.LastErrorText);
        return;
    }

    // Tell the crypt object to use the certificate.
    crypt.SetEncryptCert(cert);

    var toBeEncrypted = "This string is to be encrypted.";

    // Get the result in multi-line BASE64 MIME format.
    crypt.EncodingMode = "base64_mime";

    var encryptedStr = crypt.EncryptStringENC(toBeEncrypted);
    if (success !== true) {
        console.log(crypt.LastErrorText);
        return;
    }

    // Make a "-----BEGIN PKCS7-----" ... "-----END PKCS7-----" sandwich...
    var sb = new chilkat.StringBuilder();
    sb.AppendLine("-----BEGIN PKCS7-----",true);
    sb.Append(encryptedStr);
    sb.AppendLine("-----END PKCS7-----",true);

    var outStr = sb.GetAsString();

    console.log(outStr);

    // Sample output:

    // -----BEGIN PKCS7-----
    // MIICYQYJKoZIhvcNAQcDoIICUjCCAk4CAQAxggH5MIIB9QIBADCBsTCBmzELMAkGA1UEBhMCR0Ix
    // GzAZBgNVBAgTEkdyZWF0ZXIgTWFuY2hlc3RlcjEQMA4GA1UEBxMHU2FsZm9yZDEaMBgGA1UEChMR
    // Q09NT0RPIENBIExpbWl0ZWQxQTA/BgNVBAMTOENPTU9ETyBTSEEtMjU2IENsaWVudCBBdXRoZW50
    // aWNhdGlvbiBhbmQgU2VjdXJlIEVtYWlsIENBAhEAuBl4qE2MODB05C5h53M5UDA4BgkqhkiG9w0B
    // AQcwK6APMA0GCWCGSAFlAwQCAQUAoRgwFgYJKoZIhvcNAQEIMAkGBSsOAwIaBQAEggEAyZejlE37
    // awl0bCWVbOCqf9yLSN17mZRamG8FHDh3nNu11G0+oyJtsPDEnSKsQig0V67MZ+hcWV+uf4ytcjyx
    // H0gs5uex+LwkB+c3ZTOt18IYWFtRilg1HFy1ZN3t0D2QbxYy+i1TXOOwp3gAHL45vRCJ0FbKyQ36
    // pKl0XLe+lRvp2EiJCKVjxtX8VcZOKT4xkG7yOARaCQceth6pA58Dg0yzAz7w4nD2UgAlNzrXG69X
    // e+7e7yfBv47RRqFiQqDpCn+fM/PmFbUyqBppMwc64yP+fJek8VyJw2/UaXWWM4iSKSflk90tiHwf
    // loEU3It4arnSv94fZQo0v129aBqpWzBMBgkqhkiG9w0BBwEwHQYJYIZIAWUDBAECBBCohUgm5qX+
    // TE6PxtPCmWi8gCBgbNg39emAB+AqLozm+vSLjZOGfg3M52gccKUJ8tg8XQ==
    // -----END PKCS7-----

}

chilkatExample();

 

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