Node.js

RSA Encrypt RSA/ECB/OAEPWithSHA1AndMGF1Padding

See more RSA Examples

Demonstrates how to RSA encrypt using RSA/ECB/OAEPWithSHA1AndMGF1Padding. Also demonstrates RSA/ECB/OAEPWithSHA-256AndMGF1Padding. Both of these terms are from Java's JCE. Note: In this context, "ECB" doesn't actually mean anything. It's a symmetric cipher mode that doesn't apply (or make sense) in this context. Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

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

    var rsa = new chilkat.Rsa();

    // First load a public key object with a public key.
    // In this case, we'll load it from a file.
    var pubkey = new chilkat.PublicKey();
    success = pubkey.LoadFromFile("qa_data/pem/rsa_public.pem");
    if (success == false) {
        console.log(pubkey.LastErrorText);
        return;
    }

    // RSA encryption is limited to small amounts of data. The limit
    // is typically a few hundred bytes and is based on the key size and
    // padding (OAEP vs. PKCS1_5).  RSA encryption is typically used for
    // encrypting hashes or symmetric (bulk encryption algorithm) secret keys.
    var plainText = "Time is an illusion. Lunchtime doubly so.";

    // Import the public key to be used for encrypting.
    success = rsa.UsePublicKey(pubkey);

    // To get OAEP padding, set the PkcsPadding property equal to false
    rsa.PkcsPadding = false;
    rsa.OaepHash = "sha256";

    // Indicate we'll want hex output
    rsa.EncodingMode = "hex";

    // Encrypt..
    var usePrivateKey = false;
    var encryptedStr = rsa.EncryptStringENC(plainText,usePrivateKey);
    console.log(encryptedStr);

    // -------------------------------------------------
    // Now decrypt with the matching private key.
    var rsa2 = new chilkat.Rsa();

    var privKey = new chilkat.PrivateKey();
    success = privKey.LoadEncryptedPem("qa_data/pem/rsa_passwd.pem","passwd");
    if (success == false) {
        console.log(privKey.LastErrorText);
        return;
    }

    success = rsa2.UsePrivateKey(privKey);

    // Make sure we have the same settings used for encryption.
    rsa2.PkcsPadding = false;
    rsa2.EncodingMode = "hex";
    rsa2.OaepHash = "sha256";

    var originalStr = rsa2.DecryptStringENC(encryptedStr,true);

    console.log(originalStr);

}

chilkatExample();