Javascript RSA decryption using private key

问题

Hello I have this script that I set in Javascript :

<!DOCTYPE html>
    <html lang="en">
            <head>
            <script src="jquery-1.7.2.min.js" type="text/javascript"></script>
            <script language="JavaScript" type="text/javascript" src="jsbn.js"></script>
            <script language="JavaScript" type="text/javascript" src="rsa.js"></script>
            <script language="JavaScript">

                function encryptData(){
                    var pem ="-----BEGIN PUBLIC KEY-----\
                    MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC+tii3IwzHa4i142kAB0dRVXoXA2Q8oF48UgMA\
                    AV54+JDED5iVyJK1s7J/xGi4U3+9sRoraE7bS19Nihs5DuYa0gsbKs/5jXOtKiw94fAtMyJTcX0d\
                    SzZhJKcX9vEzI27Hdu1rNFY64Ixz3KjrG1N/pXHtwjE1Ira5XZdTezx0wwIDAQAB\
                    -----END PUBLIC KEY-----";
                    var key = RSA.getPublicKey(pem);
                    var message = "some text to RSA encrypt";
                    var encryptedMessage = RSA.encrypt(message, key);
                    $('#RSAMessageEncrypted').html(encryptedMessage);
                }
            </script>
            </head>
        <body onload=encryptData();>
        <form>
            <strong>RSA encrypted Message :</strong> <textarea rows="10" cols="100"   id="RSAMessageEncrypted"></textarea><br>
        </form> 
        </body>
    </html>

My text area is filled with my message encrypted in RSA using the public key above.

The encrypted message is :

oH1JVWIT7MOH4ObCjFlBuFcAUvooSZANMokFy5jApSi8n0ABVc9vwXP2EFl2x5+UColU6s2VAU+RsZPV4ZgZu3+GhN9pDUb1ZMVyYRECDy/7h+mE+UdDZTPwP1TAcBrspL/XM6+q6mJfUWbEKfR/2vyNUhBxpt6QOhVaI29aHfU=

My question is as following: How can I decrypt my message using the private key pair that this public key was derived from? Is there any library for decryption?

My private key is :

回答1:

First of all, I hope that's not the RSA private key that you are going to use in production.

As regards to doing the encryption/decryption on JavaScript side, there are various libraries such as Standford's JSBN RSA Encryption library and ohdave.com's RSA in JavaScript utility for doing simple encryption/decryption, but your main concern with these tools and even your architecture is performance. I would not do RSA encryption with JavaScript unless it was absolutely necessary and there were no other workarounds.

来源：https://stackoverflow.com/questions/14309894/javascript-rsa-decryption-using-private-key

标签

javascript

rsa

public-key-encryption

encryption

private-key