Implementing RSA-SHA1 signature algorithm in Java (creating a private key for use with OAuth RSA-SHA
- by The Elite Gentleman
Hi everyone,
As you know, OAuth can support RSA-SHA1 Signature. I have an OAuthSignature interface that has the following method
public String sign(String data, String consumerSecret, String tokenSecret) throws GeneralSecurityException;
I successfully implemented and tested HMAC-SHA1 Signature (which OAuth Supports) as well as the PLAINTEXT "signature".
I have searched google and I have to create a private key if I need to use SHA1withRSA signature: Sample code:
/**
* Signs the data with the given key and the provided algorithm.
*/
private static byte[] sign(PrivateKey key,
String data)
throws GeneralSecurityException {
Signature signature = Signature.getInstance("SHA1withRSA");
signature.initSign(key);
signature.update(data.getBytes());
return signature.sign();
}
Now, How can I take the OAuth key (which is key = consumerSecret&tokenSecret) and create a PrivateKey to use with SHA1withRSA signature?
Thanks
