Never mind,  I have come up with a solution:

package com.yourpackage.signature;

import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
import java.util.Date;

import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;

import org.apache.geronimo.mail.util.Base64; //can be whichever flavor of encoder you'd like

public class SignatureGenerator {

public static final String ACCESS_ID = "member-XXXXXXX";
    public static final String SECRET_KEY = "XXXXXXXXXXXXXXXXXXXXXXXXXXx";

//expireTime should be in seconds since Jan 1 1970 : new Date().getTime()/1000) + X
    public static String generateSignature(String data, String key, String expireTime, String algorithm)
            throws InvalidKeyException, NoSuchAlgorithmException, IOException {

data += expireTime;

byte[] hmacData = null;

SecretKeySpec secretKey = new SecretKeySpec(key.getBytes("UTF-8"),
                    algorithm);
            Mac mac = Mac.getInstance(algorithm);
            mac.init(secretKey);
            hmacData = mac.doFinal(data.getBytes("UTF-8"));

String encoded = new String(Base64.encode(hmacData));

return encoded;
    }

public static void main(String[] args) {
        try {

Long longTime = new Long(new Date().getTime()/1000) + 60;

System.out.println(longTime);

String data = ACCESS_ID + "\n";

System.out.println(generateSignature(data, SECRET_KEY, String.valueOf(longTime), "HMACSHA1"));
        } catch (Exception e) {
            e.printStackTrace();
        }

}

}

There has been no response from SeoMoz on this forum or to my email.

Please provide some feedback.  I am afraid If I cannot solve this issue I will be forced to cancel our account as it is not practical for me to manually load the sample signature and expired value on a daily basis.

Hello,

I am developing a tool for my company to get stats from SeoMoz using your API.  During development, I have been using the example signature and expires values which are auto-generated for me.  Now that testing is complete, my code will need to generate these values.  I have been googling looking for a resource demonstrating how to do this using Java, but I have not found a good example.  I was hoping that someone at SeoMoz would have a resource or an example that they could share.

The email associated with this account belongs to a non-developer, so if a response is provided via email in addition to the forum, sending it to my email would be much appreciated.

Thank you,

Anthony

aruffino@ignitemedia.com