Java

URL Signing for Google Maps API

See more Encryption Examples

Demonstrates how to sign a URL for the Google Maps API. Chilkat2 Java

import com.chilkatsoft.chilkat2.Crypt2;

public class ChilkatExample {

    public static void main(String[] args) {
        // This example assumes the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code.

        Crypt2 crypt = new Crypt2();

        // The output will be modified Base64.
        // Modified Base64 for URLs replaces the '+' and '/' characters
        // of standard Base64 with '-' and '_' respectively, so that these
        // Base64 signatures no longer need to be URL-encoded.
        crypt.setEncodingMode("modBase64");

        // Set the hash algorithm to sha-1
        crypt.setHashAlgorithm("sha-1");
        crypt.setMacAlgorithm("hmac");

        // Set the HMAC key (this is the private key provided by Google)
        crypt.setMacKeyEncoded("vNIXE0xscrmjlyV-12Nj_BvUPaw=", "modBase64");

        // Compute the URL signature
        String sig = crypt.macStringENC("/maps/api/geocode/json?address=New+York&sensor=false&client=clientID");

        // The result should be KrU1TzVQM7Ur0i8i7K3huiw3MsA=
        System.out.println(sig);
    }
}