calculate SAPISIDDASH

GoogleTokenUtils.java

import com.google.common.hash.Hashing;

import java.nio.charset.Charset;

public class GoogleTokenUtils {
    public static String calcSapiSidDash(long ts, String sapiSid, String origin) {
        return String.format("%d_%s", ts, calcHash(ts, sapiSid, origin));
    }

    public static String calcSapiSidDash(String sapiSid, String origin) {
        long ts = System.currentTimeMillis();
        return calcSapiSidDash(ts, sapiSid, origin);
    }

    private static String calcHash(long ts, String sapiSid, String origin) {
        String plain = String.format("%d %s %s", ts, sapiSid, origin);
        return Hashing.sha1().hashString(plain, Charset.defaultCharset()).toString();
    }
}