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import java.security.MessageDigest; | |
import java.security.NoSuchAlgorithmException; | |
import java.io.UnsupportedEncodingException; | |
import java.security.*; | |
public class HelloWorld { | |
public static void main(String []args) | |
throws UnsupportedEncodingException, NoSuchAlgorithmException { | |
String[] codes = {"ONE", "TWO"}; | |
String digest = verification_digest("ef591fbbc527d77402d9a10dba92c195", "purchase", | |
"812881", "developer@example.com", "200.00", "2014-01-01T00:00:00+00:00", | |
codes); | |
System.out.println(digest); | |
} | |
public static String verification_digest(String key, String event_category, | |
String event_number, String email, String subtotal, | |
String order_date, String[] coupons) | |
throws UnsupportedEncodingException, NoSuchAlgorithmException { | |
String string = key + "|" + event_category + "|" + | |
event_number + "|" + email + "|" + (subtotal != null ? subtotal : "") + "|" + | |
(order_date != null ? order_date : "") + "|" + strJoin(coupons, ","); | |
string = string.replaceAll("\\|\\|", "|").replaceAll("\\|$", ""); | |
System.out.println(string); | |
return hash256(string); | |
} | |
public static String strJoin(String[] aArr, String sSep) { | |
StringBuilder sbStr = new StringBuilder(); | |
for (int i = 0, il = aArr.length; i < il; i++) { | |
if (i > 0) | |
sbStr.append(sSep); | |
sbStr.append(aArr[i]); | |
} | |
return sbStr.toString(); | |
} | |
public static String hash256(String data) throws NoSuchAlgorithmException { | |
MessageDigest md = MessageDigest.getInstance("SHA-256"); | |
md.update(data.getBytes()); | |
return bytesToHex(md.digest()); | |
} | |
public static String bytesToHex(byte[] bytes) { | |
StringBuffer result = new StringBuffer(); | |
for (byte byt : bytes) result.append(Integer.toString((byt & 0xff) + 0x100, 16).substring(1)); | |
return result.toString(); | |
} | |
} |
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