package com.derson.pumelo.network.volley;
import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
/**
* User: mcxiaoke
* Date: 15/3/17
* Time: 14:47
*/
class InternalUtils {
// http://stackoverflow.com/questions/9655181/convert-from-byte-array-to-hex-string-in-java
private final static char[] HEX_CHARS = "0123456789ABCDEF".toCharArray();
private static String convertToHex(byte[] bytes) {
char[] hexChars = new char[bytes.length * 2];
for (int j = 0; j < bytes.length; j++) {
int v = bytes[j] & 0xFF;
hexChars[j * 2] = HEX_CHARS[v >>> 4];
hexChars[j * 2 + 1] = HEX_CHARS[v & 0x0F];
}
return new String(hexChars);
}
public static String sha1Hash(String text) {
String hash = null;
try {
final MessageDigest digest = MessageDigest.getInstance("SHA-1");
final byte[] bytes = text.getBytes("UTF-8");
digest.update(bytes, 0, bytes.length);
hash = convertToHex(digest.digest());
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return hash;
}
}