public static String base64ToHex(String paramString)
    {
        String str = a(Base64.decodeBase64(paramString));
        paramString = str;
        if (str.length() > 40) {
            paramString = str.substring(0, 40);
        }
        return paramString.toLowerCase();
    }

    protected static final char[] a = "0123456789ABCDEF".toCharArray();

    public static String a(byte[] paramArrayOfByte)
    {
        char[] arrayOfChar = new char[paramArrayOfByte.length * 2];
        int i = 0;
        while (i < paramArrayOfByte.length)
        {
            int j = paramArrayOfByte[i] & 0xFF;
            arrayOfChar[(i * 2)] = a[(j >>> 4)];
            arrayOfChar[(i * 2 + 1)] = a[(j & 0xF)];
            i += 1;
        }
        return new String(arrayOfChar);
    }