SHA256Sum

sha256sum.java

  public static String sha256(File input) throws IOException {

    Digest sha256 = new Digest();
    sha256.update(Files.readAllBytes(input.toPath()));
    StringBuilder buff = new StringBuilder();

    for (byte b : sha256.digest()) {
      buff.append(String.format("%02x", b & 0xFF));
    }

    return buff.toString();
  }