private static String digest(InputStream input, String algorithm) throws IOException {
try {
MessageDigest messageDigest = MessageDigest.getInstance(algorithm);
int bufferLength = 1024;
byte[] buffer = new byte[bufferLength];
int read = input.read(buffer, 0, bufferLength);
while (read > -1) {
messageDigest.update(buffer, 0, read);
read = input.read(buffer, 0, bufferLength);
}
return EncodeUtils.encodeHex(messageDigest.digest());
} catch (GeneralSecurityException e) {
throw ExceptionUtils.unchecked(e);
}
}
public static String sha1Hex(String input) {
byte[] digestResult = digest(input, "SHA-1");
return EncodeUtils.encodeHex(digestResult);
}