com.etherios.connector.core.utils

Class ChecksumUtils

java.lang.Object

com.etherios.connector.core.utils.ChecksumUtils

public class ChecksumUtils
extends java.lang.Object

Utility class containing several methods to work with different CRC algorithms.

Method Summary

Modifier and Type	Method and Description
static byte[]	getCRC32Checksum(java.io.InputStream inputStream) Retrieves the CRC32 of the given input stream.
static byte[]	getMD5Sum(java.io.InputStream inputStream) Retrieves the MD5SUM of the given input stream.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getCRC32Checksum

public static byte[] getCRC32Checksum(java.io.InputStream inputStream)
                               throws java.lang.Exception

Retrieves the CRC32 of the given input stream.

Parameters:

inputStream - Input stream containing the data to calculate its CRC32.

Returns:

The calculated CRC32 as byte array.

Throws:

java.lang.Exception - if the first byte cannot be read for any reason other than the end of the file, if the input stream has been closed, or if some other I/O error occurs.

getMD5Sum

public static byte[] getMD5Sum(java.io.InputStream inputStream)
                        throws java.lang.Exception

Retrieves the MD5SUM of the given input stream.

Parameters:

inputStream - Input stream containing the data to calculate its MD5SUM.

Returns:

The calculated MD5SUM as byte array.

Throws:

java.lang.Exception - if the MD5 algorithm is not available in the caller's environment or if the first byte cannot be read for any reason other than the end of the file, if the input stream has been closed, or if some other I/O error occurs.