org.awakefw.commons.api.server.util
Class Sha1

java.lang.Object
  org.awakefw.commons.api.server.util.Sha1

public class Sha1
extends Object

SHA-1 hash functions on strings and files with SUN provider.

Constructor Summary

Sha1()
Constructor.

Method Summary

byte[]	getFileHash(File file) Gets the a file hash value.
byte[]	getHash(byte[] b) Computes the SHA-1 hash code of a byte array as an hex string.
String	getHexFileHash(File file) Gets the file hash as an hex string value.
String	getHexHash(byte[] b) Computes the hash code of a byte array as an hex string.

Methods inherited from class java.lang.Object

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

Constructor Detail

Sha1

public Sha1()

Constructor.

Method Detail

getFileHash

public byte[] getFileHash(File file)
                   throws IOException,
                          NoSuchAlgorithmException,
                          NoSuchProviderException

Gets the a file hash value.

Parameters:

file - the file to hash

Returns:

the file hash as bytes

Throws:

IOException - an I/O error occurred

NoSuchAlgorithmException - hash algorithm not found

NoSuchProviderException - hash provider not found

getHash

public byte[] getHash(byte[] b)
               throws NoSuchAlgorithmException,
                      NoSuchProviderException

Computes the SHA-1 hash code of a byte array as an hex string.

Parameters:

b - the bytes to hash

Returns:

the hash value

Throws:

NoSuchAlgorithmException - if the algorithm is not available from the provide

NoSuchProviderException - if the provider is not available in the environment

getHexFileHash

public String getHexFileHash(File file)
                      throws IOException,
                             NoSuchAlgorithmException,
                             NoSuchProviderException

Gets the file hash as an hex string value.

Parameters:

file - the file to hash

Returns:

the file hash as an hex string

Throws:

IOException - an I/O error occurred

NoSuchAlgorithmException - hash algorithm not found

NoSuchProviderException - hash provider not found

getHexHash

public String getHexHash(byte[] b)
                  throws NoSuchAlgorithmException,
                         NoSuchProviderException

Computes the hash code of a byte array as an hex string.

Parameters:

b - the bytes to hash

Returns:

the hash value in hex String

Throws:

NoSuchAlgorithmException - if the algorithm is not available from the provider

NoSuchProviderException - if the provider is not available in the environment