com.helger.commons.messagedigest

Class MessageDigestGeneratorHelper

java.lang.Object

com.helger.commons.messagedigest.MessageDigestGeneratorHelper

@Immutable
public final class MessageDigestGeneratorHelper
extends Object

Contains helper classes for handling message digests and there results.

Author:

Philip Helger

Method Summary

Modifier and Type	Method and Description
static byte[]	getAllDigestBytes(byte[] aContent, EMessageDigestAlgorithm... aAlgorithms)
static byte[]	getAllDigestBytes(byte[] aContent, int nOfs, int nLength, EMessageDigestAlgorithm... aAlgorithms)
static byte[]	getAllDigestBytes(byte[] aContent, int nOfs, int nLength, NonBlockingMessageDigestGenerator aMDGen)
static byte[]	getAllDigestBytes(byte[] aContent, NonBlockingMessageDigestGenerator aMDGen)
static byte[]	getAllDigestBytes(EMessageDigestAlgorithm eAlgorithm, byte[] aBytes)
static byte[]	getAllDigestBytes(EMessageDigestAlgorithm eAlgorithm, byte[] aBytes, int nOfs, int nLength)
static byte[]	getAllDigestBytes(EMessageDigestAlgorithm eAlgorithm, String sText, Charset aCharset)
static byte[]	getAllDigestBytes(String sContent, Charset aCharset, EMessageDigestAlgorithm... aAlgorithms)
static byte[]	getAllDigestBytesFromInputStream(InputStream aIS, EMessageDigestAlgorithm... aAlgorithms) Create a hash value from the complete input stream.
static byte[]	getAllDigestBytesFromInputStream(InputStream aIS, NonBlockingMessageDigestGenerator aMDGen) Create a hash value from the complete input stream.
static String	getHexValueFromDigest(byte[] aDigest)
static long	getLongFromDigest(byte[] aDigest)

Methods inherited from class java.lang.Object

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

Method Detail

getLongFromDigest

public static long getLongFromDigest(@Nonnull
                                     byte[] aDigest)

getHexValueFromDigest

@Nonnull
public static String getHexValueFromDigest(@Nonnull
                                                     byte[] aDigest)

getAllDigestBytes

@Nonnull
 @ReturnsMutableCopy
public static byte[] getAllDigestBytes(@Nonnull
                                                                       EMessageDigestAlgorithm eAlgorithm,
                                                                       @Nonnull
                                                                       String sText,
                                                                       @Nonnull
                                                                       Charset aCharset)

getAllDigestBytes

@Nonnull
 @ReturnsMutableCopy
public static byte[] getAllDigestBytes(@Nonnull
                                                                       EMessageDigestAlgorithm eAlgorithm,
                                                                       @Nonnull
                                                                       byte[] aBytes)

getAllDigestBytes

@Nonnull
 @ReturnsMutableCopy
public static byte[] getAllDigestBytes(@Nonnull
                                                                       EMessageDigestAlgorithm eAlgorithm,
                                                                       @Nonnull
                                                                       byte[] aBytes,
                                                                       @Nonnegative
                                                                       int nOfs,
                                                                       @Nonnegative
                                                                       int nLength)

getAllDigestBytes

@Nonnull
 @ReturnsMutableCopy
public static byte[] getAllDigestBytes(@Nonnull
                                                                       String sContent,
                                                                       @Nonnull
                                                                       Charset aCharset,
                                                                       @Nonnull @Nonempty
                                                                       EMessageDigestAlgorithm... aAlgorithms)

getAllDigestBytes

@Nonnull
 @ReturnsMutableCopy
public static byte[] getAllDigestBytes(@Nonnull
                                                                       byte[] aContent,
                                                                       @Nonnull @Nonempty
                                                                       EMessageDigestAlgorithm... aAlgorithms)

getAllDigestBytes

@Nonnull
 @ReturnsMutableCopy
public static byte[] getAllDigestBytes(@Nonnull
                                                                       byte[] aContent,
                                                                       @Nonnull
                                                                       NonBlockingMessageDigestGenerator aMDGen)

getAllDigestBytes

@Nonnull
 @ReturnsMutableCopy
public static byte[] getAllDigestBytes(@Nonnull
                                                                       byte[] aContent,
                                                                       @Nonnegative
                                                                       int nOfs,
                                                                       @Nonnegative
                                                                       int nLength,
                                                                       @Nonnull @Nonempty
                                                                       EMessageDigestAlgorithm... aAlgorithms)

getAllDigestBytes

@Nonnull
 @ReturnsMutableCopy
public static byte[] getAllDigestBytes(@Nonnull
                                                                       byte[] aContent,
                                                                       @Nonnegative
                                                                       int nOfs,
                                                                       @Nonnegative
                                                                       int nLength,
                                                                       @Nonnull
                                                                       NonBlockingMessageDigestGenerator aMDGen)

getAllDigestBytesFromInputStream

@Nonnull
 @ReturnsMutableCopy
public static byte[] getAllDigestBytesFromInputStream(@Nonnull @WillClose
                                                                                      InputStream aIS,
                                                                                      @Nonnull @Nonempty
                                                                                      EMessageDigestAlgorithm... aAlgorithms)

Create a hash value from the complete input stream.

Parameters:

aIS - The input stream to create the hash value from. May not be null.

aAlgorithms - The list of algorithms to choose the first one from. May neither be null nor empty.

Returns:

The non-null message digest byte array

getAllDigestBytesFromInputStream

@Nonnull
 @ReturnsMutableCopy
public static byte[] getAllDigestBytesFromInputStream(@Nonnull @WillClose
                                                                                      InputStream aIS,
                                                                                      @Nonnull
                                                                                      NonBlockingMessageDigestGenerator aMDGen)

Create a hash value from the complete input stream.

Parameters:

aIS - The input stream to create the hash value from. May not be null.

aMDGen - The generator to be used. May not be null.

Returns:

The non-null message digest byte array