co.codewizards.cloudstore.core.util

Class HashUtil

java.lang.Object

co.codewizards.cloudstore.core.util.HashUtil

public final class HashUtil
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static String	HASH_ALGORITHM_MD5 Specifies usage of the MD5 algorithm in hash(String, InputStream).
static String	HASH_ALGORITHM_SHA Specifies usage of the SHA algorithm in hash(String, InputStream).

Method Summary

Methods

Modifier and Type	Method and Description
static byte[]	decodeHexStr(String hex) Decode a string containing two hex digits for each byte.
static String	encodeHexStr(byte[] buf)
static String	encodeHexStr(byte[] buf, int pos, int len) Encode a byte array into a human readable hex string.
static String	formatEncodedHexStrForHuman(String hex)
static byte[]	hash(String algorithm, InputStream in)
static byte[]	hash(String algorithm, InputStream in, ProgressMonitor monitor)
static String	sha1(byte[] in)
static String	sha1(InputStream in)
static String	sha1(String in)
static String	sha1ForHuman(byte[] in)
static String	sha1ForHuman(InputStream in)

Methods inherited from class java.lang.Object

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

Field Detail

HASH_ALGORITHM_MD5

public static final String HASH_ALGORITHM_MD5

Specifies usage of the MD5 algorithm in hash(String, InputStream).

See Also:

Constant Field Values

HASH_ALGORITHM_SHA

public static final String HASH_ALGORITHM_SHA

Specifies usage of the SHA algorithm in hash(String, InputStream).

See Also:

Constant Field Values

Method Detail

encodeHexStr

public static String encodeHexStr(byte[] buf)

encodeHexStr

public static String encodeHexStr(byte[] buf,
                  int pos,
                  int len)

Encode a byte array into a human readable hex string. For each byte, two hex digits are produced. They are concatenated without any separators.

Parameters:

buf - The byte array to translate into human readable text.

pos - The start position (0-based).

len - The number of bytes that shall be processed beginning at the position specified by pos.

Returns:

a human readable string like "fa3d70" for a byte array with 3 bytes and these values.

See Also:

encodeHexStr(byte[]), decodeHexStr(String)

decodeHexStr

public static byte[] decodeHexStr(String hex)

Decode a string containing two hex digits for each byte.

Parameters:

hex - The hex encoded string

Returns:

The byte array represented by the given hex string

See Also:

encodeHexStr(byte[]), encodeHexStr(byte[], int, int)

hash

public static byte[] hash(String algorithm,
          InputStream in)
                   throws NoSuchAlgorithmException,
                          IOException

Throws:

NoSuchAlgorithmException

IOException

hash

public static byte[] hash(String algorithm,
          InputStream in,
          ProgressMonitor monitor)
                   throws NoSuchAlgorithmException,
                          IOException

Throws:

NoSuchAlgorithmException

IOException

formatEncodedHexStrForHuman

public static String formatEncodedHexStrForHuman(String hex)

sha1ForHuman

public static String sha1ForHuman(byte[] in)

sha1ForHuman

public static String sha1ForHuman(InputStream in)
                           throws IOException

Throws:

IOException

sha1

public static String sha1(String in)

sha1

public static String sha1(byte[] in)

sha1

public static String sha1(InputStream in)
                   throws IOException

Throws:

IOException