Package org.apache.commons.codec.digest

Class B64

java.lang.Object

org.apache.commons.codec.digest.B64

class B64
extends Object

Base64-like method to convert binary bytes into ASCII chars.

TODO: Can Base64 be reused?

This class is immutable and thread-safe.

Since:

1.7

Field Summary

Fields

Modifier and Type	Field	Description
(package private) static char[]	B64T_ARRAY	Table with characters for Base64 transformation.
(package private) static String	B64T_STRING	Table with characters for Base64 transformation.

Constructor Summary

Constructors

Constructor	Description
B64()

Method Summary

Modifier and Type	Method	Description
(package private) static void	b64from24bit(byte b2, byte b1, byte b0, int outLen, StringBuilder buffer)	Base64 like conversion of bytes to ASCII chars.
(package private) static String	getRandomSalt(int num)	Generates a string of random chars from the B64T set.
(package private) static String	getRandomSalt(int num, Random random)	Generates a string of random chars from the B64T set.

Methods inherited from class java.lang.Object

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

Field Detail

B64T_STRING

static final String B64T_STRING

Table with characters for Base64 transformation.

See Also:

Constant Field Values

B64T_ARRAY

static final char[] B64T_ARRAY

Table with characters for Base64 transformation.

Constructor Detail

B64

B64()

Method Detail

b64from24bit

static void b64from24bit(byte b2,
                         byte b1,
                         byte b0,
                         int outLen,
                         StringBuilder buffer)

Base64 like conversion of bytes to ASCII chars.

Parameters:

b2 - A byte from the result.

b1 - A byte from the result.

b0 - A byte from the result.

outLen - The number of expected output chars.

buffer - Where the output chars is appended to.

getRandomSalt

static String getRandomSalt(int num)

Generates a string of random chars from the B64T set.

The salt is generated with SecureRandom.

Parameters:

num - Number of chars to generate.

Returns:

a random salt String.

getRandomSalt

static String getRandomSalt(int num,
                            Random random)

Generates a string of random chars from the B64T set.

The salt is generated with the Random provided.

Parameters:

num - Number of chars to generate.

random - an instance of Random.

Returns:

a random salt String.