com.atlassian.security.random

Class DefaultSecureTokenGenerator

java.lang.Object

com.atlassian.security.random.DefaultSecureTokenGenerator

All Implemented Interfaces:

SecureTokenGenerator

public final class DefaultSecureTokenGenerator
extends Object
implements SecureTokenGenerator

Implementation of SecureTokenGenerator which uses the DefaultSecureRandomService for random byte generation.

Method Summary

Modifier and Type	Method and Description
String	generateNonce() Generates a base64 String representation of 20 random bytes, produced by DefaultSecureRandomService.nextBytes(byte[]).
String	generateToken() Generates a hexadecimal String representation of 20 random bytes, produced by DefaultSecureRandomService.nextBytes(byte[]).
static SecureTokenGenerator	getInstance()

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static SecureTokenGenerator getInstance()

Returns:

shared DefaultSecureTokenGenerator instance.

generateToken

public String generateToken()

Generates a hexadecimal String representation of 20 random bytes, produced by DefaultSecureRandomService.nextBytes(byte[]). The generated String is 40 characters in length and is composed of characters in the range '0'-'9' and 'a'-'f'. The length (20 bytes / 160 bits) was selected as it is the same as the size of the internal state of the SHA1PRNG.

Specified by:

generateToken in interface SecureTokenGenerator

Returns:

returns a hexadecimal encoded representation of 20 random bytes.

See Also:

generateToken()

generateNonce

public String generateNonce()

Generates a base64 String representation of 20 random bytes, produced by DefaultSecureRandomService.nextBytes(byte[]). The length (20 bytes / 160 bits) was selected as it is the same as the size of the internal state of the SHA1PRNG.

Specified by:

generateNonce in interface SecureTokenGenerator

Returns:

returns a base64 encoded representation of 20 random bytes.