Package 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	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 Details

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.