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| java.lang.Object
 org.gomba.utils.token.IdGenerator
| IdGenerator | | public class IdGenerator (Code) | | Random id generator. This code has been *stolen* and adapted from Tomcat 5
org.apache.catalina.session.ManagerBase. Thank you guys! :)
author:
Craig R. McClanahan
author:
Flavio Tordini
version:
$Id: IdGenerator.java,v 1.1 2004/11/26 17:52:58 flaviotordini Exp $ |
| Field Summary | |
| final protected static String | DEFAULT_ALGORITHM
The default message digest algorithm to use if we cannot use the
requested one. | | protected String | algorithm
The message digest algorithm to be used when generating session
identifiers. | | protected MessageDigest | digest
Return the MessageDigest implementation to be used when creating session
identifiers. | | protected String | entropy
A String initialization parameter used to increase the entropy of the
initialization of our random number generator. | | protected int | idLength
The session id length created by this class. | | protected Random | random
A random number generator to use when generating session identifiers. | | protected String | randomClass
The Java class name of the random number generator class to be used when
generating session identifiers. |
| Method Summary | |
| public String | generateId()
Generate and return a new identifier. | | public MessageDigest | getDigest()
Return the MessageDigest object to be used for calculating session
identifiers. | | public String | getEntropy()
Return the entropy increaser value, or compute a semi-useful value if
this String has not yet been set. | | public Random | getRandom()
Return the random number generator instance we should use for generating
session identifiers. | | protected void | getRandomBytes(byte bytes)
| | public void | setEntropy(String entropy)
Set the entropy increaser value. |
| DEFAULT_ALGORITHM | | final protected static String DEFAULT_ALGORITHM(Code) | | The default message digest algorithm to use if we cannot use the
requested one.
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| algorithm | | protected String algorithm(Code) | | The message digest algorithm to be used when generating session
identifiers. This must be an algorithm supported by the
java.security.MessageDigest class on your platform.
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| digest | | protected MessageDigest digest(Code) | | Return the MessageDigest implementation to be used when creating session
identifiers.
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| entropy | | protected String entropy(Code) | | A String initialization parameter used to increase the entropy of the
initialization of our random number generator.
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| idLength | | protected int idLength(Code) | | The session id length created by this class.
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| random | | protected Random random(Code) | | A random number generator to use when generating session identifiers.
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| randomClass | | protected String randomClass(Code) | | The Java class name of the random number generator class to be used when
generating session identifiers.
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| generateId | | public String generateId()(Code) | | Generate and return a new identifier.
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| getDigest | | public MessageDigest getDigest()(Code) | | Return the MessageDigest object to be used for calculating session
identifiers. If none has been created yet, initialize one the first time
this method is called.
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| getEntropy | | public String getEntropy()(Code) | | Return the entropy increaser value, or compute a semi-useful value if
this String has not yet been set.
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| getRandom | | public Random getRandom()(Code) | | Return the random number generator instance we should use for generating
session identifiers. If there is no such generator currently defined,
construct and seed a new one.
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| getRandomBytes | | protected void getRandomBytes(byte bytes)(Code) | | |
| setEntropy | | public void setEntropy(String entropy)(Code) | | Set the entropy increaser value.
Parameters:
entropy - The new entropy increaser value |
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