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java.lang.Objectorg.directwebremoting.util.IdGenerator
public class IdGenerator
Code to generate page ids. IdGenerators are expensive to setup so it is suggested that you share instances wherever possible. This action will also enhance security. Much of this code is adapted from org.apache.catalina.session.ManagerBase. Specifically Revision 1.37 which has been unchanged in the past 18 months. I have taken out the /dev/urandom stuff and simplified things to the point where we can audit it to work out what might be broken.
Field Summary | |
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protected java.lang.String |
algorithm
The message digest algorithm to be used when generating session identifiers. |
protected static java.lang.String |
DEFAULT_ALGORITHM
The default message digest algorithm to use if we cannot use the requested one. |
protected java.security.MessageDigest |
digest
Return the MessageDigest implementation to be used when creating session identifiers. |
protected java.util.Random |
random
A random number generator to use when generating session identifiers. |
Constructor Summary | |
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IdGenerator()
Seed the random number |
Method Summary | |
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java.lang.String |
generateId(int length)
Generate and return a new session identifier. |
java.lang.String |
getAlgorithm()
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void |
setAlgorithm(java.lang.String algorithm)
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java.lang.String |
toString()
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Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Field Detail |
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protected static final java.lang.String DEFAULT_ALGORITHM
protected java.lang.String algorithm
java.security.MessageDigest
class on your platform.
protected java.util.Random random
protected java.security.MessageDigest digest
Constructor Detail |
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public IdGenerator()
Method Detail |
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public java.lang.String generateId(int length)
length
- The number of bytes to generate
public java.lang.String getAlgorithm()
public void setAlgorithm(java.lang.String algorithm)
algorithm
- the algorithm to setpublic java.lang.String toString()
toString
in class java.lang.Object
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