| java.lang.Object
 com.sun.portal.ksecurity.RandomData
All known Subclasses: com.sun.portal.ksecurity.PRand,
| RandomData | | abstract public class RandomData (Code) | | Implements an abstract class that generalizes random number
generators.
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| Field Summary | |
| final public static byte | ALG_PSEUDO_RANDOM
Identifies a utility pseudo random number generation algorithm. | | final public static byte | ALG_SECURE_RANDOM
Identifies a cryptographically secure random number generation
algorithm. |
| Constructor Summary | |
| protected | RandomData()
Protected constructor for subclassing. |
| Method Summary | |
| abstract public void | generateData(byte[] buf, short off, short len)
Generates random data. | | public static RandomData | getInstance(byte alg)
Creates a RandomData instance of the selected algorithm. | | abstract public void | setSeed(byte[] buf, short off, short len)
Seeds the random number generator. |
| ALG_PSEUDO_RANDOM | | final public static byte ALG_PSEUDO_RANDOM(Code) | | Identifies a utility pseudo random number generation algorithm.
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| ALG_SECURE_RANDOM | | final public static byte ALG_SECURE_RANDOM(Code) | | Identifies a cryptographically secure random number generation
algorithm.
|
| RandomData | | protected RandomData()(Code) | | Protected constructor for subclassing.
|
| generateData | | abstract public void generateData(byte[] buf, short off, short len)(Code) | | Generates random data.
Parameters:
buf - output buffer in which the random data is to be placed
Parameters:
off - starting offset within buf for the random data
Parameters:
len - number of bytes of random data to be placed in buf |
| getInstance | | public static RandomData getInstance(byte alg) throws CryptoException(Code) | | Creates a RandomData instance of the selected algorithm.
Parameters:
alg - the desired random number generation algorithm, e.g. ALG_PSEUDO_RANDOM a RandomData instance implementing the selected algorithm.
exception:
CryptoException - with reason code set to NO_SUCH_ALGORITHMif an unsupported algorithm is requested. WARNING: Requests for a secure random number generatorare currently redirected to a class that implements a weakly unpredictable source of random data. Licensees of this referenceimplementation are strongly urged to link requests for ALG_SECURE_RANDOM to better generators that may be availableon their specific platforms. |
| setSeed | | abstract public void setSeed(byte[] buf, short off, short len)(Code) | | Seeds the random number generator.
Parameters:
buf - input buffer containing the seed
Parameters:
off - offset within buf where the seed starts
Parameters:
len - number of bytes of seed data in buf |
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