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java.lang.Object
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+--java.security.MessageDigestSpi
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+--gnu.crypto.jce.hash.MessageDigestAdapter
The implementation of a generic MessageDigest adapter
class to wrap gnu.crypto hash instances.
This class defines the Service Provider Interface (SPI) for the
MessageDigest class, which provides the functionality
of a message digest algorithm, such as MD5 or SHA. Message digests are secure
one-way hash functions that take arbitrary-sized data and output a fixed-
length hash value.
All the abstract methods in the MessageDigestSpi class
are implemented by this class and all its sub-classes.
All the implementations which subclass this object, and which are serviced by
the GNU Crypto provider implement the Cloneable interface.
| Constructor Summary | |
protected |
MessageDigestAdapter(java.lang.String mdName)
Trivial protected constructor. |
| Method Summary | |
java.lang.Object |
clone()
|
byte[] |
engineDigest()
|
int |
engineDigest(byte[] buf,
int offset,
int len)
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int |
engineGetDigestLength()
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void |
engineReset()
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void |
engineUpdate(byte input)
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void |
engineUpdate(byte[] input,
int offset,
int len)
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| Methods inherited from class java.lang.Object |
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
protected MessageDigestAdapter(java.lang.String mdName)
mdName - the canonical name of the hash algorithm.| Method Detail |
public java.lang.Object clone()
clone in class java.security.MessageDigestSpipublic int engineGetDigestLength()
engineGetDigestLength in class java.security.MessageDigestSpipublic void engineUpdate(byte input)
engineUpdate in class java.security.MessageDigestSpi
public void engineUpdate(byte[] input,
int offset,
int len)
engineUpdate in class java.security.MessageDigestSpipublic byte[] engineDigest()
engineDigest in class java.security.MessageDigestSpi
public int engineDigest(byte[] buf,
int offset,
int len)
throws java.security.DigestException
engineDigest in class java.security.MessageDigestSpijava.security.DigestExceptionpublic void engineReset()
engineReset in class java.security.MessageDigestSpi
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For the latest news and information visit The GNU Crypto project |
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