| java.lang.Object
 java.security.MessageDigestSpi
java.security.MessageDigest
| Method Summary | |
| public Object | clone()
| | public byte[] | digest()
Computes and answers the final hash value that the receiver represents. | | public int | digest(byte[] buf, int offset, int len)
| | public byte[] | digest(byte[] input)
| | final public String | getAlgorithm()
Answers the standard Java Security name for the algorithm being used by
the receiver. | | final public int | getDigestLength()
Return the engine digest length in bytes. | | public static MessageDigest | getInstance(String algorithm)
| | public static MessageDigest | getInstance(String algorithm, String provider)
| | public static MessageDigest | getInstance(String algorithm, Provider provider)
Answers a new MessageDigest which is capable of running the algorithm
described by the argument. | | final public Provider | getProvider()
Returns the Provider of the digest represented by the receiver. | | public static boolean | isEqual(byte[] digesta, byte[] digestb)
Does a simply byte-per-byte compare of the two digests. | | public void | reset()
Puts the receiver back in an initial state, such that it is ready to
compute a new hash. | | public String | toString()
Answers a string containing a concise, human-readable description of the
receiver. | | public void | update(byte arg0)
Includes the argument in the hash value computed by the receiver. | | public void | update(byte[] input, int offset, int len)
| | public void | update(byte[] input)
| | final public void | update(ByteBuffer input)
|
| MessageDigest | | protected MessageDigest(String algorithm)(Code) | | |
| digest | | public byte[] digest()(Code) | | Computes and answers the final hash value that the receiver represents.
After the digest is computed the receiver is reset.
the hash the receiver computed
See Also: MessageDigest.reset |
| digest | | public byte[] digest(byte[] input)(Code) | | |
| getAlgorithm | | final public String getAlgorithm()(Code) | | Answers the standard Java Security name for the algorithm being used by
the receiver.
String the name of the algorithm |
| getDigestLength | | final public int getDigestLength()(Code) | | Return the engine digest length in bytes. Default is 0.
int the engine digest length in bytes |
| getInstance | | public static MessageDigest getInstance(String algorithm, Provider provider) throws NoSuchAlgorithmException(Code) | | Answers a new MessageDigest which is capable of running the algorithm
described by the argument. The result will be an instance of a subclass
of MessageDigest which implements that algorithm.
Parameters:
algorithm - java.lang.String Name of the algorithm desired
Parameters:
provider - Provider Provider which has to implement the algorithm MessageDigest a concrete implementation for the algorithmdesired.
exception:
NoSuchAlgorithmException - If the algorithm cannot be found |
| getProvider | | final public Provider getProvider()(Code) | | Returns the Provider of the digest represented by the receiver.
Provider an instance of a subclass of java.security.Provider |
| isEqual | | public static boolean isEqual(byte[] digesta, byte[] digestb)(Code) | | Does a simply byte-per-byte compare of the two digests.
Parameters:
digesta - One of the digests to compare
Parameters:
digestb - The digest to compare to true if the two hashes are equalfalse if the two hashes are not equal |
| reset | | public void reset()(Code) | | Puts the receiver back in an initial state, such that it is ready to
compute a new hash.
|
| toString | | public String toString()(Code) | | Answers a string containing a concise, human-readable description of the
receiver.
a printable representation for the receiver. |
| update | | public void update(byte arg0)(Code) | | Includes the argument in the hash value computed by the receiver.
Parameters:
arg0 - byte the byte to feed to the hash algorithm
See Also: MessageDigest.reset() |
| update | | public void update(byte[] input, int offset, int len)(Code) | | |
| update | | public void update(byte[] input)(Code) | | |
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