MessageDigestSpi
Class MessageDigestSpi
- java.lang.Object
-
- java.security.MessageDigestSpi
- Direct Known Subclasses:
- MessageDigest
public abstract class MessageDigestSpi extends Object
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 this class must be implemented by a cryptographic service provider who wishes to supply the implementation of a particular message digest algorithm.
Implementations
