Digest

The DigestTransform interface defines the interface of message digest algorithms, such as MD5 and SHA. Message digests are secure hash functions that take a message of arbitrary length and produce a fix length digest as output.

A object implementing the DigestTransform should start out initialized. The data is processed though calls to the update method. Once all data has been sent to the algorithm, the digest is finalized and computed with the digest method.

The digest method may only be called once. After the digest method has been called, the algorithm is reset to its initial state.

Using the update method, data may be processed piece by piece, which is useful for cases involving streams of data.

For example:

// create an MD5 hash algorithm
Md5 hash = new Md5();

// process some data
hash.update("The quick brown fox");

// process some more data
hash.update(" jumps over the lazy dog");

// conclude algorithm and produce digest
ubyte[] digest = hash.binaryDigest();