/**
* Returns the engine digest length in bytes. If the implementation does not
* implement this function or is not an instance of {@code Cloneable},
* {@code 0} is returned.
*
* @return the digest length in bytes, or {@code 0}
*/
public int getDigestLength()
{
int l = engineGetDigestLength();
if (l != 0)
{
return(l);
}
if (!(this is java.lang.Cloneable))
{
return(0);
}
try
{
MessageDigest md = (MessageDigest)clone();
return(md.digest().Length);
}
catch (java.lang.CloneNotSupportedException)
{
return(0);
}
}
/**
* Constructs a new instance of this {@code DigestInputStream}, using the
* given {@code stream} and the {@code digest}.
*
* @param stream
* the input stream.
* @param digest
* the message digest.
*/
public DigestInputStream(java.io.InputStream stream, MessageDigest digest)
: base(stream)
{
this.digest = digest;
}
/*
* Sets the message digest which this stream will use.
*
* @param digest
* the message digest which this stream will use.
*/
public void setMessageDigest(MessageDigest digest)
{
this.digest = digest;
}
/**
* Sets the message digest which this stream will use.
*
* @param digest
* the message digest which this stream will use.
*/
public void setMessageDigest(MessageDigest digest)
{
this.digest = digest;
}
/*
* Constructs a new instance of this {@code DigestInputStream}, using the
* given {@code stream} and the {@code digest}.
*
* @param stream
* the input stream.
* @param digest
* the message digest.
*/
public DigestInputStream(java.io.InputStream stream, MessageDigest digest) :
base(stream)
{
this.digest = digest;
}