/**
* Returns a new instance of {@code MessageDigest} that utilizes the
* specified algorithm from the specified provider.
*
* @param algorithm
* the name of the algorithm to use
* @param provider
* the provider
* @return a new instance of {@code MessageDigest} that utilizes the
* specified algorithm from the specified provider
* @throws NoSuchAlgorithmException
* if the specified algorithm is not available
* @throws NullPointerException
* if {@code algorithm} is {@code null}
*/
public static MessageDigest getInstance(String algorithm, Provider provider)
{//throws NoSuchAlgorithmException {
if (provider == null)
{
throw new java.lang.IllegalArgumentException("Provider is null"); //$NON-NLS-1$
}
if (algorithm == null)
{
throw new java.lang.NullPointerException("Algorithm is null"); //$NON-NLS-1$
}
MessageDigest result;
lock (engine)
{
engine.getInstance(algorithm, provider, null);
if (engine.spi is MessageDigest)
{
result = (MessageDigest)engine.spi;
result.algorithm = algorithm;
result.provider = provider;
return(result);
}
result = new MessageDigestImpl((MessageDigestSpi)engine.spi,
provider, algorithm);
return(result);
}
}
/**
* Returns a new instance of {@code MessageDigest} that utilizes the
* specified algorithm from the specified provider.
*
* @param algorithm
* the name of the algorithm to use
* @param provider
* the provider
* @return a new instance of {@code MessageDigest} that utilizes the
* specified algorithm from the specified provider
* @throws NoSuchAlgorithmException
* if the specified algorithm is not available
* @throws NullPointerException
* if {@code algorithm} is {@code null}
*/
public static MessageDigest getInstance(String algorithm, Provider provider)
{
//throws NoSuchAlgorithmException {
if (provider == null)
{
throw new java.lang.IllegalArgumentException("Provider is null"); //$NON-NLS-1$
}
if (algorithm == null)
{
throw new java.lang.NullPointerException("Algorithm is null"); //$NON-NLS-1$
}
MessageDigest result;
lock (engine)
{
engine.getInstance(algorithm, provider, null);
if (engine.spi is MessageDigest)
{
result = (MessageDigest)engine.spi;
result.algorithm = algorithm;
result.provider = provider;
return result;
}
result = new MessageDigestImpl((MessageDigestSpi)engine.spi,
provider, algorithm);
return result;
}
}
