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src/java.base/share/classes/java/security/MessageDigest.java

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  67  *     ...etc.
  68  * } catch (CloneNotSupportedException cnse) {
  69  *     throw new DigestException("couldn't make digest of partial content");
  70  * }
  71  * }</pre>
  72  *
  73  * <p>Note that if a given implementation is not cloneable, it is
  74  * still possible to compute intermediate digests by instantiating
  75  * several instances, if the number of digests is known in advance.
  76  *
  77  * <p>Note that this class is abstract and extends from
  78  * {@code MessageDigestSpi} for historical reasons.
  79  * Application developers should only take notice of the methods defined in
  80  * this {@code MessageDigest} class; all the methods in
  81  * the superclass are intended for cryptographic service providers who wish to
  82  * supply their own implementations of message digest algorithms.
  83  *
  84  * <p> Every implementation of the Java platform is required to support
  85  * the following standard {@code MessageDigest} algorithms:
  86  * <ul>
  87  * <li>{@code MD5}</li>
  88  * <li>{@code SHA-1}</li>
  89  * <li>{@code SHA-256}</li>
  90  * </ul>
  91  * These algorithms are described in the <a href=
  92  * "{@docRoot}/../specs/security/standard-names.html#messagedigest-algorithms">
  93  * MessageDigest section</a> of the
  94  * Java Security Standard Algorithm Names Specification.
  95  * Consult the release documentation for your implementation to see if any
  96  * other algorithms are supported.
  97  *
  98  * @author Benjamin Renaud
  99  * @since 1.1
 100  *
 101  * @see DigestInputStream
 102  * @see DigestOutputStream
 103  */
 104 
 105 public abstract class MessageDigest extends MessageDigestSpi {
 106 
 107     private static final Debug pdebug =




  67  *     ...etc.
  68  * } catch (CloneNotSupportedException cnse) {
  69  *     throw new DigestException("couldn't make digest of partial content");
  70  * }
  71  * }</pre>
  72  *
  73  * <p>Note that if a given implementation is not cloneable, it is
  74  * still possible to compute intermediate digests by instantiating
  75  * several instances, if the number of digests is known in advance.
  76  *
  77  * <p>Note that this class is abstract and extends from
  78  * {@code MessageDigestSpi} for historical reasons.
  79  * Application developers should only take notice of the methods defined in
  80  * this {@code MessageDigest} class; all the methods in
  81  * the superclass are intended for cryptographic service providers who wish to
  82  * supply their own implementations of message digest algorithms.
  83  *
  84  * <p> Every implementation of the Java platform is required to support
  85  * the following standard {@code MessageDigest} algorithms:
  86  * <ul>

  87  * <li>{@code SHA-1}</li>
  88  * <li>{@code SHA-256}</li>
  89  * </ul>
  90  * These algorithms are described in the <a href=
  91  * "{@docRoot}/../specs/security/standard-names.html#messagedigest-algorithms">
  92  * MessageDigest section</a> of the
  93  * Java Security Standard Algorithm Names Specification.
  94  * Consult the release documentation for your implementation to see if any
  95  * other algorithms are supported.
  96  *
  97  * @author Benjamin Renaud
  98  * @since 1.1
  99  *
 100  * @see DigestInputStream
 101  * @see DigestOutputStream
 102  */
 103 
 104 public abstract class MessageDigest extends MessageDigestSpi {
 105 
 106     private static final Debug pdebug =


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