MessageImprint (Bouncy Castle Library 1.85 API Specification)
Date: 2026-07-12

org.bouncycastle.asn1.tsp

## Class MessageImprint

- java.lang.Object
- - org.bouncycastle.asn1.ASN1Object
  - - org.bouncycastle.asn1.tsp.MessageImprint

- All Implemented Interfaces:
    ASN1Encodable, Encodable

      public class MessageImprint
      extends ASN1Object

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `MessageImprint(AlgorithmIdentifier hashAlgorithm, byte[] hashedMessage)`

  - ### Method Summary

    All Methods Static Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `AlgorithmIdentifier` | `getHashAlgorithm()`
    `byte[]` | `getHashedMessage()`
    `int` | `getHashedMessageLength()`
    `static MessageImprint` | `getInstance(java.lang.Object o)` Return an instance of MessageImprint, or null, based on o.
    `ASN1Primitive` | `toASN1Primitive()` MessageImprint ::= SEQUENCE { hashAlgorithm AlgorithmIdentifier, hashedMessage OCTET STRING }

    - ### Methods inherited from class org.bouncycastle.asn1.ASN1Object

      `encodeTo, encodeTo, equals, getEncoded, getEncoded, hasEncodedTagValue, hashCode`

    - ### Methods inherited from class java.lang.Object

      `clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### MessageImprint

          public MessageImprint(AlgorithmIdentifier hashAlgorithm,
                                byte[] hashedMessage)

  - ### Method Detail

    - #### getInstance

          public static MessageImprint getInstance(java.lang.Object o)

      Return an instance of MessageImprint, or null, based on o.
      Parameters:
        `o` - the object to be converted.
      Returns:
        a MessageImprint object.

    - #### getHashAlgorithm

          public AlgorithmIdentifier getHashAlgorithm()

    - #### getHashedMessage

          public byte[] getHashedMessage()

    - #### getHashedMessageLength

          public int getHashedMessageLength()

    - #### toASN1Primitive

          public ASN1Primitive toASN1Primitive()

              MessageImprint ::= SEQUENCE  {
                 hashAlgorithm                AlgorithmIdentifier,
                 hashedMessage                OCTET STRING  }

      Specified by:
        `toASN1Primitive` in interface `ASN1Encodable`
      Specified by:
        `toASN1Primitive` in class `ASN1Object`
      Returns:
        a primitive representation of this object.