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

org.bouncycastle.crypto.ec

## Class ECElGamalDecryptor

- java.lang.Object
- - org.bouncycastle.crypto.ec.ECElGamalDecryptor

- All Implemented Interfaces:
    ECDecryptor

      public class ECElGamalDecryptor
      extends java.lang.Object
      implements ECDecryptor

  this does your basic decryption ElGamal style using EC

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `ECElGamalDecryptor()`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `ECPoint` | `decrypt(ECPair pair)` Decrypt an EC pair producing the original EC point.
    `void` | `init(CipherParameters param)` initialise the decryptor.

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

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

- - ### Constructor Detail

    - #### ECElGamalDecryptor

          public ECElGamalDecryptor()

  - ### Method Detail

    - #### init

          public void init(CipherParameters param)

      initialise the decryptor.
      Specified by:
        `init` in interface `ECDecryptor`
      Parameters:
        `param` - the necessary EC key parameters.

    - #### decrypt

          public ECPoint decrypt(ECPair pair)

      Decrypt an EC pair producing the original EC point.
      Specified by:
        `decrypt` in interface `ECDecryptor`
      Parameters:
        `pair` - the EC point pair to process.
      Returns:
        the result of the Elgamal process.