KDF1BytesGenerator (Bouncy Castle Library 1.85 API Specification)
Date: 2026-07-12

org.bouncycastle.crypto.generators

## Class KDF1BytesGenerator

- java.lang.Object
- - org.bouncycastle.crypto.generators.BaseKDFBytesGenerator
  - - org.bouncycastle.crypto.generators.KDF1BytesGenerator

- All Implemented Interfaces:
    DerivationFunction, DigestDerivationFunction

      public class KDF1BytesGenerator
      extends BaseKDFBytesGenerator

  KDF1 generator for derived keys and ivs as defined by IEEE P1363a/ISO 18033
  This implementation is based on ISO 18033/IEEE P1363a.

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `KDF1BytesGenerator(Digest digest)` Construct a KDF1 byte generator.

  - ### Method Summary

    - ### Methods inherited from class org.bouncycastle.crypto.generators.BaseKDFBytesGenerator

      `generateBytes, getDigest, init`

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

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

- - ### Constructor Detail

    - #### KDF1BytesGenerator

          public KDF1BytesGenerator(Digest digest)

      Construct a KDF1 byte generator.

      Parameters:
        `digest` - the digest to be used as the source of derived keys.