Package org.bouncycastle.jcajce.interfaces

package org.bouncycastle.jcajce.interfaces

JCA-style key interfaces specific to BC's provider — e.g. BCFKSKey, MLDSAKey, XDHKey — letting callers downcast a Key from KeyFactory.getInstance(..., "BC") into the algorithm-specific accessor shape without depending on the concrete implementation classes.

Related Packages

Package	Description
org.bouncycastle.jcajce	Root of the JCA/JCE plumbing for BC: provider-overridable SecretKey implementations, PBE-key wrappers, and the CertStore bridge types that the BC provider's algorithms register against.
org.bouncycastle.jcajce.io	I/O streams that drive JCE primitives — MessageDigest, Mac, Signature, Cipher — as input or output streams, removing the boilerplate around feeding data into them by hand.
org.bouncycastle.jcajce.spec	AlgorithmParameterSpec / KeySpec implementations specific to BC's provider — covering PBKDF2 with extended digests, HKDF, ML-KEM / ML-DSA / SLH-DSA parameter sets, GOST key agreement, ZUC, SM2, EC implicit-CA, and other JDK-not-shipped algorithms.
org.bouncycastle.jcajce.util	The JcaJceHelper abstraction (default / named-provider / pinned-provider variants) used pervasively in .jcajce packages to make the underlying JCE provider selection a constructor argument rather than a global Security state lookup.

Interfaces

Class	Description
BCKey	Marker interface for key implementations that are implemented inside Bouncy Castle.
BCX509Certificate	Interface exposing some additional methods on a BC native certificate object.
CMCEKey
CMCEPrivateKey
CMCEPublicKey
EdDSAKey
EdDSAPrivateKey
EdDSAPublicKey
FrodoKEMKey
FrodoKEMPrivateKey
FrodoKEMPublicKey
MLDSAKey
MLDSAPrivateKey
MLDSAPublicKey
MLKEMKey
MLKEMPrivateKey
MLKEMPublicKey
SLHDSAKey
SLHDSAPrivateKey
SLHDSAPublicKey
SM9EncMasterPrivateKey	Interface for an SM9 (GM/T 0044) encryption master private key, the KGC-held root of the identity-based scheme.
SM9EncMasterPublicKey	Interface for an SM9 (GM/T 0044) encryption master public key, the published root of the identity-based scheme.
SM9EncUserKeyGenerator	A master private key capable of the KGC user-key extraction for an identity-based encryption-family scheme: deriving a user's key pair from the user's identity and the private-key generation function identifier hid the KGC chose (GM/T 0044.3/0044.4-2016 for SM9, where one encryption master key serves key exchange, KEM and public-key encryption, distinguished by hid).
SM9EncUserPrivateKey	Interface for a user's SM9 (GM/T 0044.4) encryption (KEM / decryption) private key (de), derived by the KGC from the encryption master private key and the user's identity.
SM9EncUserPublicKey	Interface for an SM9 (GM/T 0044.4) recipient's encryption public key: an encryption master public key bound to a recipient identity.
SM9SigMasterPrivateKey	Interface for an SM9 (GM/T 0044) signature master private key, the KGC-held root of the identity-based scheme.
SM9SigMasterPublicKey	Interface for an SM9 (GM/T 0044) signature master public key, the published root of the identity-based scheme.
SM9SigUserKeyGenerator	A master private key capable of the KGC user-key extraction for an identity-based signature scheme: deriving a user's key pair from the user's identity (GM/T 0044.2-2016 for SM9, where the signature private-key generation function identifier hid is applied internally).
SM9SigUserPrivateKey	Interface for a user's SM9 (GM/T 0044.2) signature private key (ds_A), derived by the KGC from the signature master private key and the user's identity.
SM9SigUserPublicKey	Interface for a user's SM9 (GM/T 0044.2) signature public key: the signature master public key bound to the user's identity, the key an SM9 Signature verifies against.
XDHKey
XDHPrivateKey
XDHPublicKey