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Added in API level 1

Summary:

AlgorithmParameterSpec

public interface AlgorithmParameterSpec

java.security.spec.AlgorithmParameterSpec

Known indirect subclasses

AeadParameterSpec, ChaCha20ParameterSpec, DHGenParameterSpec, DHParameterSpec, DSAGenParameterSpec, DSAParameterSpec, ECGenParameterSpec, ECParameterSpec, EdDSAParameterSpec, GCMParameterSpec, IvParameterSpec, KdfParameterSpec, KemParameterSpec, KeyGenParameterSpec, KeyPairGeneratorSpec, and 8 others.

AeadParameterSpec	Specifies algorithm parameters for the AEAD component of an HPKE suite which are determined by standard names as per RFC 9180.
ChaCha20ParameterSpec	This class specifies the parameters used with the ChaCha20 algorithm.
DHGenParameterSpec	This class specifies the set of parameters used for generating Diffie-Hellman (system) parameters for use in Diffie-Hellman key agreement.
DHParameterSpec	This class specifies the set of parameters used with the Diffie-Hellman algorithm, as specified in PKCS #3: Diffie-Hellman Key-Agreement Standard.
DSAGenParameterSpec	This immutable class specifies the set of parameters used for generating DSA parameters as specified in FIPS 186-3 Digital Signature Standard (DSS).
DSAParameterSpec	This class specifies the set of parameters used with the DSA algorithm.
ECGenParameterSpec	This immutable class specifies the set of parameters used for generating elliptic curve (EC) domain parameters.
ECParameterSpec	This immutable class specifies the set of domain parameters used with elliptic curve cryptography (ECC).
EdDSAParameterSpec	A class used to specify EdDSA signature and verification parameters.
GCMParameterSpec	Specifies the set of parameters required by a `Cipher` using the Galois/Counter Mode (GCM) mode.
IvParameterSpec	This class specifies an initialization vector (IV).
KdfParameterSpec	Specifies algorithm parameters for the KDF component of an HPKE suite which are determined by standard names as per RFC 9180.
KemParameterSpec	Specifies algorithm parameters for the KEM component of an HPKE suite which are determined by standard names as per RFC 9180.
KeyGenParameterSpec	`AlgorithmParameterSpec` for initializing a `KeyPairGenerator` or a `KeyGenerator` of the Android Keystore system.
KeyPairGeneratorSpec	This class was deprecated in API level 23. Use `KeyGenParameterSpec` instead.
MGF1ParameterSpec	This class specifies the set of parameters used with mask generation function MGF1 in OAEP Padding and RSASSA-PSS signature scheme, as defined in the PKCS#1 v2.2 standard.
NamedParameterSpec	This class is used to specify any algorithm parameters that are determined by a standard name.
OAEPParameterSpec	This class specifies the set of parameters used with OAEP Padding, as defined in the PKCS #1 standard.
PBEParameterSpec	This class specifies the set of parameters used with password-based encryption (PBE), as defined in the PKCS #5 standard.
PSSParameterSpec	This class specifies a parameter spec for RSASSA-PSS signature scheme, as defined in the PKCS#1 v2.2 standard.
RC2ParameterSpec	This class specifies the parameters used with the RC2 algorithm.
RC5ParameterSpec	This class specifies the parameters used with the RC5 algorithm.
RSAKeyGenParameterSpec	This class specifies the set of parameters used to generate an RSA key pair.

A (transparent) specification of cryptographic parameters.

This interface contains no methods or constants. Its only purpose is to group (and provide type safety for) all parameter specifications. All parameter specifications must implement this interface.

See also:

Content and code samples on this page are subject to the licenses described in the Content License. Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.

Last updated 2026-08-03 UTC.

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