Module java.base

Package java.security.spec

Provides classes and interfaces for key specifications and algorithm parameter specifications.

A key specification is a transparent representation of the key material that constitutes a key. A key may be specified in an algorithm-specific way, or in an algorithm-independent encoding format (such as ASN.1). This package contains key specifications for DSA public and private keys, RSA public and private keys, PKCS #8 private keys in DER-encoded format, and X.509 public and private keys in DER-encoded format.

An algorithm parameter specification is a transparent representation of the sets of parameters used with an algorithm. This package contains an algorithm parameter specification for parameters used with the DSA algorithm.

Package Specification

• PKCS #1: RSA Cryptography Specifications, Version 2.2 (RFC 8017)
• PKCS #8: Private-Key Information Syntax Standard, Version 1.2, November 1993
• Federal Information Processing Standards Publication (FIPS PUB) 186: Digital Signature Standard (DSS)

Related Documentation

For documentation that includes information about algorithm parameter and key specifications, please see:

• Java Cryptography Architecture (JCA) Reference Guide
• How to Implement a Provider in the Java Cryptography Architecture

Since:

1.2

Interface Summary

Interface	Description
AlgorithmParameterSpec	A (transparent) specification of cryptographic parameters.
ECField	This interface represents an elliptic curve (EC) finite field.
KeySpec	A (transparent) specification of the key material that constitutes a cryptographic key.

Class Summary

Class	Description
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.
DSAPrivateKeySpec	This class specifies a DSA private key with its associated parameters.
DSAPublicKeySpec	This class specifies a DSA public key with its associated parameters.
ECFieldF2m	This immutable class defines an elliptic curve (EC) characteristic 2 finite field.
ECFieldFp	This immutable class defines an elliptic curve (EC) prime finite field.
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).
ECPoint	This immutable class represents a point on an elliptic curve (EC) in affine coordinates.
ECPrivateKeySpec	This immutable class specifies an elliptic curve private key with its associated parameters.
ECPublicKeySpec	This immutable class specifies an elliptic curve public key with its associated parameters.
EllipticCurve	This immutable class holds the necessary values needed to represent an elliptic curve.
EncodedKeySpec	This class represents a public or private key in encoded format.
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.
PKCS8EncodedKeySpec	This class represents the ASN.1 encoding of a private key, encoded according to the ASN.1 type PrivateKeyInfo.
PSSParameterSpec	This class specifies a parameter spec for RSASSA-PSS signature scheme, as defined in the PKCS#1 v2.2 standard.
RSAKeyGenParameterSpec	This class specifies the set of parameters used to generate an RSA key pair.
RSAMultiPrimePrivateCrtKeySpec	This class specifies an RSA multi-prime private key, as defined in the PKCS#1 v2.2 standard using the Chinese Remainder Theorem (CRT) information values for efficiency.
RSAOtherPrimeInfo	This class represents the triplet (prime, exponent, and coefficient) inside RSA's OtherPrimeInfo structure, as defined in the PKCS#1 v2.2 standard.
RSAPrivateCrtKeySpec	This class specifies an RSA private key, as defined in the PKCS#1 v2.2 standard, using the Chinese Remainder Theorem (CRT) information values for efficiency.
RSAPrivateKeySpec	This class specifies an RSA private key.
RSAPublicKeySpec	This class specifies an RSA public key.
X509EncodedKeySpec	This class represents the ASN.1 encoding of a public key, encoded according to the ASN.1 type SubjectPublicKeyInfo.
XECPrivateKeySpec	A class representing elliptic curve private keys as defined in RFC 7748, including the curve and other algorithm parameters.
XECPublicKeySpec	A class representing elliptic curve public keys as defined in RFC 7748, including the curve and other algorithm parameters.

Exception Summary

Exception	Description
InvalidKeySpecException	This is the exception for invalid key specifications.
InvalidParameterSpecException	This is the exception for invalid parameter specifications.