# 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.

- Since:
- 1.2

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 | 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 |

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 |

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 | Description |
---|---|

InvalidKeySpecException | This is the exception for invalid key specifications. |

InvalidParameterSpecException | This is the exception for invalid parameter specifications. |