Java Generate Elliptic Curve Key

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Oracle Java documentation is a little sparse on the topic, but it does look like with the SunJCE, a key generated asEC can be used with either ECDH or ECDSA. (I'm not an Elliptic curve expert, but) Theoretically, I believe that the domain parameters for ECDH and ECDSA have the same form, that is the equation of the curve and a base point G. Generate a public key in an elliptic curve algorithm using a given private key. Here is the code that I use to generate the java.security.PrivateKey. Field - the finite field that this elliptic curve is over. A - the first coefficient of this elliptic curve. B - the second coefficient of this elliptic curve. Gears of war 1 key generator. Seed - the bytes used during curve generation for later validation. Contents of this array are copied to protect against subsequent modification. Home » OpenPGP Library for.NET » PGP examples with.NET » Generate Elliptic Curve (ECC) pgp key in C# and VB.NET Generate Elliptic Curve (ECC) pgp key in C# and VB.NET In this chapter we will introduce the rather new Elliptic Curve Cryptography (ECC or EC for short) OpenPGP keys.

Java™ Platform
Standard Ed. 8
Provides classes and interfaces for key specifications and algorithm parameter specifications.

See: Description

  • Interface Summary
    InterfaceDescription
    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
    ClassDescription
    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.
    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
    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.
  • Exception Summary
    ExceptionDescription
    InvalidKeySpecException
    This is the exception for invalid key specifications.
    InvalidParameterSpecException
    This is the exception for invalid parameter specifications.

Package java.security.spec Description

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.

Elliptic Curves Pdf

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.

Java Generate Elliptic Curve Key

Elliptic Curve Crypto

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 Generate Elliptic Curve Key West

Since:
1.2
Java Generate Elliptic Curve Key

Elliptic Curve Key Generation

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Java Generate Elliptic Curve Key West

Java™ Platform
Standard Ed. 8

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For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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Elliptic Curve Cryptography

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