org.xipki.security.util

Class KeyUtil

java.lang.Object

org.xipki.security.util.KeyUtil

public class KeyUtil
extends Object

Key utility class.

Since:

2.0.0

Author:

Lijun Liao

Method Summary

Modifier and Type	Method and Description
static PrivateKey	convertXDHToDummyEdDSAPrivateKey(PrivateKey key) Convert XDH edwards private key to EdDSA private key.
static ECPublicKey	createECPublicKey(byte[] encodedAlgorithmIdParameters, byte[] encodedPoint)
static org.bouncycastle.asn1.x509.SubjectPublicKeyInfo	createSubjectPublicKeyInfo(PublicKey publicKey)
static KeyPair	generateDSAKeypair(DSAParameterSpec dsaParamSpec, SecureRandom random)
static KeyPair	generateDSAKeypair(org.bouncycastle.crypto.params.DSAParameters dsaParams, SecureRandom random)
static KeyPair	generateDSAKeypair(int plength, int qlength, SecureRandom random)
static DSAPublicKey	generateDSAPublicKey(DSAPublicKeySpec keySpec)
static KeyPair	generateECKeypair(org.bouncycastle.asn1.ASN1ObjectIdentifier curveId, SecureRandom random)
static KeyPair	generateEdECKeypair(org.bouncycastle.asn1.ASN1ObjectIdentifier curveId, SecureRandom random)
static org.bouncycastle.crypto.params.AsymmetricKeyParameter	generatePrivateKeyParameter(PrivateKey key)
static PublicKey	generatePublicKey(org.bouncycastle.asn1.x509.SubjectPublicKeyInfo pkInfo)
static org.bouncycastle.crypto.params.AsymmetricKeyParameter	generatePublicKeyParameter(PublicKey key)
static KeyPair	generateRSAKeypair(int keysize, BigInteger publicExponent, SecureRandom random)
static RSAPublicKey	generateRSAPublicKey(RSAPublicKeySpec keySpec)
static KeyStore	getKeyStore(String storeType)
static byte[]	getUncompressedEncodedECPoint(ECPoint point, int orderBitLength)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getKeyStore

public static KeyStore getKeyStore(String storeType)
                            throws KeyStoreException

Throws:

KeyStoreException

generateRSAKeypair

public static KeyPair generateRSAKeypair(int keysize,
                                         BigInteger publicExponent,
                                         SecureRandom random)
                                  throws NoSuchAlgorithmException,
                                         NoSuchProviderException,
                                         InvalidAlgorithmParameterException

Throws:

NoSuchAlgorithmException

NoSuchProviderException

InvalidAlgorithmParameterException

generateDSAKeypair

public static KeyPair generateDSAKeypair(int plength,
                                         int qlength,
                                         SecureRandom random)
                                  throws NoSuchAlgorithmException,
                                         NoSuchProviderException,
                                         InvalidAlgorithmParameterException

Throws:

NoSuchAlgorithmException

NoSuchProviderException

InvalidAlgorithmParameterException

generateDSAKeypair

public static KeyPair generateDSAKeypair(org.bouncycastle.crypto.params.DSAParameters dsaParams,
                                         SecureRandom random)
                                  throws NoSuchAlgorithmException,
                                         NoSuchProviderException,
                                         InvalidAlgorithmParameterException

Throws:

NoSuchAlgorithmException

NoSuchProviderException

InvalidAlgorithmParameterException

generateDSAKeypair

public static KeyPair generateDSAKeypair(DSAParameterSpec dsaParamSpec,
                                         SecureRandom random)
                                  throws NoSuchAlgorithmException,
                                         NoSuchProviderException,
                                         InvalidAlgorithmParameterException

Throws:

NoSuchAlgorithmException

NoSuchProviderException

InvalidAlgorithmParameterException

generateDSAPublicKey

public static DSAPublicKey generateDSAPublicKey(DSAPublicKeySpec keySpec)
                                         throws InvalidKeySpecException

Throws:

InvalidKeySpecException

generateEdECKeypair

public static KeyPair generateEdECKeypair(org.bouncycastle.asn1.ASN1ObjectIdentifier curveId,
                                          SecureRandom random)
                                   throws NoSuchAlgorithmException,
                                          NoSuchProviderException,
                                          InvalidAlgorithmParameterException

Throws:

NoSuchAlgorithmException

NoSuchProviderException

InvalidAlgorithmParameterException

generateECKeypair

public static KeyPair generateECKeypair(org.bouncycastle.asn1.ASN1ObjectIdentifier curveId,
                                        SecureRandom random)
                                 throws NoSuchAlgorithmException,
                                        NoSuchProviderException,
                                        InvalidAlgorithmParameterException

Throws:

NoSuchAlgorithmException

NoSuchProviderException

InvalidAlgorithmParameterException

convertXDHToDummyEdDSAPrivateKey

public static PrivateKey convertXDHToDummyEdDSAPrivateKey(PrivateKey key)
                                                   throws InvalidKeySpecException

Convert XDH edwards private key to EdDSA private key. As the name indicates, the converted key is dummy, you cannot verify the signature signed with the converted private key against the correspond public key.

Parameters:

key - XDH private key

Returns:

the corresponding EdDSA private key (dummy)

Throws:

InvalidKeySpecException - If key is invalid.

generatePublicKey

public static PublicKey generatePublicKey(org.bouncycastle.asn1.x509.SubjectPublicKeyInfo pkInfo)
                                   throws InvalidKeySpecException

Throws:

InvalidKeySpecException

generateRSAPublicKey

public static RSAPublicKey generateRSAPublicKey(RSAPublicKeySpec keySpec)
                                         throws InvalidKeySpecException

Throws:

InvalidKeySpecException

generatePrivateKeyParameter

public static org.bouncycastle.crypto.params.AsymmetricKeyParameter generatePrivateKeyParameter(PrivateKey key)
                                                                                         throws InvalidKeyException

Throws:

InvalidKeyException

generatePublicKeyParameter

public static org.bouncycastle.crypto.params.AsymmetricKeyParameter generatePublicKeyParameter(PublicKey key)
                                                                                        throws InvalidKeyException

Throws:

InvalidKeyException

createSubjectPublicKeyInfo

public static org.bouncycastle.asn1.x509.SubjectPublicKeyInfo createSubjectPublicKeyInfo(PublicKey publicKey)
                                                                                  throws InvalidKeyException

Throws:

InvalidKeyException

createECPublicKey

public static ECPublicKey createECPublicKey(byte[] encodedAlgorithmIdParameters,
                                            byte[] encodedPoint)
                                     throws InvalidKeySpecException

Throws:

InvalidKeySpecException

getUncompressedEncodedECPoint

public static byte[] getUncompressedEncodedECPoint(ECPoint point,
                                                   int orderBitLength)