com.fr.cert.token.impl.crypto

类 RsaProvider

java.lang.Object

com.fr.cert.token.impl.crypto.RsaProvider

直接已知子类:

RsaSignatureValidator, RsaSigner

public abstract class RsaProvider
extends java.lang.Object

字段概要

字段

限定符和类型	字段和说明
protected SignatureAlgorithm	alg
static java.security.SecureRandom	DEFAULT_SECURE_RANDOM JJWT's default SecureRandom number generator.
protected java.security.Key	key

构造器概要

构造器

限定符	构造器和说明
protected	RsaProvider(SignatureAlgorithm alg, java.security.Key key)

方法概要

方法

限定符和类型	方法和说明
protected java.security.Signature	createSignatureInstance()
protected void	doSetParameter(java.security.Signature sig, java.security.spec.PSSParameterSpec spec)
static java.security.KeyPair	generateKeyPair() Generates a new RSA secure-random 4096 bit key pair. 4096 bits is JJWT's current recommended minimum key size for use in modern applications (during or after year 2015).
static java.security.KeyPair	generateKeyPair(int keySizeInBits) Generates a new RSA secure-randomly key pair of the specified size using JJWT's default SecureRandom instance.
static java.security.KeyPair	generateKeyPair(int keySizeInBits, java.security.SecureRandom random) Generates a new RSA secure-random key pair of the specified size using the given SecureRandom number generator.
protected static java.security.KeyPair	generateKeyPair(java.lang.String jcaAlgorithmName, int keySizeInBits, java.security.SecureRandom random) Generates a new secure-random key pair of the specified size using the specified SecureRandom according to the specified jcaAlgorithmName.
protected java.security.Signature	getSignatureInstance()
protected boolean	isBouncyCastleAvailable()
protected void	setParameter(java.security.Signature sig, java.security.spec.PSSParameterSpec spec)

从类继承的方法 java.lang.Object

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

字段详细资料

DEFAULT_SECURE_RANDOM

public static final java.security.SecureRandom DEFAULT_SECURE_RANDOM

JJWT's default SecureRandom number generator. This RNG is initialized using the JVM default as follows:

 static {
     DEFAULT_SECURE_RANDOM = new SecureRandom();
     DEFAULT_SECURE_RANDOM.nextBytes(new byte[64]);
 }
 

nextBytes is called to force the RNG to initialize itself if not already initialized. The byte array is not used and discarded immediately for garbage collection.

alg

protected final SignatureAlgorithm alg

key

protected final java.security.Key key

构造器详细资料

RsaProvider

protected RsaProvider(SignatureAlgorithm alg,
           java.security.Key key)

方法详细资料

createSignatureInstance

protected java.security.Signature createSignatureInstance()

setParameter

protected void setParameter(java.security.Signature sig,
                java.security.spec.PSSParameterSpec spec)

doSetParameter

protected void doSetParameter(java.security.Signature sig,
                  java.security.spec.PSSParameterSpec spec)
                       throws java.security.InvalidAlgorithmParameterException

抛出:

java.security.InvalidAlgorithmParameterException

generateKeyPair

public static java.security.KeyPair generateKeyPair()

Generates a new RSA secure-random 4096 bit key pair. 4096 bits is JJWT's current recommended minimum key size for use in modern applications (during or after year 2015). This is a convenience method that immediately delegates to generateKeyPair(int).

返回:

a new RSA secure-random 4096 bit key pair.

从以下版本开始:

0.5

另请参阅:

generateKeyPair(int), generateKeyPair(int, SecureRandom), generateKeyPair(String, int, SecureRandom)

generateKeyPair

public static java.security.KeyPair generateKeyPair(int keySizeInBits)

Generates a new RSA secure-randomly key pair of the specified size using JJWT's default SecureRandom instance. This is a convenience method that immediately delegates to generateKeyPair(int, SecureRandom).

参数:

keySizeInBits - the key size in bits (NOT bytes).

返回:

a new RSA secure-random key pair of the specified size.

从以下版本开始:

0.5

另请参阅:

generateKeyPair(), generateKeyPair(int, SecureRandom), generateKeyPair(String, int, SecureRandom)

generateKeyPair

public static java.security.KeyPair generateKeyPair(int keySizeInBits,
                                    java.security.SecureRandom random)

Generates a new RSA secure-random key pair of the specified size using the given SecureRandom number generator. This is a convenience method that immediately delegates to generateKeyPair(String, int, SecureRandom) using RSA as the jcaAlgorithmName argument.

参数:

keySizeInBits - the key size in bits (NOT bytes)

random - the secure random number generator to use during key generation.

返回:

a new RSA secure-random key pair of the specified size using the given SecureRandom number generator.

从以下版本开始:

0.5

另请参阅:

generateKeyPair(), generateKeyPair(int), generateKeyPair(String, int, SecureRandom)

generateKeyPair

protected static java.security.KeyPair generateKeyPair(java.lang.String jcaAlgorithmName,
                                    int keySizeInBits,
                                    java.security.SecureRandom random)

Generates a new secure-random key pair of the specified size using the specified SecureRandom according to the specified jcaAlgorithmName.

参数:

jcaAlgorithmName - the name of the JCA algorithm to use for key pair generation, for example, RSA.

keySizeInBits - the key size in bits (NOT bytes)

random - the SecureRandom generator to use during key generation.

返回:

a new secure-randomly generated key pair of the specified size using the specified SecureRandom according to the specified jcaAlgorithmName.

从以下版本开始:

0.5

另请参阅:

generateKeyPair(), generateKeyPair(int), generateKeyPair(int, SecureRandom)

getSignatureInstance

protected java.security.Signature getSignatureInstance()
                                                throws java.security.NoSuchAlgorithmException

抛出:

java.security.NoSuchAlgorithmException

isBouncyCastleAvailable

protected boolean isBouncyCastleAvailable()