com.nimbusds.jose.crypto

Class RSAEncrypter

java.lang.Object

com.nimbusds.jose.crypto.RSAEncrypter

All Implemented Interfaces:

JCAAware<JWEJCAContext>, JOSEProvider, JWEEncrypter, JWEProvider

@ThreadSafe
public class RSAEncrypter
extends Object
implements JWEEncrypter

RSA encrypter of JWE objects. This class is thread-safe.

Supports the following key management algorithms:

• JWEAlgorithm.RSA1_5
• JWEAlgorithm.RSA_OAEP
• JWEAlgorithm.RSA_OAEP_256

Supports the following content encryption algorithms:

• EncryptionMethod.A128CBC_HS256
• EncryptionMethod.A192CBC_HS384
• EncryptionMethod.A256CBC_HS512
• EncryptionMethod.A128GCM
• EncryptionMethod.A192GCM
• EncryptionMethod.A256GCM
• EncryptionMethod.A128CBC_HS256_DEPRECATED
• EncryptionMethod.A256CBC_HS512_DEPRECATED

Version:

2015-06-08

Author:

David Ortiz, Vladimir Dzhuvinov

Field Summary

Fields

Modifier and Type	Field and Description
static Set<JWEAlgorithm>	SUPPORTED_ALGORITHMS The supported JWE algorithms by the RSA crypto provider class.
static Set<EncryptionMethod>	SUPPORTED_ENCRYPTION_METHODS The supported encryption methods by the RSA crypto provider class.

Constructor Summary

Constructors

Constructor and Description
RSAEncrypter(RSAKey rsaJWK) Creates a new RSA encrypter.
RSAEncrypter(RSAPublicKey publicKey) Creates a new RSA encrypter.

Method Summary

Methods

Modifier and Type	Method and Description
JWECryptoParts	encrypt(JWEHeader header, byte[] clearText) Encrypts the specified clear text of a JWE object.
JWEJCAContext	getJCAContext() Returns the Java Cryptography Architecture (JCA) context.
RSAPublicKey	getPublicKey() Gets the public RSA key.
Set<EncryptionMethod>	supportedEncryptionMethods() Returns the names of the supported encryption methods by the JWE provier.
Set<JWEAlgorithm>	supportedJWEAlgorithms() Returns the names of the supported algorithms by the JWE provider instance.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.nimbusds.jose.JWEProvider

supportedEncryptionMethods, supportedJWEAlgorithms

Methods inherited from interface com.nimbusds.jose.jca.JCAAware

getJCAContext

Field Detail

SUPPORTED_ALGORITHMS

public static final Set<JWEAlgorithm> SUPPORTED_ALGORITHMS

The supported JWE algorithms by the RSA crypto provider class.

SUPPORTED_ENCRYPTION_METHODS

public static final Set<EncryptionMethod> SUPPORTED_ENCRYPTION_METHODS

The supported encryption methods by the RSA crypto provider class.

Constructor Detail

RSAEncrypter

public RSAEncrypter(RSAPublicKey publicKey)

Creates a new RSA encrypter.

Parameters:

publicKey - The public RSA key. Must not be null.

RSAEncrypter

public RSAEncrypter(RSAKey rsaJWK)
             throws JOSEException

Creates a new RSA encrypter.

Parameters:

rsaJWK - The RSA JSON Web Key (JWK). Must not be null.

Throws:

JOSEException - If the RSA JWK extraction failed.

Method Detail

getPublicKey

public RSAPublicKey getPublicKey()

Gets the public RSA key.

Returns:

The public RSA key.

encrypt

public JWECryptoParts encrypt(JWEHeader header,
                     byte[] clearText)
                       throws JOSEException

Description copied from interface: JWEEncrypter

Encrypts the specified clear text of a JWE object.

Specified by:

encrypt in interface JWEEncrypter

Parameters:

header - The JSON Web Encryption (JWE) header. Must specify a supported JWE algorithm and method. Must not be null.

clearText - The clear text to encrypt. Must not be null.

Returns:

The resulting JWE crypto parts.

Throws:

JOSEException - If the JWE algorithm or method is not supported or if encryption failed for some other internal reason.

supportedJWEAlgorithms

public Set<JWEAlgorithm> supportedJWEAlgorithms()

Description copied from interface: JWEProvider

Returns the names of the supported algorithms by the JWE provider instance. These correspond to the alg JWE header parameter.

Specified by:

supportedJWEAlgorithms in interface JWEProvider

Returns:

The supported JWE algorithms, empty set if none.

supportedEncryptionMethods

public Set<EncryptionMethod> supportedEncryptionMethods()

Description copied from interface: JWEProvider

Returns the names of the supported encryption methods by the JWE provier. These correspond to the enc JWE header parameter.

Specified by:

supportedEncryptionMethods in interface JWEProvider

Returns:

The supported encryption methods, empty set if none.

getJCAContext

public JWEJCAContext getJCAContext()

Description copied from interface: JCAAware

Returns the Java Cryptography Architecture (JCA) context. May be used to set a specific JCA security provider or secure random generator.

Specified by:

getJCAContext in interface JCAAware<JWEJCAContext>

Returns:

The JCA context. Not null.