Package com.nimbusds.jose.crypto.impl

Class RSAKeyUtils

java.lang.Object

com.nimbusds.jose.crypto.impl.RSAKeyUtils

public class RSAKeyUtils
extends Object

RSA JWK conversion utility.

Constructor Summary

Constructors

Constructor	Description
RSAKeyUtils()

Method Summary

Modifier and Type	Method	Description
static int	keyBitLength(PrivateKey privateKey)	Returns the length in bits of the specified RSA private key.
static PrivateKey	toRSAPrivateKey(RSAKey rsaJWK)	Returns the private RSA key of the specified RSA JWK.

Methods inherited from class java.lang.Object

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

Constructor Details

RSAKeyUtils

public RSAKeyUtils()

Method Details

toRSAPrivateKey

public static PrivateKey toRSAPrivateKey(RSAKey rsaJWK)
                                  throws JOSEException

Returns the private RSA key of the specified RSA JWK. Supports PKCS#11 keys stores.

Parameters:

rsaJWK - The RSA JWK. Must not be null.

Returns:

The private RSA key.

Throws:

JOSEException - If the RSA JWK doesn't contain a private part.

keyBitLength

public static int keyBitLength(PrivateKey privateKey)

Returns the length in bits of the specified RSA private key.

Parameters:

privateKey - The RSA private key. Must not be null.

Returns:

The key length in bits, -1 if the length couldn't be determined, e.g. for a PKCS#11 backed key which doesn't expose an RSAPrivateKey interface or support the getModulus() method.