Package org.wildfly.security.x500.cert.util

Class KeyUtil

java.lang.Object

org.wildfly.security.x500.cert.util.KeyUtil

public final class KeyUtil
extends Object

Key utility methods.

Since:

1.5.0

Author:

Farah Juma

Constructor Summary

Constructors

Constructor	Description
KeyUtil()

Method Summary

Modifier and Type	Method	Description
static String	getDefaultCompatibleSignatureAlgorithmName(String keyAlgorithmName, int keySize)	Get the default compatible signature algorithm name for the given key algorithm name and key size.
static String	getDefaultCompatibleSignatureAlgorithmName(PrivateKey privateKey)	Get the default compatible signature algorithm name for the given private key.
private static String	getDefaultMessageDigestAlgorithmName(String keyAlgorithmName, int keySize)	Get the default message digest algorithm name for the given key algorithm name and key size.
static byte[]	getKeyIdentifier(PublicKey publicKey)	Get the key identifier, which is composed of the 160-bit SHA-1 hash of the value of the BIT STRING subjectPublicKey (excluding the tag, length, and number of unused bits), as per RFC 3280.
static int	getKeySize(Key key)	Get the key size for the given Key.

Methods inherited from class java.lang.Object

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

Constructor Detail

KeyUtil

public KeyUtil()

Method Detail

getDefaultCompatibleSignatureAlgorithmName

public static String getDefaultCompatibleSignatureAlgorithmName(PrivateKey privateKey)
                                                         throws IllegalArgumentException

Get the default compatible signature algorithm name for the given private key.

Parameters:

privateKey - the private key

Returns:

the default compatible signature algorithm name for the given private key or null if the default compatible signature algorithm name cannot not be determined

Throws:

IllegalArgumentException - if the key size cannot be determined from the given private key

getDefaultCompatibleSignatureAlgorithmName

public static String getDefaultCompatibleSignatureAlgorithmName(String keyAlgorithmName,
                                                                int keySize)

Get the default compatible signature algorithm name for the given key algorithm name and key size.

Parameters:

keyAlgorithmName - the key algorithm name

keySize - the key size

Returns:

the default compatible signature algorithm name for the given key algorithm name and key size or null if the default compatible signature algorithm name cannot not be determined

getDefaultMessageDigestAlgorithmName

private static String getDefaultMessageDigestAlgorithmName(String keyAlgorithmName,
                                                           int keySize)

Get the default message digest algorithm name for the given key algorithm name and key size.

Parameters:

keyAlgorithmName - the key algorithm name

keySize - the key size

Returns:

the default message digest algorithm name or null if the default message algorithm name cannot be determined

getKeySize

public static int getKeySize(Key key)

Get the key size for the given Key.

Parameters:

key - the key

Returns:

the key size or -1 if the key size cannot be determined

getKeyIdentifier

public static byte[] getKeyIdentifier(PublicKey publicKey)

Get the key identifier, which is composed of the 160-bit SHA-1 hash of the value of the BIT STRING subjectPublicKey (excluding the tag, length, and number of unused bits), as per RFC 3280.

Parameters:

publicKey - the public key

Returns:

the key identifier