sun.security.mule.krb5
Class Checksum

java.lang.Object
  sun.security.mule.krb5.Checksum

public class Checksum
extends Object

This class encapsulates the concept of a Kerberos checksum.

Field Summary

static int	CKSUMTYPE_CRC32
static int	CKSUMTYPE_DES_MAC
static int	CKSUMTYPE_DES_MAC_K
static int	CKSUMTYPE_HMAC_MD5_ARCFOUR
static int	CKSUMTYPE_HMAC_SHA1_96_AES128
static int	CKSUMTYPE_HMAC_SHA1_96_AES256
static int	CKSUMTYPE_HMAC_SHA1_DES3_KD
static int	CKSUMTYPE_NULL
static int	CKSUMTYPE_RSA_MD4
static int	CKSUMTYPE_RSA_MD4_DES
static int	CKSUMTYPE_RSA_MD4_DES_K
static int	CKSUMTYPE_RSA_MD5
static int	CKSUMTYPE_RSA_MD5_DES
static int	CKSUMTYPE_USE_DEFAULT

Constructor Summary

Checksum(byte[] data, int new_cksumType, Config kerberosConfig)
Constructs a new Checksum using the raw data and type.

Checksum(int new_cksumType, byte[] data, Config kerberosConfig)
Constructs a new Checksum by calculating the checksum over the data using specified checksum type.

Checksum(int new_cksumType, byte[] data, EncryptionKey key, int usage, Config kerberosConfig)
Constructs a new Checksum by calculating the keyed checksum over the data using specified checksum type.

Method Summary

byte[]	asn1Encode() Encodes a Checksum object.
boolean	equals(Object obj)
byte[]	getBytes() Returns the raw bytes of the checksum, not in ASN.1 encoded form.
static int	getChecksumdefault(Config kerberosConfig)
int	getType()
int	hashCode()
static Checksum	parse(sun.security.util.DerInputStream data, byte explicitTag, boolean optional) Parse (unmarshal) a checksum object from a DER input stream.
boolean	verifyKeyedChecksum(byte[] data, EncryptionKey key, int usage) Verifies the keyed checksum over the data passed in.

Methods inherited from class java.lang.Object

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

Field Detail

CKSUMTYPE_NULL

public static final int CKSUMTYPE_NULL

See Also:

Constant Field Values

CKSUMTYPE_CRC32

public static final int CKSUMTYPE_CRC32

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Constant Field Values

CKSUMTYPE_RSA_MD4

public static final int CKSUMTYPE_RSA_MD4

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Constant Field Values

CKSUMTYPE_RSA_MD4_DES

public static final int CKSUMTYPE_RSA_MD4_DES

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Constant Field Values

CKSUMTYPE_DES_MAC

public static final int CKSUMTYPE_DES_MAC

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Constant Field Values

CKSUMTYPE_DES_MAC_K

public static final int CKSUMTYPE_DES_MAC_K

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Constant Field Values

CKSUMTYPE_RSA_MD4_DES_K

public static final int CKSUMTYPE_RSA_MD4_DES_K

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Constant Field Values

CKSUMTYPE_RSA_MD5

public static final int CKSUMTYPE_RSA_MD5

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Constant Field Values

CKSUMTYPE_RSA_MD5_DES

public static final int CKSUMTYPE_RSA_MD5_DES

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Constant Field Values

CKSUMTYPE_HMAC_SHA1_DES3_KD

public static final int CKSUMTYPE_HMAC_SHA1_DES3_KD

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Constant Field Values

CKSUMTYPE_HMAC_SHA1_96_AES128

public static final int CKSUMTYPE_HMAC_SHA1_96_AES128

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Constant Field Values

CKSUMTYPE_HMAC_SHA1_96_AES256

public static final int CKSUMTYPE_HMAC_SHA1_96_AES256

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Constant Field Values

CKSUMTYPE_HMAC_MD5_ARCFOUR

public static final int CKSUMTYPE_HMAC_MD5_ARCFOUR

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Constant Field Values

CKSUMTYPE_USE_DEFAULT

public static final int CKSUMTYPE_USE_DEFAULT

See Also:

Constant Field Values

Constructor Detail

Checksum

public Checksum(byte[] data,
                int new_cksumType,
                Config kerberosConfig)

Constructs a new Checksum using the raw data and type.

Checksum

public Checksum(int new_cksumType,
                byte[] data,
                Config kerberosConfig)
         throws KdcErrException,
                KrbCryptoException

Constructs a new Checksum by calculating the checksum over the data using specified checksum type.

Throws:

KdcErrException

KrbCryptoException

Checksum

public Checksum(int new_cksumType,
                byte[] data,
                EncryptionKey key,
                int usage,
                Config kerberosConfig)
         throws KdcErrException,
                KrbApErrException,
                KrbCryptoException

Constructs a new Checksum by calculating the keyed checksum over the data using specified checksum type.

Throws:

KdcErrException

KrbApErrException

KrbCryptoException

Method Detail

getChecksumdefault

public static int getChecksumdefault(Config kerberosConfig)

verifyKeyedChecksum

public boolean verifyKeyedChecksum(byte[] data,
                                   EncryptionKey key,
                                   int usage)
                            throws KdcErrException,
                                   KrbApErrException,
                                   KrbCryptoException

Verifies the keyed checksum over the data passed in.

Throws:

KdcErrException

KrbApErrException

KrbCryptoException

asn1Encode

public byte[] asn1Encode()
                  throws Asn1Exception,
                         IOException

Encodes a Checksum object. Checksum ::= SEQUENCE { cksumtype [0] Int32, checksum [1] OCTET STRING }

This definition reflects the Network Working Group RFC 4120 specification available at http://www.ietf.org/rfc/rfc4120.txt.

Returns:

byte array of enocded Checksum.

Throws:

Asn1Exception - if an error occurs while decoding an ASN1 encoded data.

IOException - if an I/O error occurs while reading encoded data.

parse

public static Checksum parse(sun.security.util.DerInputStream data,
                             byte explicitTag,
                             boolean optional)
                      throws Asn1Exception,
                             IOException

Parse (unmarshal) a checksum object from a DER input stream. This form parsing might be used when expanding a value which is part of a constructed sequence and uses explicitly tagged type.

Parameters:

data - the Der input stream value, which contains one or more marshaled value.

explicitTag - tag number.

optional - indicates if this data field is optional

Returns:

an instance of Checksum.

Throws:

Asn1Exception - if an error occurs while decoding an ASN1 encoded data.

IOException - if an I/O error occurs while reading encoded data.

getBytes

public final byte[] getBytes()

Returns the raw bytes of the checksum, not in ASN.1 encoded form.

getType

public final int getType()

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object