jcifs.internal.smb1

Class SMB1SigningDigest

java.lang.Object

jcifs.internal.smb1.SMB1SigningDigest

All Implemented Interfaces:

SMBSigningDigest

public class SMB1SigningDigest
extends Object
implements SMBSigningDigest

Constructor Summary

Constructors

Constructor and Description
SMB1SigningDigest(byte[] macSigningKey) This constructor used to instance a SigningDigest object for signing/verifying SMB using kerberos session key.
SMB1SigningDigest(byte[] macSigningKey, boolean bypass)
SMB1SigningDigest(byte[] macSigningKey, boolean bypass, int initialSequence)
SMB1SigningDigest(byte[] macSigningKey, int initialSequence) Construct a digest with a non-zero starting sequence number
SMB1SigningDigest(SmbTransportInternal transport, NtlmPasswordAuthenticator auth)

Method Summary

Modifier and Type	Method and Description
byte[]	digest()
void	sign(byte[] data, int offset, int length, CommonServerMessageBlock request, CommonServerMessageBlock response) Performs MAC signing of the SMB.
String	toString()
void	update(byte[] input, int offset, int len) Update digest with data
boolean	verify(byte[] data, int offset, int l, int extraPad, CommonServerMessageBlock m) Performs MAC signature verification.
static void	writeUTime(Configuration cfg, long t, byte[] dst, int dstIndex)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

SMB1SigningDigest

public SMB1SigningDigest(byte[] macSigningKey,
                         boolean bypass)

Parameters:

macSigningKey -

bypass -

SMB1SigningDigest

public SMB1SigningDigest(byte[] macSigningKey,
                         boolean bypass,
                         int initialSequence)

Parameters:

macSigningKey -

bypass -

initialSequence -

SMB1SigningDigest

public SMB1SigningDigest(byte[] macSigningKey)

This constructor used to instance a SigningDigest object for signing/verifying SMB using kerberos session key. The MAC Key = concat(Session Key, Digest of Challenge); Because of Kerberos Authentication don't have challenge, The MAC Key = Session Key

Parameters:

macSigningKey - The MAC key used to sign or verify SMB.

SMB1SigningDigest

public SMB1SigningDigest(byte[] macSigningKey,
                         int initialSequence)

Construct a digest with a non-zero starting sequence number

Parameters:

macSigningKey -

initialSequence -

SMB1SigningDigest

public SMB1SigningDigest(SmbTransportInternal transport,
                         NtlmPasswordAuthenticator auth)
                  throws SmbException

Parameters:

transport -

auth -

Throws:

SmbException

Method Detail

update

public void update(byte[] input,
                   int offset,
                   int len)

Update digest with data

Parameters:

input -

offset -

len -

digest

public byte[] digest()

Returns:

calculated digest

sign

public void sign(byte[] data,
                 int offset,
                 int length,
                 CommonServerMessageBlock request,
                 CommonServerMessageBlock response)

Performs MAC signing of the SMB. This is done as follows. The signature field of the SMB is overwritten with the sequence number; The MD5 digest of the MAC signing key + the entire SMB is taken; The first 8 bytes of this are placed in the signature field.

Specified by:

sign in interface SMBSigningDigest

Parameters:

data - The data.

offset - The starting offset at which the SMB header begins.

length - The length of the SMB data starting at offset.

request - request message

response - response message

See Also:

SMBSigningDigest.sign(byte[], int, int, jcifs.internal.CommonServerMessageBlock, jcifs.internal.CommonServerMessageBlock)

verify

public boolean verify(byte[] data,
                      int offset,
                      int l,
                      int extraPad,
                      CommonServerMessageBlock m)

Performs MAC signature verification. This calculates the signature of the SMB and compares it to the signature field on the SMB itself.

Specified by:

verify in interface SMBSigningDigest

Parameters:

data - The data.

offset - The starting offset at which the SMB header begins.

extraPad - extra padding to include in signature

m - The message to verify

Returns:

whether verification was unsuccessful

See Also:

SMBSigningDigest.verify(byte[], int, int, int, jcifs.internal.CommonServerMessageBlock)

toString

public String toString()

Overrides:

toString in class Object

writeUTime

public static void writeUTime(Configuration cfg,
                              long t,
                              byte[] dst,
                              int dstIndex)

Parameters:

cfg -

t -

dst -

dstIndex -