C# Class SnmpSharpNet.AuthenticationMD5

MD5 Authentication class.

Inheritance: IAuthenticationDigest

Datei anzeigen Open project: griffina/SnmpSharpNet

Public Methods

Method	Description
AuthenticationMD5 ( ) : System	Standard constructor
ComputeHash ( byte data, int offset, int count ) : byte[]	Compute hash using authentication protocol.
PasswordToKey ( byte userPassword, byte engineID ) : byte[]	Convert user password to acceptable authentication key.
authenticate ( byte authKey, byte wholeMessage ) : byte[]	Authenticate packet and return authentication parameters value to the caller
authenticate ( byte authenticationSecret, byte engineId, byte wholeMessage ) : byte[]	Authenticate packet and return authentication parameters value to the caller
authenticateIncomingMsg ( byte authKey, byte authenticationParameters, MutableByte wholeMessage ) : bool	Verify MD5 authentication of a packet.
authenticateIncomingMsg ( byte userPassword, byte engineId, byte authenticationParameters, MutableByte wholeMessage ) : bool	Verifies correct MD5 authentication of the frame. Prior to calling this method, you have to extract authentication parameters from the wholeMessage and reset authenticationParameters field in the USM information block to 12 0x00 values.

Method Details

AuthenticationMD5() public method

Standard constructor

public AuthenticationMD5 ( ) : System
return	System

ComputeHash() public method

Compute hash using authentication protocol.

public ComputeHash ( byte data, int offset, int count ) : byte[]
data	byte	Data to hash
offset	int	Compute hash from the source buffer offset
count	int	Compute hash for source data length
return	byte[]

PasswordToKey() public method

Convert user password to acceptable authentication key.

Thrown when key length is less then 8 bytes

public PasswordToKey ( byte userPassword, byte engineID ) : byte[]
userPassword	byte	Authentication password
engineID	byte	Authoritative engine id
return	byte[]

authenticate() public method

Authenticate packet and return authentication parameters value to the caller

public authenticate ( byte authKey, byte wholeMessage ) : byte[]
authKey	byte	Pre-generated authentication key
wholeMessage	byte	Message being authenticated
return	byte[]

authenticate() public method

Authenticate packet and return authentication parameters value to the caller

public authenticate ( byte authenticationSecret, byte engineId, byte wholeMessage ) : byte[]
authenticationSecret	byte	User authentication secret
engineId	byte	SNMP agent authoritative engine id
wholeMessage	byte	Message to authenticate
return	byte[]

authenticateIncomingMsg() public method

Verify MD5 authentication of a packet.

public authenticateIncomingMsg ( byte authKey, byte authenticationParameters, MutableByte wholeMessage ) : bool
authKey	byte	Authentication key (not password)
authenticationParameters	byte	Authentication parameters extracted from the packet being authenticated
wholeMessage	MutableByte	Entire packet being authenticated
return	bool

authenticateIncomingMsg() public method

Verifies correct MD5 authentication of the frame. Prior to calling this method, you have to extract authentication parameters from the wholeMessage and reset authenticationParameters field in the USM information block to 12 0x00 values.

public authenticateIncomingMsg ( byte userPassword, byte engineId, byte authenticationParameters, MutableByte wholeMessage ) : bool
userPassword	byte	User password
engineId	byte	Authoritative engine id
authenticationParameters	byte	Extracted USM authentication parameters
wholeMessage	MutableByte	Whole message with authentication parameters zeroed (0x00) out
return	bool