com.adventnet.snmp.snmp2.usm
Class USMSecurityCryptix32

java.lang.Object
  |
  +--com.adventnet.snmp.snmp2.usm.USMSecurity
        |
        +--com.adventnet.snmp.snmp2.usm.USMSecurityCryptix32

class USMSecurityCryptix32

extends USMSecurity

Constructor Summary

(package private)

USMSecurityCryptix32() The Default Constructor.

Method Summary

(package private) byte[]	decrypt(byte[] data, int offset, byte[] key, byte[] privParams, int privProtocol, int engineBoots, int engineTime) This method is used for decrypting the data from the offset position till data's end.
(package private) int	encrypt(byte[] data, int offset, byte[] key, byte[] privParams, int privProtocol, int engineBoots, int engineTime) This method is used for encrypting the data from the offset position till data's end.

Methods inherited from class java.lang.Object

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

Constructor Detail

USMSecurityCryptix32

USMSecurityCryptix32()

The Default Constructor.

Method Detail

encrypt

int encrypt(byte[] data,
            int offset,
            byte[] key,
            byte[] privParams,
            int privProtocol,
            int engineBoots,
            int engineTime)
      throws SnmpException

Description copied from class: USMSecurity

This method is used for encrypting the data from the offset position till data's end. The encrypted data will be filled in data. As per the standard draft-blumenthal-aes-usm-08.txt, the engine boots and engine time values should be used for calculating the salt. Hence both these values are passed as an argument.

Overrides:

encrypt in class USMSecurity

Tags copied from class: USMSecurity

Parameters:

data - the byte array which contains the data to be encrypted.

offset - the position from which data should be encrypted.

key - the privKey which is calculated from the privPassword.

privParams - the privParams which is present in the SNMPv3 auth-priv data.

privProtocol - the privacy protocol for this user. supported privacy protocols are CBC-DES and CFB-AES-128.

engineBoots - the engineBoots value associated with the snmp engine.

engineTime - the engineTime value associated with the snmp engine.

Returns:

The location from where this encrypted data has been filled inside data.

decrypt

byte[] decrypt(byte[] data,
               int offset,
               byte[] key,
               byte[] privParams,
               int privProtocol,
               int engineBoots,
               int engineTime)

Description copied from class: USMSecurity

This method is used for decrypting the data from the offset position till data's end. As per the standard draft-blumenthal-aes-usm-08.txt, the engine boots and engine time values should be used for calculating the salt. Hence both these values are passed as an argument.

Overrides:

decrypt in class USMSecurity

Tags copied from class: USMSecurity

Parameters:

data - the byte array which contains the data to be decrypted.

offset - the position from which data should be decrypted.

key - the privKey which is calculated from the privPassword.

privParams - the privParams which is present in the SNMPv3 auth-priv data.

privProtocol - the privacy protocol for this user. supported privacy protocols are CBC-DES and CFB-AES-128.

engineBoots - the engineBoots value associated with the snmp engine.

engineTime - the engineTime value associated with the snmp engine.

Returns:

the decrypted data as a byte array. This method will return null if any decryption error occurs.