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public interface PrivacyProtocol
The PrivacyProtocol
interface defines a common
interface for all SNMP privacy protocols.
Method Summary | |
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byte[] |
decrypt(byte[] cryptedData,
int offset,
int length,
byte[] decryptionKey,
long engineBoots,
long engineTime,
DecryptParams decryptParams)
Decrypts a message using a given decryption key, engine boots count, and engine ID. |
byte[] |
encrypt(byte[] unencryptedData,
int offset,
int length,
byte[] encryptionKey,
long engineBoots,
long engineTime,
DecryptParams decryptParams)
Encrypts a message using a given encryption key, engine boots count, and engine ID. |
byte[] |
extendShortKey(byte[] shortKey,
OctetString password,
byte[] engineID,
AuthenticationProtocol authProtocol)
Extend a localized key that is too short. |
int |
getDecryptParamsLength()
Gets the length of the decryption parameters used by this security protocol. |
int |
getEncryptedLength(int scopedPDULength)
Gets the length of a scoped PDU when encrypted with this security protocol. |
OID |
getID()
Gets the OID uniquely identifying the privacy protocol. |
int |
getMaxKeyLength()
Gets the maximum key size for this privacy protcol. |
int |
getMinKeyLength()
Gets the minimum key size for this privacy protcol. |
Method Detail |
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byte[] encrypt(byte[] unencryptedData, int offset, int length, byte[] encryptionKey, long engineBoots, long engineTime, DecryptParams decryptParams)
unencryptedData
- the unencrypted data. This byte array may contain leading and trailing
bytes that will not be encrypted.offset
- the offset into the unencryptedData
where to start
encryption.length
- the length of the substring starting at offset
to encrypt.encryptionKey
- the key to be used for encryption.engineBoots
- the engine boots counter to use.engineTime
- the engine time to use.decryptParams
- returns the decryption parameters needed to decrypt the data that
has been encrypted by this method.
unencryptedData
.byte[] decrypt(byte[] cryptedData, int offset, int length, byte[] decryptionKey, long engineBoots, long engineTime, DecryptParams decryptParams)
cryptedData
- the crypted data. This byte array may contain leading and trailing
bytes that will not be decrypted.offset
- the offset into the cryptedData
where to start
encryption.length
- the length of the substring starting at offset
to decrypt.decryptionKey
- the key to be used for decryption.engineBoots
- the engine boots counter to use.engineTime
- the engine time to use.decryptParams
- contains the decryption parameters.
null
if decryption failed.OID getID()
getID
in interface SecurityProtocol
OID
instance.int getEncryptedLength(int scopedPDULength)
scopedPDULength
- the length of the (unencrypted) scoped PDU.
int getMinKeyLength()
int getMaxKeyLength()
int getDecryptParamsLength()
byte[] extendShortKey(byte[] shortKey, OctetString password, byte[] engineID, AuthenticationProtocol authProtocol)
shortKey
- the short key that was generated using
AuthenticationProtocol.passwordToKey(org.snmp4j.smi.OctetString, byte[])
function.password
- the password to use for key extension.engineID
- the SNMP engine ID of the authoritative engine.authProtocol
- the authentication protocol that should be used.
shortKey
if no extension is needed.
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Copyright 2005-2010 Frank Fock (SNMP4J.org) | |||||||||
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