Package org.apache.sshd.common.cipher
Class CipherNone
- java.lang.Object
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- org.apache.sshd.common.cipher.CipherNone
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- All Implemented Interfaces:
AlgorithmNameProvider
,Cipher
,CipherInformation
,KeySizeIndicator
public class CipherNone extends java.lang.Object implements Cipher
Represents a no-op cipher. This cipher can not really be used during authentication and should only be used after, so that authentication remains secured, but not the remaining of the exchanges.
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Nested Class Summary
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Nested classes/interfaces inherited from interface org.apache.sshd.common.cipher.Cipher
Cipher.Mode
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Constructor Summary
Constructors Constructor Description CipherNone()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.String
getAlgorithm()
int
getAuthenticationTagSize()
int
getCipherBlockSize()
int
getIVSize()
int
getKdfSize()
int
getKeySize()
java.lang.String
getTransformation()
void
init(Cipher.Mode mode, byte[] key, byte[] iv)
Initialize the cipher for encryption or decryption with the given key and initialization vectorvoid
update(byte[] input, int inputOffset, int inputLen)
Performs in-place encryption or decryption on the given data.void
updateAAD(byte[] data, int offset, int length)
Adds the provided input data as additional authenticated data during encryption or decryption.-
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.apache.sshd.common.cipher.Cipher
update, updateAAD, updateWithAAD
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Method Detail
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getAlgorithm
public java.lang.String getAlgorithm()
- Specified by:
getAlgorithm
in interfaceAlgorithmNameProvider
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getKeySize
public int getKeySize()
- Specified by:
getKeySize
in interfaceKeySizeIndicator
- Returns:
- The number of bits used in the key
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getTransformation
public java.lang.String getTransformation()
- Specified by:
getTransformation
in interfaceCipherInformation
- Returns:
- The actual transformation used - e.g., AES/CBC/NoPadding
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getIVSize
public int getIVSize()
- Specified by:
getIVSize
in interfaceCipherInformation
- Returns:
- Size of the initialization vector (in bytes)
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getAuthenticationTagSize
public int getAuthenticationTagSize()
- Specified by:
getAuthenticationTagSize
in interfaceCipherInformation
- Returns:
- Size of the authentication tag (AT) in bytes or 0 if this cipher does not support authentication
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getKdfSize
public int getKdfSize()
- Specified by:
getKdfSize
in interfaceCipherInformation
- Returns:
- The block size (in bytes) used to derive the secret key for this cipher
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getCipherBlockSize
public int getCipherBlockSize()
- Specified by:
getCipherBlockSize
in interfaceCipherInformation
- Returns:
- Size of block data used by the cipher (in bytes). For stream ciphers this value is (currently) used to indicate some average work buffer size to be used for the automatic re-keying mechanism described in RFC 4253 - Section 9
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init
public void init(Cipher.Mode mode, byte[] key, byte[] iv) throws java.lang.Exception
Description copied from interface:Cipher
Initialize the cipher for encryption or decryption with the given key and initialization vector
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updateAAD
public void updateAAD(byte[] data, int offset, int length) throws java.lang.Exception
Description copied from interface:Cipher
Adds the provided input data as additional authenticated data during encryption or decryption.
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update
public void update(byte[] input, int inputOffset, int inputLen) throws java.lang.Exception
Description copied from interface:Cipher
Performs in-place encryption or decryption on the given data.
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