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Class javax.crypto.spec.RC5ParameterSpec
java.lang.Object
|
+----javax.crypto.spec.RC5ParameterSpec
- public class RC5ParameterSpec
- extends Object
- implements AlgorithmParameterSpec
This class specifies the parameters used with the RC5 algorithm.
The parameters consist of a version number, a rounds count, a word size, and
optionally an initialisation vector (IV) (only in feedback mode).
This class can be used to initialise a Cipher object that implements the RC5
algorithm as supplied by RSA Data Security, Inc., or parties authorised by
RSA Data Security.
-
RC5ParameterSpec(int, int, int)
- Constructs a parameter set for RC5 from the given version, number of
rounds and word size (in bits).
-
RC5ParameterSpec(int, int, int, byte[])
- Constructs a parameter set for RC5 from the given version, number of
rounds, word size (in bits), and IV.
-
RC5ParameterSpec(int, int, int, byte[], int)
- Constructs a parameter set for RC5 from the given version, number of
rounds, word size (in bits), and IV.
-
getIV()
- Returns the IV or null if this parameter set does not contain an IV.
-
getRounds()
- Returns the number of rounds.
-
getVersion()
- Returns the version.
-
getWordSize()
- Returns the word size in bits.
RC5ParameterSpec
public RC5ParameterSpec(int version,
int rounds,
int wordSize)
- Constructs a parameter set for RC5 from the given version, number of
rounds and word size (in bits).
- Parameters:
- version - the version.
- rounds - the number of rounds.
- wordSize - the word size in bits.
RC5ParameterSpec
public RC5ParameterSpec(int version,
int rounds,
int wordSize,
byte iv[])
- Constructs a parameter set for RC5 from the given version, number of
rounds, word size (in bits), and IV. Note that the size of the IV
(block size) must be twice the word size.
- Parameters:
- version - the version.
- rounds - the number of rounds.
- wordSize - the word size in bits.
- iv - the buffer with the IV.
RC5ParameterSpec
public RC5ParameterSpec(int version,
int rounds,
int wordSize,
byte iv[],
int offset)
- Constructs a parameter set for RC5 from the given version, number of
rounds, word size (in bits), and IV. The IV is taken from iv,
starting at offset. Note that the size of the IV (block size),
starting at offset, must be twice the word size.
- Parameters:
- version - the version.
- rounds - the number of rounds.
- wordSize - the word size in bits.
- iv - the buffer with the IV.
- offset - the offset in iv where the IV starts.
getVersion
public int getVersion()
- Returns the version.
- Returns:
- the version.
getRounds
public int getRounds()
- Returns the number of rounds.
- Returns:
- the number of rounds.
getWordSize
public int getWordSize()
- Returns the word size in bits.
- Returns:
- the word size in bits.
getIV
public byte[] getIV()
- Returns the IV or null if this parameter set does not contain an IV.
- Returns:
- the IV or null if this parameter set does not contain an IV.
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