java.lang.Object javax.crypto.spec.RC5ParameterSpec
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 initialization vector (IV) (only in feedback mode).
This class can be used to initialize a Cipher object that implements the RC5 algorithm as supplied by RSA Data Security, Inc. (RSA DSI), or any parties authorized by RSA DSI.
Constructor Summary | |
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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). |
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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. |
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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. |
Method Summary | |
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boolean |
equals
(
Object
obj) Tests for equality between the specified object and this object. |
byte[] |
getIV
() Returns the IV or null if this parameter set does not contain an IV. |
int |
getRounds
() Returns the number of rounds. |
int |
getVersion
() Returns the version. |
int |
getWordSize
() Returns the word size in bits. |
int |
hashCode
() Calculates a hash code value for the object. |
Methods inherited from class java.lang. Object |
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clone , finalize , getClass , notify , notifyAll , toString , wait , wait , wait |
Constructor Detail |
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public RC5ParameterSpec(int version, int rounds, int wordSize)
public RC5ParameterSpec(int version, int rounds, int wordSize, byte[] iv)
Note that the size of the IV (block size) must be twice the word size. The bytes that constitute the IV are those between iv[0] and iv[2*(wordSize/8)-1] inclusive.
public RC5ParameterSpec(int version, int rounds, int wordSize, byte[] iv, int offset)
The IV is taken from iv, starting at offset inclusive. Note that the size of the IV (block size), starting at offset inclusive, must be twice the word size. The bytes that constitute the IV are those between iv[offset] and iv[offset+2*(wordSize/8)-1] inclusive.
Method Detail |
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public int getVersion()
public int getRounds()
public int getWordSize()
public byte[] getIV()
public boolean equals(Object obj)
public int hashCode()