RC5ParameterSpec
open class RC5ParameterSpec : AlgorithmParameterSpec
kotlin.Any | |
↳ | 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 Security Inc., or any parties authorized by RSA Security.
Summary
Public constructors | |
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RC5ParameterSpec(version: Int, rounds: Int, wordSize: Int) Constructs a parameter set for RC5 from the given version, number of rounds and word size (in bits). |
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RC5ParameterSpec(version: Int, rounds: Int, wordSize: Int, iv: ByteArray!) Constructs a parameter set for RC5 from the given version, number of rounds, word size (in bits), and IV. |
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Constructs a parameter set for RC5 from the given version, number of rounds, word size (in bits), and IV. |
Public methods | |
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open Boolean |
Tests for equality between the specified object and this object. |
open ByteArray! |
getIV() Returns the IV or null if this parameter set does not contain an IV. |
open Int |
Returns the number of rounds. |
open Int |
Returns the version. |
open Int |
Returns the word size in bits. |
open Int |
hashCode() Calculates a hash code value for the object. |
Public constructors
RC5ParameterSpec
RC5ParameterSpec(
version: Int,
rounds: Int,
wordSize: Int)
Constructs a parameter set for RC5 from the given version, number of rounds and word size (in bits).
Parameters | |
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version |
Int: the version. |
rounds |
Int: the number of rounds. |
wordSize |
Int: the word size in bits. |
RC5ParameterSpec
RC5ParameterSpec(
version: Int,
rounds: Int,
wordSize: Int,
iv: ByteArray!)
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. The bytes that constitute the IV are those between iv[0]
and iv[2*(wordSize/8)-1]
inclusive.
Parameters | |
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version |
Int: the version. |
rounds |
Int: the number of rounds. |
wordSize |
Int: the word size in bits. |
iv |
ByteArray!: the buffer with the IV. The first 2*(wordSize/8) bytes of the buffer are copied to protect against subsequent modification. |
Exceptions | |
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java.lang.IllegalArgumentException |
if iv is null or (iv.length < 2 * (wordSize / 8)) |
RC5ParameterSpec
RC5ParameterSpec(
version: Int,
rounds: Int,
wordSize: Int,
iv: ByteArray!,
offset: Int)
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
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.
Parameters | |
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version |
Int: the version. |
rounds |
Int: the number of rounds. |
wordSize |
Int: the word size in bits. |
iv |
ByteArray!: the buffer with the IV. The first 2*(wordSize/8) bytes of the buffer beginning at offset inclusive are copied to protect against subsequent modification. |
offset |
Int: the offset in iv where the IV starts. |
Exceptions | |
---|---|
java.lang.IllegalArgumentException |
if iv is null or (iv.length - offset < 2 * (wordSize / 8)) |
Public methods
equals
open fun equals(other: Any?): Boolean
Tests for equality between the specified object and this object. Two RC5ParameterSpec objects are considered equal if their version numbers, number of rounds, word sizes, and IVs are equal. (Two IV references are considered equal if both are null.)
Parameters | |
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obj |
the object to test for equality with this object. |
Return | |
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Boolean |
true if the objects are considered equal, false if obj is null or otherwise. |
getIV
open fun getIV(): ByteArray!
Returns the IV or null if this parameter set does not contain an IV.
Return | |
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ByteArray! |
the IV or null if this parameter set does not contain an IV. Returns a new array each time this method is called. |
getRounds
open fun getRounds(): Int
Returns the number of rounds.
Return | |
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Int |
the number of rounds. |
getVersion
open fun getVersion(): Int
Returns the version.
Return | |
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Int |
the version. |
getWordSize
open fun getWordSize(): Int
Returns the word size in bits.
Return | |
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Int |
the word size in bits. |
hashCode
open fun hashCode(): Int
Calculates a hash code value for the object. Objects that are equal will also have the same hashcode.
Return | |
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Int |
a hash code value for this object. |