IvParameterSpec (Java SE 15 & JDK 15) (original) (raw)

All Implemented Interfaces:

[AlgorithmParameterSpec](../../../java/security/spec/AlgorithmParameterSpec.html "interface in java.security.spec")

public class IvParameterSpec extends Object implements AlgorithmParameterSpec

This class specifies an initialization vector (IV). Examples which use IVs are ciphers in feedback mode, e.g., DES in CBC mode and RSA ciphers with OAEP encoding operation.

Since:

1.4

• Constructor Summary

Constructors

• Method Summary

Methods declared in class java.lang.Object

[clone](../../../java/lang/Object.html#clone%28%29), [equals](../../../java/lang/Object.html#equals%28java.lang.Object%29), [finalize](../../../java/lang/Object.html#finalize%28%29), [getClass](../../../java/lang/Object.html#getClass%28%29), [hashCode](../../../java/lang/Object.html#hashCode%28%29), [notify](../../../java/lang/Object.html#notify%28%29), [notifyAll](../../../java/lang/Object.html#notifyAll%28%29), [toString](../../../java/lang/Object.html#toString%28%29), [wait](../../../java/lang/Object.html#wait%28%29), [wait](../../../java/lang/Object.html#wait%28long%29), [wait](../../../java/lang/Object.html#wait%28long,int%29)

• Constructor Details

  • IvParameterSpec

  public IvParameterSpec​(byte[] iv)
  Creates an IvParameterSpec object using the bytes in iv as the IV.
  Parameters:
  iv - the buffer with the IV. The contents of the buffer are copied to protect against subsequent modification.
  Throws:
  [NullPointerException](../../../java/lang/NullPointerException.html "class in java.lang") - if iv is null

  • IvParameterSpec

  public IvParameterSpec​(byte[] iv, int offset, int len)
  Creates an IvParameterSpec object using the first len bytes in iv, beginning at offset inclusive, as the IV.
  The bytes that constitute the IV are those betweeniv[offset] and iv[offset+len-1] inclusive.
  Parameters:
  iv - the buffer with the IV. The first len bytes of the buffer beginning at offset inclusive are copied to protect against subsequent modification.
  offset - the offset in iv where the IV starts.
  len - the number of IV bytes.
  Throws:
  [IllegalArgumentException](../../../java/lang/IllegalArgumentException.html "class in java.lang") - if iv is null or (iv.length - offset < len)
[ArrayIndexOutOfBoundsException](../../../java/lang/ArrayIndexOutOfBoundsException.html "class in java.lang") - is thrown if offset or len index bytes outside the iv.

• Method Details

  • getIV

  public byte[] getIV()
  Returns the initialization vector (IV).
  Returns:
  the initialization vector (IV). Returns a new array each time this method is called.