- java.lang.Object
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- javax.crypto.spec.IvParameterSpec
 
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- All Implemented Interfaces:
- AlgorithmParameterSpec
 
 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
 
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Constructor SummaryConstructors Constructor Description IvParameterSpec(byte[] iv)Creates an IvParameterSpec object using the bytes inivas the IV.IvParameterSpec(byte[] iv, int offset, int len)Creates an IvParameterSpec object using the firstlenbytes iniv, beginning atoffsetinclusive, as the IV.
 
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Constructor Detail- 
IvParameterSpecpublic IvParameterSpec(byte[] iv) Creates an IvParameterSpec object using the bytes inivas the IV.- Parameters:
- iv- the buffer with the IV. The contents of the buffer are copied to protect against subsequent modification.
- Throws:
- NullPointerException- if- ivis- null
 
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IvParameterSpecpublic IvParameterSpec(byte[] iv, int offset, int len)Creates an IvParameterSpec object using the firstlenbytes iniv, beginning atoffsetinclusive, as the IV.The bytes that constitute the IV are those between iv[offset]andiv[offset+len-1]inclusive.- Parameters:
- iv- the buffer with the IV. The first- lenbytes of the buffer beginning at- offsetinclusive are copied to protect against subsequent modification.
- offset- the offset in- ivwhere the IV starts.
- len- the number of IV bytes.
- Throws:
- IllegalArgumentException- if- ivis- nullor- (iv.length - offset < len)
- ArrayIndexOutOfBoundsException- is thrown if- offsetor- lenindex bytes outside the- iv.
 
 
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