- java.lang.Object
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- javax.crypto.spec.ChaCha20ParameterSpec
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- All Implemented Interfaces:
AlgorithmParameterSpec
public final class ChaCha20ParameterSpec extends Object implements AlgorithmParameterSpec
This class specifies the parameters used with the ChaCha20 algorithm.The parameters consist of a 12-byte nonce and an initial counter value expressed as a 32-bit integer.
This class can be used to initialize a
Cipherobject that implements the ChaCha20 algorithm.- Since:
- 11
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Constructor Summary
Constructors Constructor Description ChaCha20ParameterSpec(byte[] nonce, int counter)Constructs a parameter set for ChaCha20 from the given nonce and counter.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description intgetCounter()Returns the configured counter value.byte[]getNonce()Returns the nonce value.
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Constructor Detail
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ChaCha20ParameterSpec
public ChaCha20ParameterSpec(byte[] nonce, int counter)Constructs a parameter set for ChaCha20 from the given nonce and counter.- Parameters:
nonce- a 12-byte nonce valuecounter- the initial counter value- Throws:
NullPointerException- ifnonceisnullIllegalArgumentException- ifnonceis not 12 bytes in length
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