Package com.southernstorm.noise.protocol
Class Noise
java.lang.Object
com.southernstorm.noise.protocol.Noise
Utility functions for the Noise protocol library.
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Field Summary
Modifier and TypeFieldDescriptionstatic final int
Maximum length for Noise packets. -
Constructor Summary
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Method Summary
Modifier and TypeMethodDescription(package private) static byte[]
copySubArray
(byte[] data, int offset, int length) Makes a copy of part of an array.static CipherState
createCipher
(String name) Creates a cipher object from its Noise protocol name.static MessageDigest
createHash
(String name) Creates a hash object from its Noise protocol name.(package private) static void
destroy
(byte[] array) Destroys the contents of a byte array.(package private) static void
Throws an instance of AEADBadTagException.
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Field Details
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MAX_PACKET_LEN
public static final int MAX_PACKET_LENMaximum length for Noise packets.- See Also:
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Constructor Details
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Noise
public Noise()
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Method Details
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createCipher
Creates a cipher object from its Noise protocol name.- Parameters:
name
- The name of the cipher algorithm; e.g. "AESGCM", "ChaChaPoly", etc.- Returns:
- The cipher object if the name is recognized.
- Throws:
NoSuchAlgorithmException
- The name is not recognized as a valid Noise protocol name, or there is no cryptography provider in the system that implements the algorithm.
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createHash
Creates a hash object from its Noise protocol name.- Parameters:
name
- The name of the hash algorithm; e.g. "SHA256", "BLAKE2s", etc.- Returns:
- The hash object if the name is recognized.
- Throws:
NoSuchAlgorithmException
- The name is not recognized as a valid Noise protocol name, or there is no cryptography provider in the system that implements the algorithm.
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destroy
static void destroy(byte[] array) Destroys the contents of a byte array.- Parameters:
array
- The array whose contents should be destroyed.
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copySubArray
static byte[] copySubArray(byte[] data, int offset, int length) Makes a copy of part of an array.- Parameters:
data
- The buffer containing the data to copy.offset
- Offset of the first byte to copy.length
- The number of bytes to copy.- Returns:
- A new array with a copy of the sub-array.
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throwBadTagException
Throws an instance of AEADBadTagException.- Throws:
BadPaddingException
- The AEAD exception. If the underlying JDK does not have the AEADBadTagException class, then this function will instead throw an instance of the superclass BadPaddingException.
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