ChaCha20Poly1305 class

ChaCha20-Poly1305 is a cryptographic algorithm combining ChaCha20 stream cipher for encryption and Poly1305 for generating message authentication code. It provides both confidentiality and integrity protection, making it a popular choice for secure communication protocols like TLS.

This implementation is based on the RFC-8439

Inheritance
Mixed-in types

Constructors

ChaCha20Poly1305.new(List<int> key, {List<int>? nonce, Nonce64? counter, List<int>? aad})
Creates a new instance of the ChaCha20Poly1305 cipher.
factory

Properties

aad → List<int>?
Additional authenticated data (optional)
finalinherited
cipher → ChaCha20
The cipher used by this AEAD construction
finalinherited
hashCode → int
The hash code for this object.
no setterinherited
iv → Uint8List
The salt or initialization vector
no setteroverride
mac → Poly1305
The MAC generator used by this AEAD construction
finalinherited
name → String
The name of the algorithm
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

bind(Stream<List<int>> stream, [dynamic onDigest(HashDigest tag)?, bool verifyMode = false]) → Stream<Uint8List>
Transforms the chunked stream
inherited
cast<RS, RT>() → StreamTransformer<RS, RT>
Provides a StreamTransformer<RS, RT> view of this stream transformer.
inherited
convert(List<int> message, [bool verifyMode = false]) → Uint8List
Transforms the message. Alias for sign.
inherited
createSink([bool verifyMode = false]) → AEADCipherSink<CipherSink, HashDigestSink>
Creates a sink to process multiple input messages in chunks
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
resetIV() → void
Replaces current IV with a new random one
override
sign(List<int> message) → AEADResultWithIV
Signs the message with an authentication tag.
override
stream(Stream<int> stream, [dynamic onDigest(HashDigest tag)?, bool verifyMode = false]) → Stream<int>
Transforms the stream
inherited
toString() → String
A string representation of this object.
inherited
verify(List<int> message, List<int> tag) → bool
Returns true if message can be verified with the authentication tag.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited