ChaCha20Cipher class

ChaCha20 symmetric cipher implementation. Extends SymmetricCipher and provides ChaCha20 encryption/decryption.

Inheritance
Annotations
  • @includeInBarrelFile

Constructors

ChaCha20Cipher(InputChaCha20Cipher input)
Constructs a ChaCha20Cipher with the given input parameters.

Properties

algorithm → CryptoAlgorithm
The cryptographic algorithm associated with this object.
no setteroverride
expirationDate → DateTime?
The expiration date, or null if not set.
no setterinherited
expirationTimes → int?
Maximum number of allowed usages before expiration.
no setterinherited
expirationTimesRemaining → int?
Remaining number of allowed usages.
no setterinherited
hashCode → int
The hash code for this object.
no setterinherited
key → String
The symmetric key as a string.
no setterinherited
keyId → Digest
Returns the SHA-256 hash of the key material as a hex string.
no setterinherited
nonce → Uint8List
Nonce used for ChaCha20 encryption/decryption.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

decrypt(List<int> data) → List<int>
Decrypts data using ChaCha20.
override
encrypt(List<int> data) → List<int>
Encrypts data using ChaCha20.
override
incrementUse() → void
Increments the usage counter for expiration times.
inherited
isExpired() → bool
Returns true if the object is expired.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited

Operators

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

Static Methods

createFull(InputChaCha20Cipher input) → ChaCha20Cipher
Creates a ChaCha20Cipher with full control over all parameters.
generateKey() → String
Generates a random 256-bit ChaCha20 key as a hex string.
override
generateNonce() → Uint8List
Generates a random 64-bit nonce for ChaCha20.