Nip17FileCrypto class

NIP-17 interoperable AES-GCM file encryption.

Sending follows the convention used by Amethyst: AES-256-GCM, a fresh 16-byte nonce, lowercase hex key/nonce tags, and a blob containing ciphertext followed by the 16-byte authentication tag. Decryption also accepts base64url parameters and 12-byte nonces used by older clients.

Constructors

Nip17FileCrypto()

Properties

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

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

decrypt({required Uint8List ciphertext, required Nip17FileMetadata metadata}) → Future<Uint8List>

Verifies the encrypted hash before AES-GCM authentication and verifies the original hash after decryption.

encrypt(Uint8List plaintext) → Future<Nip17EncryptedFile>

tryDecodeParameter(String value, {Set<int>? allowedLengths}) → Uint8List?