Struct Aes256GcmCipher 

pub struct Aes256GcmCipher { /* private fields */ }

AES-256-GCM cipher implementation.

Provides authenticated encryption with associated data (AEAD).

• Key size: 256 bits (32 bytes)
• Nonce size: 96 bits (12 bytes)
• Tag size: 128 bits (16 bytes)

Ciphertext Format

[nonce: 12 bytes][ciphertext + tag: variable]

Implementations

impl Aes256GcmCipher

pub const KEY_SIZE: usize = 32

Key size in bytes (256 bits).

pub const NONCE_SIZE: usize = 12

Nonce size in bytes (96 bits).

pub const TAG_SIZE: usize = 16

Authentication tag size in bytes (128 bits).

pub fn new(key: &EncryptionKey) -> CryptoResult<Self>

Create a new AES-256-GCM cipher with the given key.

Trait Implementations

impl Cipher for Aes256GcmCipher

Available on crate feature aes only.

fn encrypt( &self, plaintext: &[u8], associated_data: Option<&[u8]>, ) -> CryptoResult<Vec<u8>>

Encrypt plaintext with optional associated data.

fn decrypt( &self, ciphertext: &[u8], associated_data: Option<&[u8]>, ) -> CryptoResult<Vec<u8>>

Decrypt ciphertext with optional associated data.

fn algorithm(&self) -> &'static str

Get the cipher algorithm name.

fn key_size(&self) -> usize

Get the key size in bytes.

fn nonce_size(&self) -> usize

Get the nonce size in bytes.

fn tag_size(&self) -> usize

Get the authentication tag size in bytes.