Struct SymmetricKey 

pub struct SymmetricKey(/* private fields */);

A symmetric key for local token encryption/decryption

Implementations

impl SymmetricKey

pub fn generate<R: CryptoRng + RngCore>(rng: &mut R) -> Self

Generate a new random symmetric key

pub fn from_bytes(bytes: &[u8]) -> Result<Self, PqPasetoError>

Create symmetric key from bytes

pub fn to_bytes(&self) -> [u8; 32]

Export symmetric key as bytes

pub fn derive_from_shared_secret(shared_secret: &[u8], info: &[u8]) -> Self

Derive a symmetric key from shared secret using proper HKDF-SHA256

Uses RFC 5869 HKDF with SHA-256 for cryptographically sound key derivation. The salt is set to None for domain separation, following best practices for post-quantum key exchange scenarios.

Trait Implementations

impl Clone for SymmetricKey

fn clone(&self) -> SymmetricKey

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SymmetricKey

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Drop for SymmetricKey

fn drop(&mut self)

Executes the destructor for this type.

impl Zeroize for SymmetricKey

fn zeroize(&mut self)

Zero out this object from memory using Rust intrinsics which ensure the zeroization operation is not “optimized away” by the compiler.