Enum Error 

#[non_exhaustive]
pub enum Error {
    InvalidKeyLength,
    InvalidNonceLength,
    Encrypt,
    Decrypt,
    CiphertextTooShort,
    UnsupportedCpu,
    KeyStateStorageTooSmall,
    KeyStateStorageMisaligned,
    InputTooLarge,
    OutputTooSmall,
    OsEntropy,
}

Error type for the candidate AES-256-GCM API.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

InvalidKeyLength

The provided key is not exactly 32 bytes.

InvalidNonceLength

The provided nonce is not exactly 12 bytes.

Encrypt

Encryption failed.

Decrypt

Decryption or authentication failed.

CiphertextTooShort

The nonce-appended ciphertext layout is too short to contain tag plus nonce.

UnsupportedCpu

Required AES/GHASH hardware support is unavailable.

KeyStateStorageTooSmall

Caller-provided key-state storage is too small.

KeyStateStorageMisaligned

Caller-provided key-state storage does not satisfy alignment.

InputTooLarge

Input is too large for AES-GCM’s counter or GHASH length limits.

OutputTooSmall

Caller-provided output buffer is too small for the plaintext.

OsEntropy

The OS entropy source failed while generating a nonce.

Trait Implementations

impl Clone for Error

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Error

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Eq for Error

impl Error for Error

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl PartialEq for Error

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Error