Enum Error 

#[non_exhaustive]
pub enum Error {
    KeyFormat,
    Decode,
    Decap,
    Unseal,
    Seal,
    Rng,
    Internal,
    UnsupportedVersion(u8),
    UnsupportedSuite,
    InfoExceedsSize,
    EmptyCiphertext,
}

Failure modes with encryption or keys

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.

KeyFormat

Provided key is malformed: bad encoding, checksum, HRP, or length.

Decode

The sealed message is too short or malformed.

Decap

KEM decapsulation failed.

Unseal

AEAD authentication failed: tampered ciphertext, wrong recipient, wrong info.

Seal

Sealing the message failed.

Rng

The operating system CSPRNG is unavailable, so no secure randomness could be drawn.

Internal

An HPKE state that this construction never produces. Critical library bug.

UnsupportedVersion(u8)

The provided ciphertext contains an invalid or unsupported version.

UnsupportedSuite

The provided ciphertext specifies an unsupported cryptographic suite.

InfoExceedsSize

The provided info exceeds the max size

EmptyCiphertext

The provided ciphertext is empty

Trait Implementations

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, __formatter: &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 From<HpkeError> for Error

fn from(e: HpkeError) -> Self

Converts to this type from the input type.

impl PartialEq for Error

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Error