Enum diem_crypto::hkdf::HkdfError

pub enum HkdfError {
    InvalidOutputLengthError,
    WrongPseudorandomKeyError,
    MACKeyError,
    InvalidSeedLengthError,
}

An error type for HKDF key derivation issues.

This enum reflects there are various causes of HKDF failures, including: a) requested HKDF output size exceeds the maximum allowed or is zero. b) hash functions outputting less than 32 bits are not supported (i.e., SHA1 is not supported). c) small PRK value in HKDF-Expand according to RFC 5869. d) any other underlying HMAC error.

Variants

InvalidOutputLengthError

HKDF expand output exceeds the maximum allowed or is zero.

WrongPseudorandomKeyError

PRK on HKDF-Expand should not be less than the underlying hash output bits.

MACKeyError

HMAC key related error; unlikely to happen because every key size is accepted in HMAC.

InvalidSeedLengthError

HKDF extract input seed should not be less than the minimum accepted.

Trait Implementations

impl Clone for HkdfError

fn clone(&self) -> HkdfError

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for HkdfError

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

Formats the value using the given formatter.

impl Display for HkdfError

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

Formats the value using the given formatter.

impl Error for HkdfError

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

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, demand: &mut Demand<'a>)

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

Provides type based access to context intended for error reports.

impl PartialEq<HkdfError> for HkdfError

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for HkdfError

impl StructuralEq for HkdfError

impl StructuralPartialEq for HkdfError