Enum RandomError 

pub enum RandomError {
    GenerationFailed,
    SeedingFailed(SysError),
    SeedRejected,
}

Variants

GenerationFailed

SeedingFailed(SysError)

SeedRejected

The seed produced an unusable batch of randomness (e.g. colliding sort keys during oblivious permutation generation). The seed must be discarded and a fresh one generated; retrying from the same seed’s RNG stream would leak a predicate of the retained seed through timing and can never yield a stable derivation for it.

For a generator seeded from the OS rather than from a retained seed (SafeRand::from_entropy) there is no seed to keep: build a new generator with from_entropy and call again. What must not happen is a second draw from the same generator.

Trait Implementations

impl Debug for RandomError

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

Formats the value using the given formatter.

impl Display for RandomError

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

Formats the value using the given formatter.

impl Error for RandomError

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<Error> for RandomError

fn from(source: SysError) -> Self

Converts to this type from the input type.