pub struct CautiousRng;Expand description
An exceptionally cautious wrapper for rand_core::OsRng
Ordinarily, one trusts OsRng.
But we want Arti to run on a wide variety of platforms,
and the chances of a bogus OsRng increases the more places we run.
This Rng combines OsRng with several other entropy sources,
in an attempt to reduce the likelihood of creating compromised keys.1
This Rng is slower than OsRng.
§Panics
This rng will panic if OsRng fails;
but that’s the only sensible behavior for a cryptographic-heavy application like ours.
Who else remembers CVE-2008-0166? ↩
Trait Implementations§
Source§impl Default for CautiousRng
impl Default for CautiousRng
Source§fn default() -> CautiousRng
fn default() -> CautiousRng
Returns the “default value” for a type. Read more
Source§impl RngCore for CautiousRng
impl RngCore for CautiousRng
impl CryptoRng for CautiousRng
impl EntropicRng for CautiousRng
Auto Trait Implementations§
impl Freeze for CautiousRng
impl RefUnwindSafe for CautiousRng
impl Send for CautiousRng
impl Sync for CautiousRng
impl Unpin for CautiousRng
impl UnwindSafe for CautiousRng
Blanket Implementations§
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impl<'a, T, E> AsTaggedExplicit<'a, E> for Twhere
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impl<'a, T, E> AsTaggedImplicit<'a, E> for Twhere
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fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
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fn into_either(self, into_left: bool) -> Either<Self, Self>
Converts
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Converts self into a Right variant of Either<Self, Self>
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
Converts
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if into_left(&self) returns true.
Converts self into a Right variant of Either<Self, Self>
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impl<R> Rng for R
Source§fn random<T>(&mut self) -> Twhere
StandardUniform: Distribution<T>,
fn random<T>(&mut self) -> Twhere
StandardUniform: Distribution<T>,
Return a random value via the
StandardUniform distribution. Read moreSource§fn random_iter<T>(self) -> Iter<StandardUniform, Self, T>
fn random_iter<T>(self) -> Iter<StandardUniform, Self, T>
Source§fn random_range<T, R>(&mut self, range: R) -> Twhere
T: SampleUniform,
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fn random_range<T, R>(&mut self, range: R) -> Twhere
T: SampleUniform,
R: SampleRange<T>,
Generate a random value in the given range. Read more
Source§fn random_bool(&mut self, p: f64) -> bool
fn random_bool(&mut self, p: f64) -> bool
Return a bool with a probability
p of being true. Read moreSource§fn random_ratio(&mut self, numerator: u32, denominator: u32) -> bool
fn random_ratio(&mut self, numerator: u32, denominator: u32) -> bool
Return a bool with a probability of
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Source§fn sample_iter<T, D>(self, distr: D) -> Iter<D, Self, T>where
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Source§fn gen<T>(&mut self) -> Twhere
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fn gen<T>(&mut self) -> Twhere
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👎Deprecated since 0.9.0: Renamed to
random to avoid conflict with the new gen keyword in Rust 2024.Alias for
Rng::random.Source§fn gen_range<T, R>(&mut self, range: R) -> Twhere
T: SampleUniform,
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fn gen_range<T, R>(&mut self, range: R) -> Twhere
T: SampleUniform,
R: SampleRange<T>,
👎Deprecated since 0.9.0: Renamed to
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Source§fn gen_range_checked<T, R>(&mut self, range: R) -> Option<T>where
T: SampleUniform,
R: SampleRange<T>,
fn gen_range_checked<T, R>(&mut self, range: R) -> Option<T>where
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Generate a random value in the given range. Read more
Source§fn gen_range_infallible<T>(&mut self, range: RangeToInclusive<T>) -> Twhere
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T: GenRangeInfallible,
Generate a random value in the given upper-bounded-only range. Read more
Source§impl<R> TryRngCore for R
impl<R> TryRngCore for R
Source§type Error = Infallible
type Error = Infallible
The type returned in the event of a RNG error.
Source§fn try_next_u32(&mut self) -> Result<u32, <R as TryRngCore>::Error>
fn try_next_u32(&mut self) -> Result<u32, <R as TryRngCore>::Error>
Return the next random
u32.Source§fn try_next_u64(&mut self) -> Result<u64, <R as TryRngCore>::Error>
fn try_next_u64(&mut self) -> Result<u64, <R as TryRngCore>::Error>
Return the next random
u64.Source§fn try_fill_bytes(
&mut self,
dst: &mut [u8],
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fn try_fill_bytes( &mut self, dst: &mut [u8], ) -> Result<(), <R as TryRngCore>::Error>
Fill
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Wrap RNG with the
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