reth::network::config

Struct SecretKey

pub struct SecretKey(/* private fields */);
Expand description

Secret key - a 256-bit key used to create ECDSA and Taproot signatures.

This value should be generated using a cryptographically secure pseudorandom number generator.

§Side channel attacks

We have attempted to reduce the side channel attack surface by implementing a constant time eq method. For similar reasons we explicitly do not implement PartialOrd, Ord, or Hash on SecretKey. If you really want to order secrets keys then you can use AsRef to get at the underlying bytes and compare them - however this is almost certainly a bad idea.

§Serde support

Implements de/serialization with the serde feature enabled. We treat the byte value as a tuple of 32 u8s for non-human-readable formats. This representation is optimal for for some formats (e.g. bincode) however other formats may be less optimal (e.g. cbor).

§Examples

Basic usage:

use secp256k1::{rand, Secp256k1, SecretKey};

let secp = Secp256k1::new();
let secret_key = SecretKey::new(&mut rand::thread_rng());

Implementations§

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impl SecretKey

pub fn display_secret(&self) -> DisplaySecret

Formats the explicit byte value of the secret key kept inside the type as a little-endian hexadecimal string using the provided formatter.

This is the only method that outputs the actual secret key value, and, thus, should be used with extreme caution.

§Examples
use secp256k1::SecretKey;
let key = SecretKey::from_str("0000000000000000000000000000000000000000000000000000000000000001").unwrap();

// Normal debug hides value (`Display` is not implemented for `SecretKey`).
// E.g., `format!("{:?}", key)` prints "SecretKey(#2518682f7819fb2d)".

// Here we explicitly display the secret value:
assert_eq!(
    "0000000000000000000000000000000000000000000000000000000000000001",
    format!("{}", key.display_secret())
);
// Also, we can explicitly display with `Debug`:
assert_eq!(
    format!("{:?}", key.display_secret()),
    format!("DisplaySecret(\"{}\")", key.display_secret())
);
§

impl SecretKey

pub fn non_secure_erase(&mut self)

Attempts to erase the contents of the underlying array.

Note, however, that the compiler is allowed to freely copy or move the contents of this array to other places in memory. Preventing this behavior is very subtle. For more discussion on this, please see the documentation of the zeroize crate.

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impl SecretKey

pub fn new<R>(rng: &mut R) -> SecretKey
where R: Rng + ?Sized,

Available on crate feature rand only.

Generates a new random secret key.

§Examples
use secp256k1::{rand, SecretKey};
let secret_key = SecretKey::new(&mut rand::thread_rng());

pub fn from_slice(data: &[u8]) -> Result<SecretKey, Error>

Converts a SECRET_KEY_SIZE-byte slice to a secret key.

§Examples
use secp256k1::SecretKey;
let sk = SecretKey::from_slice(&[0xcd; 32]).expect("32 bytes, within curve order");

pub fn from_keypair(keypair: &Keypair) -> SecretKey

Creates a new secret key using data from BIP-340 [Keypair].

§Examples
use secp256k1::{rand, Secp256k1, SecretKey, Keypair};

let secp = Secp256k1::new();
let keypair = Keypair::new(&secp, &mut rand::thread_rng());
let secret_key = SecretKey::from_keypair(&keypair);

pub fn secret_bytes(&self) -> [u8; 32]

Returns the secret key as a byte value.

pub fn negate(self) -> SecretKey

Negates the secret key.

pub fn add_tweak(self, tweak: &Scalar) -> Result<SecretKey, Error>

Tweaks a SecretKey by adding tweak modulo the curve order.

§Errors

Returns an error if the resulting key would be invalid.

pub fn mul_tweak(self, tweak: &Scalar) -> Result<SecretKey, Error>

Tweaks a SecretKey by multiplying by tweak modulo the curve order.

§Errors

Returns an error if the resulting key would be invalid.

pub fn sign_ecdsa(&self, msg: Message) -> Signature

Available on crate feature global-context only.

Constructs an ECDSA signature for msg using the global [SECP256K1] context.

pub fn keypair<C>(&self, secp: &Secp256k1<C>) -> Keypair
where C: Signing,

Returns the [Keypair] for this SecretKey.

This is equivalent to using [Keypair::from_secret_key].

pub fn public_key<C>(&self, secp: &Secp256k1<C>) -> PublicKey
where C: Signing,

Returns the [PublicKey] for this SecretKey.

This is equivalent to using [PublicKey::from_secret_key].

pub fn x_only_public_key<C>( &self, secp: &Secp256k1<C>, ) -> (XOnlyPublicKey, Parity)
where C: Signing,

Returns the [XOnlyPublicKey] (and it’s [Parity]) for this SecretKey.

This is equivalent to XOnlyPublicKey::from_keypair(self.keypair(secp)).

Trait Implementations§

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impl AsRef<[u8; 32]> for SecretKey

§

fn as_ref(&self) -> &[u8; 32]

Gets a reference to the underlying array.

§Side channel attacks

Using ordering functions (PartialOrd/Ord) on a reference to secret keys leaks data because the implementations are not constant time. Doing so will make your code vulnerable to side channel attacks. SecretKey::eq is implemented using a constant time algorithm, please consider using it to do comparisons of secret keys.

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impl CPtr for SecretKey

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type Target = u8

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fn as_c_ptr(&self) -> *const <SecretKey as CPtr>::Target

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fn as_mut_c_ptr(&mut self) -> *mut <SecretKey as CPtr>::Target

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impl Clone for SecretKey

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fn clone(&self) -> SecretKey

Returns a copy of the value. Read more
1.0.0 · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for SecretKey

Available on crate feature std only.
§

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

Formats the value using the given formatter. Read more
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impl<'de> Deserialize<'de> for SecretKey

Available on crate feature serde only.
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fn deserialize<D>(d: D) -> Result<SecretKey, <D as Deserializer<'de>>::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl EnrKey for SecretKey

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type PublicKey = PublicKey

§

fn sign_v4(&self, msg: &[u8]) -> Result<Vec<u8>, SigningError>

Performs ENR-specific signing for the v4 identity scheme.
§

fn public(&self) -> <SecretKey as EnrKey>::PublicKey

Returns the public key associated with current key pair.
§

fn enr_to_public( content: &BTreeMap<Vec<u8>, Bytes>, ) -> Result<<SecretKey as EnrKey>::PublicKey, Error>

Provides a method to decode a raw public key from an ENR BTreeMap to a useable public key. Read more
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impl EnrKeyUnambiguous for SecretKey

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fn decode_public( bytes: &[u8], ) -> Result<<SecretKey as EnrKey>::PublicKey, Error>

Decode raw bytes as corresponding public key.
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impl<'a> From<&'a Keypair> for SecretKey

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fn from(pair: &'a Keypair) -> SecretKey

Converts to this type from the input type.
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impl From<Keypair> for SecretKey

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fn from(pair: Keypair) -> SecretKey

Converts to this type from the input type.
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impl From<SecretKey> for Scalar

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fn from(value: SecretKey) -> Scalar

Converts to this type from the input type.
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impl FromStr for SecretKey

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type Err = Error

The associated error which can be returned from parsing.
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fn from_str(s: &str) -> Result<SecretKey, Error>

Parses a string s to return a value of this type. Read more
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impl<I> Index<I> for SecretKey
where [u8]: Index<I>,

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type Output = <[u8] as Index<I>>::Output

The returned type after indexing.
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fn index(&self, index: I) -> &<SecretKey as Index<I>>::Output

Performs the indexing (container[index]) operation. Read more
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impl PartialEq for SecretKey

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

This implementation is designed to be constant time to help prevent side channel attacks.

1.0.0 · Source§

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Serialize for SecretKey

Available on crate feature serde only.
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fn serialize<S>( &self, s: S, ) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error>
where S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl Copy for SecretKey

§

impl Eq for SecretKey

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🔬This is a nightly-only experimental API. (clone_to_uninit #126799)
Performs copy-assignment from self to dst. Read more
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Compare self to key and return true if they are equal.
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Checks if this value is equivalent to the given key. Read more
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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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where Self: AsRef<U>, U: 'a + ?Sized, R: 'a,

Borrows self, then passes self.as_ref() into the pipe function.
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fn pipe_as_mut<'a, U, R>(&'a mut self, func: impl FnOnce(&'a mut U) -> R) -> R
where Self: AsMut<U>, U: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.as_mut() into the pipe function.
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fn pipe_deref<'a, T, R>(&'a self, func: impl FnOnce(&'a T) -> R) -> R
where Self: Deref<Target = T>, T: 'a + ?Sized, R: 'a,

Borrows self, then passes self.deref() into the pipe function.
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fn pipe_deref_mut<'a, T, R>( &'a mut self, func: impl FnOnce(&'a mut T) -> R, ) -> R
where Self: DerefMut<Target = T> + Deref, T: 'a + ?Sized, R: 'a,

Mutably borrows self, then passes self.deref_mut() into the pipe function.
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impl<T> Pointable for T

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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> PolicyExt for T
where T: ?Sized,

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fn and<P, B, E>(self, other: P) -> And<T, P>
where T: Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns [Action::Follow] only if self and other return Action::Follow. Read more
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fn or<P, B, E>(self, other: P) -> Or<T, P>
where T: Policy<B, E>, P: Policy<B, E>,

Create a new Policy that returns [Action::Follow] if either self or other returns Action::Follow. Read more
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> Tap for T

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fn tap(self, func: impl FnOnce(&Self)) -> Self

Immutable access to a value. Read more
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fn tap_mut(self, func: impl FnOnce(&mut Self)) -> Self

Mutable access to a value. Read more
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fn tap_borrow<B>(self, func: impl FnOnce(&B)) -> Self
where Self: Borrow<B>, B: ?Sized,

Immutable access to the Borrow<B> of a value. Read more
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fn tap_borrow_mut<B>(self, func: impl FnOnce(&mut B)) -> Self
where Self: BorrowMut<B>, B: ?Sized,

Mutable access to the BorrowMut<B> of a value. Read more
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fn tap_ref<R>(self, func: impl FnOnce(&R)) -> Self
where Self: AsRef<R>, R: ?Sized,

Immutable access to the AsRef<R> view of a value. Read more
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fn tap_ref_mut<R>(self, func: impl FnOnce(&mut R)) -> Self
where Self: AsMut<R>, R: ?Sized,

Mutable access to the AsMut<R> view of a value. Read more
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fn tap_deref<T>(self, func: impl FnOnce(&T)) -> Self
where Self: Deref<Target = T>, T: ?Sized,

Immutable access to the Deref::Target of a value. Read more
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fn tap_deref_mut<T>(self, func: impl FnOnce(&mut T)) -> Self
where Self: DerefMut<Target = T> + Deref, T: ?Sized,

Mutable access to the Deref::Target of a value. Read more
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fn tap_dbg(self, func: impl FnOnce(&Self)) -> Self

Calls .tap() only in debug builds, and is erased in release builds.
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fn tap_mut_dbg(self, func: impl FnOnce(&mut Self)) -> Self

Calls .tap_mut() only in debug builds, and is erased in release builds.
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fn tap_borrow_dbg<B>(self, func: impl FnOnce(&B)) -> Self
where Self: Borrow<B>, B: ?Sized,

Calls .tap_borrow() only in debug builds, and is erased in release builds.
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fn tap_borrow_mut_dbg<B>(self, func: impl FnOnce(&mut B)) -> Self
where Self: BorrowMut<B>, B: ?Sized,

Calls .tap_borrow_mut() only in debug builds, and is erased in release builds.
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fn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Self
where Self: AsRef<R>, R: ?Sized,

Calls .tap_ref() only in debug builds, and is erased in release builds.
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fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Self
where Self: AsMut<R>, R: ?Sized,

Calls .tap_ref_mut() only in debug builds, and is erased in release builds.
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fn tap_deref_dbg<T>(self, func: impl FnOnce(&T)) -> Self
where Self: Deref<Target = T>, T: ?Sized,

Calls .tap_deref() only in debug builds, and is erased in release builds.
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fn tap_deref_mut_dbg<T>(self, func: impl FnOnce(&mut T)) -> Self
where Self: DerefMut<Target = T> + Deref, T: ?Sized,

Calls .tap_deref_mut() only in debug builds, and is erased in release builds.
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T> TryClone for T
where T: Clone,

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fn try_clone(&self) -> Result<T, Error>

Clones self, possibly returning an error.
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impl<T> TryConv for T

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fn try_conv<T>(self) -> Result<T, Self::Error>
where Self: TryInto<T>,

Attempts to convert self into T using TryInto<T>. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a [WithDispatch] wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a [WithDispatch] wrapper. Read more
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more
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impl<T> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,

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impl<T> ErasedDestructor for T
where T: 'static,

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impl<T> MaybeDebug for T
where T: Debug,

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impl<T> MaybeSend for T
where T: Send,

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impl<T> MaybeSendSync for T

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impl<T> MaybeSerde for T
where T: Serialize + for<'de> Deserialize<'de>,

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impl<T> NippyJarHeader for T
where T: Send + Sync + Serialize + for<'b> Deserialize<'b> + Debug + 'static,

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impl<T> RpcObject for T
where T: RpcParam + RpcReturn,

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impl<T> RpcParam for T
where T: Serialize + Clone + Debug + Send + Sync + Unpin,

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impl<T> RpcReturn for T
where T: DeserializeOwned + Debug + Send + Sync + Unpin + 'static,

Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 32 bytes