Struct sp_application_crypto::bandersnatch::Pair

pub struct Pair { /* private fields */ }
Expand description

Bandersnatch secret key.

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impl Pair

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

Get the key seed.

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impl Pair

pub fn make_bytes<const N: usize>( &self, context: &'static [u8], input: &VrfInput ) -> [u8; N]

Generate an arbitrary number of bytes from the given context and VRF input.

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impl Pair

pub fn ring_vrf_sign( &self, data: &VrfSignData, prover: &RingProver<Fp<MontBackend<FrConfig, 4>, 4>, KZG<Bls12<Config<HostHooks>>>, BandersnatchConfig<HostHooks>> ) -> RingVrfSignature

Produce a ring-vrf signature.

The ring signature is verifiable if the public key corresponding to the signing Pair is part of the ring from which the RingProver has been constructed. If not, the produced signature is just useless.

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impl AsMut<Pair> for Pair

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fn as_mut(&mut self) -> &mut Pair

Converts this type into a mutable reference of the (usually inferred) input type.
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impl AsRef<Pair> for Pair

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fn as_ref(&self) -> &Pair

Converts this type into a shared reference of the (usually inferred) input type.
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impl Clone for Pair

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fn clone(&self) -> Pair

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl CryptoType for Pair

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type Pair = Pair

The pair key type of this crypto.
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impl From<Pair> for Pair

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fn from(outer: Pair) -> Self

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

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fn from(inner: Pair) -> Self

Converts to this type from the input type.
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impl Pair for Pair

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fn from_seed_slice(seed_slice: &[u8]) -> Result<Pair, SecretStringError>

Make a new key pair from secret seed material.

The slice must be 32 bytes long or it will return an error.

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fn derive<Iter>( &self, path: Iter, _seed: Option<[u8; 32]> ) -> Result<(Pair, Option<[u8; 32]>), DeriveError>
where Iter: Iterator<Item = DeriveJunction>,

Derive a child key from a series of given (hard) junctions.

Soft junctions are not supported.

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fn sign( &self, data: &[u8] ) -> CryptoBytes<sp_core::::bandersnatch::Signature::{constant#0}, (SignatureTag, BandersnatchTag)>

Sign a message.

In practice this produce a Schnorr signature of a transcript composed by the constant label SIGNING_CTX and data without any additional data.

See vrf::VrfSignData for additional details.

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fn to_raw_vec(&self) -> Vec<u8> ⓘ

Return a vector filled with the seed (32 bytes).

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type Seed = [u8; 32]

The type used to (minimally) encode the data required to securely create a new key pair.
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type Public = CryptoBytes<sp_core::::bandersnatch::Public::{constant#0}, (PublicTag, BandersnatchTag)>

The type which is used to encode a public key.
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type Signature = CryptoBytes<sp_core::::bandersnatch::Signature::{constant#0}, (SignatureTag, BandersnatchTag)>

The type used to represent a signature. Can be created from a key pair and a message and verified with the message and a public key.
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fn public( &self ) -> CryptoBytes<sp_core::::bandersnatch::Public::{constant#0}, (PublicTag, BandersnatchTag)>

Get the public key.
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fn verify<M>( signature: &CryptoBytes<sp_core::::bandersnatch::Signature::{constant#0}, (SignatureTag, BandersnatchTag)>, data: M, public: &CryptoBytes<sp_core::::bandersnatch::Public::{constant#0}, (PublicTag, BandersnatchTag)> ) -> bool
where M: AsRef<[u8]>,

Verify a signature on a message. Returns true if the signature is good.
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fn generate() -> (Self, Self::Seed)

Generate new secure (random) key pair. Read more
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fn generate_with_phrase(password: Option<&str>) -> (Self, String, Self::Seed)

Generate new secure (random) key pair and provide the recovery phrase. Read more
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fn from_phrase( phrase: &str, password: Option<&str> ) -> Result<(Self, Self::Seed), SecretStringError>

Returns the KeyPair from the English BIP39 seed phrase, or an error if it’s invalid.
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fn from_seed(seed: &Self::Seed) -> Self

Generate new key pair from the provided seed. Read more
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fn from_string_with_seed( s: &str, password_override: Option<&str> ) -> Result<(Self, Option<Self::Seed>), SecretStringError>

Interprets the string s in order to generate a key Pair. Returns both the pair and an optional seed, in the case that the pair can be expressed as a direct derivation from a seed (some cases, such as Sr25519 derivations with path components, cannot). Read more
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fn from_string( s: &str, password_override: Option<&str> ) -> Result<Self, SecretStringError>

Interprets the string s in order to generate a key pair. Read more
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impl VrfCrypto for Pair

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type VrfInput = VrfInput

VRF input.
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type VrfPreOutput = VrfPreOutput

VRF pre-output.
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type VrfSignData = VrfSignData

VRF signing data.
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type VrfSignature = VrfSignature

VRF signature.
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impl VrfSecret for Pair

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fn vrf_sign( &self, data: &<Pair as VrfCrypto>::VrfSignData ) -> <Pair as VrfCrypto>::VrfSignature

Sign VRF-specific data.
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fn vrf_pre_output( &self, input: &<Pair as VrfCrypto>::VrfInput ) -> <Pair as VrfCrypto>::VrfPreOutput

Get VRF-specific pre-output.

Auto Trait Implementations§

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impl !RefUnwindSafe for Pair

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impl Send for Pair

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impl !Sync for Pair

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impl Unpin for Pair

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impl UnwindSafe for Pair

Blanket Implementations§

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impl<T> Any for T
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Gets the TypeId of self. Read more
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Immutably borrows from an owned value. Read more
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Causes self to use its Binary implementation when Debug-formatted.
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