modular_frost_mirror::sign

Struct AlgorithmSignMachine

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pub struct AlgorithmSignMachine<C: Curve, A: Algorithm<C>> { /* private fields */ }
Expand description

Next step of the state machine for the signing process.

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impl<C: Curve, A: Algorithm<C>> SignMachine<<A as Algorithm<C>>::Signature> for AlgorithmSignMachine<C, A>

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type Params = A

Params used to instantiate this machine which can be used to rebuild from a cache.
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type Keys = ThresholdKeys<C>

Keys used for signing operations.
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type Preprocess = Preprocess<C, <A as Algorithm<C>>::Addendum>

Preprocess message for this machine.
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type SignatureShare = SignatureShare<C>

SignatureShare message for this machine.
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type SignatureMachine = AlgorithmSignatureMachine<C, A>

SignatureMachine this SignMachine turns into.
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fn cache(self) -> CachedPreprocess

Cache this preprocess for usage later. This cached preprocess MUST only be used once. Reuse of it enables recovery of your private key share. Third-party recovery of a cached preprocess also enables recovery of your private key share, so this MUST be treated with the same security as your private key share.
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fn from_cache( algorithm: A, keys: ThresholdKeys<C>, cache: CachedPreprocess, ) -> (Self, Self::Preprocess)

Create a sign machine from a cached preprocess. After this, the preprocess must be deleted so it’s never reused. Any reuse will presumably cause the signer to leak their secret share.
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fn read_preprocess<R: Read>(&self, reader: &mut R) -> Result<Self::Preprocess>

Read a Preprocess message. Despite taking self, this does not save the preprocess. It must be externally cached and passed into sign.
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fn sign( self, preprocesses: HashMap<Participant, Preprocess<C, A::Addendum>>, msg: &[u8], ) -> Result<(Self::SignatureMachine, SignatureShare<C>), FrostError>

Sign a message. Takes in the participants’ preprocess messages. Returns the signature share to be broadcast to all participants, over an authenticated channel. The parties who participate here will become the signing set for this session.
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impl<C: Curve, A: Algorithm<C>> Zeroize for AlgorithmSignMachine<C, A>

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fn zeroize(&mut self)

Zero out this object from memory using Rust intrinsics which ensure the zeroization operation is not “optimized away” by the compiler.

Auto Trait Implementations§

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impl<C, A> Freeze for AlgorithmSignMachine<C, A>
where A: Freeze, <A as Algorithm<C>>::Addendum: Freeze, <C as Ciphersuite>::F: Freeze,

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impl<C, A> RefUnwindSafe for AlgorithmSignMachine<C, A>
where A: RefUnwindSafe, <A as Algorithm<C>>::Addendum: RefUnwindSafe, <C as Ciphersuite>::F: RefUnwindSafe, <C as Ciphersuite>::G: RefUnwindSafe,

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impl<C, A> Send for AlgorithmSignMachine<C, A>

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impl<C, A> Sync for AlgorithmSignMachine<C, A>

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impl<C, A> Unpin for AlgorithmSignMachine<C, A>
where A: Unpin, <A as Algorithm<C>>::Addendum: Unpin, <C as Ciphersuite>::F: Unpin, <C as Ciphersuite>::G: Unpin,

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impl<C, A> UnwindSafe for AlgorithmSignMachine<C, A>
where A: UnwindSafe, <A as Algorithm<C>>::Addendum: UnwindSafe, <C as Ciphersuite>::F: UnwindSafe + RefUnwindSafe, <C as Ciphersuite>::G: RefUnwindSafe + UnwindSafe,

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Causes self to use its Binary implementation when Debug-formatted.
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Causes self to use its Display implementation when Debug-formatted.
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where Self: LowerExp,

Causes self to use its LowerExp implementation when Debug-formatted.
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fn fmt_lower_hex(self) -> FmtLowerHex<Self>
where Self: LowerHex,

Causes self to use its LowerHex implementation when Debug-formatted.
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where Self: Octal,

Causes self to use its Octal implementation when Debug-formatted.
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where Self: UpperExp,

Causes self to use its UpperExp implementation when Debug-formatted.
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where Self: UpperHex,

Causes self to use its UpperHex implementation when Debug-formatted.
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