Struct dkg::pedpop::AdditionalBlameMachine

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pub struct AdditionalBlameMachine<C: Ciphersuite>(/* private fields */);
Available on crate feature std only.
Expand description

A machine capable of handling an arbitrary amount of additional blame proofs.

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impl<C: Ciphersuite> AdditionalBlameMachine<C>

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pub fn new<R: RngCore + CryptoRng>( rng: &mut R, context: String, n: u16, commitment_msgs: HashMap<Participant, EncryptionKeyMessage<C, Commitments<C>>>, ) -> Result<Self, DkgError<EncryptionKeyProof<C>>>

Create an AdditionalBlameMachine capable of evaluating Blame regardless of if the caller was a member in the DKG protocol.

Takes in the parameters for the DKG protocol and all of the participant’s commitment messages.

This constructor assumes the full validity of the commitment messages. They must be fully authenticated as having come from the supposed party and verified as valid. Usage of invalid commitments is considered undefined behavior, and may cause everything from inaccurate blame to panics.

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pub fn blame( &self, sender: Participant, recipient: Participant, msg: EncryptedMessage<C, SecretShare<C::F>>, proof: Option<EncryptionKeyProof<C>>, ) -> Participant

Given an accusation of fault, determine the faulty party (either the sender, who sent an invalid secret share, or the receiver, who claimed a valid secret share was invalid).

The message should be a copy of the encrypted secret share from the accused sender to the accusing recipient. This message must have been authenticated as actually having come from the sender in question.

This will process the same blame statement multiple times, always identifying blame. It is the caller’s job to ensure they’re unique in order to prevent multiple instances of blame over a single incident.

Trait Implementations§

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impl<C: Debug + Ciphersuite> Debug for AdditionalBlameMachine<C>

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

Formats the value using the given formatter. Read more
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impl<C: Ciphersuite> Zeroize for AdditionalBlameMachine<C>

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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.

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