Struct zk_pass::chaum_pedersen::discretelog::DiscreteLogChaumPedersen

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pub struct DiscreteLogChaumPedersen {}
Expand description

A struct representing the Chaum-Pedersen protocol specialized for discrete logarithm-based groups. This protocol is used for demonstrating knowledge of a secret in a zero-knowledge manner.

Trait Implementations§

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impl ChaumPedersen for DiscreteLogChaumPedersen

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type Secret = BigUint

Defines the type of secret values used in this protocol as BigUint.

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type CommitmentRandom = BigUint

Defines the type of randomness used during the commitment phase as BigUint.

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type Response = BigUint

Defines the type of response generated in the protocol as BigUint.

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type Challenge = BigUint

Defines the type of challenge used in the protocol as BigUint.

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type GroupParameters = GroupParams<BigUint>

Defines the group parameters specific to discrete logarithm groups as GroupParams<BigUint>.

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type CommitParameters = (BigUint, BigUint, BigUint, BigUint)

Defines the type of parameters returned during the commitment phase. These include two values representing the commitment and two values representing the randomness.

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fn commitment( params: &Self::GroupParameters, x: &Self::Secret ) -> (Self::CommitParameters, Self::CommitmentRandom)where Self: Sized,

Calculates the commitment for the given secret x using the provided group parameters.

Arguments
  • params: Group parameters which include the base points g and h, and the moduli p and q.
  • x: The secret value for which the commitment is being calculated.
Returns

A tuple containing:

  • A tuple of commitments (y1, y2, r1, r2), where y1 and y2 are the actual commitments and r1 and r2 are the random commitments.
  • The random value k used in the commitment calculations.
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fn challenge(params: &GroupParams<BigUint>) -> BigUint

Generates a random challenge for the protocol within the group’s range. This challenge is used as part of the verification process.

Arguments
  • params: Group parameters used to define the range within which the challenge is generated.
Returns

A BigUint representing the challenge value.

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fn challenge_response( params: &Self::GroupParameters, k: &Self::CommitmentRandom, c: &Self::Challenge, x: &Self::Secret ) -> Self::Responsewhere Self: Sized,

Generates a random challenge for the protocol within the group’s range. This challenge is used as part of the verification process.

Arguments
  • params: Group parameters used to define the range within which the challenge is generated.
Returns

A BigUint representing the challenge value.

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fn verify( params: &Self::GroupParameters, s: &Self::Response, c: &Self::Challenge, cp: &Self::CommitParameters ) -> bool

Verifies the response against the given commitment, challenge, and group parameters. The function checks if the response is valid based on the protocol’s criteria.

Arguments
  • params: Group parameters used in the verification.
  • s: The response to be verified.
  • c: The challenge against which the response is being verified.
  • cp: The commitment parameters (y1, y2, r1, r2) against which the response is being verified.
Returns

true if the verification is successful and the response is valid; false otherwise.

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impl Clone for DiscreteLogChaumPedersen

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fn clone(&self) -> DiscreteLogChaumPedersen

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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