Struct zk_pass::chaum_pedersen::vesta::VestaCurveChaumPedersen

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pub struct VestaCurveChaumPedersen {}
Expand description

The VestaCurveChaumPedersen struct defines the specific types used in the Chaum-Pedersen protocol for the Vesta curve.

Trait Implementations§

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impl ChaumPedersen for VestaCurveChaumPedersen

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

Generates a commitment to a secret on the Vesta curve.

Parameters
  • params - Group parameters of the Vesta curve.
  • x - The secret scalar value to which the commitment is made.
Returns

Returns a tuple containing the commitment parameters and a commitment random scalar.

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fn challenge(_: &GroupParams<Point>) -> Self::Challenge

Generates a random challenge scalar.

Parameters
  • _params - Ignored in this implementation. Group parameters can be used if needed.
Returns

Returns a random scalar value to be used as a challenge.

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

Generates a response to a challenge given a secret and a random scalar.

Parameters
  • _params - Ignored in this implementation. Group parameters can be used if needed.
  • k - The random scalar used during commitment.
  • c - The challenge scalar.
  • x - The secret scalar.
Returns

Returns the response scalar, which is calculated as k + (c * x).

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

Verifies the correctness of the response to a challenge.

Parameters
  • params - Group parameters of the Vesta curve.
  • s - The response scalar.
  • c - The challenge scalar.
  • cp - The commitment parameters tuple.
Returns

Returns true if the verification is successful, false otherwise.

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type Secret = Fp

The type representing the secret to be proven.
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type Response = Fp

The type representing the response in the protocol.
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type Challenge = Fp

The type representing the challenge in the protocol.
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type CommitmentRandom = Fp

The type representing the commitment randomness in the protocol.
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type GroupParameters = GroupParams<Eq>

The type representing the group parameters used in the protocol.
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type CommitParameters = (Eq, Eq, Eq, Eq)

The type representing the commitment parameters in the protocol.

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