Module 0x1::sigma_protocol_representation_vec

• Struct RepresentationVec
• Function new_representation_vec
• Function get_representations
• Function length
• Function for_each_ref
• Function map_ref
• Function scale_all
• Function scale_each

use 0x1::ristretto255;
use 0x1::sigma_protocol_representation;

Struct RepresentationVec

A vector of Representations. Used to represent the output of the transformation function $f$ and the homomorphism $\psi$ (i.e., a vector in $\mathbb{G}^m$).

struct RepresentationVec has drop

Function new_representation_vec

public(friend) fun new_representation_vec(v: vector<sigma_protocol_representation::Representation>): sigma_protocol_representation_vec::RepresentationVec

public(friend) fun new_representation_vec(v: vector<Representation>): RepresentationVec { RepresentationVec { v } }

Function get_representations

Returns all the underlying Representation’s stored in this vector (Public due to forced inlining for functions that take lambda arguments.)

public(friend) fun get_representations(self: &sigma_protocol_representation_vec::RepresentationVec): &vector<sigma_protocol_representation::Representation>

public(friend) fun get_representations(self: &RepresentationVec): &vector<Representation> {
    &self.v
}

Function length

Returns the number of representations in the vector.

public(friend) fun length(self: &sigma_protocol_representation_vec::RepresentationVec): u64

public(friend) fun length(self: &RepresentationVec): u64 {
    self.v.length()
}

Function for_each_ref

Iterates through every representation in the vector. (Forced inlining for functions that take lambda arguments.)

public(friend) fun for_each_ref(self: &sigma_protocol_representation_vec::RepresentationVec, lambda: |&sigma_protocol_representation::Representation|)

public(friend) inline fun for_each_ref(self: &RepresentationVec, lambda: |&Representation|) {
    self.get_representations().for_each_ref(|repr| lambda(repr))
}

Function map_ref

Maps each representation in the vector to a value of type T.

public(friend) fun map_ref<T>(self: &sigma_protocol_representation_vec::RepresentationVec, lambda: |&sigma_protocol_representation::Representation|T): vector<T>

public(friend) inline fun map_ref<T>(self: &RepresentationVec, lambda: |&Representation| T): vector<T> {
    self.get_representations().map_ref(|repr| lambda(repr))
}

Function scale_all

Multiply all representations by $e$ (i.e., multiply each self.v[i].scalars by $e$).

public(friend) fun scale_all(self: &mut sigma_protocol_representation_vec::RepresentationVec, e: &ristretto255::Scalar)

public(friend) fun scale_all(self: &mut RepresentationVec, e: &Scalar) {
    self.v.for_each_mut(|repr| repr.scale(e));
}

Function scale_each

For all $i$, multiply the $i$th representation by b[i] (i.e., multiply self.v[i].scalars by b[i])

public(friend) fun scale_each(self: &mut sigma_protocol_representation_vec::RepresentationVec, b: &vector<ristretto255::Scalar>)

public(friend) fun scale_each(self: &mut RepresentationVec, b: &vector<Scalar>) {
    self.v.enumerate_mut(|i, repr| {
        repr.scale(&b[i])
    });
}