mina-attestations/build/src/program-spec.js

Private Attestations on Mina

import { Bool, Field, Signature, } from 'o1js';
import { ProvableType } from "./o1js-missing.js";
import { assert } from "./util.js";
import { inferNestedProvable, NestedProvable, } from "./nested.js";
import { withOwner, } from "./credential.js";
import { Node, Operation, root, } from "./operation.js";
export { Spec, Claim, Constant, publicInputTypes, publicOutputType, privateInputTypes, splitUserInputs, extractCredentialInputs, rootValue, isCredentialSpec, };
// implementation
function Spec(inputs, spec) {
    let rootNode = root(inputs);
    let inputNodes = {};
    // some special keys are used internally and must not be used as input keys
    ['owner'].forEach((key) => assert(!(key in inputs), `"${key}" is reserved, can't be used in inputs`));
    for (let key in inputs) {
        if (isCredentialSpec(inputs[key])) {
            let credentialType = inputs[key].credentialType;
            let node = {
                type: 'credential',
                credentialKey: key,
                credentialType,
            };
            inputNodes[key] = node;
        }
        else {
            inputNodes[key] = Operation.property(rootNode, key);
        }
    }
    let logic = spec(inputNodes);
    let assertNode = logic.assert ?? Operation.constant(Bool(true));
    if (Array.isArray(assertNode))
        assertNode = Operation.and(...assertNode);
    let outputClaim = logic.outputClaim ?? Operation.constant(undefined);
    return { inputs, assert: assertNode, outputClaim };
}
function isCredentialSpec(input) {
    return (input !== undefined && input.type !== 'claim' && input.type !== 'constant');
}
function Constant(data, value) {
    return {
        type: 'constant',
        data,
        value: ProvableType.get(data).fromValue(value),
    };
}
function Claim(data) {
    return { type: 'claim', data: inferNestedProvable(data) };
}
// helpers to extract/recombine portions of the spec inputs
function publicInputTypes({ inputs }) {
    let claims = {};
    Object.entries(inputs).forEach(([key, input]) => {
        if (input.type === 'claim') {
            claims[key] = input.data;
        }
    });
    return { context: Field, claims };
}
function privateInputTypes({ inputs }) {
    let credentials = {};
    Object.entries(inputs).forEach(([key, input]) => {
        if (isCredentialSpec(input)) {
            credentials[key] = {
                credential: withOwner(input.data),
                witness: input.witnessType(input.witness),
            };
        }
    });
    return { ownerSignature: Signature, credentials };
}
function publicOutputType(spec) {
    let root = rootType(spec);
    let outputTypeNested = Node.evalType(root, spec.outputClaim);
    return NestedProvable.get(outputTypeNested);
}
function rootType({ inputs }) {
    let result = {};
    Object.entries(inputs).forEach(([key, input]) => {
        if (isCredentialSpec(input)) {
            result[key] = input;
        }
        else {
            result[key] = input.data;
        }
    });
    return result;
}
function splitUserInputs({ context, ownerSignature, claims, credentials, }) {
    return {
        publicInput: { context, claims },
        privateInput: { ownerSignature, credentials },
    };
}
function extractCredentialInputs(spec, { context }, { ownerSignature, credentials }) {
    let credentialInputs = [];
    Object.entries(spec.inputs).forEach(([key, input]) => {
        if (isCredentialSpec(input)) {
            let value = credentials[key];
            credentialInputs.push({
                spec: input,
                credential: value.credential,
                witness: value.witness,
            });
        }
    });
    return { context, ownerSignature, credentials: credentialInputs };
}
function rootValue(spec, { claims }, _, credentialOutputs) {
    let result = {};
    let i = 0;
    Object.entries(spec.inputs).forEach(([key, input]) => {
        if (isCredentialSpec(input)) {
            result[key] = credentialOutputs.credentials[i];
            i++;
        }
        if (input.type === 'claim') {
            result[key] = claims[key];
        }
        if (input.type === 'constant') {
            result[key] = input.value;
        }
    });
    result.owner = credentialOutputs.owner;
    return result;
}
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