@silvana-one/mina-utils/dist/node/utils/fields.js

Silvana Mina Utils

import { Field, Poseidon } from "o1js";
import { fieldToBase64, fieldFromBase64 } from "./base64-field.js";
/**
 * Serialize fields to a string using base64 URL-friendly encoding
 * @param fields the fields array to serialize
 * @returns the serialized string
 */
export function serializeFields(fields) {
    const hash = Poseidon.hash(fields);
    const value = [Field(fields.length), hash, ...fields];
    //return value.map((f) => f.toBigInt().toString(36)).join(".");
    return value.map((f) => fieldToBase64(f)).join(".");
}
/**
 * Deserialize fields from a string using base64 URL-friendly encoding
 * @param s the string to deserialize
 * @returns the deserialized fields array
 */
export function deserializeFields(s) {
    try {
        //const value = s.split(".").map((n) => Field(BigInt(convert(n, 36))));
        const value = s.split(".").map((n) => fieldFromBase64(n));
        const length = value[0];
        if (Field(value.length - 2)
            .equals(length)
            .toBoolean() === false)
            throw new Error("deserializeFields: invalid length");
        const hash = Poseidon.hash(value.slice(2));
        if (hash.equals(value[1]).toBoolean()) {
            return value.slice(2);
        }
        else
            throw new Error("deserializeFields: invalid hash: data mismatch");
    }
    catch (e) {
        throw new Error(`deserializeFields: invalid string: ${s}: ${e}`);
    }
}
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