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import { ICryptoDriver, KeypairBytes } from "./crypto-types.ts";import { concatBytes, stringToBytes } from "../util/bytes.ts";import sodium from "https://deno.land/x/sodium@0.2.0/basic.ts";
await sodium.ready;const { createHash } = sha256_uint8array;
//--------------------------------------------------
import { Logger } from "../util/log.ts";import { sha256_uint8array } from "../../deps.ts";import { UpdatableHash } from "./updatable_hash.ts";const logger = new Logger("crypto-driver-noble", "cyan");
//================================================================================/** * A version of the ICryptoDriver interface backed a WASM wrapper of libsodium. * Faster than noble by several magnitudes. * Works in Deno. */export const CryptoDriverSodium: ICryptoDriver = class {  static async sha256(    input: string | Uint8Array,  ): Promise<Uint8Array> {    if (typeof input === "string") {      const encoded = new TextEncoder().encode(input);      const result = await crypto.subtle.digest("SHA-256", encoded);      return Promise.resolve(new Uint8Array(result));    } else {      const result = await crypto.subtle.digest("SHA-256", input);      return Promise.resolve(new Uint8Array(result));    }  }
  static updatableSha256() {    return new UpdatableHash({      hash: createHash("sha256"),      update: (hash, data) => hash.update(data),      digest: (hash) => hash.digest(),    });  }
  static generateKeypairBytes(): Promise<KeypairBytes> {    logger.debug("generateKeypairBytes");
    const seed = sodium.randombytes_buf(32);    const keys = sodium.crypto_sign_seed_keypair(seed);
    return Promise.resolve({      pubkey: keys.publicKey,      secret: keys.privateKey.slice(0, 32),    });  }  static sign(    keypairBytes: KeypairBytes,    msg: string | Uint8Array,  ): Promise<Uint8Array> {    logger.debug("sign");    if (typeof msg === "string") msg = stringToBytes(msg);
    const identity = concatBytes(keypairBytes.secret, keypairBytes.pubkey);
    return Promise.resolve(sodium.crypto_sign_detached(msg, identity));  }  static verify(    publicKey: Uint8Array,    sig: Uint8Array,    msg: string | Uint8Array,  ): Promise<boolean> {    logger.debug("verify");    try {      if (typeof msg === "string") msg = stringToBytes(msg);
      const verified = sodium.crypto_sign_verify_detached(        sig,        msg,        publicKey,      );
      return Promise.resolve(verified);    } catch {      return Promise.resolve(false);    }  }};