ekyc

Electronic KYC process with uploading ID document using OAuth 2.1 (experimental)
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password.ts (1206B)

      1 import {
      2   PASSWORD_ATTEMPT_LIMIT,
      3   PASSWORD_ATTEMPT_TTL,
      4 } from "#core/domain/constants.ts";
      5 import { PasswordHash } from "#core/domain/crypto.ts";
      6 import { DomainError } from "#core/domain/error.ts";
      7 import { Limiter } from "#core/domain/limiter.ts";
      8 
      9 export class PasswordMismatch extends DomainError {
     10   constructor(readonly delay: number) {
     11     super("Password mismatched");
     12   }
     13 }
     14 
     15 export class Password {
     16   private _attemptLimit: Limiter;
     17 
     18   static hash(candidate: string): Password {
     19     return new Password(PasswordHash.hash(candidate));
     20   }
     21 
     22   constructor(
     23     readonly hash: PasswordHash,
     24     attemptCount?: number,
     25     attemptExpire?: number,
     26   ) {
     27     this._attemptLimit = new Limiter(
     28       PASSWORD_ATTEMPT_LIMIT,
     29       PASSWORD_ATTEMPT_TTL,
     30       attemptCount,
     31       attemptExpire,
     32     );
     33   }
     34 
     35   get attemptCount() {
     36     return this._attemptLimit.count;
     37   }
     38 
     39   get attemptExpire() {
     40     return this._attemptLimit.expire;
     41   }
     42 
     43   attempt(candidate: string): void {
     44     this._attemptLimit.increment();
     45     if (!this.verify(candidate)) {
     46       throw new PasswordMismatch(this._attemptLimit.delay);
     47     }
     48   }
     49 
     50   verify(candidate: string): boolean {
     51     return this.hash.verify(candidate);
     52   }
     53 }