Passwordless Authentication

Written by Selvin Ortiz on April 1, 2024

Pass¬≠words have been the back¬≠bone of dig¬≠i¬≠tal authen¬≠ti¬≠ca¬≠tion for decades, but their short¬≠com¬≠ings are becom¬≠ing increas¬≠ing¬≠ly appar¬≠ent in today‚Äôs cyber¬≠se¬≠cu¬≠ri¬≠ty land¬≠scape. From eas¬≠i¬≠ly guess¬≠able pass¬≠words to cre¬≠den¬≠tial stuff¬≠ing attacks, the risks posed by tra¬≠di¬≠tion¬≠al pass¬≠word-based authen¬≠ti¬≠ca¬≠tion are dri¬≠ving a shift towards pass¬≠word¬≠less solu¬≠tions. This arti¬≠cle explores the cur¬≠rent state of pass¬≠word¬≠less authen¬≠ti¬≠ca¬≠tion, how it works, and its poten¬≠tial ben¬≠e¬≠fits and drawbacks.

The Pass­word Prob­lem #

Despite repeat¬≠ed warn¬≠ings about using strong, unique pass¬≠words, many users still rely on weak cre¬≠den¬≠tials that are easy to crack or reuse the same pass¬≠words across mul¬≠ti¬≠ple accounts. This neg¬≠li¬≠gence, com¬≠bined with the preva¬≠lence of data breach¬≠es, has made pass¬≠words a major vulnerability.‚Äė1

Accord¬≠ing to the Ver¬≠i¬≠zon 2022 Data Breach Inves¬≠ti¬≠ga¬≠tions Report, over 60% of breach¬≠es involved cre¬≠den¬≠tial data like pass¬≠words. Cyber¬≠crim¬≠i¬≠nals can lever¬≠age tech¬≠niques like pass¬≠word spray¬≠ing, brute-forc¬≠ing, and cre¬≠den¬≠tial stuff¬≠ing to gain unau¬≠tho¬≠rized access to sys¬≠tems and data.

Clear¬≠ly, pass¬≠words alone are no longer suf¬≠fi¬≠cient for secur¬≠ing dig¬≠i¬≠tal iden¬≠ti¬≠ties and assets. This real¬≠iza¬≠tion has fueled the adop¬≠tion of mul¬≠ti-fac¬≠tor authen¬≠ti¬≠ca¬≠tion (MFA) and, more recent¬≠ly, a push towards pass¬≠word¬≠less authentication.

What is Pass­word­less Authen­ti­ca­tion? #

Pass¬≠word¬≠less authen¬≠ti¬≠ca¬≠tion refers to ver¬≠i¬≠fy¬≠ing a user‚Äôs iden¬≠ti¬≠ty with¬≠out rely¬≠ing on tra¬≠di¬≠tion¬≠al pass¬≠words or PINs. Instead, it lever¬≠ages fac¬≠tors like bio¬≠met¬≠rics (e.g., fin¬≠ger¬≠prints, facial recog¬≠ni¬≠tion), pos¬≠ses¬≠sion fac¬≠tors (e.g., mobile devices, secu¬≠ri¬≠ty keys), or a com¬≠bi¬≠na¬≠tion of these.

The core prin¬≠ci¬≠ple is to elim¬≠i¬≠nate the need for users to remem¬≠ber and man¬≠age com¬≠plex pass¬≠words, reduc¬≠ing the risk of cre¬≠den¬≠tial-based attacks while pro¬≠vid¬≠ing a more seam¬≠less and secure authen¬≠ti¬≠ca¬≠tion experience.

How Pass­word­less Authen­ti­ca­tion Works #

While pass¬≠word¬≠less authen¬≠ti¬≠ca¬≠tion solu¬≠tions can vary, they typ¬≠i¬≠cal¬≠ly fol¬≠low a sim¬≠i¬≠lar process:

  1. Reg¬≠is¬≠tra¬≠tion: Dur¬≠ing the ini¬≠tial reg¬≠is¬≠tra¬≠tion or enroll¬≠ment phase, the user‚Äôs device (e.g., smart¬≠phone, lap¬≠top) gen¬≠er¬≠ates a unique cryp¬≠to¬≠graph¬≠ic key pair ‚Äď a pub¬≠lic key and a pri¬≠vate key. The pub¬≠lic key is secure¬≠ly shared with the ser¬≠vice provider, while the pri¬≠vate key remains secure¬≠ly stored on the user‚Äôs device.

  2. Authen¬≠ti¬≠ca¬≠tion: When the user attempts to log in or access a ser¬≠vice, the ser¬≠vice provider sends a chal¬≠lenge to the user‚Äôs device. The device then uses the pri¬≠vate key to sign the chal¬≠lenge, cre¬≠at¬≠ing a cryp¬≠to¬≠graph¬≠ic response that is sent back to the ser¬≠vice provider for ver¬≠i¬≠fi¬≠ca¬≠tion using the pre¬≠vi¬≠ous¬≠ly reg¬≠is¬≠tered pub¬≠lic key.

  3. Addi¬≠tion¬≠al Fac¬≠tors: Depend¬≠ing on the solu¬≠tion, the user may be prompt¬≠ed to pro¬≠vide addi¬≠tion¬≠al fac¬≠tors, such as bio¬≠met¬≠rics (e.g., fin¬≠ger¬≠print, facial recog¬≠ni¬≠tion) or pos¬≠ses¬≠sion fac¬≠tors (e.g., approv¬≠ing a prompt on their mobile device), to com¬≠plete the authen¬≠ti¬≠ca¬≠tion process.

This process elim¬≠i¬≠nates the need for the user to remem¬≠ber and enter a pass¬≠word, while also pro¬≠vid¬≠ing a high¬≠er lev¬≠el of secu¬≠ri¬≠ty com¬≠pared to tra¬≠di¬≠tion¬≠al pass¬≠word-based authentication.

Exam­ples of Pass­word­less Authen­ti­ca­tion #

Sev­er­al major tech­nol­o­gy com­pa­nies have already imple­ment­ed pass­word­less authen­ti­ca­tion solu­tions, including:

Here‚Äôs a sim¬≠ple exam¬≠ple of how pass¬≠word¬≠less authen¬≠ti¬≠ca¬≠tion could be imple¬≠ment¬≠ed using the WebAu¬≠thn API in a web application:

// Register a new credential
const credential = await navigator.credentials.create({
  publicKey: {
    // Relying Party (service) information
    rp: { id, name, ... },
    // User information
    user: { id, name, displayName, ... },
    // Authentication options
    pubKeyCredParams: [...],
    authenticatorSelection: {...},

// Authenticate with an existing credential
const assertion = await navigator.credentials.get({
  publicKey: {
    // Relying Party information
    // Authentication options
    userVerification, allowCredentials, ...

In this exam¬≠ple, the navigator.credentials.create() method is used to reg¬≠is¬≠ter a new cre¬≠den¬≠tial (cryp¬≠to¬≠graph¬≠ic key pair) for the user, while navigator.credentials.get() is used to authen¬≠ti¬≠cate the user with an exist¬≠ing cre¬≠den¬≠tial, poten¬≠tial¬≠ly prompt¬≠ing for addi¬≠tion¬≠al fac¬≠tors like biometrics.

Pros of Pass­word­less Authen­ti­ca­tion #

  1. Improved Secu­ri­ty: By elim­i­nat­ing pass­words, pass­word­less authen­ti­ca­tion sig­nif­i­cant­ly reduces the risk of cre­den­tial-based attacks, such as phish­ing, cre­den­tial stuff­ing, and brute-force attempts.

  2. Enhanced User Expe¬≠ri¬≠ence: Users no longer need to remem¬≠ber and man¬≠age com¬≠plex pass¬≠words, lead¬≠ing to a more seam¬≠less and user-friend¬≠ly authen¬≠ti¬≠ca¬≠tion experience.

  3. Reduced IT Over­head: With no pass­words to man­age, IT teams can save time and resources pre­vi­ous­ly ded­i­cat­ed to pass­word resets, pol­i­cy enforce­ment, and user education.

  4. Com­pli­ance and Reg­u­la­tions: Pass­word­less authen­ti­ca­tion can help orga­ni­za­tions meet com­pli­ance require­ments and indus­try stan­dards relat­ed to data pro­tec­tion and cybersecurity.

Cons of Pass­word­less Authen­ti­ca­tion #

  1. Imple­men­ta­tion Com­plex­i­ty: Deploy­ing pass­word­less authen­ti­ca­tion solu­tions can be com­plex, requir­ing changes to exist­ing infra­struc­ture, user train­ing, and inte­gra­tion with var­i­ous devices and platforms.

  2. Device Depen­den­cy: Pass­word­less authen­ti­ca­tion relies heav­i­ly on user devices, which can be lost, stolen, or com­pro­mised, poten­tial­ly impact­ing access to accounts and services.

  3. Com¬≠pat¬≠i¬≠bil¬≠i¬≠ty Issues: Not all devices, plat¬≠forms, and ser¬≠vices cur¬≠rent¬≠ly sup¬≠port pass¬≠word¬≠less authen¬≠ti¬≠ca¬≠tion stan¬≠dards, which can lead to com¬≠pat¬≠i¬≠bil¬≠i¬≠ty issues and a frag¬≠ment¬≠ed user experience.

  4. Back­up Authen­ti­ca­tion Meth­ods: Orga­ni­za­tions must have robust back­up authen­ti­ca­tion meth­ods in place, such as recov­ery codes or tem­po­rary pass­words, to ensure users can regain access in case of device loss or oth­er issues.

The Future of Pass­word­less Authen­ti­ca­tion #

As cyber¬≠se¬≠cu¬≠ri¬≠ty threats con¬≠tin¬≠ue to evolve, the need for more secure and user-friend¬≠ly authen¬≠ti¬≠ca¬≠tion meth¬≠ods becomes increas¬≠ing¬≠ly cru¬≠cial. Pass¬≠word¬≠less authen¬≠ti¬≠ca¬≠tion rep¬≠re¬≠sents a sig¬≠nif¬≠i¬≠cant step for¬≠ward in this direc¬≠tion, offer¬≠ing improved secu¬≠ri¬≠ty and a bet¬≠ter user expe¬≠ri¬≠ence com¬≠pared to tra¬≠di¬≠tion¬≠al pass¬≠word-based authentication.

While the adop¬≠tion of pass¬≠word¬≠less authen¬≠ti¬≠ca¬≠tion is still in its ear¬≠ly stages, with ongo¬≠ing efforts to stan¬≠dard¬≠ize and stream¬≠line imple¬≠men¬≠ta¬≠tion, it is poised to become a main¬≠stream solu¬≠tion in the com¬≠ing years. Orga¬≠ni¬≠za¬≠tions that embrace pass¬≠word¬≠less authen¬≠ti¬≠ca¬≠tion ear¬≠ly on can gain a com¬≠pet¬≠i¬≠tive advan¬≠tage by enhanc¬≠ing their secu¬≠ri¬≠ty pos¬≠ture and pro¬≠vid¬≠ing a supe¬≠ri¬≠or user experience.

How¬≠ev¬≠er, it‚Äôs impor¬≠tant to note that pass¬≠word¬≠less authen¬≠ti¬≠ca¬≠tion is not a sil¬≠ver bul¬≠let solu¬≠tion. It should be imple¬≠ment¬≠ed as part of a com¬≠pre¬≠hen¬≠sive secu¬≠ri¬≠ty strat¬≠e¬≠gy that includes oth¬≠er mea¬≠sures such as mul¬≠ti-fac¬≠tor authen¬≠ti¬≠ca¬≠tion, access con¬≠trols, and ongo¬≠ing secu¬≠ri¬≠ty aware¬≠ness train¬≠ing for users.

Who wrote this article?

Selvin OrtizūüĎč

I'm a software engineer and content creator.
I help brands develop software and content strategies ūüöÄ

On this blog, I write about software development, emerging technology, technical leadership, and content creation ‚ú®

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