Questions tagged [smartcard]

A smart card, or chip card, is a fingernail-sized integrated circuit that is often embedded in a credit-card-sized plastic sheet. Smart cards are used as identification badges, banking cards, SIM in mobile phones, for key storage, and more.

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Does the USB connection have to be trusted when using Yubikey CCID/PIV?

I use a Yubikey in PIV/CCID mode. The PIN is sent from the host computer via automated script and unlocks the Yubikey PIV smartcard. In this mode, is it essential that the USB connection is trusted? ...
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Can ISO 7816 (EMV) based smart card handle interrupts?

ISO 7816 smartcards are typically used in EMV transactions. I know that the card can perform arbitrary actions before sending a response to the terminal in a typical EMV transaction (e.g. signing ...
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What does a TPM have in common with smart cards?

The title really says it all. I'm starting to dig a little bit into computer security and from what I've watched or from what I have read in books or articles there's always a mention of basic smart ...
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Are wedge attacks on EMV cards still viable?

I was looking around to see if wedge attacks on EMV cards are still viable or a solution has been implemented, and if so, have attackers found another way around the solution? The latest literature or ...
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MFA using PKI certificates [closed]

I'm trying to set up a multi factor authentication using PKIs certificates. A PKI infrastructure is ready to use and i'm planning to put these certificates on smart cards. I was looking for a smart ...
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Is it possible to export an expired GPG subkey's public key without signatures?

Based on Is it possible to export a GPG subkey's public component? I got familiar with: gpg --keyid-format long --with-fingerprint --list-key {e-mail} gpg --export --armor --output public-key.asc ...
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How smart cards are blocked?

I have a Yubikey NFC 5, when I enter a wrong PIN or PUK three times the smart card is blocked. Can someone please explain to me how it is blocked ? Does the PIN/PUK functionality is disabled somehow ? ...
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How can hackers steal from a savings account that has no client card? [closed]

Someone I know was stolen a few hundreds dollars from a savings account. Looking at the history, she saw transactions like Uber rides and video games purchases she did not do. This account is used ...
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GnuPG - connecting to specific card reader when multiple reader available

Currently I can use $ gpg --expert --card-status to interact with smartcards that run the OpenPGP applet. Through trial-and-error, it seems that only the first card reader will interact with gpg. ...
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Cryptoki PKCS11 C_Decrypt returns shorter key (decrypted message) than expected

First off let me say I'm fully aware this question can only be answered by the token vendor but I have already contacted them and with the whole COVID situation my hopes of hearing from them soon are ...
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Can one use a gpg smartcard to implement FIDO2?

From what I understand, the idea of FIDO2 is to use symmetric cryptography, with secret key on the token, and public key on the server. When requesting to connect, the server uses the public key to ...
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smart card authentication process

Smart cards (for instance, public transit cards) are widely used in some countries for authentication purposes at universities and workplaces, so that an authorized person can use a printer or access ...
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how to trust a PGP smartcard

I understand the interest of using a PGP solution that is based on a OpenPGP smartcard, such as the Nitrokey Pro or similar. But then, how can I decide that I trust an OpenPGP smartcard?
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Security implications of using unfused U2F token

I noticed that both of the Feitian USB/NFC U2F Security Keys I purchased on Amazon a few years ago are unfused. This means that the pre-personalization step was partially performed but not completed ...
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gpg2: How to get rid of “Please insert card with serial number”, getting the same key from a different card / Yubikey

I have multiple Yubikeys carrying the same GPG secret key. I want to switch from one Yubikey to anohter one on my laptop. The two obviously have different serial numbers. After switching the keys ...
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using public key crypto instead of password for authentication [closed]

I'm the head of IT and development in a small group of enthusiasts spending their free time with a bit of hobby development. We don't have an office yet, but maybe consider to rent some small office ...
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What exactly is the Management Key on a yubikey?

The yubico documentation mentions that a Management Key can be set manually, or it can be inferred in the SoC when setting a PIN for the first time. What exactly is that management key and how does ...
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How to find sniff communication to smart card reader?

I use a smart card reader and I want to know if the reader is secure. How to sniff communication between card and card reader?
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Is it possible to decrypt Outlook Web App S/MIME messages in a web browser with same webclient? [closed]

Normally, you would use a mail client for mail encryption. Though, I can access smartcard security functions from the browser for a secure login. Therefore, is it possible to decrypt Outlook Web App ...
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402 views

Cloning Credit/debit card chip [closed]

I have a nice, expensive, metal credit card with a chip but it's from an older card. I’m wanting to rewrite the magnetic stripe and the chip to my new card. I know how to rewrite the magnetic stripe ...
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Technical realization of fraudulent credit card cash withdrawal

Somebody unauthorized in India managed to withdraw cash from my credit card account. The card I use (and which they claim to have used) is a German Visa prepaid card issued by Postbank. It has a chip ...
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Should I use the same OpenPGP keys in certificates used to provision the YubiKey PIV slots?

I know PIV and OpenPGP are separate standards and independent applications in the YubiKey, but for newcomers like me they look very similar with their signing, encryption and authentication keys, use ...
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816 views

GnuPG can see a card under root user, but not under normal user

When under an unprivileged user: $ gpg --card-status gpg: selecting openpgp failed: No such device gpg: OpenPGP card not available: No such device With sudo or under a root user: $ sudo gpg --card-...
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Does OpenSC required proprietary Gemalto SafeNet middleware to support Gemalto IDPrime card?

I am interesting by buying a Gemalto IDPrime MD 830 card to be used onto two computers in various scenarios: - Storing certificate (Windows, Linux) - Authentication (Linux) The Windows computer would ...
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Can one use a Credit Card as a Smart Card?

Okay, first question on any Stack Exchange site, and Information Security seems the most fitting for this question. Anyways, I realized that my laptop has a smart card reader. I understand that ...
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Smart cards and the behaviour of the browser. Is the PIN cached?

When using smart cards for certificate-based authentication, is the PIN entered by the user to authenticate his smart card to the browser is cached? OR does the certificate gets cached by the browser? ...
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OpenPGP SmartCard: generate revocation certificate on-card?

As far as I can tell: It is possible to generate a private keyring (i.e. signing private key, plus associated encryption private key and authentication private key) entirely on an OpenPGP Smartcard (...
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Active Directory Certificate authentication trust

When setting up Smart card authentication you publish that Intermediate/Sub CA to the NTAuthCertificates object in Active Directory and certificates from that CA will now be OK for certificate ...
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Use GPG smartcard and gpg-agent to protect multiple SSH keys

I have a Yubikey acting as a GPG smartcard. SSH is configured to use the smart card socket for authentication, and authenticating with the GPG key with Authentication capabilities work fine. ssh-add -...
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Can I use 3 same subkeys to 2 different GPG Smartcards?

Generated keys on an air-gapped PC. Backed-up my .gpg folder on a USB. Imported keys to smartcard 1. Keys deleted Replaced .pgp folder with .pgp from USB Imported keys to smartcard 2. Is this setup ...
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774 views

Why can GPG sign messages but not keys?

I am trying to add local signatures to a few of the public keys I have in my keyring, but using gpg --lsign-key fails with the message "no secret key" despite the fact that gpg --sign works. I am ...
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Export GPG key from smartcard and import yubikey

I have the OPEN PGP SMARTCARD V2.1 and there I have a signature key, a encryption key and a authentication key stored. The last 8 digits of the signature key is for example: 1234 5678. Now I want to ...
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Can a hacker compromise the system if he can steal one of the factors of the 2FA?

I read this article saying that smartcards used as a 2FA are still susceptible to attacks such as MITM attack: They think 2FA is unhackable...undefeatable, when that clearly isn’t true. They think ...
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Is using a username and smart card two-factor authentication?

Is username counted as one-factor, something you know? A smart card (which contains the username and user information inside the card) is something you have. What if the smart card doesn't contain ...
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What (small) computer chips are able to run JCOP and are EMV compatible? [closed]

NXP Semiconductors has the Smartmx2 P60 that is able to run JCOP3 and is compatible with EMV. Now I wonder where one can find other tiny chips that are capable of the same thing but perhaps a bit ...
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Desktop browser that supports Fido U2F over CCID

Is there any browser that supports Fido U2F over CCID for smart cards? As far as I can see Firefox and Chrome only support U2F over HID, and only Chrome for Android (with Google Authenticator2) ...
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675 views

Which type of smart card supports certificates?

For an IT security demonstration I want to set up a small demo PKI including smart card authentication based on certificates generated by a Certificate Authority, using a class 3 pin pad reader. For ...
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What forces SSL exchange to require my smartcard to finish handshake

First, I hope that this is a legitimate question because it is spawned by what I am experiencing and what is happening. The environment is as follows... I have an apache reverse proxy, that I stood ...
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Signing/certifying keys as a YubiKey user

After using a yubikey on a day-to-day basis for almost a year, I decided that it was about time to learn how to certify my friends' keys. I was surprised to learn that one can only sign keys using ...
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Where is the ID chip in this card?

I recently attended a Salesforce World Tour. As part of being identifiable and being marketable you get this ID card that the exhibitors scan, so that they can get your name, company, email and ...
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Why would anyone steal a boom-gate access card scanner? [closed]

A card reader was stolen from the boom gates of the building last night. There is another card reader at the roller doors of the garage and then again at every elevator. I was wondering why would ...
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Is a smartcard single or multi-factor authentication

Since it is only something you have, that makes it single factor authentication right?
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Do 2 Chip based cards effect each other's data if they are in the same wallet all the time?

So I got 2 new ATM cards from two different banks, both cards are Chip and NFC enabled. Card A arrived one week earlier than Card B. Both of them remain in my wallet in close proximity to each other, ...
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How to scale smart card authentication?

We are doing a proof of concept project for a client to introduce smart card authentication for his operations admins. Authentication in client's context means mainly SSH access. We encountered a ...
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Is identification with NFC bank cards feasible?

Imagine I want to identify users more securely than using username/password, e.g. a hardware token. However, I can't issue smartcards to them. Is it a good idea to try to use NFC-enabled bank cards ...
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538 views

When generating PKI key pair with a smart card, who decides if the key is exportable?

I'm in the process of obtaining a code signing certificate from a CA that requires the use of a smart card for the generation of the PKI key pair. However, I would like to be in the possession of the ...
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Does Chrome cache smartcard PIN?

When I have authenticated with a server suing TLS/SSL using HTTPS using a smartcard and PIN and I invalidate the TLS session by restarting the server, refreshing Chrome browser does not reprompt for a ...
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What's the difference between random number evaluation among AIS-31 AIS-20 and NIST sp800-22

I'm trying to know about the evaluation of random number generated by smart card chip. But these standards AIS-31, AIS-20 and NIST sp800-22 confuse me. Could someone help me with a brief explanation ...
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163 views

Accesing private information in PKI Smart Card without PIN [duplicate]

Cryptographic smart cards such as https://www.acs.com.hk/download-manual/5997/FSP-ACOS5-64-1.04.pdf claims that they provide secure digital-signing and encryption. If, my smart card were stolen by ...
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How can a debit card provide different answers when the same challenge is sent to it multiple times?

I do only banking with my "PostFinance" debit card. The sign-in protocol works like this: Enter user name and password into web form. Get a 9 digit challenge number on website. Type the challenge ...

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