In information security, a fingerprinting algorithm uniquely identifies the hardware, software or data. Just as human fingerprints uniquely identify people for practical purposes. This fingerprint may be used in penetration tests or for vulnerability management.

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Communicating a public key vs it's SHA1 fingerprint

Let's say there is a P2P communication system that establishes secure channels between nodes by letting their users manually exchange and verify their public keys. Would it make any difference from ...
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1answer
120 views

Why do certificates need thumbprints?

I recently learned mechanism of certificates. But I can't understand why a "thumbprint" is included in a certificate. For intermediate and end-user certificates, it is verified by its issuer. so it ...
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4answers
436 views

What are the risks of providing my fingerprint to a theme park?

I recently visited Epcot Center and was surprised that they asked to scan one of my fingerprints before I entered the park, even though I already had my ticket in hand. I don't believe they require a ...
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2answers
170 views

Verify my own self signed SSL certificate

I have generated my own SSL certificate for a web server on the internet, however this was for three reasons: Fun Not wanting to buy an SSL certificate Trying to get an A rating (excluding trust ...
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2answers
123 views

Why do browsers send such detailed user agent strings?

Modern web browsers leak a ridiculous amount of information through the User-Agent header. The following is an example for Safari on iPad, from Wikipedia: Mozilla/5.0 (iPad; U; CPU OS 3_2_1 like Mac ...
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1answer
58 views

Is there value in slowing down retries on a fingerprint lock?

My phone has a fingerprint lock and it sometimes fails to identify my fingerprint (for example, if it wasn't positioned correctly). If I fail fingerprint identification 5 times in a row, I'm locked ...
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1answer
24 views

How to get GnuPG fingerpints only for specified key name, not for substring matches?

I have few GnuPG keys: test, test2, some test. When I invoke gpg --fingerprint test, fingerprints of all keys are listed. When I run gpg --fingerprint test2, only test2 key fingerprint is printed. How ...
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25 views

Principal Password in Kerberos KDC database

Is there a way for me to merge a bank account number, fingerprint image and IMEI of a phone into a single entity that I could possibly use as a password in the Kerberos KDC to uniquely identity a ...
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2k views

Android vs iPhone encryption

I'm really curious to know what the technologies behind Android and iPhone are in regards to encryption. I know Android was supposed to go with encryption by default like iOS 8.0 and beyond and never ...
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71 views

Does information security justifies Iphone 6's “error 53”? [closed]

An update of IPhone 6 software left several IPhones that were previously repaired by an non-certified phone repairer dead. See e.g. this news. Apple claims that this is due to security: A ...
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4answers
311 views

Fraud detection to avoid fake users

I know there is no 100% solution for fraud detection, but at least I want to set some level of confidence in this use case. Suppose that I have a system where: A user need to make a registration A ...
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53 views

Local sockets: does SSL add security? [duplicate]

Situation We have a Windows Service that is listening on a TCP port. This service is responsible for capturing a user's fingerprint using the Windows Biometric Framework, when requested to do so by a ...
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1answer
260 views

Received UDP packet with IP ID of zero:

I am scanning a host in our network with Nexpose and one of the vulnerabilities reported is Received UDP packet with IP ID of zero: IPv4 SRC[10.0.0.5] TGT[127.0.0.1] TOS[192] TTL[64] Flags[40] Proto[...
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1answer
105 views

SSH Server Authentication

I know this question was asked several times in several ways, for example: Can an SSH server fingerprint be spoofed? What stops an SSH server from MITMing logins? However, none provided the ...
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2answers
74 views

How do I know a new host key is safe to accept?

I am frequently rebuilding servers for staging and development. I connect to them with SSH for provisioning. In the process, I'll destroy a VM, rebuild it, and provision it all over again with the ...
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1answer
248 views

What are the implications of 5 million peoples fingerprints being stolen from the US Government?

The recent OPM hack has revealed more fingerprints were stolen than previously believed. One of the scariest parts of the massive cybersecurity breaches at the Office of Personnel Management just ...
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1answer
114 views

xmlhttprequest with https - can I test the fingerprint before sending any data

I am making https calls in javascript via xmlhttprequest. I know the server and its public key in advance. For extra security, I would like to check the public key (or its fingerprint) if its is what ...
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2answers
144 views

Browser fingerprints, theory or reality?

As you may or may not be aware, even when browsing "incognito", you can theoretically be tracked. Browsers have unique fingerprints, just like people do. Check this link to learn more. While I ...
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1answer
78 views

User-friendly TLS certificate validation

I'm designing an application in which clients generate their own TLS certificates ad-hoc (there's no central authority). When two clients interact for a first time, I need for them to mutually check ...
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1k views

Fingerprint scanner browser support [closed]

I need to implement fingerprint scanning for all the users in a secure web app. Do fingerprint reader support chrome or firefox? From my google search they all seems to only be supported by IE. All ...
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1answer
89 views

My internet fingerprint [duplicate]

Please, Do you know any way to delete absolutely all my info from the web? Like, all the info in social media, public places, forums, photoblog. I was using those places without control or worries ...
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1answer
2k views

False acceptance rate in biometric authentication system

False acceptance refers to an unauthorized user given access to a system which he is not allowed to access. Therefore a false acceptance rate of 1% means the system will incorrectly allow access to ...
6
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1answer
465 views

Can an SSH server fingerprint be spoofed?

If I simply connect to an SSH server, get its key fingerprint, and immediately disconnect, does the SSH protocol ensure that the server also had the private key in order to get that far into the ...
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1answer
440 views

RSA Signing Key Rotation

I understand the details of RSA encryption/decryption in that a public key can be distributed in the clear since all it can really do anyway is encrypt data. I also understand that this public key can ...
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2answers
121 views

How to establish a random OTR remote party as a specific individual?

In reading Glenn Greenwald's 2014 book No place to hide, one thing stood out to me as a bit odd. Greenwald details how Edward Snowden was insistent that Greenwald install PGP in order to communicate ...
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1answer
394 views

Is hashing a DLL useful to protect from DLL hijacking?

I want to make sure that the dynamic link libraries used by my application can't be replaced with other libraries of the same name, in order to inject malicious code. Therefore, I thought about ...
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67 views

Matching vulnerabilities with upstream versions

How am I supposed to match vulnerabilities with services fingerprint, with string like these? Is there a public database to match these versions with original versions? > 5.5.29-0ubuntu0.12.04.1 &...
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2answers
330 views

Is there a standard, storage algorithm or protocol for fingerprints?

What are the generic conventions and standards for storing and identifying biometric fingerprints out there? Are there some RFC documents for that? As a sub-question: suppose I want to preserve my ...
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1answer
488 views

Visual fingerprint verification

OpenSSH allows to show a visual representation of fingerprints with the VisualHostKey, see announcement at O'Reilly and here. The output looks approximately like this: # Host github.com found: line ...
9
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2answers
2k views

Is iPhone's fingerprint signature a one-way hash?

I've been considering the security of the iPhone 5S fingerprint feature. My main concern is, not that someone could replicate my fingerprint in the physical world and bypass the phone, however that ...
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3answers
2k views

iPhone 5S security: Given someone's fingerprint can I use a 3D printer to create a fake finger with a real fingerprint on it?

With such a big deal being made about the iPhone 5S's fingerprint reader (and formerly the Thinkpads' fingerprint readers) I really wonder how secure it is to use fingerprints in lieu of passwords. ...
8
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2answers
730 views

Is it possible to reliably derive a key from a biometric fingerprint?

Many products (e.g. notebooks, security doors and now smartphones) support some form of fingerprint authentication. That seems simple enough: A trusted system compares a stored representation of a ...