Encryption is the process of transforming plaintext using a cipher to make it unreadable to anyone except those possessing the key.

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Is any encyption used for EAP-TLS certificate exchange?

I was reading about the EAP-TLS and mutual client - server authentication using digital certificates. In the authentication process explained in RFC 5216, both server and client exchange ...
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53 views

Would a hard-coded public key or fingerprint protect against MITM?

Say there's a server and a client. Normally to connect and establish an end-to-end encrypted session, they'd have to carry out key exchange, which potentially gives an attacker the opportunity to ...
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97 views

Password Encryption For PHP 5.3 or Should We Update to 5.5+?

I'm trying to hash passwords for our company site. After testing on a local Apache server that has PHP 5.5.9 and everything working as expected, I went to test on our live server being hosted by ...
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2answers
129 views

Is storing an encrypted zip file to an insecure cloud service an admissible way of securing privacy?

Consider the following scenario: I use a cloud service that is not considered secure (meaning no encryption whatsoever) i.e. Dropbox, OneDrive, Google Drive etc. In my account I have a .zip or .7z ...
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69 views

How could I encrypt an SD card to store data on it?

I have some data I'd like to carry with me in an encrypted form onto an SD card, so I (and only I) can access it easily from any OS (or at least Windows, OSX and Ubuntu). My idea was like: Two ...
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1answer
87 views

Is using trim on a ssd with LVM LUKS safe?

I know that it can allow an attacker to know the filesystem and file size, but can it allow an attacker to decrypt any files?
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1answer
112 views

How to detect zip file encryption algorithm

As we know zip files supports a simple password-based symmetric encryption system and some vendors use other algorithms. I used the zipinfo command in Linux but it doesn't say what encryption ...
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10answers
38k views

Is Windows BitLocker secure?

Naturally I feel that I have to ask this question, since it's a built-in feature in Windows. Let's say someone has physical access to my PC, is there an easy way for them to access a BitLocker ...
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16 views

Password Managers — Generating Passwords On The Fly a Safe Approach? [duplicate]

Most password managers store user credentials for individual services encrypted on their own back-end databases, so that your passwords are available on multiple devices. So, a DB compromise on these ...
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1answer
95 views

How to check if the decryption is correct?

I'm working on chat room that encrypt messages for more than one users and each user might have different encryption and key/password. The user's key won't work with all the message, therefore; return ...
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3answers
269 views

why don't we store passwords in a database using encryption instead of hashing? [duplicate]

hashing is a one way method, if a user lost his password he will never be able to get that password from the server, so why don't we store passwords in a database using encryption instead of hashing?
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2answers
133 views

What are the recommended steps involved in creating an encrypted file format? [closed]

I'm developing a pretty standard program which lets users save their work in a custom file format and reopen it later. Now I'd like to add the capability to encrypt the file using a user-defined ...
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1answer
109 views

Why POODLE vulnerability has for each byte a probability of 1/256 to get it in plaintext?

I read the Google paper about POODLE vulnerability (https://www.openssl.org/~bodo/ssl-poodle.pdf) and a lot of other articles. Each paper/article wrote about that you have to try it in average 256 ...
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2answers
271 views

Biometric device instead of password - signature security

Lets assume that there is a bio-metric algorithm for user authentication which compares fingerprints with a user's signature saved in a database (comparing function is not important here). Next, there ...
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1answer
101 views

Who defined the term “end-to-end encryption”?

I am trying to find the origin of the term "end-to-end encryption", but have been unsuccessful until now.
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3answers
131 views

Why are low-entropy passwords considered OK in many cases?

When talking symmetric encryption, a 56 bit key is known to be so weak. If you use it for your encryption, you are considered a goner as you wont survive brute-force. When talking passwords however, ...
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3answers
8k views

Is it safe to auto-fill credit card numbers using Chrome?

Is it safe to auto fill credit card numbers using Chrome? Does it safely store the credit card information? As far as my understanding goes, it just shows asterisk values but on click it reveals the ...
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3answers
198 views

Do file-encrypting software give a false sense of security? [closed]

I sometimes use a VeraCrypt volume to store personal data (mostly backups from another computer) on a Windows computer I don't own. But I learned over the years that modern OSes store users' data in ...
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4answers
286 views

Which layer of OSI model does end-to-end encryption and decryption happen in a network? Why?

I thought it happens at Layer 6, but some resources state that it happens at either Layer 3 or 4.
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22 views

Substitution Table in TKIP

In TKIP Encapsulation, we divided the per packet key mixing process into two phases. In phase 1, we are taking three inputs i.e temporal key (128-bit session key), transmitter MAC address (48 bits) ...
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1answer
129 views

Everykey (Bluetooth master key) - is it really secure? [closed]

Obligatory disclosure I have no relation to the Everykey company and do not mean to promote them in any way. I came across the product Everykey that claims to be "your only key" by allowing you to ...
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0answers
76 views

How to communicate securely between my Swift app and a localhost socket.io server?

I have written a tiny Swift app that uses NSTask to start up a nodejs socket.io server (bundled with the app), which it then connects to via the official socket.io Swift client (https://github.com/...
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1answer
73 views

How to figure out encryption given input and output text? [duplicate]

I need to figure out how some fields are being encrypted. In my program, I can change the input text and see the encrypted output text. For example, "Admin" results in "51@fnmk5gHT[^FX". I ...
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0answers
119 views

How to crack (get secret from) Android Keystore System

I am looking for the best way to protect sensitive data in Android devices, e.g. secret or private keys, and found Android Keystore System. Based on the documentation, key material may be bound to ...
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1answer
56 views

Securing confidential information between users

I know there are several issues about encryption, but my case is slightly different Users have confidential information stored on their device They have a RSA key pair The information must be ...
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6answers
21k views

How secure is NTFS encryption?

How secure is the data in a encrypted NTFS folder on Windows (XP, 7)? (The encryption option under file|folder -> properties -> advanced -> encrypt.) If the user uses a decent password, can this ...
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1answer
120 views

How to make secure communication between servers

I have two servers with 2 web application in PHP, I need this server make a secure communication there is my scope: I need to application 1 make a POST on application 2, but on application 2 I need ...
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2answers
225 views

Why does Mozilla Firefox encrypt saved passwords?

If you ask Mozilla Firefox to remember the login details for a website, the credentials will be stored in your profile directory in Logins.json. Instead of storing plaintext values, the username and ...
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1answer
89 views

How long does it take to brute force a 7 character long password taken from 16 character set

A database file is encrypted with 256bits AES and the key is the first 7 characters (from the character set 0-9, a - f, all small letter) of MD5 hash . This implies 2^28 bits (268,435,456) possible ...
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2answers
407 views

Bitwise cipher Cryptography

I'm doing an online cryptography course. There is a question in which it is given that the encrypted text for; OwBPAAQXAE9UC0FVBQxODgZSCUUMAQwCCApYRBJZBR0LDhoAGApPHQAUAQNZRAJPGwQbDQBDDREKQA== Is ...
70
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6answers
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Why most people use 256 bit encryption instead of 128 bit?

Isn't 128 bit security enough for most practical applications?
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1answer
29 views

Modsecurity Encrypted traffic in 3 tier architecture

The scenario is that we have 3 tier architecture DMZ > BEA > DB with end to end encryption the data is encrypted within DMZ > BEA > DB. I have read that modsecurity doest deal with encrypted traffic ...
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5answers
603 views

Is using Tor and VPN combination more secure?

I have been reading more about Tor and its risks to personal data leakage to the exit nodes in the chain. This last node can snatch encryption keys or log in information of websites I may have ...
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Insecure data in-transit

My organization processes some PII data and shares it with an outbound connection (outflow only) that is a third party. The data transfer transactions occur without human intervention. That outbound ...
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2answers
339 views

How Does Telegram's Identity Verification Work?

Note: please refrain from commenting on Telegram's design of OTHER parts, as it will distract from the stem of the question. Background: Signal (Previously, "TextSecure" app) uses specific "Your ...
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2answers
269 views

Is there an equivalent of an Apple cryptochip in Android devices?

Apple has a cryptochip which, beside managing the encryption keys, tunnels authentication and provides throttling of failed attempts, as well as the ability to trigger a device wipe after several ...
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5answers
728 views

What steps should one take to provide “reasonable” levels of privacy from a government?

I'm highly uncomfortable with the recent news surrounding government snooping in the UK. If we define a typical user to mean somebody who: Browses web sites such as BBC News and Stack Overflow Uses ...
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0answers
41 views

Best way to store SQLite password offline? [duplicate]

I'm developing a Windows application that uses SQLite, and I want to encrypt it (there is some sensitive information). The trouble is that one of the application requirements is that it must work ...
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2answers
74 views

Storing two copies of data, encrypted in different ways

Our website has some personal data that needs to be visible to both the user it belongs to and the administrators. It also needs to be encrypted. As we want to maintain a simple system, just username ...
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93 views

Decryption with two-way authentication

We have a Customer who wants his sensitive user-data stored with an encryption. These are the basic requirements: Sensitive user-data is stored in a database using encryption A remote-attacker who ...
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0answers
41 views

Unable to view USB Hard drive contents after lock(read-only access)

My work laptop has PGP Desktop 10.3 and when I connected my USB flashdrive it prompted me to Encrypt or Lock. Given the information on both of these options the only choice I had in order to access ...
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28 views

AES256 nopadding vs PKCS7Padding

I was looking over AES Crypt's Java lib which seems like a secure AES encryption software and I noticed that they are using nopadding. Can somebody explain to me what the benefit of using nopadding as ...
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1answer
69 views

Questions regarding AES 256

i have googled and searched quite alot but most things just state the same things but not answering my questions so hopefully you guys can help me out abit Story: i am looking at creating an ...
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9answers
6k views

Would an encryption scheme that generates an extra key to be securely stored offsite be a safe backdoor?

Let me be clear first and foremost: I do not think installing a backdoor in security algorithms is a good idea. They undermine the trust in the software and in the company that provides the service. ...
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1answer
304 views

How to make sure that the public key has not been tampered with during transit?

I understand how public key infrastructure works. There is a private and public key, and someone may use the public key to encrypt data that can only be decrypted with the private key. However ...
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Securing FTP Creds in a Java Open Source API

I've written a basic Java API and source code must be released to a small community for the application to function correctly. The Java API helps developers track data for their running scripts and ...
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0answers
53 views

Whatsapp and Viber information security

Is it possible for my ISP or government to MITM communication that I have made via one of these 2 services(I live in not so developed country) ? I think I am reasonably safe from attacks at transport ...
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0answers
33 views

Use MDC to provide origin authentication for public key encryption?

Why can't we use an manipultation detection code (MDC) to provide origin authentication when using public-key encryption?
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67 views

How do I securely encrypt and store database encryption keys? [duplicate]

I have a database with encrypted information, and want to encrypt each entry with a different key. Then I want to store the encrypted keys in another database. I know I have to encrypt the keys before ...
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2answers
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Is it possible to use S/MIME in the web client of Gmail?

I could not find any options in the web interface of Gmail. All I could find was a Firefox plugin to use S/MIME with Gmail, but it seems to be outdated.