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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What should I do when I need to store passwords for usage in 3rd party softwrae?

I have a desktop WPF application which authenticates with Dynamics CRM 2011. I ask for the username and password of the user and use them to connect to Dynamics CRM 2011 using ...
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1answer
22 views

What is the point to the IPEK in DUKPT?

I'm trying to understand the DUKPT (Derived Unique Key Per Transaction) system used for PIN devices, but I'm getting hung up on the IPEK. This blog post has an image where the sequence is: BDK ...
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3answers
109 views

How are private keys stored on disk?

I have a public and secret key pair in my .ssh folder. How is the secret key being stored on disk? What I mean is .. Is it possible for someone to hack into my computer, steal the secret key and use ...
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1answer
55 views

Field-level encryption vs disk encryption for PCI compliance

We are in the process of setting up a PCI compliant server (with Firehost's help). We are using MongoDB as our primary database. I am having some concerns about the encryption, though. Are there any ...
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2answers
108 views

Encrypting files in .NET?

I am in a situation where I would like to encrypt audio and text files for an application I am working on. I did some looking around and from what I have seen the Rijndal encryption algorithm would ...
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2answers
121 views

Keepass Dictionary Attack Protection Strategy

Though pretty interested, I'm everything but an expert in Information Security, please redirect me to any helpful resources if my question is stupid or correct me if my assumptions are wrong. When ...
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1answer
37 views

How to decrypt javascript code extracted from PDF

I analyzed PDF, and extract javascript code. But javascript code is encrypted. I can't decrypt it. Please advise me. javascript code ...
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1answer
20 views

Encrypting multiple blocks with an asymmetric scheme

I have a general question how asymmetric schemes are usually implemented. Typically, there is a parameter in an asymmetric scheme which limits the message length. For example the modulus in RSA. I ...
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0answers
46 views

Storing private messages in a database

I am creating a portal where users can send private messages (PMs) for a very large audience. So I want to encrypt the messages and store them in the database. But I do not want to ask the users for ...
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1answer
57 views

Why is GPG file encryption so much slower than other AES implementations?

Correct me if I'm wrong: When encrypting a file, GPG creates a one-off AES encryption key and encrypts that key using RSA. This is supposedly to take advantage of AES's superior performance when ...
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1answer
56 views

Storing encryption keys on a server using Node.js and MySQL

I am writing a web backend/api for an iOS application using Node.js and MySQL. In my database I have a table for posts. I would like the posts content to be encrypted. Let's say I'm using this AES for ...
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6answers
993 views

What needs to happen for email encryption to go mainstream? [closed]

PGP has been around for almost 20 years, but email encryption is not used by most 'regular people'. At the moment, with Snowden's NSA revelations (which should not be a huge surprise to anyone), the ...
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2answers
76 views

How do password suites store and encrypt their metadata and prevent attacks based on that knowledge?

If someone uses a password manager and tries to organize the credentials well, doesn't that make attacks easier? Let's assume an attacker has the encrypted credentials available for offline attacks, ...
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1answer
55 views

Cracking encrypted SQB databases

I've recovered a .SQB SQL database backup file from a backup server and do not have the password. As I do not have the password available to me, I'm looking to determine what type of encryption is ...
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0answers
32 views

Pattern extraction [closed]

I got a DB (152.4 million users) (My own fake one).I did not hash the passwords, but encrypted them. So anyone that uses the same password, lets say, "123456", will have the same encryption/cipherkey. ...
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0answers
123 views

Decrypt Passwords based on using a user's password

I am creating a database to store our client's information at work (a heritage center specializing in DNA based genealogy). Once the results of a test come back, we have people that use the ...
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2answers
38 views

When using PGP/GPG, is it safe to use the same public/private key pair on multiple computers for the same person?

It seems somewhat unsafe to move the private portion of one's key around to multiple machines...but it also seems odd to have multiple identities floating around.
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1answer
24 views

Save application autostart login token on computer

I need to login desktop application while autostart on server (like skype does). What is the best practice to save authentication token (password)? Should I use something like RSA encryption (which ...
3
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1answer
55 views

How to minimize security risk when having to work with decrypted (plain text) passwords due to 3rd party API design

I'm developing an application (C#) for Microsoft SharePoint platform that uses SQL Server's (2008 R2) Remote BLOB Storage (RBS) technology. To accomplish certain client-side tasks, I must obtain ...
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3answers
100 views

Decrypting Engima messages

Not really computer related, but I hope someone has the answer. How do people decode messages from an Enigma machine? I understand that if you knew the rotors, rotor positions, and plugboard the ...
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1answer
84 views

Would encryption bypass some firewall rules?

Would an encrypted connection be able to bypass a firewall? A firewall is working on layer 1-4 of OSI model, the encryption and decryption is done in presentation layer (layer 7 of the OSI model). Can ...
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4answers
229 views

Advantages of one time pad

I always hear that one time pad'ing something is so great because you won't know if you've successfully decrypted the data. I understand the idea that you can XOR any bits just the same as any other ...
0
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2answers
97 views

Secure Way of Encrypting Your Bash Shell Script [duplicate]

How can I encrypt my bash shell script on Linux server The shell script contain credentials of other servers for remote access. The problem is I do not want others with same level of access to view ...
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3answers
512 views

Encrypting passwords?

I am planning on creating a text file to store my passwords, so I only need to remember 1 password (at the moment, I have about 20 long/complex passwords in my mind, and am worried that I might forget ...
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0answers
57 views

Ability to decrypt intercepted encrypted SSL traffic when having private key [duplicate]

I was reading some blog posts about the Heartbleed vulnerability (who's not nowadays) and was thinking about the following. Situation A If I would use a regular SSL/TLS connection the handshake will ...
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1answer
126 views

are there serious weaknesses in this free password management system?

I want to protect my passwords for free and store them on a machine that might get stolen but have the passwords very securely backed-up in the cloud, again for free, and minimize the total lifetime ...
2
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1answer
96 views

Encrypt Android app data and send to web service

I want to develop an Android app that may contain sensitive personally identifying information (national ID number, phone number, etc.) among other data that will be stored in an Android phone. Let's ...
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0answers
68 views

HIPAA compliant blob storage architecture

There is a task to design a system to store sensitive data securely (should be HIPAA compliant in the future). It's just a draft - this will not be used in production in a foreseeable future. I have a ...
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2answers
132 views

How to encrypt entire HDD without any password prompts?

Before you dismiss this as silly, let me explain :) The only purpose of this encryption is to make the data inaccessible if the drive breaks down and I want to send it off for warranty replacement. ...
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1answer
54 views

Does TRESOR protect against attacks like HeartBleed

I was wondering if the linux TRESOR module (http://en.wikipedia.org/wiki/TRESOR) would protect a webserver against HeartBleed or other similar attacks.
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4answers
2k views

Heartbleed: OpenSSL v 0.9.8o and OpenVPN v 2.1.3 Reporting Vulnerable

According to the OpenSSL project the version in use on a server we control is not vulnerable: 0.9.8o. According to OpenVPN v 2.1.3 is also not vulnerable (also in use). These are running on Debian ...
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2answers
71 views

Doesn't the same string encrypted with the same key generate the same encrypted value?

This is my page and class to encrypt the string entered and saved in database. Each time, the Key__c is the same, as I take it from custom settings. But when I enter abc and save two times, the ...
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2answers
26 views

Why is 3DES not used to store passwords?

I'm sure its obvious, but I was wondering, what is the primary reason 3DES encryption is not used for storing passwords in the database? My understanding is that 3DES is a strong encryption? So I ...
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1answer
77 views

Secure sensitive data but still allow admin access

I need to store some sensitive user data in an SQL database and am looking into how to best secure it. From what I've read here, the obvious way to do this would be to encrypt the data using the ...
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1answer
46 views

How does the Perspective addon work?

I've just installed the Perspetive addon in firefox. When I'm vistit, for example google, Perspective says the following message: Warning: Perspectives has NOT seen this certificate consistently. ...
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2answers
63 views

Are SSL encrypted communications through a company network safe?

If I'm using Skype, Facebook, or another type of communication at my work, can the network administrator see my Skype and Facebook conversations, although its encrypted with SSL? I found this text: ...
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3answers
174 views

Is it safe to back up passwords to the “cloud”

I have a small Truecrypt volume that contains just my password data (using Bruce Schneier's Password Safe application). I'd like an offsite, secure, backup of that Truecrypt volume. Currently, I am ...
0
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1answer
48 views

is there any 100% secure way for form authentication and sending information from client side to server side over internet pages? [closed]

i think for acquiring 100 % secure data transfer between forms on client side and c# code on server side ? my tools : i use IIS as my server and i wonder how can i reach for latest security that ...
2
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1answer
56 views

Safety while ciphering data

Say I wanted to encrypt some sensitive information with a symmetric algorithm using a program on a computer. Is it possible that a hacker could retrieve the data,salt, iteration, cipher, keysize while ...
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1answer
57 views

Recommended symmetric key usage period

Let's assume that there are two nodes A and B connected over a network. Both have a single pre-shared symmetric key (e.g., AES-128) and exchange messages. What is the recommended period, until the ...
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2answers
106 views

How could police identify digital contraband and charge someone if it's encrypted with keys?

For example, say I am transferring heavily-encrypted DVD/Blu-ray movies/game copies over the internet. However, I am using double or (+) encryption with keys required to decrypt the file using an ...
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1answer
50 views

How can an ISP throttle encrypted connections? [closed]

I have had experience with an ISP that slows down all encrypted connections (down to an average 20-35 KBps) I was wondering if a) this is legal b)how can they do it and c) is there a way to bypass it. ...
1
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1answer
56 views

What is default mode for AES encryption [closed]

What will be the default mode for AES encryption if we don't use any specific mode like ECB, CBC, OFB, CTR, etc. and just carry out the encryption without specifying any AES encryption mode.
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1answer
45 views

Multiple user encryption-key store

Let's say I have an application that accesses an encrypted datastore, and I want the admins to be able to unlock the datastore upon application startup (and then the application will have access to ...
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2answers
93 views

How can I analyze password recovery tokens?

All websites that support authenticated user interactions have a password recovery feature. Usually they will email the password reset link through which you can easily recover your account by typing ...
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5answers
3k views

How does a country block its citizens from accessing a site?

Following Turkey's recent social site blocks, I am wondering how can you efficiently accomplish that as a country. Similar for a big company. Blocking IPs → easy to circumvent, (proxys, tunnels, ...
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3answers
81 views

Why is symmetric encryption still used? [duplicate]

In symmetric encryption, the key responsibility is for the two parties involved (sender and receiver). Hence, it can be more vulnerable, and can cause accountability issue in cases ofthe key is ...
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0answers
106 views

An attacker got a few 128bit TrueCrypt keys from a RAM analysis. What can he do?

I'm trying to simulate a possible attack scenario for my studies. I've got a image, which has a encrypted disk, encrypted by TrueCrypt (confirmed). TrueCrypt is installed on the image itself too. ...
0
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3answers
95 views

Is it possible to encrypt a file so that it can not be brute forced? [closed]

Is there any program or method that allows encryption that can not be brute forced or is it just that any encrypted file can be decrypted by brute force?
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1answer
61 views

Get PGP Private Key from RAM analysis RSAKeyFind

For an experiment, I'm trying to open a 2048-bit RSA encrypted mail on a image. Using this fresh image, I made a memory dump and analysed the dump for RSA keys. Now, several RSA keys have been ...