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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1answer
24 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
15 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 ...
1
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0answers
17 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 ...
1
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0answers
16 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 ...
1
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0answers
12 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 ...
16
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6answers
933 views

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

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 ...
0
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2answers
67 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, ...
1
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1answer
53 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 ...
1
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0answers
31 views

Pattern extraction [on hold]

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. ...
3
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0answers
99 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 ...
2
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2answers
35 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
20 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
49 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 ...
1
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3answers
97 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 ...
0
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1answer
82 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 ...
1
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4answers
222 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
72 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 ...
3
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3answers
496 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 ...
1
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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 ...
0
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1answer
115 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
81 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 ...
2
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0answers
61 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 ...
2
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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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0answers
21 views

What are some of the threat models that affect key mangement? [closed]

I am currently trying to to conduct some research into traditional key management and how we can apply these techniques to use them in the cloud. What are some base threat models I should be trying ...
2
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1answer
53 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
1k 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 ...
0
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2answers
68 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
23 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
44 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
61 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
170 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 ...
4
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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
103 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
47 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
53 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.
0
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1answer
42 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
91 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 ...
43
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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, ...
0
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3answers
79 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
103 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
94 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?
0
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1answer
57 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 ...
0
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1answer
83 views

Why are cryptographic algorithms implemented in the data-link layer in wireless networks?

Could someone please tell me why cryptographic algorithms are placed in the data-link layer for wireless networks?
1
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3answers
103 views

Protecting form post values when on https

I am dealing with a multi-step form, and I need to pass information from step 1 to step 2, then from step 2 to step 3, and so on. Step 1 contains a membership number and ID number entry, as well as ...
2
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2answers
160 views

What can I do with private 128 bit AES Keys?

For my studies, I am required to do an investigation on a fictional criminal VMWare image. The image is suspected of participating in DDoS attacks and other illegal activities. On this PC TrueCrypt is ...
0
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1answer
171 views

Full disk encryption for server running virtual machines

I have a question about how to properly set up full disk encryption on a server running virtual machines. My setup is Windows 2012 with 2 VM's(Hyper-V) on it. I was looking into using Becrypt for ...
3
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1answer
119 views

Should I encrypt data sent via Android intent?

I want to develop two Android apps that will communicate via intents (on the same device). When the two apps transfer confidential data, should they encrypt it? Or does the Android OS guarantee (or ...