0
votes
1answer
23 views

Is it possible to stream live audio/video safe from duplication/copying?

What I'd like to do is play an audio file exactly once and then it should not be possible to play it again. Is there such a file format or function? The scenarios I had was 1) Some famous music group ...
1
vote
0answers
44 views

CryptoLocker Ransomware. Can you recover files? [duplicate]

Today one of our PCs got infected with nasty CryptoLocker trojan crap. The PC was a Windows XP machine with up-to-date NOD32 a/v. As you probably know the virus encrypts your file with an 2048 bit ...
2
votes
1answer
3k views

SSHD HMAC Configuration

I have read and understand the posting from here, Secure Configuration of Ciphers/MACs/Kex available in SSH. However, I would like to know what the /etc/sshd_config configuration would look like ...
5
votes
1answer
1k views

How can I use GnuPG with ECDSA keys?

I'd like to generate an ECDSA (rather than RSA, DSA, or ElGamal) key using GnuPG, and use it as I might otherwise use an OpenPGP-compatible master key. I've read that gpg2has support for ECDSA keys, ...
1
vote
1answer
600 views

Openssl decrypt from encrypted text from command issue

I am using following command to decrypt an base64 string. openssl enc -in ciphertext -out binarytext -d -a openssl rsautl -decrypt -in binarytext -out plaintext -inkey private.pem I am facing an ...
5
votes
1answer
730 views

Vim no longer prompts for encryption key when reading encrypted file; why not, and how can I get this restored?

I recently began using Vim to encrypt text files (by using the :X command and entering an encryption key at the prompt). As documented, Vim then prompts for that key when I reopen the file and ...
1
vote
1answer
198 views

How to encrypt email with recipient's key?

I need to send an encrypted email to someone who has published his key. He doesn't have mine, so instead of encrypting the email with my private key as usual, I think I have to use his public key. ...
1
vote
1answer
336 views

How many guesses per second are possible against an encrypted disk? [closed]

I understand that guesses per second depends on the hardware and the encryption algorithm, so I don't expect an absolute number as answer. For example, with an average machine you can make a lot ...
0
votes
1answer
36 views

Creating and evaluating digital signed signatures for authentication etc

This question is triggered by an email from Microsoft this morning about a security bulletin. It started with -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 and ended with a PGP signature. I've ...
1
vote
1answer
220 views

Is Data Object on openPGP smartcard v2 encrypted?

Currently I thinking about on-the-fly disk encryption using Truecrypt/dmcrypt LUKS with key stored on smartcard. I would like to use openPGP v2 smart card, respectively GPF Cryptostick which is based ...
4
votes
3answers
515 views

Noisy RAM? Or noisy power supply?

I was developing a seekable implementation of AES and when I ran it; a high pitched noise started coming from inside my computer. I know it was NOT the hard drive because there was hardly any hard ...
1
vote
2answers
2k views

Which symmetric key algorithm does SSL use?

I understand that thru SSL, the browser gets public key of the secured website and thru public key encryption rsa algorithm, these 2 establish session key and then continue communication thru some ...
3
votes
1answer
4k views

What Algorithm does Microsoft Office 2010 use for Encryption?

Does it use the standard AES 128bit key for encryption? I've searched a lot on Google, but I still haven't found the algorithm is uses for encrypting. I'm encrypting a PowerPoint file.
0
votes
2answers
191 views

Best solution top keep data secure

What is the simplest and most elegant way of storing a small amount of data in a reasonably secure way? I am not looking for ridiculous levels of advanced encryption (AES-256 is more than enough) and ...
0
votes
1answer
1k views

Decrypting Windows XP encrypted files from an old disk

I had an old Windows XP machine with an encrypted directory. When moving to a new Win7 machine I connected the old disk as a slave in the new machine, and hence cannot access the encrypted files. ...
1
vote
1answer
369 views

Isn't a hidden volume used when encrypting a drive with TrueCrypt detectable?

I don't purport to be an expert on encryption (or even TrueCrypt specifically), but I have used TrueCrypt for a number of years and have found it to be nothing short of invaluable for securing data. ...
4
votes
3answers
2k views

Decrypt files encrypted with TrueCrypt

I have a usb pen memory crypted with TrueCrypt. Is there a way to decrypt ( without TrueCrypt ) files encrypted with TrueCrypt in linux ?
4
votes
4answers
2k views

What happens if the private key of a Certificate Authority(CA) like Verisign is leaked?

I was just wondering what will happen if the private key of a CA is leaked? Won't it be then possible to make fake certificates for any other website?
2
votes
1answer
659 views

Crypto-Analysis of keylogger logs and config file. Possible?

Is there any way to break the encryption on an unidentified file? The files in question are the config and log files from Ardamax keylogger. These files date back to 2008. I searched everywhere, ...
0
votes
1answer
136 views

Linux cryptography strength outside USA?

Question: The USA forbids the export of secure cryptography. NSAKEY has already been discovered in the Windows cryptograhic API. Since the Linux-Kernel is hosted in the USA, how secure is its ...
1
vote
3answers
212 views

Does re-encryption tampers the original encryption?

I usually use AxCrypt to encrypt my documents. For some documents that I want to store online, being a paranoid, I re-encrypt using PGP. I want to know whether re-encryption does affect the previous ...