The cryptography tag has no wiki summary.
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1answer
19 views
per-host-pair cryptographic keys on a network
Got a homework question here that I have been staring at for a while. I am being asked how many keys will exist in a network of 'n' number of nodes with keys being distributed on a per-host-pair ...
0
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1answer
29 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
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1answer
72 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 ...
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2answers
115 views
Encrypt a file without common tools [closed]
I am guessing this probably has a really long answer, so feel free to give a little explanation, with a link to a helpful article, tutorial or w.e
How can I encrypt a file without using one of those ...
3
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1answer
106 views
Windows CryptoAPI store?
I just discovered that windows can store certificates and keys that an application uses in a 'crypto store'.
I would like to know how secure the store is? If I select for example high security and ...
0
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1answer
53 views
Disabling or removing a crypto partition
I accidentally created a crypto partition on a Debian server I recently installed.
When I reboot the server I have to enter the passphrase to manually get the server into the right runlevel.
Is ...
2
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3answers
270 views
protecting Dropbox files - Dropbox & encryption
I'm using Dropbox to sync files. There's a big disadvantage that files are stored somewhere unencrypted. I'd like to encrypt and decrypt them on the client, but have no clue how to do it.
Tried ...
1
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2answers
382 views
Public key in hex format, conversion to base64
Hi I'm new to cryptogragraphy and have no idea how to do this. So i get a public key from a Putty session and it looks like this:
...
0
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0answers
33 views
How to write a function that splits the DES key in two halves [closed]
I am working on the DES (Data Encryption Standard ) algorithm in Cryptography as a part of which I have to write a 'C' code in linux that splits the DES key into two halves as per initial permutation ...
2
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3answers
436 views
How difficult is it to crack HTTPS? [closed]
I'll be using a computer at a foreign country. Suppose the government is trying to figure out my password, would I be able to protect my password using HTTPS to log into GMail, or my company ...
1
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0answers
19 views
Custom Rule Sets in JohnTheRipper
I'm trying to create a custom rule set to do hash cracking. I have a SHA1 hash and a rule set that was enforced to create the password.
The password must be of the form,
6-8 characters
Every other ...
4
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3answers
228 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 ...
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1answer
109 views
How to determine if zip is encrypted by AES
I have to determine encryption method of ZIP files I'm receiving.
Mostly I'm interested to know if AES was used or not...
Any idea ?
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2answers
341 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 ...
1
vote
1answer
1k 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
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2answers
145 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 ...
2
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1answer
524 views
Using openssl command line tool to encrypt/decrypt data, DES ECB
How can I create a random 64 bit key for DEC ECB encryption/decryption, and then use the same key for encryption/decryption many times? All this must be done using openssl command line tool.
In all ...
0
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1answer
436 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.
...
0
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1answer
242 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. ...
0
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1answer
110 views
What is the minimum time-period for selecting a new AES?
After how many years submissions are accepted for a new AES? Few months back I heard the news of attacks on AES and it is suggested that AES-128 bit is more secure than AES-256-bit.
1
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2answers
653 views
Missing Cryptographic Service on Windows XP Pro SP3
I have a single Windows XP Pro SP3 computer that is having problems installing updates from a WSUS server. The entries in the WindowsUpdate.log point to a problem with the Cryptographic service on ...
1
vote
1answer
359 views
How to force gpg2 to use expired key?
$ gpg -ear XXXXXXX
gpg: XXXXXXXX: skipped: unusable public key
$ gpg --debug-ignore-expiration -ear XXXXXXXX
gpg: Invalid option "--debug-ignore-expiration"
How to encrypt? There are no updates for ...
9
votes
4answers
3k views
Can other people on an encrypted Wi-Fi AP see what you're doing?
If you connect to an open, unencrypted Wi-Fi access point, everything you do can be captured by other people within range.
If you connect to an encrypted point, then people nearby can intercept what ...
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2answers
579 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 ?
3
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4answers
558 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?
7
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3answers
9k views
How can I get a list of installed certificates on Windows?
Subject pretty much says it all. I know I have some certs installed on my Windows 7 machine, how can I see what they are, the nicknames they are known by, and browse detailed information (such as ...
2
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1answer
297 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
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1answer
114 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 ...
7
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3answers
866 views
Steganography software
Do you know some good (better if FOSS and cross-platform) steganography software that runs on GNU/Linux?
The features I'm searching are:
steganography software (better if FOSS and cross-platform)
...
1
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3answers
173 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 ...
2
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3answers
3k views
How do I create an RSA public\private key pair in Windows?
How do I create RSA public\private key pair file in Windows?
1
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1answer
191 views
Blum Blum Shub PRG
What is the reason behind the fact that the BBS generator only outputs the n least significant bits or the parity bit for each Xn it produces internally? That is, if it outputs the full Xn's that it ...
59
votes
3answers
14k views
What is randomart produced by ssh-keygen?
When you generate a key, you get "randomart" from newer versions of OpenSSH. I am unable to find an explanation of why, and what I'm supposed to use it for.
Generating public/private rsa key pair.
...
