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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Does Oracle's GuardedString protect sensitive data against heap or memory dumps?

Oracle's org.identityconnectors.common.security.GuardedString states this in its documentation: The GuardedString class alleviates [the problem that string data is kept in memory as clear text] by ...
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31 views

How do I decrypt this unknown cipher text? [duplicate]

I got this unknow cipher text. Can you solve this? This looks like encoded PHP with base64/str_rot13/gzinflate eval. nI31RZG+Rxb1RZGzRMfsOdNql2K9RsesRLDVOdNqnLWtOdNqRtJtRtm1RZG8OdNrmxb1R/...
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1answer
42 views

Decrypting keys at the software application level [on hold]

Does anyone know what the most common method of decrypting data is? I.e., if something is hashed and not decrypted at the firewall, how is it usually decrypted within a system? Is it integrated into ...
3
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1answer
25 views

Is using PGP/MIME or PGP Inline more secure?

Using Enigmail for Thunderbird, the setup wizard automatically sets itself to PGP/MIME and also disables HTML formatting. I am looking for security and have no idea which to use, though I do know HTML ...
3
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2answers
61 views

How to secure communications between a web front-end and the web server when/where the HTTPS protocol is compromised?

A country in the Central Asia has issued a law enforcing all the ISPs to decrypt the transit HTTPS traffic and encrypt it with a special certificate issued by the government. Every client is to ...
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2answers
47 views

Asymmetric key encryption that can have a public decryption key, but encryption key cannot be computed from that [duplicate]

Is there a way where I can distribute a public decryption key, but the encryption key cannot be computed from that key, so that anyone who reads one of my encrypted message, he/she can be quite sure ...
4
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3answers
534 views

Is sending a password encrypted or as SHA1 any safer than clear text?

It seems to me that if an attacker can intercept my login request (sent with HTTP POST), then he can replay it later, no matter whether I try obfuscate it or not. What am I missing?
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2answers
44 views

How would I brute-force a Bitlocker recovery key?

I have imaged a hard disk and used passware, but to no avail - it says Encryption key External key, and not the actual key. How do you think I would go about brute forcing it? Lets assume I had ...
3
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0answers
29 views

Laptop Encryption variables

If you are running such an operating system as Ubuntu among others, you would of seen that it gives you the polite option to encrypt your Home directory OR Whole hard drive with a robust AES 256bit ...
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0answers
5 views

GEA3 direction clarification

GEA3 (and 4) stands for GPRS Encryption Algorithm. It's specified in 3GPP TS 55.216 (at least used to, until some idiot forced them to hide it because of "export restrictions" or some crap like that). ...
0
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6 views

Where partially homomorphic encryption schemes like BGN are used?

Schemes like Boneh, Goh, and Nissim are interesting, because of support of polynomially many additions and one multiplication. The algorithms are indeed simple https://eprint.iacr.org/2010/182.pdf ...
1
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1answer
37 views

Why aren't there FIPS level 4 devices on the market?

While searching for a secure USB to use, I came across the Aegis secure key, which has FIPS Level 3 (140-2) security. I believe that it's the securest flash drive on the market. I found that the ...
2
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0answers
24 views

Recommended Crypto Security Setup (Implemented Algorithms)?

Firstly I'm not a crypto expert, however I know how to use algorithms that other people have defined before in practical usages, that is, as long as they live up to their promises. The thing is that ...
6
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0answers
52 views

Can I use disk encryption and track my device at the same time, in case it's stolen or lost?

I would like to encrypt a single user profile but have been told EFS isn't the solution. I have a laptop that I leave in my bag and use for work and private purposes. I want to secure data in case my ...
2
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5answers
158 views

How secure is a password protected file?

I have a password-protected excel file that stores other personal passwords. Obviously there have been a number of ways to crack the password. community.spiceworks.com Where do you guys store ...
0
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4answers
167 views

Encrypting text data by replacing characters?

I have been thinking on this method but did not really get into it because I thought it was stupid to do for some reason, maybe because I've never heard of it and it's pretty obvious. But today I got ...
3
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1answer
60 views

Question about AES-CBC IVs

I'm writing a Java program that encrypts strings with AES-CBC encryption. (Eventually I'm going to add steganography functions too). As you are well aware, CBC needs an IV in order to encrypt the ...
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0answers
61 views

How to safely store/process secret key for JWT

After reading this: http://stackoverflow.com/questions/30089604/jwt-whats-a-good-secret-key-and-how-to-store-it-in-an-node-js-express-app, on how to store "secret key" to assign JWT tokens. I had ...
1
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2answers
56 views

Key-exchange over the network with more than two peers

Me and my team is developing a multiplayer videogame with a Client/Server-Topology. This secures the match from clients who have the intention to cheat because of server authority but still allows the ...
4
votes
2answers
198 views

How to decrypt the below encrypted messages? [on hold]

My friend was experimenting with the encryption methods (self-made) to encrypt text using ASCII map. He wanted to try this idea whether this encryption can be broken and so shared an encrypted text ...
0
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0answers
15 views

How can I create many-to-one keys in Doctrine/Zend/PHP?

I'm using Zend with Doctrine 2 to store data in a database. For a given user, I encrypt the data with a randomly-generated key specific to that user, and encrypt the key with that user's password ...
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0answers
31 views

Encrypting the data in C# using Java generated RSA key (public) [closed]

Need urgent help on how to encrypt the data in C# by using JAVA generated RSA public key. PFB the information to be used as reference. Public Key: ...
0
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1answer
38 views

PDF encryption anomaly; version 1.5 using AES

I'm not sure if this is the correct forum to ask this question so please accept my apologies in advance if this is the wrong place. (I have already posted this in the Programmers section but I've yet ...
0
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1answer
26 views

Is it possible using a file level encryption in addition to TDE in Microsoft SharePoint?

For Microsoft SharePoint, TDE is a great encryption solution to keep databases encrypted. I've tried to find a possible solution to encrypt the files once more using an other level of encryption on ...
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39 views

How do I set up confidentiality on files after download in Microsoft SharePoint

I'm currently working to setup a solution for a SharePoint server. Looking further into the possibilities for confidentiality on files after download I found a dead-end about what is used. My company ...
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35 views

What encryption does CyberRoam use for Registry entries? [closed]

I am unable to guess the type of encryption Windows Registry uses to store CyberRoam password, for example 1466151978000123000091000040000139000203000019 is some encrypted value for 6 digit password.
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19 views

What do I need to do in order to use Enigmail on more than one PC? [migrated]

I've already imported my keys from pc1 to pc2, but on pc2 I always get this error message: Error - no matching private/secret key found to decrypt message; click on 'Details' button for more ...
0
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1answer
59 views

ssh-keygen: How is the seed generated?

How is the seed for ssh-keygen generated? I expect it will take information from /dev/random and request supplementation with system activity if we have insufficient random bits. An Instructor ...
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0answers
25 views

ldaps on Debian Jessie with let's encrypt certificate [migrated]

I'm already struggling for a while to set up an LDAP-Server on debian Jessie with enabled TLS. I'm new to the topic, so please show me my mistakes. I started by installing an reconfiguring slapd apt-...
0
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1answer
73 views

Vicious circle with certificates - how to trust the server cert?

I have a java app on Android that needs to be able to communicate with a web server over ssl using an client x509 certificate (for encryption negotiation) - the private key is in the java keystore ...
0
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1answer
57 views

Securing data passed between two sites via a browser

I need to pass some data securely from one web site to another via a browser. A user visits site A and clicks a link there which takes him to site B; this could be just a link which would produce GET ...
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LENGTH Parameter in the EEA2 AES-128 of LTE [migrated]

In the EEA2 option for encryption in LTE the AES-128 algorithm is mechanized. There, the nonce used in the CTR Mode is a 128-bit value. The first 64-bits are covered by a COUNTER, a BEARER, a ...
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1answer
86 views

How to detect if a crack is cracked only or cracked and binded with other executable? [closed]

Viruses are often spread using cracks. I want a quick and dirty way to know if the cracks are not binded with other executables The process goes like this. The program is installed using the ...
8
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1answer
322 views

How can WhatsApp recover messages sent to a damaged phone?

My mom has an Android phone that fell in the water for a couple of seconds, around 16:30. She managed to disassemble the phone and turn it off. We both share a group that is end-to-end encrypted (all ...
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4answers
203 views

Roll your own encryption - with a twist

I am familiar with Schneier's Law: Any person can invent a security system so clever that he or she can't imagine a way of breaking it. I have read the many posts on this exchange littered with ...
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1answer
86 views

Ways to generate symmetric and asymmetric keys

We are using Beaglebone Black based custom board, and want to use hybrid encryption for encrypting firmware file, i.e. symmetric for encryption big firmware file and asymmetric for encrypting ...
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0answers
71 views

Security of an IoT network using AES (LoRaWAN)

I am studying the security of LoRaWAN. Here is a simplified architecture of the network: As you can see, there are two keys: one for the network security (no mitm, no modificatiof the messages). ...
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0answers
18 views

Should SHA-1 be used with PKCS #1?

I came across this excellent question and answer: Should SHA-1 be used with RSA-OAEP but it only covers RSA-OAEP. RSA-OAEP is not the only place in PKCS #1 where a hash function is used. Should we ...
0
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2answers
118 views

I want to encrypt certain entries in a database. Is this a good plan?

I'm working on a web app and want to offer the users the option to "encrypt" their account. This wouldn't encrypt everything related to them in the database. Just certain critical fields. I've ...
1
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1answer
49 views

Offline Javascript and encrypted secret

When using Javascript online with the server, The server can provide a unique Key and Initialization vector for use in AES-CBC available in Webcrypto API. Each user has key allocated to them. The ...
2
votes
1answer
40 views

Telegram Visibility Into Secret Chat VS Plaintext

Background Telegram Messenger offers an "End-to-End" encrypted channel, with their home brewed MTProto, called Secret Chat. They have "Link Previews" by default in all modes, but Secret Chats, in ...
2
votes
1answer
82 views

How to find out if my MBR has Evil Maid code?

If Truecrypt Bootloader will remain visually the same, how can I find out if it was infected?