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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2
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1answer
201 views

Encrypting data before sending to SaaS tool and decrypting on browser view

I'd like to send data to a SaaS tool, where the data is stored in the cloud. I'll use Google Analytics as an example, but it applies to any similar service. Google Analytics does not allow you to ...
-2
votes
0answers
68 views

Do banks use anything besides AES encryption? [on hold]

I know that AES only comes in three sizes (128, 192, 256) but does that mean that banks only use these three for their symmetric and asymmetric encryption? Do any of the big banks use bigger key sizes ...
0
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2answers
35 views

Replacing files with infected files on anonymous ftp server

I am creating a new question as i now have another question which was raised from a previous answered question post. What im trying to figure out is would this scenario be possible. I have an ...
-2
votes
0answers
39 views

Why mobile app developers don't encrypt the user data?

I have been wondering why mobile applications don't actually encrypt the user data and only use SSL or certificate pinning? Otherwise MITM attack or tools that help bypass certificate pinning can be ...
74
votes
5answers
11k views

What kinds of encryption are _not_ breakable via Quantum Computers?

There's the recent article NSA seeks to build quantum computer that could crack most types of encryption. Now I'm not surprised by the NSA trying anything1, but what slightly baffles me is the word ...
3
votes
1answer
96 views

Is there readily available encryption algorithms for current computers, that is safe from quantum computers?

Is there readily available encryption algorithms for current computers, that is safe from quantum computers? I know a bunch of currently popular encryption algorithms that are safe from current ...
2
votes
1answer
403 views

Are there any alternatives to EFS for transparently encrypting the contents of a folder in Windows?

EFS is not an option for me because I'm using Windows 7 Home Premium. I am looking for folder encryption, not drive encryption.
7
votes
4answers
333 views

Can govt intercept End to End encrypted Whatsapp communication through the lawful interception?

Since after Whatapp started end to end encryption with an option for users to verify keys, many government security agencies like Indian one red-flagged such use of encryption. Now Yesterday the ...
2
votes
1answer
67 views

Is storing passwords encrypted with GnuPGP on an anonymous FTP server safe?

I would like some advice on a method of storing passwords to a database on my anonymous FTP server. Basically I have login details for a few trusted users to a database server stored in a text file ...
0
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0answers
3 views

Why ecryptfs still remain in mtab? [migrated]

I use ecryptfs for encrypted lxc container container start ok and stop ok But i see even after stop this line /var/container-lxc/face/rootfs.crypt on /var/container-lxc/face/rootfs type ecryptfs ...
0
votes
1answer
376 views

Bitwise cipher Cryptography

I'm doing an online cryptography course. There is a question in which it is given that the encrypted text for; OwBPAAQXAE9UC0FVBQxODgZSCUUMAQwCCApYRBJZBR0LDhoAGApPHQAUAQNZRAJPGwQbDQBDDREKQA== Is ...
0
votes
1answer
27 views

Veracrypt options to protect against multiple versions of an encrypted volume

I'm planning to use rsnapshot to backup a veracrypt volume as it changes. This means I will have multiple versions of the same volume, with slight differences in data. It is my understanding that ...
0
votes
1answer
50 views

What is the best practice to secure an unattended Raspberry Pi?

I'm working on a project which involves mounting a Raspberry Pi on a self-moving vehicle. I'm looking for the best way to encrypt the Pi (entire file-system, swap, etc.), with the minimum possible ...
3
votes
1answer
37 views

OpenSSL's EVP functions, more specifically EVP_SealInit

Reference: https://wiki.openssl.org/index.php/Manual:EVP_SealInit%283%29 I want to securely share a symmetrical key between two endpoints using OpenSSL's EVP interface. Transferring the encrypted ...
4
votes
2answers
96 views

Managing the public keys and certifications of S/MIME protocol

I don’t have any experience in the security field, and I want your help. I want to ensure if the following suggestion is applicable and secure, if it’s not, please give me your suggestion to solve the ...
7
votes
3answers
1k views

What are the disadvantages of using public key cryptography when encrypting files? [duplicate]

I am wanting to encrypt a file with my public key, my friend told me that this is not a good idea but did not explain why. Can someone explain please.
0
votes
0answers
10 views

SQLCipher and PRAGMA key on iOS

I'm a bit confused as to how SQLCipher handles the PRAGMA key provided for encrypting the SQLite database For background: I'm looking at options for encrypting application data at rest. From the ...
1
vote
0answers
28 views

Should the RTP feed from a surveillance camera be protected?

I see a lot of camera system and they're either using RSTP over RTP or just RTP. Most of the times they are on straight HTTP for the login, some will be on HTTPS, but unless forced (which I have ...
4
votes
1answer
37 views

Transport Layer Encryption vs. Application Layer Encryption

Can anyone tell me the key differences between Transport layer encryption and Application layer encryption and outline example use cases where each are most appropriate? The research I have done so ...
2
votes
2answers
428 views

What is the problem with multiple encryption and how do you know if you have decrypted a cipher?

I have 2 questions that are somewhat related: When you try and guess the key in a program (in a brute force way), how does the program know if it got it right and it had deciphered the message (I'm ...
0
votes
1answer
35 views

Samsung SSD 840/850 EVO with DiskCryptor?

Samsung's 840/850 EVO SSDs have hardware full disk encryption feature, however the stock disk management app (Magician) only mentions BitLocker's support. Encrypted Drive feature provided by ...
1
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0answers
68 views

Is this cascading encryption, and is my security weakened as a result?

I'm trying to understand what is, and what is not, considered cascading encryption. All of the posts and conversations I've read over the past few days discourage the practice, including this article. ...
2
votes
3answers
2k views

Centralized local hosted web based password manager

In our company we have more than 100 employers and everyone use several online applications daily. To access all of this sites they need a password which was now stored very insecurely. so I'm ...
3
votes
1answer
100 views
+50

Authenticate tracking device with TCP server

I am building a tracking device and am looking for a secure authentication method to use when the device wants to establish a connection to the server. The server is a TCP server that we open a ...
3
votes
4answers
2k views

For someone who has a key and ciphertext, is it possible to find out what encryption algorithm was used?

For someone who has a key and ciphertext, is it possible to find out what encryption algorithm was used?
-1
votes
0answers
12 views

How can you figure out which encryption was used just by looking at the data? [duplicate]

I have 1500 lines, which were encrypted (by a random encryption method) and then encoded using base64. Let's say I can easily write code to decode the base64 strings. After that I get the encrypted ...
3
votes
1answer
135 views

How is encryption different for Windows yet they are identical?

I right clicked on C:\Users\USERNAME and did advanced -> enable encryption. On one laptop it turned green. The other it shows an icon on the files with a lock. What is the difference between these? ...
2
votes
2answers
93 views

How does an encryption master key work

Apparently the 'secure' cloud-encryption service BoxCryptor supports master keys for encrypted files. Decrypt every file which is accessible by any member of your organisation. How would a ...
2
votes
2answers
72 views

How to know when an OpenSSH rekey occured, and how to trigger one?

I have a twofold question about OpenSSH rekeying. I use OpenSSH 6.4 on the server side and the connection between client and server is a SSH2 connection. The questions: How do I know when a rekey ...
0
votes
1answer
193 views

Filtering Telegram Traffic

I want to filter Telegram Messenger to monitor the network activities (logging) from any platform. I'm wondering if there is any signature I can look into to detect the traffic, maybe a list of server ...
3
votes
1answer
72 views

Security of cellular-connected devices

The EFF Secure Messaging Scorecard lists a number of apps that meet all of its security criteria. So assuming that end-to-end encryption is accessible for the majority of people in countries in which ...
-1
votes
1answer
82 views

CRC-96(ZIP) decryption

Is there a way to decrypt CRC-96 encrypted string? I am testing a web application which stores the password in the database in CRC-96 encrypted format.
7
votes
5answers
184 views

Secure application data transmission via SMS channel

There are mobile banking applications that use SMS channel to communicate with their server. Some of them offer both internet and sms channels which the customer gets to choose from. While there's ...
-5
votes
1answer
70 views

What is AES 256 bit encryption? [closed]

I was looking through some apps to store my passwords in on the App Store when I found one that boasted an "AES 256 bit encryption system". Now that sounds all very good and well, but that doesn't ...
5
votes
3answers
62 views

Asymmetric encryption and signature performed by hand

There are some methods of encryption so easy that you can do them be hand, but is there an easy(ish) method of private & public cryptography and signing that a human can perform it by hand? The ...
5
votes
3answers
83 views

Encrypt Items With Single Key or Use KDF+Salt To Encrypt Each Item?

I'm currently planning the development of a system where extremely sensitive information for individual users would be stored. There are currently two approaches being discussed. In order to make it ...
0
votes
0answers
7 views

Link Layer, E2EE encryption [closed]

Do you know how I can find out more about link layer and E2EE encryption also with related topics. I hove more network books in my library but I could not find any topics about OSI encryption, in ...
2
votes
1answer
28 views

Is EFS FINRA and SEC Acceptable

I'm trying to search in their manual but there is nothing explicit being mentioned as to what type and how encryption should be done. Can I assume that if I use EFS on the entire USER directory that ...
4
votes
1answer
111 views

Bidirectional encrypted server to server communication using TLS

I have 2 Windows servers and would like to set up encrypted communication between them using TLS. I've been reading up on TLS and X.509 certificates and I think I have a reasonable plan, but would ...
0
votes
0answers
43 views

Filelevel encryption - security and stabillity of Encfs 1.8, EXT4 Encryption, and others [closed]

(I am aware of EcryptFS, which does not (easily) suit my usage case - at least not in the case of the way its employed for home directories on Ubuntu - I want something which root can read once ...
0
votes
1answer
21 views

Hashing and signing partial data in payload

I'm hashing and signing part of a payload prior to HTTP Posting from a mobile device to server side. The payload contains of about 7 data elements and only 3 of them are hashed/signed using a private ...
1
vote
1answer
49 views

Client-side encryption using public-key

My situation: Login password from a POST request is left in browser memory in clear text as long as cache is not cleared (manually/closing browser). Connection is HTTPS. Possible Solution: ...
0
votes
0answers
43 views

How does Signal Protocol, used by `whatsapp` Works?

I want to understand the process of The Signal Algorithm, I have google it, but unable to find any good Article or tutorial. I want to understand the basic definition and functionality of The signal ...
1
vote
1answer
80 views

AES step by step

I can't seem to find an AES tutorial that starts from Unicode to Cipher text. All of the tutorials I found starts with 128 bit block already. Also, where do I start or what topics do I have to start ...
3
votes
2answers
114 views

How difficult is it to brute-force Windows EFS encryption?

With EFS I have C:\$USER\ encrypted so all files owned and used by said user are encrypted. If this laptop is stolen, am I correct that they could pull the microsoft user password hashes, crack ...
22
votes
3answers
15k views

Encryption and compression of Data

If we want both encryption and compression during transmission then what will be the most preferable order. Encrypt then compress Compress then encrypt
2
votes
2answers
134 views

number of ciphertext-plaintext pairs needed in double encryption

So I know in single encryption you would simply require at least 1 pair of plaintext-ciphertext, to carry out an exhaustive key search; you continue trying different keys until one is found that ...
1
vote
1answer
94 views

access to mounted luks partition by non-root user

Recently I searched substitute for truecrypt and played a bit with cryptsetup. The steps I did: mkfs -t ext4 /dev/sdb1 sudo cryptsetup open --type luks /dev/sdb1 enc_vol sudo mount ...
0
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0answers
11 views

USB memory stick automatic encryption [migrated]

Is there any commercially available USB drive (memory stick) that will automatically encrypt any file(s) copied to the drive, without needing to install or execute special software on the connected ...
0
votes
1answer
26 views

AES-CTR with PBKDF2 for IV for file archiving at server. Is this ok?

I have tried to grasp enough of encryption/hashing to be able to implement a secure storage for files, server side. Once I have it down to reasonably safe I'll go over it with an expert. There is no ...