Linked Questions

0
votes
2answers
1k views

Improved Caesar cipher – secured? [closed]

First let me emphasize that I know nothing about encryption and maybe my question is completely wrong from encryption point of view. Since I must use a simple substitution for a technical reason and ...
0
votes
1answer
457 views

What's the best way to store the passwords? [closed]

What is the best way of storing my passwords? Which storage is considered the safest one? How safe/unsafe is to store passwords in the local MySQL database?
-8
votes
5answers
264 views

Is SSL more secure than encoding?

I am writing a client / server program pair. I have established my own protocol and am communicating with TCP. Presently, when the client messages the server, it adds 42 to each byte (looping, 127 + 1 ...
0
votes
1answer
1k views

Privacy of web surfing by Free gate

I am connected to the internet in the university where I don't want the administrator or any organization to find out some of the websites and contents I check in them. I'm afraid that they might ...
1
vote
1answer
1k views

Using AES encryption to generate MAC (and provide authentication/integrity)

Ignoring that there are far better and more standard approaches to providing authentication and integrity guarantees, what (if any) weaknesses would a system as outlined below that relies on AES (AES/...
0
votes
3answers
162 views

DTLS vs direct use of AES. What are the threats unique for direct use of AES instead of DTLS?

For regular traffic in mesh network (between Internet of Thing devices) customer decided to use one of two options: DTLS PSK ciphersuite - DTLS based on pre-shared symmetric key or direct use of AES -...
-1
votes
1answer
859 views

Checksum for authentication - is it reliable?

I've just made the prototype for my new secure password-based authentication method, but there are several doubts about chosen size of password and alphabet. The method is simple - user calculates the ...
-5
votes
2answers
234 views

Is this Python program secure?

Note: I'm new to information security practices so feel free to point out anything I could be doing better. Situation : I'm currently creating an encryption system for instant messaging and I want to ...
-2
votes
1answer
606 views

Is rolling your own network protocol insecure? [closed]

By now, everyone on here should know that rolling your own crypto is bad. But what's about rolling your own (encryption supporting) network protocol? I'm working on an open-source project (by now it'...
3
votes
1answer
320 views

How to fix this broken crypto protocol?

I am considering a protocol where you upload a one time pad to a server, using public key encryption and then the result (using the pad) is sent back in plaintext: Alice uses Bobs RSA public key to ...
1
vote
2answers
150 views

Homebrewing something like SSL

So me and eight other friends have founded a "company" (not official, we just like calling ourselves that) named sDev and we are making a strategy game. We are aged 16-17 and have about 3-5 years of ...
2
votes
2answers
368 views

Bruteforcing hardware-encrypted SSD

Can you bruteforce a hardware-encrypted SSD drive? I mean recovering the password needed to unlock the drive. Is there any software could do this? Here the focus is the software that could do the job....
-2
votes
3answers
349 views

AES 256 implementation [closed]

I attempt to estimate the coding requirements and memory size required for an embedded development of AES 256. It seems to be well below 25K lines of code and well below 4MB requirement for memory. I ...
2
votes
1answer
349 views

How does limiting the number of results from a SQL query help?

This highly upvoted answer asserts that as a protection against SQL injection, one should always use bound parameters and limit how many results get returned (emphasis mine) Obviously, the advice ...
0
votes
1answer
126 views

Is this strategy end 2 end encryption and secure?

I'm passing sensitive financial data to a payment processor online via cloud functions and would like your expert opinions, please. The workflow is as follows: A customer indicates they want to ...

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