Collaborate Disseminate
Reading other posts like this one give me the impression that the iv can be retrieved from an openssl enc output, and indeed, I see that under one circumstance, it works:
# These two commands print the same salt, key, and iv
openssl enc -a… Continue reading Can’t recover IV from openssl output
I’m writing an application that needs to deterministically encrypt some data (where two equal ciphertexts will produce two equal plaintexts; this is acceptable and in fact desirable for this application), and I’d like to stay as far away f… Continue reading Can I HMAC my plaintext for use as a NACL SecretBox nonce?
TL;DR
If we encrypt a message with an IV, do we need to store this specific IV somewhere to ensure that we’re able to decrypt the message later?
There isn’t much I know about this. From my understanding, IVs are a way of creating differe… Continue reading Is the original IV mandatory to decrypt an encrypted message?
We all hear often about the reused key issue in block cipher.
For example, for a picture being encrypted by the electronic codebook mode, we will still see the shape of the picture.
https://images.app.goo.gl/Hw8c9xDHcmi7nCNg6
So that is wh… Continue reading Reused key issue in Asymmetric Encryption
I am playing around with disk encryption. https://gitlab.com/cryptsetup/cryptsetup/-/wikis/DMCrypt#iv-generators says:
essiv: “encrypted sector|salt initial vector”, the sector number is encrypted with the bulk cipher using a salt as k… Continue reading AES-256 ESSIV in dm-crypt
I am newbie in AES, so I started to read about its pros and cons. WHEN I read that using same IV is discouraged, I wondered WHY? While searching about it I found that it can be Easily found out by a seasoned analyst. There are 2 questions … Continue reading How to find IV when key, plaintext and encrypted text is given?
If I have the the plain text, the cipher text and the key for an AES-128 CBC operation, can I determine the IV, even if I don’t know the padding (assuming the padding follows one of the more common formats)?
I believe it sho… Continue reading Given the key, the plain text and the cipher text can I calculate the Initialization Vector used in AES [migrated]
I am Salesforce developer but new to the Security World as well as Linux. We encrypted a file with Key and initialization Vector in Salesforce(only symmetric encryption is possible in Salesforce). No we are working with partn… Continue reading Decrypt file using Key and Initialization Vector in Linux
I have been successfully using openssl to encrypt a large file. I’m trying to develop the equivalent nodejs crypto API code for the following openssl commands:
openssl rand -hex 64 -out {keyfile}
openssl enc -aes-256… Continue reading How to translate "openssl enc" command to nodejs crypto api
I am implementing AES in C/C++ for communication between 2 Arduino devices using RF modules.
Should the initialization vector should be kept private or it does not matter if it is public? I am searching google many hours no… Continue reading Can AES IV be public? [on hold]