Collaborate Disseminate
Is there any weaknesses to encrypting fixed-length messages? Should a random amount of padding be added to the message to decrease the odds of some sort of attack?
Continue reading Is it cryptographically insecure to use fixed-length AES-GCM messages?
I’m playing around with openssl command line to verify my understanding on block cipher mode.
I read that ECB block cipher mode always encrypt the same text to the same output.
AES operates on 16 bytes block, independently on the key lengt… Continue reading Why encrypting with ECB block cipher mode provides different result?
As some in here might know, there is/was a ransomware attack going on worldwide that used 7z to encrypt all files <20MB for a ton of users world wide.
Each user has a unique 32 char password (Upper & lowercase & Numbers – 62 pos… Continue reading 7z "Copy 7zAES" algo brute force with 32 char password for when original file is available (QNAP QLocker ransomware) [duplicate]
I’m implementing dh-ietf1024-sha256-aes128-cbc-pkcs7 in golang and according to documentation I’ve managed to create the 128-bit key appropriate for AES (from my 1024-bit shared-key computed from my private key and clients public key).
API… Continue reading In Algorithm: dh-ietf1024-sha256-aes128-cbc-pkcs7 where to get the IV?
I’d like to store a private symmetric key, aes-256, in a PEM file.
My understanding is that usually these types of keys are derived using RSA/EC DH and there’s no need to save them, but in my application I do need to save them and share se… Continue reading How to save AES Key in PEM file
Although this question has been answered in this link (After How Much Data Encryption (AES-256) we should change key?), I am not satisfied with the answers because the Recommendation for Block Cipher Modes of Operation: Galois/Counter Mode… Continue reading How much data can we encrypt using AES 256 before changing the key? [migrated]
I read the audit docs on GoCryptFS website (https://nuetzlich.net/gocryptfs/threat_model/). There dragon has full information about the read write done in the gcfs partition, what does this mean and how safe is it to store GoCryptFS encryp… Continue reading GoCryptfs on cloud
In the scenario of a hybrid encryption for which I use RSA (asymmetric) to encrypt the encryption key used with AES (symmetric) to encrypt my message, I need to store the encrypted key together with the cipher text and all in the same colu… Continue reading Format for storing the encrypted key and the cipher text together?
I am in exactly the same situation as described in this post. I must be able to encrypt data from a client workstation then send it to an untrusted server (encrypted at rest), then decrypt it only on the same client workstation. However, t… Continue reading Which encryption technique should be adopted to keep the search functionalities? [closed]
Do you have any source code that related to file encryption application using AES and RSA?
Continue reading Hybrid encryption – File Encryption using AES and RSA [closed]