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I want to use AES-CBC for secure firmware upgrades on a microcontroller, with AES-CMAC for checking the integrity of the firmware image. The AES-CMAC algorithm needs a AES-128 encryption funtion. For the firmware upgrade, I need decryption… Continue reading modified AES-CMAC algorithm [migrated]
I have a zip file containing an unencrypted folder with encrypted files inside.
Given that for some files I have their originals, is it possible to restore the password used for encryption?
Continue reading Recover AES256 zip password by known result
This post has been MOVED to StackOverflow due to lack of answers on Info Security:
https://stackoverflow.com/questions/60960802/securely-encrypt-and-decrypt-files-via-pbe-in-java-jasypt-seems-insecure
Considered solutions were Jasypt a… Continue reading Securely encrypt and decrypt files via PBE in Java (Jasypt seems insecure)
I’ve been messing around with qpdf, and noticed something that seems huge: that a document’s Owner Password is essentially useless, as it can be easily unset, and therefore that only the User Password offers any real security for a PDF.
I’m thinking of implementing text encryption and decryption in my program using AES using key sharing thanks to Multiparty Computation (the point is that the key should never be provided in full), however, all public libraries that I found… Continue reading Encrypting text with AES and MPC
My former colleagues have encrypted an XML file as per FATCA-IDES standard:
Digitally signed the XML payload (using “enveloping” signature and create SHA2-256 hash)
RSA digital signature using the 2048-bit private key that corresponds to… Continue reading How to decrypt XML encrypted as per FATCA IDES standard?
I am currently using mac os disc utility on mac and normally create a 10GB encrypted image to store my random private files in…
What really makes me paranoid is how fast or shall we say that it opens instantly once i put in my passcode…. Continue reading Are Mac OSX encrypted volumes to be trusted(from Disc utility)
Key generation program in C:
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#define KEYSIZE 16
void main()
{
int i;
char key[KEYSIZE];
printf("%lld\n", (lo… Continue reading Write a Python or C program to guess the key [closed]
Can I recover a password of an AES-encrypted ZIP if I know its extracted & decrypted content? The archive contains two files protected with two different passwords.
Continue reading Recover password of ZIP archive, having its decrypted and extracted content
I have rar with protected pass.But I have the AES-256 key can I crack it and if I can. how?
Continue reading How to crack rar file with protected pass with only the AES-256 key?