Linked Questions

I've been using this command to encrypt files for a while now: openssl aes-256-cbc -a -salt -in secrets.txt -out secrets.txt.enc Then I type in a password. Can someone tell me, roughly speaking, how ...

While researching how to encrypt private keys for SSH connections as securely as possible, I have run into the following very basic understanding problems (Note: I have used the newest stable release ...

Wikipedia states that md5's collision resistance is 2^18 (https://en.wikipedia.org/wiki/MD5). I just found out that openssl enc uses md5 to hash the password and the salt. Let's assume that I want ...

I'm using OpenSSL's des3 tool to encrypt a file, e.g. openssl des3 -salt -k SUPER_SECURE_PASSPHRASE < inputFile > outputFile Everything's working, but now I have to choose a final, fixed ...

This answer on another question on security stackexchange by a very reputed user explains why he prefers GnuPG over OpenSSL for file encryption. From what I understand, it can be summarized as this: ...

So I followed openssl: recover key and IV by passphrase and managed to retrieve my salt, key and IV using -P in openssl. openssl enc -aes-256-cbc -in encrypted -pass "pass:password" -out m.jpg this ...

I'm trying to find out which encryption method is used by a piece of software I use, viz. the 'Cloud Sync' feature of Synology's DSM 6.0 running on a Synology NAS. (Background. This Cloud Sync ...

I'm a freshmen in cryptography and want to know more about IV reversing. There's a lot of posts about finding the passphrase with a new IV. But what about the other situation? This is for educational ...

Let's consider this openssl command : openssl enc -aes-256-cbc -pass pass:PASSWORD Why is it important to have a good Key Derivation Function? This answer to another question suggest that GnuPG is ...

I'm using openssl for a project and came across two options: -k passphrase and -K raw_key (hex). What's the difference between the two options? I've been attempting to port something from openssl to ...

Am learning OpenSSL EVP API and trying to understand the ways to generate a symmetric key using OpenSSL EVP in C++ program. I have two questions in this regard: 1) To understand what the command ...

I try to really securely encrypt a file with OpenSSL. I´m new to OpenSSL and just read here, that it´s not very secure due to it´s behavior in generating salt & IV, and storing it within the ...

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 ...

I'm trying to encrypt a string like this: echo "hey" | openssl enc -aes-256-cbc-hmac-sha1 -md sha256 -pass pass:foo -base64 But word on the street is that older versions of openssl are not ...

Sorry for the naive question. I wonder how DigitalOcean Spaces (S3 compatible) fits personal backups. I found a lot of information about security of Amazon S3 and its security is undoubted, however, ...