hash - How does file hashing works? - Information Security Stack …
Aug 30, 2017 · When you run sha256sum filename OR md5sum filename, does it generate hash based on the file size or the whole contents of a file? Is it different from password hash? Given …
hash - How to verify the checksum of a downloaded file (pgp, sha, …
Jul 5, 2018 · The best example of where it makes sense to verify a hash is when retrieving the hash from the software's trusted website (using HTTPS of course), and using it to verify files …
hash - What security purpose do hashes of files serve?
Mar 25, 2013 · Many websites offering downloads also provide the MD5 or SHA1 hashes of the files which are available for download. An example- What is the security purpose behind …
Which hashing algorithm shoud I use for a safe file checksum?
Nov 29, 2018 · If you are concerned about this then use a signature of the file instead of a hash, and notarize the signature and the public key but keep the private key to yourself.) Example of …
hash - How likely is a collision using MD5 compared to SHA256 …
Feb 11, 2019 · Many sites these days offer MD5 and SHA256 hashes to check the integrity of downloaded files or archives. I wonder how much safer is the use of the SHA256 hashes for …
Checksum vs. Hash: Differences and Similarities?
Sep 27, 2018 · A cryptographic hash function (such as SHA1) is a checksum that is secure against malicious changes. It is pretty hard to create a file with a specific cryptographic hash. …
Is it enough to verify the hash to ensure file is virus free?
Nov 5, 2022 · The hash only shows you if the file was corrupted or altered, not if the file is clean. Someone can send you ransomware with a hash, you calculate the hash and it will show the …
certificates - What does "signing" a file really mean? - Information ...
Nov 26, 2018 · Signing a file does not encrypt it. When Alice signs a file she usually signs the whole file. So she calculates a hash of the whole file and signs only the hash with her private …
Hash value changes after first opening a file
Jun 25, 2019 · Is it possible or normal that the hash value of a file changes just after the first opening/execution of it? I used sha256sum function within Ubuntu terminal to check the hash …
Is it possible to recreate a file using only its hash
Jul 27, 2017 · To my knowledge, a file can have only one hash and a hash corresponds to only that file (keeping aside the 2 file one hash bug). Using that knowledge is it possible to make an …