Lab #2 – Lab Assessment Worksheet
Applying Encryption and Hashing Algorithms for Secure Communications:
CIS552 Cybercrime Technqs and Respons
MD5sum – 46edc6541babd006bb52223c664b29a3
SHA1sum – a6f153801c9303d73ca2b43d3be62f44c6b66476
They will change because the hash values are calculated based of the text that exist so if that changes so will the hash values.
The hash is the same because the file is still the same, the hash will only change when the file changes. If the Hash change at the other end would mean that something has changed since it was first calculated.
You could use Digital signature.
Encrypt data and can be used with –sign.
Primary difference between the older MD5 and the newer SHA1sum hashes is that MD5 produces a 128-bit output while SHA1sum produces a 160-bit output. SHA1sum is better because it is newer and produces 160-bit. SHA1 is recommended more than md5 for hashing since md5 is practically broken as lot of collisions have been found.
MD5sum and SHA1sum hash values.
To decrypt a message the option --decrypt is used. You need the private key to which the message was encrypted.
Decrypt file and write it to stdout. It will also verify the signature if the file is signed.
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