ssl

A learning project whose main goal was to understand the operation of the md5 and sha256 hashing algorithms.

There are documentations of implementation of these algorithms in this project:

• md5
• sha256

Usage/Examples

ssl --help

Usage: ssl <COMMAND>

Commands:
  md5     compute and check MD5 message digest
  sha256  compute and check SHA256 message digest
  help    Print this message or the help of the given subcommand(s)

Options:
  -h, --help     Print help
  -V, --version  Print version

MD5 command

ssl md5 --help

compute and check MD5 message digest

Usage: ssl md5 [OPTIONS] [FILE]...

Arguments:
  [FILE]...  Files to digest (optional; default is stdin). With no FILE, or when FILE is -, read standard input

Options:
  -t, --tag    create a BSD-style checksum if true. else create GNU style checksum file
  -c, --check  read checksums from the FILEs and check them
  -h, --help   Print help

Examples

echo "Hello World" | ssl md5

e59ff97941044f85df5297e1c302d260  -

echo "Hello World" > hello
ssl md5 hello

e59ff97941044f85df5297e1c302d260  hello

ssl md5 hello > hello.sum
ssl md5 -c hello.sum

hello: OK

SHA256 command

ssl sha256 --help

compute and check SHA256 message digest

Usage: ssl sha256 [OPTIONS] [FILE]...

Arguments:
  [FILE]...  Files to digest (optional; default is stdin). With no FILE, or when FILE is -, read standard input

Options:
  -t, --tag    create a BSD-style checksum if true. else create GNU style checksum file
  -c, --check  read checksums from the FILEs and check them
  -h, --help   Print help

Examples

echo "Hello World" | ssl sha256

d2a84f4b8b650937ec8f73cd8be2c74add5a911ba64df27458ed8229da804a26  -

echo "Hello World" > hello
ssl sha256 hello

d2a84f4b8b650937ec8f73cd8be2c74add5a911ba64df27458ed8229da804a26  hello

ssl sha256 hello > hello.sum
ssl sha256 -c hello.sum

hello: OK