https://github.com/brandonki/rsa-c

RSA encryption implementation in C (WIP)
https://github.com/brandonki/rsa-c

Last synced: 12 days ago
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RSA encryption implementation in C (WIP)

• Host: GitHub
• URL: https://github.com/brandonki/rsa-c
• Owner: BrandonKi
• License: mit
• Created: 2021-03-01T17:17:53.000Z (almost 4 years ago)
• Default Branch: main
• Last Pushed: 2021-03-02T03:01:23.000Z (almost 4 years ago)
• Last Synced: 2024-11-10T22:19:35.795Z (2 months ago)
• Language: C
• Size: 10.7 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# __RSA encryption implementation in C (WIP)__

At the moment each character is encrypted/decrypted individually and small keys are used.

This means that the output is in a predictable format and can be reversed given enough time and resources.

This is meant to be a lightweight and fast way to encrypt data. It should not be used where security is extremely important.

rsa.h can be used as a header only library. rsa.c is just a sample.

    rsa.c usage: rsa [e public key] | [d private key] | [g] | [s sizeof_stdin_buffer]

## __example usage:__

### __generate the keys with the `g` option__

```./rsa g```

### __enter the text to be encryped through stdin and use the `e`__

```echo "text" | ./rsa e 3233 17```

### __enter the encryped text through stdin to be decrypted and use the `d`__

```echo "884 1313 1542 884" | ./rsa d 3233 413```

### __the `s` option can be used to specify the max size of the input to avoid overflow or wasted space__

@NOTE make sure there are at least 2 extra bytes given to the size option

```echo "test" | ./rsa e 3233 413 s 10```

### TODO

- put two characters into each encrypted "block"

- output raw binary data instead of outputting the value as an integer