RC4 algorithm implementation in C

[0xwal]

RC4 Encryption

Description:

Write the RC4 algorithm to encrypt/decrypt data.

Details:

Header:

src/include/rc4.h

Source file:

src/rc4.c

Test file:

tests/rc4.test.cpp

Signature:

void rc4(const char* key, size_t keyLength, const char* plain, size_t plainLength, char* result);

Test Cases:

1. Input: key: "h" plain: "foo", output: result: "\xc7\x22\xc7"
2. Input: key: "secret" plain: "foo", output: result: "\x8b\x59\xbd"

Restriction:

• Do not use any builtin string functions.
• Only allowed to use memory functions ex: malloc, calloc, etc.

Note:

See Contribution Guide for more details.

Let me know if you are unable to write the tests, I will do that for you.

Also if you want any help let me know 😉.

[0xwal]

Done 🚀