wincrypt.h equivalent on linux

[AcarX]

HCRYPTPROV ctx;
HCRYPTHASH hash;
HCRYPTKEY key;
char data[32] = "Some data";
DWORD len = strlen(data);

CryptAcquireContext(&ctx, 0, "Microsoft Base Cryptographic Provider v1.0", 1, CRYPT_VERIFYCONTEXT);
CryptCreateHash(ctx, CALG_MD5, 0, 0, &hash);
CryptHashData(hash, "mykey", 5, 0);
CryptDeriveKey(ctx, CALG_RC4, hash, 4, &key);
CryptDecrypt(key, 0, 0, 0, (BYTE *)data, &len);
CryptDestroyKey(key);
CryptDestroyHash(hash);
CryptReleaseContext(ctx);

This is what I use on Windows to encrypt/decrypt certain files. On Linux, I've tried OpenSSL functions MD5(..) and RC4(..) but they didn't produce the same output. Does anyone know an equivalent of code above on Linux?

[kbw]

Important This API is deprecated. New and existing software should start using Cryptography Next Generation APIs. Microsoft may remove this API in future releases.

https://msdn.microsoft.com/en-us/library/windows/desktop/aa379886(v=vs.85).aspx

Why do you want to use a deprecated crypto API?

In any event, if you want the benefits of an open system, you need to use open, not proprietary, software.