RSA (use genrsa, rsa, rsautl for help on generation, and signing) 
1. Generate RSA private key with e = 3 and n with 256 bits.
2. Check whether n=p.q - use wolfram alpha. 
3. Generate corresponding public key. 
4. Use keys to encrypt-decrypt arbitrary message. 
What is the maximum size of message?

DSA
1.Generate 1024 DSA parameters to DSAparams.pem.
2.Generate DSA private and public key from DSAparams.pem.   
3.Hash file file.txt("PV181") using md5 to file file.md5.
4.Sign the file with DSA to sigfile.bin.
5.Verify the signature.