Please select what kind of key you want:
(1) DSA and ElGamal (default)
(2) DSA (sign only)
(4) ElGamal (sign and encrypt)
Your selection?
DSA is a public key algorithm used for creating digital signatures. It was created by NIST. Key size in DSA is 512 to 1024 bits. > 768 is adequate.
ElGamal is a cryptosystem that consists of both signature and encryption variants.
Press enter at this screen to accept the default, which is to utilize both DSA and ElGamal. If you choose to only create one or the other, the remaining keypair can be created later.