Typo.

Generate an RSA private key using default parameters:

 openssl genpkey -algoritm RSA -out key.pem 

 openssl genpkey -algorithm RSA -out key.pem 

Encrypt output private key using 128 bit AES and the passphrase "hello":

 openssl genpkey -algoritm RSA -out key.pem -aes-128-cbc -pass pass:hello

 openssl genpkey -algorithm RSA -out key.pem -aes-128-cbc -pass pass:hello

Generate a 2048 bit RSA key using 3 as the public exponent:

 openssl genpkey -algoritm RSA -out key.pem -pkeyopt rsa_keygen_bits:2048 \

 openssl genpkey -algorithm RSA -out key.pem -pkeyopt rsa_keygen_bits:2048 \

 						-pkeyopt rsa_keygen_pubexp:3

Generate 1024 bit DSA parameters: