The first step is to generate the private keys and the public keys (addresses).
These are two public keys.
> 1NGJoYzwfMotjjBuZZ5H4BujcxGZMQDMoW (private key 1)
> 1L3pUofp8EYX7uXVFy2gNSBTanmdC8sRWe (private key 2)
In addition to what pooya87 said, an address is not the same as a public key.
This all seems a little bit weird for me. This might be the case of a
XY problem. What exactly do you want to achieve ? A 2 out of 2 multisig ?
And why do you want to do it without any computer ? Don't you trust your software or hardware ? Do you distrust any random number generator, or what specifically ?