How to Generate RSA Keys in VSS verifone and compute public /CA?

Question

I am not able to generate RSA key pair inside VSS through macros. I am in need of script to gerate key inside and compute Public CA and do RSA computation inside. Please help in this regard.

Answer 1

As far as I know, it is not possible to generate a RSA keypair inside VSS (v4.0).

You might want to try generating a keypair using the embedded openssl and then store it into the key slot (beware that there are probably some constraints on some key slots (modulus length,exponent length) -- check your documentation).

Beware that the RSACOMP operation does only a raw RSA computation (modular exponentiation) and you will have to handle the padding stuff yourself (and correctly).

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A much simpler alternative is to generate the keypair outside (HSM?) and inject it securely to the terminal (I do not understand your use case -- but some certificate for this keypair could be injected as well)

Good luck!