>There isn't much difference between this: > > RSA_set0_key(rsa, n, NULL, NULL); > RSA_set0_key(rsa, NULL, e, NULL); > RSA_set0_key(rsa, NULL, NULL, d); > >and something like this: > > RSA_set0_n(rsa, n); > RSA_set0_e(rsa, e); > RSA_set0_d(rsa, d);
The attractiveness of RSA_set0_key(rsa, n, NULL, NULL); is that you can provide whatever many (from 1 to 3 :) parameters using the same single function call, rather than learning three different (albeit quite simple :) independent functions. >The only difference is that with the former, you get two-in-one, as it >also works as a function to set all three numbers in one go. Yes, but this difference adds convenience, IMHO. My preference is this: RSA_set0_key(rsa, n, e, d); with any parameter (except for rsa :) potentially NULL.
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