[openssl/openssl] a47eff: Document that the RSA e value is mandatory when im...

[Shane]

  Branch: refs/heads/openssl-3.0
  Home:   https://github.com/openssl/openssl
  Commit: a47eff38d7e7dd2e0cfba304fc588c4b6f3ab5c0
      https://github.com/openssl/openssl/commit/a47eff38d7e7dd2e0cfba304fc588c4b6f3ab5c0
  Author: slontis <shane.lontis at oracle.com>
  Date:   2023-01-26 (Thu, 26 Jan 2023)

  Changed paths:
    M doc/man7/EVP_PKEY-RSA.pod

  Log Message:
  -----------
  Document that the RSA e value is mandatory when importing.

The lab tried doing a RSA decryption primitive using just n (using p, q) and d.

This failed for 2 reasons:
(1) e is required when importing
(2) Internally e is used for blinding.

Note n and e can be calculated using:
n = pq
e = (1/d) mod (p-1)(q-1)

Reviewed-by: Paul Dale <pauli at openssl.org>
Reviewed-by: Tomas Mraz <tomas at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/20133)

(cherry picked from commit 6e3b1c81736b1829584e3f40c2d00040fe1aa881)