<Replacement for RSA_public_decrypt>

[Narayana, Sunil Kumar]

Dear Openssl team,
                While migrating from 1.0.2 to 3.0 we observe that RSA_public_decrypt() API been deprecated in 3.0.
We referred the example provided in man page but we are not clear in generating the initial 'key' required to create CTX.
Please suggest on (key , eng) params to proceed

Also currently we are using PEM_read_bio_RSA_PUBKEY() to generate RSA, I think this might not require in case of EVP, please suggest.

/*
  * NB: assumes key, eng, in, inlen are already set up
  * and that key is an RSA private key
  */
ctx = EVP_PKEY_CTX_new(key, eng);


Regards,
Sunil


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