[openssl-dev] Guidance on browsing code base

[Fan Zhang]

Hi, all,

Happy to meet your guys by this email. I’m trying to dig into the code base and find an implementation of RSA signature. Naturally, I looked into the function `int RSA_sign` in file `crypto/rsa/rsa_sign.c`, which further calls the `RSA_private_encrypt` and `RSA_private_encrypt` calls the method `rsa_priv_enc` in `rsa->meth`.

83 int RSA_private_encrypt(int flen, const unsigned char *from,
84                         unsigned char *to, RSA *rsa, int padding)
85 {
86     return (rsa->meth->rsa_priv_enc(flen, from, to, rsa, padding));
87 }

After this, I got lost. I couldn't find when `rsa->meth` is initialized. Or maybe more directly, where is the actual code implementing the `rsa_priv_enc`? Thanks in advance!

Best
Fan


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