Hello. I see many functions have prefixes: i2d_ d2i_ b2i_ i2b_ For example: i2d_PublicKey i2d_PrivateKey d2i_PublicKey d2i_PrivateKey b2i_PublicKey b2i_PrivateKey i2b_PublicKey_bio i2b_PrivateKey_bio I think these letters: 'i', 'd', 'b' have some meaning. Can somebody help me to understand what they are mean? And one more question. In accordance to: https://www.openssl.org/docs/crypto/EVP_PKEY_new.html, EVP_PKEY structure is used by OpenSSL to store private keys. But there are above functions which use as parameters pointer to EVP_PKEY structure and as they are named they can work with both public and private keys. So the questions are: 1. can we save to EVP_PKEY structure public key not private? 2. can we save to EVP_PKEY structure public and private keys at once? For example: EVP_PKEY * pkey; pkey = EVP_PKEY_new(); RSA * rsa; rsa = RSA_generate_key(...) EVP_PKEY_assign_RSA(pkey, rsa); What key or keys will be in pkey after that? -- Best Regards, Serj
