Use an RSA private key from a memory buffer.
void use_rsa_private_key( const const_buffer & private_key, file_format format);
This function is used to load an RSA private key into the context from a buffer.
The buffer containing the RSA private key.
The private key format (ASN.1 or PEM).
Thrown on failure.
Calls SSL_CTX_use_RSAPrivateKey
or SSL_CTX_use_RSAPrivateKey_ASN1.