Use a private key from a memory buffer.
void use_private_key( const const_buffer & private_key, file_format format);
This function is used to load a private key into the context from a buffer.
The buffer containing the private key.
The private key format (ASN.1 or PEM).
Thrown on failure.
Calls SSL_CTX_use_PrivateKey
or SSL_CTX_use_PrivateKey_ASN1.