IMPLEMENT_PEM_write_cb
IMPLEMENT_PEM_write_cb(DSAPrivateKey, DSA, PEM_STRING_DSA, DSAPrivateKey)
IMPLEMENT_PEM_write_cb(RSAPrivateKey, RSA, PEM_STRING_RSA, RSAPrivateKey)
#define IMPLEMENT_PEM_write_cb(name, type, str, asn1) \