libcrypto.X509_PURPOSE_get_by_sname.argtypes=(c_char_p,)
libcrypto.X509_verify.argtypes = (c_void_p, c_void_p)
libcrypto.X509_verify_cert.argtypes = (c_void_p,)
libcrypto.X509_PURPOSE_get_by_sname.argtypes=(c_char_p,)
libcrypto.X509_verify.argtypes = (c_void_p, c_void_p)
libcrypto.X509_verify_cert.argtypes = (c_void_p,)