130 struct engine_st {  struct
131     const char *id;
132     const char *name;
133     const RSA_METHOD *rsa_meth;
134     const DSA_METHOD *dsa_meth;
135     const DH_METHOD *dh_meth;
136     const EC_KEY_METHOD *ec_meth;
137     const RAND_METHOD *rand_meth;
139     ENGINE_CIPHERS_PTR ciphers;
141     ENGINE_DIGESTS_PTR digests;
143     ENGINE_PKEY_METHS_PTR pkey_meths;
168     struct engine_st *prev;  argument
169     struct engine_st *next;  argument
171     struct engine_st *prev_dyn;  argument
172     struct engine_st *next_dyn;  argument
173     ENGINE_DYNAMIC_ID dynamic_id;