typedef struct X509_POLICY_TREE_st X509_POLICY_TREE;
typedef struct X509_algor_st X509_ALGOR;
typedef struct X509_crl_st X509_CRL;
-typedef struct X509_name_st X509_NAME;
typedef struct X509_pubkey_st X509_PUBKEY;
typedef struct bignum_ctx BN_CTX;
typedef struct bignum_st BIGNUM;