struct rsa_st{/* The first parameter is used to pickup errors where* this is passed instead of aEVP_PKEY, it is set to 0 */int pad;long version;const RSA_METHOD *meth;/* functional reference if ‘meth‘ is ENGINE-provided */ENGINE *engine;BIGNUM *n;BIGNUM *e;BIGNUM *d;BIGNUM *p;BIGNUM *q;BIGNUM *dmp1;BIGNUM *dmq1;BIGNUM *iqmp;/* be careful using this if the RSA structure is shared */CRYPTO_EX_DATA ex_data;int references;int flags;/* Used to cache montgomery values */BN_MONT_CTX *_method_mod_n;BN_MONT_CTX *_method_mod_p;BN_MONT_CTX *_method_mod_q;/* all BIGNUM values are actually in the following data, if it is not* NULL */char *bignum_data;BN_BLINDING *blinding;BN_BLINDING *mt_blinding;};