Openssl Genkey

struct rsa_public_key {
    uint len;       /* Length of modulus[] in number of uint32_t */
    uint32_t n0inv;     /* -1 / modulus[0] mod 2^32 */
    uint32_t *modulus;  /* modulus as little endian array */
    uint32_t *rr;       /* R^2 as little endian array */
};