Function mbedtls_sys::mbedtls_ecdsa_genkey

pub unsafe extern "C" fn mbedtls_ecdsa_genkey(
    ctx: *mut mbedtls_ecdsa_context, 
    gid: mbedtls_ecp_group_id, 
    f_rng: Option<unsafe extern "C" fn(_: *mut c_void, _: *mut c_uchar, _: size_t) -> c_int>, 
    p_rng: *mut c_void
) -> c_int