write_rsa_data
write_rsa_data(dd, MISC_CFG_RSA_SIGNATURE, signature, KEY_SIZE);
write_rsa_data(dd, MISC_CFG_RSA_MODULUS, fdet->modulus, KEY_SIZE);
write_rsa_data(dd, MISC_CFG_RSA_R2, fdet->r2, KEY_SIZE);
write_rsa_data(dd, MISC_CFG_RSA_MU, fdet->mu, MU_SIZE);