i2d_PKCS8_PRIV_KEY_INFO_bio
i2d_PKCS8_PRIV_KEY_INFO_bio(out, p8inf);
ret = i2d_PKCS8_PRIV_KEY_INFO_bio(bp, p8inf);
ret = i2d_PKCS8_PRIV_KEY_INFO_bio(bp, p8inf);
int i2d_PKCS8_PRIV_KEY_INFO_bio(BIO *bp,PKCS8_PRIV_KEY_INFO *p8inf);