> For the complete documentation index, see [llms.txt](https://book.bsdcn.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://book.bsdcn.org/man/man4/ossl.4.md).

# ossl.4

`ossl` — 使用 OpenSSL 汇编例程的驱动

## 名称

`ossl`

## 概要

`要将此驱动编译进内核，请在你的内核配置文件中加入以下行：`

> device crypto device cryptodev device ossl

`或者，要在引导时以模块形式加载此驱动，请在 loader.conf(5) 中加入以下行：`

```sh
ossl_load="YES"
```

## 描述

OpenSSL 发行版包含一些常用加密算法的架构特定实现。此驱动为这些例程提供了一个包装器，使其能被内核加密消费者（如内核 TLS 和 IPsec）使用。

`ossl` 驱动包含以下架构的特定实现：

* arm64
* amd64
* i386

`ossl` 驱动支持以下算法：

* AES-CBC
* AES-GCM（仅 amd64）
* ChaCha20
* ChaCha20-Poly1305（RFC 8439）
* Poly1305
* SHA1
* SHA1-HMAC
* SHA2-224
* SHA2-224-HMAC
* SHA2-256
* SHA2-256-HMAC
* SHA2-384
* SHA2-384-HMAC
* SHA2-512
* SHA2-512-HMAC

## 参见

[crypto(4)](/man/man4/crypto.4.md), [intro(4)](/man/man4/intro.4.md), [ipsec(4)](/man/man4/ipsec.4.md), [crypto(7)](/man/man7/crypto.7.md), [crypto(9)](https://github.com/FreeBSD-Ask/freebsd-man-sc/blob/main/man9/crypto.9.md)

## 历史

`ossl` 驱动最早出现于 FreeBSD 13.0。


---

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