8. OpenSSL Crypto Poll Mode Driver

This code provides the initial implementation of the openssl poll mode driver. All cryptography operations are using Openssl library crypto API. Each algorithm uses EVP interface from openssl API - which is recommended by Openssl maintainers.

For more details about openssl library please visit openssl webpage: https://www.openssl.org/

8.1. Features

OpenSSL PMD has support for:

Supported cipher algorithms:

  • RTE_CRYPTO_CIPHER_3DES_CBC
  • RTE_CRYPTO_CIPHER_AES_CBC
  • RTE_CRYPTO_CIPHER_AES_CTR
  • RTE_CRYPTO_CIPHER_3DES_CTR
  • RTE_CRYPTO_CIPHER_DES_DOCSISBPI

Supported authentication algorithms:

  • RTE_CRYPTO_AUTH_AES_GMAC
  • RTE_CRYPTO_AUTH_MD5
  • RTE_CRYPTO_AUTH_SHA1
  • RTE_CRYPTO_AUTH_SHA224
  • RTE_CRYPTO_AUTH_SHA256
  • RTE_CRYPTO_AUTH_SHA384
  • RTE_CRYPTO_AUTH_SHA512
  • RTE_CRYPTO_AUTH_MD5_HMAC
  • RTE_CRYPTO_AUTH_SHA1_HMAC
  • RTE_CRYPTO_AUTH_SHA224_HMAC
  • RTE_CRYPTO_AUTH_SHA256_HMAC
  • RTE_CRYPTO_AUTH_SHA384_HMAC
  • RTE_CRYPTO_AUTH_SHA512_HMAC

Supported AEAD algorithms:

  • RTE_CRYPTO_AEAD_AES_GCM
  • RTE_CRYPTO_AEAD_AES_CCM

8.2. Installation

To compile openssl PMD, it has to be enabled in the config/common_base file and appropriate openssl packages have to be installed in the build environment.

The newest openssl library version is supported:

  • 1.0.2h-fips 3 May 2016.

Older versions that were also verified:

  • 1.0.1f 6 Jan 2014
  • 1.0.1 14 Mar 2012

For Ubuntu 14.04 LTS these packages have to be installed in the build system:

sudo apt-get install openssl
sudo apt-get install libc6-dev-i386 # for i686-native-linuxapp-gcc target

This code was also verified on Fedora 24. This code has NOT been verified on FreeBSD yet.

8.3. Initialization

User can use app/test application to check how to use this pmd and to verify crypto processing.

Test name is cryptodev_openssl_autotest. For performance test cryptodev_openssl_perftest can be used.

To verify real traffic l2fwd-crypto example can be used with this command:

sudo ./build/l2fwd-crypto -l 0-1 -n 4 --vdev "crypto_openssl"
--vdev "crypto_openssl"-- -p 0x3 --chain CIPHER_HASH
--cipher_op ENCRYPT --cipher_algo AES_CBC
--cipher_key 00:01:02:03:04:05:06:07:08:09:0a:0b:0c:0d:0e:0f
--iv 00:01:02:03:04:05:06:07:08:09:0a:0b:0c:0d:0e:ff
--auth_op GENERATE --auth_algo SHA1_HMAC
--auth_key 11:11:11:11:11:11:11:11:11:11:11:11:11:11:11:11:11:11:11:11:11:11
:11:11:11:11:11:11:11:11:11:11:11:11:11:11:11:11:11:11:11:11:11:11:11:11:11
:11:11:11:11:11:11:11:11:11:11:11:11:11:11:11:11:11

8.4. Limitations

  • Maximum number of sessions is 2048.
  • Chained mbufs are supported only for source mbuf (destination must be contiguous).
  • Hash only is not supported for GCM and GMAC.
  • Cipher only is not supported for GCM and GMAC.