Features/VirtioCrypto: Difference between revisions
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The virtio crypto | The virtio crypto is a virtual crypto device as well as a kind of | ||
virtual hardware accelerator for virtual machines. | virtual hardware accelerator for virtual machines. The encryption and | ||
decryption requests are placed in the data queue | decryption requests are placed in the data queue and handled by the | ||
real crypto accelerators finally. The second queue is the control queue | real crypto accelerators finally. The second queue is the control queue used to create or destroy sessions for symmetric algorithms and | ||
control some advanced features in the future. The virtio crypto | control some advanced features in the future. The virtio crypto | ||
device | device provides the following crypto services: CIPHER, MAC, HASH, AEAD etc. | ||
== Feature maintainers == | == Feature maintainers == | ||
| Line 19: | Line 17: | ||
==Quickstart== | ==Quickstart== | ||
'''Host:''' | '''Host:''' | ||
* Step 1 | * Step 1: Build Qemu with '''gcrypt''' or '''nettle''' cryptography support | ||
$ git clone -b virtio-crypto https://github.com/gongleiarei/qemu | $ git clone -b virtio-crypto https://github.com/gongleiarei/qemu | ||
| Line 32: | Line 24: | ||
$ make | $ make | ||
* Step | * Step 2: Strat Qemu using the following parameters: | ||
$ qemu-system-x86_64 \ | $ qemu-system-x86_64 \ | ||
[...] \ | [...] \ | ||
-cryptodev | -object cryptodev-backend-builtin,id=cryptodev0 \ | ||
-device virtio-crypto-pci,id=crypto0,cryptodev=cryptodev0 \ | -device virtio-crypto-pci,id=crypto0,cryptodev=cryptodev0 \ | ||
[...] | [...] | ||
| Line 42: | Line 34: | ||
'''Guest:''' | '''Guest:''' | ||
* Step 1: | * Step 1: get the newest virtio-crypto linux driver which was merged in Linux master tree. | ||
$ git clone https://github.com/ | $ git clone https://github.com/torvalds/linux.git | ||
$ | $ make; make modules_install; make install | ||
$ | $ reboot; # with the newest linux kernel | ||
* Step 2: use cryptodev-linux test the crypto functions | * Step 2: use cryptodev-linux test the crypto functions | ||
| Line 56: | Line 48: | ||
$ cd cryptodev-linux | $ cd cryptodev-linux | ||
$ make; make install | $ make; make install | ||
$ insmod cryptodev.ko | |||
$ cd tests | $ cd tests | ||
$ make | |||
$ ./cipher - | $ ./cipher - | ||
requested cipher CRYPTO_AES_CBC, got cbc(aes) with driver virtio_crypto_aes_cbc | requested cipher CRYPTO_AES_CBC, got cbc(aes) with driver virtio_crypto_aes_cbc | ||
Latest revision as of 19:41, 30 September 2023
The virtio crypto is a virtual crypto device as well as a kind of virtual hardware accelerator for virtual machines. The encryption and decryption requests are placed in the data queue and handled by the real crypto accelerators finally. The second queue is the control queue used to create or destroy sessions for symmetric algorithms and control some advanced features in the future. The virtio crypto device provides the following crypto services: CIPHER, MAC, HASH, AEAD etc.
Feature maintainers
Gonglei: <arei.gonglei@huawei.com>
Code
- Virtio-crypto specification: Gonglei's virtio.git
- Virtio-crypto linux driver: Gonglei's virtio-crypto-linux-driver.git
- QEMU: Gonglei's qemu.git
- Cryptodev-linux: Cryptodev-linux's website Cryptodev-linux is implemented as a standalone module that requires no dependencies other than a stock linux kernel.
Quickstart
Host:
- Step 1: Build Qemu with gcrypt or nettle cryptography support
$ git clone -b virtio-crypto https://github.com/gongleiarei/qemu $ cd qemu $ ./configure --target-list=x86_64-softmmu $ make
- Step 2: Strat Qemu using the following parameters:
$ qemu-system-x86_64 \
[...] \
-object cryptodev-backend-builtin,id=cryptodev0 \
-device virtio-crypto-pci,id=crypto0,cryptodev=cryptodev0 \
[...]
Guest:
- Step 1: get the newest virtio-crypto linux driver which was merged in Linux master tree.
$ git clone https://github.com/torvalds/linux.git $ make; make modules_install; make install $ reboot; # with the newest linux kernel
- Step 2: use cryptodev-linux test the crypto functions
Testing
Use the cryptodev-linux module to test the crypto functions in the guest.
$ git clone https://github.com/cryptodev-linux/cryptodev-linux.git $ cd cryptodev-linux $ make; make install $ insmod cryptodev.ko $ cd tests $ make $ ./cipher - requested cipher CRYPTO_AES_CBC, got cbc(aes) with driver virtio_crypto_aes_cbc AES Test passed requested cipher CRYPTO_AES_CBC, got cbc(aes) with driver virtio_crypto_aes_cbc requested cipher CRYPTO_AES_CBC, got cbc(aes) with driver virtio_crypto_aes_cbc Test passed
A simple benchmark in the cryptodev-linux module (synchronous encryption in the guest and no hardware accelerator in the host)
$ ./speed
Testing AES-128-CBC cipher:
Encrypting in chunks of 512 bytes: done. 85.10 MB in 5.00 secs: 17.02 MB/sec
Encrypting in chunks of 1024 bytes: done. 162.98 MB in 5.00 secs: 32.59 MB/sec
Encrypting in chunks of 2048 bytes: done. 292.93 MB in 5.00 secs: 58.58 MB/sec
Encrypting in chunks of 4096 bytes: done. 500.77 MB in 5.00 secs: 100.14 MB/sec
Encrypting in chunks of 8192 bytes: done. 766.14 MB in 5.00 secs: 153.20 MB/sec
Encrypting in chunks of 16384 bytes: done. 1.05 GB in 5.00 secs: 0.21 GB/sec
Encrypting in chunks of 32768 bytes: done. 1.31 GB in 5.00 secs: 0.26 GB/sec
Encrypting in chunks of 65536 bytes: done. 1.51 GB in 5.00 secs: 0.30 GB/sec
Links
- China Linux Kernel Conference 2015 presentation: A new framework of cryptography virtio driver (pdf)