qemu/crypto/Makefile.objs
Philippe Mathieu-Daudé 993aec27aa crypto: Add tls-cipher-suites object
On the host OS, various aspects of TLS operation are configurable.
In particular it is possible for the sysadmin to control the TLS
cipher/protocol algorithms that applications are permitted to use.

* Any given crypto library has a built-in default priority list
  defined by the distro maintainer of the library package (or by
  upstream).

* The "crypto-policies" RPM (or equivalent host OS package)
  provides a config file such as "/etc/crypto-policies/config",
  where the sysadmin can set a high level (library-independent)
  policy.

  The "update-crypto-policies --set" command (or equivalent) is
  used to translate the global policy to individual library
  representations, producing files such as
  "/etc/crypto-policies/back-ends/*.config". The generated files,
  if present, are loaded by the various crypto libraries to
  override their own built-in defaults.

  For example, the GNUTLS library may read
  "/etc/crypto-policies/back-ends/gnutls.config".

* A management application (or the QEMU user) may overide the
  system-wide crypto-policies config via their own config, if
  they need to diverge from the former.

Thus the priority order is "QEMU user config" > "crypto-policies
system config" > "library built-in config".

Introduce the "tls-cipher-suites" object for exposing the ordered
list of permitted TLS cipher suites from the host side to the
guest firmware, via fw_cfg. The list is represented as an array
of bytes.

The priority at which the host-side policy is retrieved is given
by the "priority" property of the new object type. For example,
"priority=@SYSTEM" may be used to refer to
"/etc/crypto-policies/back-ends/gnutls.config" (given that QEMU
uses GNUTLS).

The firmware uses the IANA_TLS_CIPHER array for configuring
guest-side TLS, for example in UEFI HTTPS Boot.

[Description from Daniel P. Berrangé, edited by Laszlo Ersek.]

Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20200623172726.21040-2-philmd@redhat.com>
2020-07-03 18:16:01 +02:00

44 lines
1.7 KiB
Makefile

crypto-obj-y = init.o
crypto-obj-y += hash.o
crypto-obj-$(CONFIG_NETTLE) += hash-nettle.o
crypto-obj-$(if $(CONFIG_NETTLE),n,$(CONFIG_GCRYPT)) += hash-gcrypt.o
crypto-obj-$(if $(CONFIG_NETTLE),n,$(if $(CONFIG_GCRYPT),n,y)) += hash-glib.o
crypto-obj-y += hmac.o
crypto-obj-$(CONFIG_NETTLE) += hmac-nettle.o
crypto-obj-$(CONFIG_GCRYPT_HMAC) += hmac-gcrypt.o
crypto-obj-$(if $(CONFIG_NETTLE),n,$(if $(CONFIG_GCRYPT_HMAC),n,y)) += hmac-glib.o
crypto-obj-y += aes.o
crypto-obj-y += desrfb.o
crypto-obj-y += cipher.o
crypto-obj-$(CONFIG_AF_ALG) += afalg.o
crypto-obj-$(CONFIG_AF_ALG) += cipher-afalg.o
crypto-obj-$(CONFIG_AF_ALG) += hash-afalg.o
crypto-obj-$(CONFIG_GNUTLS) += tls-cipher-suites.o
crypto-obj-y += tlscreds.o
crypto-obj-y += tlscredsanon.o
crypto-obj-y += tlscredspsk.o
crypto-obj-y += tlscredsx509.o
crypto-obj-y += tlssession.o
crypto-obj-y += secret_common.o
crypto-obj-y += secret.o
crypto-obj-$(CONFIG_SECRET_KEYRING) += secret_keyring.o
crypto-obj-y += pbkdf.o
crypto-obj-$(CONFIG_NETTLE) += pbkdf-nettle.o
crypto-obj-$(if $(CONFIG_NETTLE),n,$(CONFIG_GCRYPT)) += pbkdf-gcrypt.o
crypto-obj-$(if $(CONFIG_NETTLE),n,$(if $(CONFIG_GCRYPT),n,y)) += pbkdf-stub.o
crypto-obj-y += ivgen.o
crypto-obj-y += ivgen-essiv.o
crypto-obj-y += ivgen-plain.o
crypto-obj-y += ivgen-plain64.o
crypto-obj-y += afsplit.o
crypto-obj-$(CONFIG_QEMU_PRIVATE_XTS) += xts.o
crypto-obj-y += block.o
crypto-obj-y += block-qcow.o
crypto-obj-y += block-luks.o
util-obj-$(CONFIG_GCRYPT) += random-gcrypt.o
util-obj-$(if $(CONFIG_GCRYPT),n,$(CONFIG_GNUTLS)) += random-gnutls.o
util-obj-$(if $(CONFIG_GCRYPT),n,$(if $(CONFIG_GNUTLS),n,$(CONFIG_RNG_NONE))) += random-none.o
util-obj-$(if $(CONFIG_GCRYPT),n,$(if $(CONFIG_GNUTLS),n,$(if $(CONFIG_RNG_NONE),n,y))) += random-platform.o
util-obj-y += aes.o init.o