Merge tag 'ak-pull-request' of https://gitlab.com/berrange/qemu into staging

Merge tag 'ak-pull-request' of https://gitlab.com/berrange/qemu into staging

Merge asymmetric cipher crypto support

This extends the internal crypto APIs to support the use of asymmetric
ciphers.

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# gpg: Signature made Thu 26 May 2022 03:43:36 AM PDT
# gpg:                using RSA key DAF3A6FDB26B62912D0E8E3FBE86EBB415104FDF
# gpg: Good signature from "Daniel P. Berrange <dan@berrange.com>" [full]
# gpg:                 aka "Daniel P. Berrange <berrange@redhat.com>" [full]

* tag 'ak-pull-request' of https://gitlab.com/berrange/qemu:
  tests/crypto: Add test suite for RSA keys
  test/crypto: Add test suite for crypto akcipher
  crypto: Implement RSA algorithm by gcrypt
  crypto: Implement RSA algorithm by hogweed
  crypto: add ASN.1 DER decoder
  crypto: Introduce akcipher crypto class
  qapi: crypto-akcipher: Introduce akcipher types to qapi

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>