crypto: Introduce akcipher crypto class

Introduce new akcipher crypto class 'QCryptoAkCIpher', which supports
basic asymmetric operations: encrypt, decrypt, sign and verify.

Suggested by Daniel P. Berrangé, also add autoptr cleanup for the new
class. Thanks to Daniel!

Co-developed-by: lei he <>
Signed-off-by: lei he <>
Signed-off-by: zhenwei pi <>
Signed-off-by: Daniel P. Berrangé <>
4 files changed