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crypto: introduce new module for TLS anonymous credentials

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Introduce a QCryptoTLSCredsAnon class which is used to
manage anonymous TLS credentials. Use of this class is
generally discouraged since it does not offer strong
security, but it is required for backwards compatibility
with the current VNC server implementation.

Simple example CLI configuration:

 $QEMU -object tls-creds-anon,id=tls0,endpoint=server

Example using pre-created diffie-hellman parameters

 $QEMU -object tls-creds-anon,id=tls0,endpoint=server,\
               dir=/path/to/creds/dir

The 'id' value in the -object args will be used to associate the
credentials with the network services. For example, when the VNC
server is later converted it would use

 $QEMU -object tls-creds-anon,id=tls0,.... \
       -vnc 127.0.0.1:1,tls-creds=tls0

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Daniel P. Berrange 2015-03-13 17:39:26 +00:00
parent a090187de1
commit e00adf6c3e
5 changed files with 359 additions and 0 deletions
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@ -1670,3 +1670,6 @@ oss_invalid_available_size(int size, int bufsize) "Invalid available size, size=
# crypto/tlscreds.c
qcrypto_tls_creds_load_dh(void *creds, const char *filename) "TLS creds load DH creds=%p filename=%s"
qcrypto_tls_creds_get_path(void *creds, const char *filename, const char *path) "TLS creds path creds=%p filename=%s path=%s"
# crypto/tlscredsanon.c
qcrypto_tls_creds_anon_load(void *creds, const char *dir) "TLS creds anon load creds=%p dir=%s"