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Pre-Shared Keys (PSK) is a simpler mechanism for enabling TLS
connections than using certificates. It requires only a simple secret
key:
$ mkdir -m 0700 /tmp/keys
$ psktool -u rjones -p /tmp/keys/keys.psk
$ cat /tmp/keys/keys.psk
rjones:d543770c15ad93d76443fb56f501a31969235f47e999720ae8d2336f6a13fcbc
The key can be secretly shared between clients and servers. Clients
must specify the directory containing the "keys.psk" file and a
username (defaults to "qemu"). Servers must specify only the
directory.
Example NBD client:
$ qemu-img info \
--object tls-creds-psk,id=tls0,dir=/tmp/keys,username=rjones,endpoint=client \
--image-opts \
file.driver=nbd,file.host=localhost,file.port=10809,file.tls-creds=tls0,file.export=/
Example NBD server using qemu-nbd:
$ qemu-nbd -t -x / \
--object tls-creds-psk,id=tls0,endpoint=server,dir=/tmp/keys \
--tls-creds tls0 \
image.qcow2
Example NBD server using nbdkit:
$ nbdkit -n -e / -fv \
--tls=on --tls-psk=/tmp/keys/keys.psk \
file file=disk.img
Signed-off-by: Richard W.M. Jones <rjones@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
24 lines
1.7 KiB
Plaintext
24 lines
1.7 KiB
Plaintext
# See docs/devel/tracing.txt for syntax documentation.
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# crypto/tlscreds.c
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qcrypto_tls_creds_load_dh(void *creds, const char *filename) "TLS creds load DH creds=%p filename=%s"
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qcrypto_tls_creds_get_path(void *creds, const char *filename, const char *path) "TLS creds path creds=%p filename=%s path=%s"
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# crypto/tlscredsanon.c
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qcrypto_tls_creds_anon_load(void *creds, const char *dir) "TLS creds anon load creds=%p dir=%s"
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# crypto/tlscredspsk.c
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qcrypto_tls_creds_psk_load(void *creds, const char *dir) "TLS creds psk load creds=%p dir=%s"
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# crypto/tlscredsx509.c
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qcrypto_tls_creds_x509_load(void *creds, const char *dir) "TLS creds x509 load creds=%p dir=%s"
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qcrypto_tls_creds_x509_check_basic_constraints(void *creds, const char *file, int status) "TLS creds x509 check basic constraints creds=%p file=%s status=%d"
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qcrypto_tls_creds_x509_check_key_usage(void *creds, const char *file, int status, int usage, int critical) "TLS creds x509 check key usage creds=%p file=%s status=%d usage=%d critical=%d"
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qcrypto_tls_creds_x509_check_key_purpose(void *creds, const char *file, int status, const char *usage, int critical) "TLS creds x509 check key usage creds=%p file=%s status=%d usage=%s critical=%d"
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qcrypto_tls_creds_x509_load_cert(void *creds, int isServer, const char *file) "TLS creds x509 load cert creds=%p isServer=%d file=%s"
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qcrypto_tls_creds_x509_load_cert_list(void *creds, const char *file) "TLS creds x509 load cert list creds=%p file=%s"
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# crypto/tlssession.c
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qcrypto_tls_session_new(void *session, void *creds, const char *hostname, const char *aclname, int endpoint) "TLS session new session=%p creds=%p hostname=%s aclname=%s endpoint=%d"
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qcrypto_tls_session_check_creds(void *session, const char *status) "TLS session check creds session=%p status=%s"
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