The validation assertion declares that a certain revision for a snap that is gated by another snap has been validated for a given series. It is closely related to the snap-declaration assertion.
Validation assertion fields
The following fields can be used in a validation assertion:
type: validation authority-id: <authority account-id> revision: <int> series: <list of series which should accept this assertion> snap-id: <snap-id> approved-snap-id: <snap-id> approved-snap-revision: <int> timestamp: <UTC datetime> revoked: <bool> sign-key-sha3-384: <key id> # Encoded key id of signing key <signature> # Encoded signature
The index is the tuple <
This assertion indicates that refreshing to revision number
revision of snap
series, has been approved by
authority-id, given that
snap-id the snap that was gating the update also has
authority-id as the owner.
approved-snap-id must be part of the refresh-control list in the snap-declaration assertion of
snap-id for this to be enforced.
This means the recommended revision for
approved-snap-id in a system that has
snap-id installed is the one in the
revision header. There will be no automatic installation of newer revisions until a validation with a newer revision is released by the store. Note however that this does not forbid a forced update by the device owner.
The validation can be revoked by using the optional flag
See Assertion format for more details on fields common to most assertions.
The following is an example validation assertion:
type: validation authority-id: canonical revision: 1 series: 16 snap-id: kkOOPWIl0sF7FoSA0KRTt83b1eoynkBa approved-snap-id: JIpOmfrI0JpaN3uNQQgNv5x3fW06nOYX approved-snap-revision: 37 timestamp: 2017-02-20T10:23:51+00:00 sign-key-sha3-384: C9mhxTpowHTXM3HOwgg3ZCX-WD05CczlNMdrCBbl2l0d4J_CcjYBS8NQpI-TtQlL AcLBXAQAAQoABgUCWKrI2QAKCRC03QWqtcJXZRFbEACDcCy15wPNpjcJyFYEt05A4WWzGPQMlC09 1lv62WAancrRaenLOi3xmeIPgsuPk9xKgrn16dBlytCK5GUHiHsafR+34mt/ridaVSKY5zCIkvcJ mgIH3jMB1RZiY2gtlxXD14G+nK67PKvM6BBfMdBB9ItLAdh5LM3ycbE/8ZqY7aYuTLKfOIPYGjUY 2rRlOaCggeXsru9wbnNwCwGBHZ9ltBgsISZQiSMGnH38OMNgjNOQy0PIB+elmYLEoTKXc+qU1x5w /R8cwUzWwcd56Ty/WpGdAfBrpO4/afFgVtGrixEWtVigIoIigPb7wytmQYcnl/Y0bQMVNZiYFQdF tZ9MGGTzA/ieRrjJHOQEj+VfDA4rHU2vUTGlZtseukhGNhSNgI52zhDyynhB/Hxy1t0rJ8eJju2a G27p2GuJvGrxfjxcge47LZ0WJaKe9R82/AsrFLlnJ4d29K0RUPnYohwlDwWTAOTE2SAz6/kIRNIv sOuHdIXIMarsbbRIG1kC++Rl/XI9jWvoM++fT1kHCjXgKfi+CELo8YcOKHPbjWSd7DiAmSnR5I6f ovydzkMPTzzbsxyKePQHicKiqPs4dSfcEnPIGTpvgpGE4WEI3zYGYmsGgFOJqEnuy0IvVRCtJXU4 yk/p3Jqwss3W0YbfypCWrvMBxho1mN5SRhaQv3r+kw==