ExternalVendorCode/go-attestation
1
0
Fork 0
mirror of https://github.com/google/go-attestation.git synced 2025-04-15 15:06:43 +00:00
Code Issues Actions 2 Packages Projects Releases Wiki Activity

Handle platform certificates that only provide a single property (#168)

Browse Source 
Handle platform certificates that only provide a single property

The spec states that the PlatformProperties field of the
PlatformConfiguration attribute should be a sequence of key value pairs.
However, it seems that if there's only a single property present, it's
sometimes being stored as a bare key value pair rather than a sequence
with a single entry. Work around that.
This commit is contained in:
Matthew Garrett 2020-05-29 17:24:06 -07:00 committed by GitHub
parent fbd936aac7
commit 42b1d805de
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 15 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
attributecert/attributecert.go
View File

@ -448,6 +448,13 @@ type PlatformConfigurationV2 struct {
PlatformPropertiesURI URIReference `asn1:"optional,tag:3"`
}
type PlatformConfigurationV2Workaround struct {
ComponentIdentifiers []ComponentIdentifierV2 `asn1:"optional,tag:0"`
ComponentIdentifiersURI URIReference `asn1:"optional,tag:1"`
PlatformProperty Property `asn1:"optional,tag:2"`
PlatformPropertiesURI URIReference `asn1:"optional,tag:3"`
}
type ComponentIdentifierV1 struct {
ComponentClass []byte `asn1:"optional"`
ComponentManufacturer string
@ -580,7 +587,14 @@ func parseAttributeCertificate(in *attributeCertificate) (*AttributeCertificate,
case attribute.ID.Equal(oidTcgPlatformConfigurationV2):
var platformConfiguration PlatformConfigurationV2
if _, err := asn1.Unmarshal(attribute.RawValues[0].FullBytes, &platformConfiguration); err != nil {
return nil, err
var workaround PlatformConfigurationV2Workaround
if _, err := asn1.Unmarshal(attribute.RawValues[0].FullBytes, &workaround); err != nil {
return nil, err
}
platformConfiguration.ComponentIdentifiers = workaround.ComponentIdentifiers
platformConfiguration.ComponentIdentifiersURI = workaround.ComponentIdentifiersURI
platformConfiguration.PlatformProperties = append(platformConfiguration.PlatformProperties, workaround.PlatformProperty)
platformConfiguration.PlatformPropertiesURI = workaround.PlatformPropertiesURI
}
for _, component := range platformConfiguration.ComponentIdentifiers {
t := Component{