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Verify(): ensure that the hash function is available (#204)

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Paweł Szałachowski 2021-03-09 09:30:11 -08:00 committed by GitHub
parent 440d34a877
commit 1379a4f766
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2 changed files with 12 additions and 0 deletions
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3
attest/certification.go
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@ -150,6 +150,9 @@ func (p *CertificationParameters) Verify(opts VerifyOpts) error {
if !ok {
return fmt.Errorf("Only RSA verification keys are supported")
}
if !opts.Hash.Available() {
return fmt.Errorf("hash function is unavailable")
}
hsh := opts.Hash.New()
hsh.Write(p.CreateAttestation)

9
attest/certification_test.go
View File

@ -97,6 +97,15 @@ func TestCertificationParametersTPM20(t *testing.T) {
},
err: cmpopts.AnyError,
},
{
name: "unavailable hash function",
p: &skCertParams,
opts: VerifyOpts{
Public: correctOpts.Public,
Hash: crypto.BLAKE2b_384,
},
err: cmpopts.AnyError,
},
{
name: "modified Public",
p: &CertificationParameters{