8000 add test-vector-based unit test for KDFa and KDFe by chrisfenner · Pull Request #400 · google/go-tpm · GitHub
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add test-vector-based unit test for KDFa and KDFe #400

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add test-vector-based unit test for KDFa and KDFe #400

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24 changes: 24 additions & 0 deletions tpm2/test/kdfa_test.go
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Original file line number Diff line number Diff line change
@@ -0,0 +1,24 @@
package tpm2test

import (
"bytes"
"testing"

"github.com/google/go-tpm/tpm2"
"github.com/google/go-tpm/tpm2/test/testvectors"
)

func TestKDFa(t *testing.T) {
for _, testcase := range testvectors.KDFa(t) {
h, err := tpm2.TPMIAlgHash(testcase.HashAlg).Hash()
if err != nil {
t.Fatalf("%v", err)
}
t.Run(testcase.Name, func(t *testing.T) {
result := tpm2.KDFa(h, testcase.Key, testcase.Label, testcase.ContextU, testcase.ContextV, testcase.Bits)
if !bytes.Equal(result, testcase.Result) {
t.Errorf("KDFa() = %x\nwant %x", result, testcase.Result)
}
})
}
}
24 changes: 24 additions & 0 deletions tpm2/test/kdfe_test.go
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Original file line number Diff line number Diff line change
@@ -0,0 +1,24 @@
package tpm2test

import (
"bytes"
"testing"

"github.com/google/go-tpm/tpm2"
"github.com/google/go-tpm/tpm2/test/testvectors"
)

func TestKDFe(t *testing.T) {
for _, testcase := range testvectors.KDFe(t) {
h, err := tpm2.TPMIAlgHash(testcase.HashAlg).Hash()
if err != nil {
t.Fatalf("%v", err)
}
t.Run(testcase.Name, func(t *testing.T) {
result := tpm2.KDFe(h, testcase.Z, testcase.Label, testcase.ContextU, testcase.ContextV, testcase.Bits)
if !bytes.Equal(result, testcase.Result) {
t.Errorf("KDFe() = %x\nwant %x", result, testcase.Result)
}
})
}
}
52 changes: 52 additions & 0 deletions tpm2/test/testvectors/testvectors.go
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Expand Up @@ -71,3 +71,55 @@ func RSALabeledEncapsulation(t *testing.T) []RSALabeledEncapsTestCase {

return testCases
}

//go:embed kdfa.json
var kdfaJSON []byte

// KDFaTestCase is a test case for KDFa.
type KDFaTestCase struct {
Name string
HashAlg uint16
Key hexBytes
Label string
ContextU hexBytes
ContextV hexBytes
Bits int
Result hexBytes
}

func KDFa(t *testing.T) []KDFaTestCase {
t.Helper()

var testCases []KDFaTestCase
if err := json.Unmarshal(kdfaJSON, &testCases); err != nil {
t.Fatalf("could not unmarshal JSON: %v", err)
}

return testCases
}

//go:embed kdfe.json
var kdfeJSON []byte

// KDFeTestCase is a test case for KDFe.
type KDFeTestCase struct {
Name string
HashAlg uint16
Z hexBytes
Label string
ContextU hexBytes
ContextV hexBytes
Bits int
Result hexBytes
}

func KDFe(t *testing.T) []KDFeTestCase {
t.Helper()

var testCases []KDFeTestCase
if err := json.Unmarshal(kdfeJSON, &testCases); err != nil {
t.Fatalf("could not unmarshal JSON: %v", err)
}

return testCases
}
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