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// Copyright 2020 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package streamingaead_test
import (
"bytes"
"io"
"testing"
"github.com/tink-crypto/tink-go/v2/keyset"
"github.com/tink-crypto/tink-go/v2/streamingaead"
tinkpb "github.com/tink-crypto/tink-go/v2/proto/tink_go_proto"
)
func TestKeyTemplates(t *testing.T) {
var testCases = []struct {
name string
template *tinkpb.KeyTemplate
}{
{
name: "AES128_GCM_HKDF_4KB",
template: streamingaead.AES128GCMHKDF4KBKeyTemplate(),
},
{
name: "AES128_GCM_HKDF_1MB",
template: streamingaead.AES128GCMHKDF1MBKeyTemplate(),
},
{
name: "AES256_GCM_HKDF_4KB",
template: streamingaead.AES256GCMHKDF4KBKeyTemplate(),
}, {
name: "AES256_GCM_HKDF_1MB",
template: streamingaead.AES256GCMHKDF1MBKeyTemplate(),
}, {
name: "AES128_CTR_HMAC_SHA256_4KB",
template: streamingaead.AES128CTRHMACSHA256Segment4KBKeyTemplate(),
},
{
name: "AES128_CTR_HMAC_SHA256_1MB",
template: streamingaead.AES128CTRHMACSHA256Segment1MBKeyTemplate(),
},
{
name: "AES256_CTR_HMAC_SHA256_4KB",
template: streamingaead.AES256CTRHMACSHA256Segment4KBKeyTemplate(),
},
{
name: "AES256_CTR_HMAC_SHA256_1MB",
template: streamingaead.AES256CTRHMACSHA256Segment1MBKeyTemplate(),
},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
handle, err := keyset.NewHandle(tc.template)
if err != nil {
t.Fatalf("keyset.NewHandle(template) failed: %v", err)
}
primitive, err := streamingaead.New(handle)
if err != nil {
t.Fatalf("aead.New(handle) failed: %v", err)
}
plaintext := []byte("some data to encrypt")
aad := []byte("extra data to authenticate")
buf := &bytes.Buffer{}
w, err := primitive.NewEncryptingWriter(buf, aad)
if err != nil {
t.Fatalf("primitive.NewEncryptingWriter(buf, aad) failed: %v", err)
}
if _, err := w.Write(plaintext); err != nil {
t.Fatalf("w.Write(plaintext) failed: %v", err)
}
if err := w.Close(); err != nil {
t.Fatalf("w.Close() failed: %v", err)
}
r, err := primitive.NewDecryptingReader(buf, aad)
if err != nil {
t.Fatalf("primitive.NewDecryptingReader(buf, aad) failed: %v", err)
}
decrypted, err := io.ReadAll(r)
if err != nil {
t.Fatalf("io.ReadAll(r) failed: %v", err)
}
if !bytes.Equal(decrypted, plaintext) {
t.Errorf("decrypted data doesn't match plaintext, got: %q, want: ''", decrypted)
}
})
}
}
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