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Group common test utililty in an internal package
PiperOrigin-RevId: 713949926 Change-Id: Ief74f897f2397fbf55c9e463b0ea8468fd39d7d7
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,44 @@ | ||
| // Copyright 2025 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 testutil provides testing utilities for AEAD primitives. | ||
| package testutil | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "fmt" | ||
|
|
||
| "github.com/tink-crypto/tink-go/v2/subtle/random" | ||
| "github.com/tink-crypto/tink-go/v2/tink" | ||
| ) | ||
|
|
||
| // EncryptDecrypt encrypts and decrypts random data using the given AEAD | ||
| // primitives. | ||
| func EncryptDecrypt(encryptor, decryptor tink.AEAD) error { | ||
| // Try to encrypt and decrypt random data. | ||
| pt := random.GetRandomBytes(32) | ||
| aad := random.GetRandomBytes(32) | ||
| ct, err := encryptor.Encrypt(pt, aad) | ||
| if err != nil { | ||
| return fmt.Errorf("encryptor.Encrypt() err = %v, want nil", err) | ||
| } | ||
| decrypted, err := decryptor.Decrypt(ct, aad) | ||
| if err != nil { | ||
| return fmt.Errorf("decryptor.Decrypt() err = %v, want nil", err) | ||
| } | ||
| if !bytes.Equal(decrypted, pt) { | ||
| return fmt.Errorf("decryptor.Decrypt() = %v, want %v", decrypted, pt) | ||
| } | ||
| return nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,57 @@ | ||
| // Copyright 2025 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 testutil_test | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "testing" | ||
|
|
||
| "github.com/tink-crypto/tink-go/v2/aead/internal/testutil" | ||
| "github.com/tink-crypto/tink-go/v2/aead/subtle" | ||
| "github.com/tink-crypto/tink-go/v2/subtle/random" | ||
| tinktestutil "github.com/tink-crypto/tink-go/v2/testutil" | ||
| ) | ||
|
|
||
| func TestEncryptDecryptFailsWithFailingAEAD(t *testing.T) { | ||
| failingAEAD := tinktestutil.NewAlwaysFailingAead(fmt.Errorf("test error")) | ||
| a, err := subtle.NewAESGCM(random.GetRandomBytes(32)) | ||
| if err != nil { | ||
| t.Fatalf("subtle.NewAESGCM() err = %v, want nil", err) | ||
| } | ||
| if err := testutil.EncryptDecrypt(failingAEAD, a); err == nil { | ||
| t.Errorf("EncryptDecrypt(failingAEAD, a) err = nil, want non-nil") | ||
| } | ||
| if err := testutil.EncryptDecrypt(a, failingAEAD); err == nil { | ||
| t.Errorf("EncryptDecrypt(a, failingAEAD) err = nil, want non-nil") | ||
| } | ||
| if err := testutil.EncryptDecrypt(failingAEAD, failingAEAD); err == nil { | ||
| t.Errorf("EncryptDecrypt(failingAEAD, failingAEAD) err = nil, want non-nil") | ||
| } | ||
| } | ||
|
|
||
| func TestEncryptDecryptWorks(t *testing.T) { | ||
| keyBytes := random.GetRandomBytes(32) | ||
| encryptor, err := subtle.NewAESGCM(keyBytes) | ||
| if err != nil { | ||
| t.Fatalf("subtle.NewAESGCM() err = %v, want nil", err) | ||
| } | ||
| decryptor, err := subtle.NewAESGCM(keyBytes) | ||
| if err != nil { | ||
| t.Fatalf("subtle.NewAESGCM() err = %v, want nil", err) | ||
| } | ||
| if err := testutil.EncryptDecrypt(encryptor, decryptor); err != nil { | ||
| t.Fatalf("subtle.NewAESGCM() err = %v, want nil", err) | ||
| } | ||
| } |
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