github.com/google/trillian-examples@v0.0.0-20240520080811-0d40d35cef0e/binary_transparency/firmware/internal/crypto/signature_test.go (about)

     1  // Copyright 2020 Google LLC. All Rights Reserved.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //	http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  package crypto
    15  
    16  import (
    17  	"testing"
    18  
    19  	"github.com/google/trillian-examples/binary_transparency/firmware/api"
    20  )
    21  
    22  func TestSignatureRoundTrip(t *testing.T) {
    23  	for _, test := range []struct {
    24  		desc      string
    25  		signbody  string
    26  		verifbody string
    27  		claimant  Claimant
    28  		wantErr   bool
    29  	}{
    30  		{
    31  			desc:      "Successful Signature Verification",
    32  			signbody:  "My Test Message",
    33  			verifbody: "My Test Message",
    34  			claimant:  Publisher,
    35  		}, {
    36  			desc:      "Unsuccessful Signature Verification",
    37  			signbody:  "My Test Message",
    38  			verifbody: "My Test1 Message",
    39  			claimant:  Publisher,
    40  			wantErr:   true,
    41  		},
    42  		{
    43  			desc:      "Successful Signature Verification malware",
    44  			signbody:  "My Test Message",
    45  			verifbody: "My Test Message",
    46  			claimant:  AnnotatorMalware,
    47  		}, {
    48  			desc:      "Unsuccessful Signature Verification malware",
    49  			signbody:  "My Test Message",
    50  			verifbody: "My Test1 Message",
    51  			claimant:  AnnotatorMalware,
    52  			wantErr:   true,
    53  		},
    54  	} {
    55  		t.Run(test.desc, func(t *testing.T) {
    56  			msg := []byte(test.signbody)
    57  			sign, err := test.claimant.SignMessage(api.FirmwareMetadataType, msg)
    58  			if err != nil {
    59  				t.Fatalf("failed to marshal statement: %v", err)
    60  			}
    61  
    62  			// Now Verify the signature
    63  			msg = []byte(test.verifbody)
    64  			err = test.claimant.VerifySignature('f', msg, sign)
    65  			switch {
    66  			case err != nil && !test.wantErr:
    67  				t.Fatalf("Got unexpected error %q", err)
    68  			case err == nil && test.wantErr:
    69  				t.Fatal("Got no error, but wanted error")
    70  			case err != nil && test.wantErr:
    71  				// expected error
    72  			default:
    73  				//fall through
    74  			}
    75  		})
    76  	}
    77  }