ed25519_wycheproof_test.go

     1  // Copyright 2026 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  package ed25519_test
     5  
     6  import (
     7  	"crypto/ed25519"
     8  	"crypto/internal/cryptotest/wycheproof"
     9  	"crypto/x509"
    10  	"fmt"
    11  	"testing"
    12  )
    13  
    14  func TestEd25519Wycheproof(t *testing.T) {
    15  	file := "ed25519_test.json"
    16  	var testdata wycheproof.EddsaVerifySchemaV1Json
    17  	wycheproof.LoadVectorFile(t, file, &testdata)
    18  
    19  	parseSPKIPub := func(p []byte) (ed25519.PublicKey, error) {
    20  		pubKeyAny, err := x509.ParsePKIXPublicKey(p)
    21  		if err != nil {
    22  			return nil, err
    23  		}
    24  		pub, ok := pubKeyAny.(ed25519.PublicKey)
    25  		if !ok {
    26  			return nil, fmt.Errorf("unexpected key type %T", pubKeyAny)
    27  		}
    28  		return pub, nil
    29  	}
    30  
    31  	for tgIdx, tg := range testdata.TestGroups {
    32  		pubkey, err := parseSPKIPub(wycheproof.MustDecodeHex(tg.PublicKeyDer))
    33  		if err != nil {
    34  			t.Fatalf("test group %d invalid DER encoded public key: %v", tgIdx+1, err)
    35  		}
    36  
    37  		for _, tv := range tg.Tests {
    38  			t.Run(wycheproof.TestName(file, tv), func(t *testing.T) {
    39  				t.Parallel()
    40  
    41  				got := ed25519.Verify(
    42  					pubkey, wycheproof.MustDecodeHex(tv.Msg), wycheproof.MustDecodeHex(tv.Sig))
    43  				want := wycheproof.ShouldPass(t, tv.Result, tv.Flags, nil)
    44  				if got != want {
    45  					t.Errorf("Verify wanted success: %t", want)
    46  				}
    47  			})
    48  		}
    49  	}
    50  }
    51
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