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// Copyright 2025 OpenPubkey
//
// 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.
//
// SPDX-License-Identifier: Apache-2.0
package testutils
import (
"crypto"
"crypto/ecdsa"
"crypto/ed25519"
"encoding/json"
"testing"
"github.com/lestrrat-go/jwx/v2/jwa"
"github.com/lestrrat-go/jwx/v2/jwk"
"github.com/stretchr/testify/require"
)
const es256keyPairJSON = `{
"crv": "P-256",
"d": "VkLzE5IzCxLiD3QzSiijY5CzpU0gZ7h8NECFL_MoyFQ",
"kty": "EC",
"x": "ukpv3fU6tqQKaUwcdBAQoK3IHvJIW__9yNd1oR7qvZc",
"y": "nBBxXrx0Nziwg_evfUMUUgnGKKUf2ATpWG9EojnUoU4",
"alg": "ES256"
}`
const ed25519keyPairJSON = `{
"crv": "Ed25519",
"d": "dvrQIDJN2SwU0xUxCux5Cdslv0N9tP6jpl7J_kqXcXA",
"kty": "OKP",
"x": "fmkTfA6VJtkaSZL0j9m-DRke3K9xMxxabuqLOPa-G7E"
}`
// DeterministicTestKeyPair generates a deterministic key pair for testing purposes.
// Only use in tests. This would be wildly insecure in production as the secret key is a public value.
func DeterministicTestKeyPair(t *testing.T, alg string) crypto.Signer {
switch alg {
case jwa.ES256.String():
kp, err := jwk.ParseKey([]byte(es256keyPairJSON))
require.NoError(t, err)
var privKey ecdsa.PrivateKey
err = kp.Raw(&privKey)
require.NoError(t, err)
return &privKey
case jwa.EdDSA.String():
kp, err := jwk.ParseKey([]byte(ed25519keyPairJSON))
require.NoError(t, err)
var privKey ed25519.PrivateKey
err = kp.Raw(&privKey)
require.NoError(t, err)
return &privKey
default:
t.Fatalf("unsupported algorithm for deterministic key pair: %s", alg)
return nil
}
}
// NewTestKeyPairs is used for creating JSON representations of JWKs for tests.
// This is how we generate the embedded JWKs for our unittests.
func NewTestKeyPairs(t *testing.T, signer crypto.Signer) []byte {
privJWK, err := jwk.FromRaw(signer)
require.NoError(t, err)
jwkJson, err := json.MarshalIndent(privJWK, "", " ")
require.NoError(t, err)
return jwkJson
}
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