go.chromium.org/luci@v0.0.0-20240309015107-7cdc2e660f33/server/auth/deprecated/common_test.go (about)

     1  // Copyright 2015 The LUCI Authors.
     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  
    15  package deprecated
    16  
    17  import (
    18  	"context"
    19  	"crypto/rsa"
    20  	"encoding/base64"
    21  	"encoding/binary"
    22  	"encoding/json"
    23  	"fmt"
    24  
    25  	"go.chromium.org/luci/server/auth/openid"
    26  	"go.chromium.org/luci/server/auth/signing/signingtest"
    27  )
    28  
    29  func jwksForTest(keyID string, pubKey *rsa.PublicKey) *openid.JSONWebKeySetStruct {
    30  	modulus := pubKey.N.Bytes()
    31  	exp := []byte{0, 0, 0, 0}
    32  	binary.BigEndian.PutUint32(exp, uint32(pubKey.E))
    33  	return &openid.JSONWebKeySetStruct{
    34  		Keys: []openid.JSONWebKeyStruct{
    35  			{
    36  				Kty: "RSA",
    37  				Alg: "RS256",
    38  				Use: "sig",
    39  				Kid: keyID,
    40  				N:   base64.RawURLEncoding.EncodeToString(modulus),
    41  				E:   base64.RawURLEncoding.EncodeToString(exp),
    42  			},
    43  		},
    44  	}
    45  }
    46  
    47  func jwtForTest(ctx context.Context, body []byte, keyID string, signer *signingtest.Signer) string {
    48  	b64hdr := base64.RawURLEncoding.EncodeToString([]byte(
    49  		fmt.Sprintf(`{"alg": "RS256","kid": "%s"}`, keyID)))
    50  	b64bdy := base64.RawURLEncoding.EncodeToString(body)
    51  	_, sig, err := signer.SignBytes(ctx, []byte(b64hdr+"."+b64bdy))
    52  	if err != nil {
    53  		panic(err)
    54  	}
    55  	return b64hdr + "." + b64bdy + "." + base64.RawURLEncoding.EncodeToString(sig)
    56  }
    57  
    58  func idTokenForTest(ctx context.Context, tok *openid.IDToken, keyID string, signer *signingtest.Signer) string {
    59  	body, err := json.Marshal(tok)
    60  	if err != nil {
    61  		panic(err)
    62  	}
    63  	return jwtForTest(ctx, body, keyID, signer)
    64  }