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* Updated v1 to support latest version of go-tuf Signed-off-by: Fredrik Skogman <kommendorkapten@github.com> * Udated documentation to be correct Signed-off-by: Fredrik Skogman <kommendorkapten@github.com> * Update sign_test.go swap out deprecated lib Signed-off-by: Bob Callaway <bobcallaway@users.noreply.github.com> * Update keys.go swap out deprecated lib Signed-off-by: Bob Callaway <bobcallaway@users.noreply.github.com> * Update sign_test.go fix gofmt issue Signed-off-by: Bob Callaway <bobcallaway@users.noreply.github.com> * Update go.mod go mod tidy Signed-off-by: Bob Callaway <bobcallaway@users.noreply.github.com> * Update validate-release.yml free up space ahead of running goreleaser Signed-off-by: Bob Callaway <bobcallaway@users.noreply.github.com> --------- Signed-off-by: Fredrik Skogman <kommendorkapten@github.com> Signed-off-by: Bob Callaway <bobcallaway@users.noreply.github.com> Co-authored-by: Bob Callaway <bobcallaway@users.noreply.github.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,232 @@ | ||
| // | ||
| // Copyright 2024 The Sigstore Authors. | ||
| // | ||
| // 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. | ||
|
|
||
| // For backwards compatibility | ||
| // Verbatim copy of https://github.com/sigstore/sigstore/blob/v1.4.5/pkg/tuf/policy.go | ||
|
|
||
| package cli | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "crypto/sha256" | ||
| "encoding/hex" | ||
| "encoding/json" | ||
| "errors" | ||
| "fmt" | ||
| "sync" | ||
| "time" | ||
|
|
||
| cjson "github.com/secure-systems-lab/go-securesystemslib/cjson" | ||
| ) | ||
|
|
||
| type Signed struct { | ||
| Signed json.RawMessage `json:"signed"` | ||
| Signatures []Signature `json:"signatures"` | ||
| } | ||
|
|
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| type Signature struct { | ||
| KeyID string `json:"keyid"` | ||
| Signature string `json:"sig"` | ||
| Cert string `json:"cert,omitempty"` | ||
| } | ||
|
|
||
| type Key struct { | ||
| Type string `json:"keytype"` | ||
| Scheme string `json:"scheme"` | ||
| Algorithms []string `json:"keyid_hash_algorithms,omitempty"` | ||
| Value json.RawMessage `json:"keyval"` | ||
|
|
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| id string | ||
| idOnce sync.Once | ||
| } | ||
|
|
||
| func (k *Key) ID() string { | ||
| k.idOnce.Do(func() { | ||
| data, _ := cjson.EncodeCanonical(k) | ||
| digest := sha256.Sum256(data) | ||
| k.id = hex.EncodeToString(digest[:]) | ||
| }) | ||
| return k.id | ||
| } | ||
|
|
||
| func (k *Key) ContainsID(id string) bool { | ||
| return id == k.ID() | ||
| } | ||
|
|
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| type Root struct { | ||
| Type string `json:"_type"` | ||
| SpecVersion string `json:"spec_version"` | ||
| Version int `json:"version"` | ||
| Expires time.Time `json:"expires"` | ||
| Keys map[string]*Key `json:"keys"` | ||
| Roles map[string]*Role `json:"roles"` | ||
| Namespace string `json:"namespace"` | ||
|
|
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| ConsistentSnapshot bool `json:"consistent_snapshot"` | ||
| } | ||
|
|
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| func NewRoot() *Root { | ||
| return &Root{ | ||
| Type: "root", | ||
| SpecVersion: "1.0", | ||
| Version: 1, | ||
| // Default expires in 3 months | ||
| Expires: time.Now().AddDate(0, 3, 0).UTC().Round(time.Second), | ||
| Keys: make(map[string]*Key), | ||
| Roles: make(map[string]*Role), | ||
| ConsistentSnapshot: true, | ||
| } | ||
| } | ||
|
|
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| func (r *Root) AddKey(key *Key) bool { | ||
| changed := false | ||
| if _, ok := r.Keys[key.ID()]; !ok { | ||
| changed = true | ||
| r.Keys[key.ID()] = key | ||
| } | ||
|
|
||
| return changed | ||
| } | ||
|
|
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| type Role struct { | ||
| KeyIDs []string `json:"keyids"` | ||
| Threshold int `json:"threshold"` | ||
| } | ||
|
|
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| func (r *Role) AddKeysWithThreshold(keys []*Key, threshold int) bool { | ||
| roleIDs := make(map[string]struct{}) | ||
| for _, id := range r.KeyIDs { | ||
| roleIDs[id] = struct{}{} | ||
| } | ||
| changed := false | ||
| for _, key := range keys { | ||
| if _, ok := roleIDs[key.ID()]; !ok { | ||
| changed = true | ||
| r.KeyIDs = append(r.KeyIDs, key.ID()) | ||
| } | ||
| } | ||
| r.Threshold = threshold | ||
| return changed | ||
| } | ||
|
|
||
| func (r *Root) Marshal() (*Signed, error) { | ||
| // Marshals the Root into a Signed type | ||
| b, err := cjson.EncodeCanonical(r) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return &Signed{Signed: b}, nil | ||
| } | ||
|
|
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| func (r *Root) ValidKey(key *Key, role string) (string, error) { | ||
| // Checks if id is a valid key for role by matching the identity and issuer if specified. | ||
| // Returns the key ID or an error if invalid key. | ||
| fulcioKeyVal, err := GetFulcioKeyVal(key) | ||
| if err != nil { | ||
| return "", fmt.Errorf("error parsing signer key: %w", err) | ||
| } | ||
|
|
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| result := "" | ||
| for keyid, rootKey := range r.Keys { | ||
| fulcioRootKeyVal, err := GetFulcioKeyVal(rootKey) | ||
| if err != nil { | ||
| return "", fmt.Errorf("error parsing root key: %w", err) | ||
| } | ||
| if fulcioKeyVal.Identity == fulcioRootKeyVal.Identity { | ||
| if fulcioRootKeyVal.Issuer == "" || fulcioRootKeyVal.Issuer == fulcioKeyVal.Issuer { | ||
| result = keyid | ||
| break | ||
| } | ||
| } | ||
| } | ||
| if result == "" { | ||
| return "", errors.New("key not found in root keys") | ||
| } | ||
|
|
||
| rootRole, ok := r.Roles[role] | ||
| if !ok { | ||
| return "", errors.New("invalid role") | ||
| } | ||
| for _, id := range rootRole.KeyIDs { | ||
| if id == result { | ||
| return result, nil | ||
| } | ||
| } | ||
| return "", errors.New("key not found in role") | ||
| } | ||
|
|
||
| func (s *Signed) JSONMarshal(prefix, indent string) ([]byte, error) { | ||
| // Marshals Signed with prefix and indent. | ||
| b, err := cjson.EncodeCanonical(s) | ||
| if err != nil { | ||
| return []byte{}, err | ||
| } | ||
|
|
||
| var out bytes.Buffer | ||
| if err := json.Indent(&out, b, prefix, indent); err != nil { | ||
| return []byte{}, err | ||
| } | ||
|
|
||
| return out.Bytes(), nil | ||
| } | ||
|
|
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| func (s *Signed) AddOrUpdateSignature(key *Key, signature Signature) error { | ||
| root := &Root{} | ||
| if err := json.Unmarshal(s.Signed, root); err != nil { | ||
| return fmt.Errorf("unmarshalling root policy: %w", err) | ||
| } | ||
| var err error | ||
| signature.KeyID, err = root.ValidKey(key, "root") | ||
| if err != nil { | ||
| return errors.New("invalid root key") | ||
| } | ||
| signatures := []Signature{} | ||
| for _, sig := range s.Signatures { | ||
| if sig.KeyID != signature.KeyID { | ||
| signatures = append(signatures, sig) | ||
| } | ||
| } | ||
| signatures = append(signatures, signature) | ||
| s.Signatures = signatures | ||
| return nil | ||
| } | ||
|
|
||
| const ( | ||
| KeyTypeFulcio = "sigstore-oidc" | ||
| KeySchemeFulcio = "https://fulcio.sigstore.dev" | ||
| ) | ||
|
|
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| var KeyAlgorithms = []string{"sha256", "sha512"} | ||
|
|
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| type FulcioKeyVal struct { | ||
| Identity string `json:"identity"` | ||
| Issuer string `json:"issuer,omitempty"` | ||
| } | ||
|
|
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| func FulcioVerificationKey(email, issuer string) *Key { | ||
| keyValBytes, _ := json.Marshal(FulcioKeyVal{Identity: email, Issuer: issuer}) | ||
| return &Key{ | ||
| Type: KeyTypeFulcio, | ||
| Scheme: KeySchemeFulcio, | ||
| Algorithms: KeyAlgorithms, | ||
| Value: keyValBytes, | ||
| } | ||
| } | ||
|
|
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| func GetFulcioKeyVal(key *Key) (*FulcioKeyVal, error) { | ||
| fulcioKeyVal := &FulcioKeyVal{} | ||
| err := json.Unmarshal(key.Value, fulcioKeyVal) | ||
| return fulcioKeyVal, err | ||
| } |
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