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helper_keys.go
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/
helper_keys.go
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/*
* Copyright © 2015-2018 Aeneas Rekkas <aeneas+oss@aeneas.io>
*
* 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.
*
* @author Aeneas Rekkas <aeneas+oss@aeneas.io>
* @copyright 2015-2018 Aeneas Rekkas <aeneas+oss@aeneas.io>
* @license Apache-2.0
*/
package server
import (
"crypto/ecdsa"
"crypto/rsa"
"github.com/ory/hydra/config"
"github.com/ory/hydra/jwk"
"github.com/ory/hydra/pkg"
"github.com/pkg/errors"
"github.com/square/go-jose"
)
func createOrGetJWK(c *config.Config, set string, prefix string) (key *jose.JSONWebKey, err error) {
ctx := c.Context()
keys, err := ctx.KeyManager.GetKeySet(set)
if errors.Cause(err) == pkg.ErrNotFound || keys != nil && len(keys.Keys) == 0 {
c.GetLogger().Infof("JSON Web Key Set %s does not exist yet, generating new key pair...", set)
keys, err = createJWKS(ctx, set)
if err != nil {
return nil, err
}
} else if err != nil {
return nil, err
}
key, err = jwk.FindKeyByPrefix(keys, prefix)
if err != nil {
c.GetLogger().Infof("JSON Web Key with prefix %s not found in JSON Web Key Set %s, generating new key pair...", prefix, set)
keys, err = createJWKS(ctx, set)
if err != nil {
return nil, err
}
key, err = jwk.FindKeyByPrefix(keys, prefix)
if err != nil {
return nil, err
}
}
return key, nil
}
func createJWKS(ctx *config.Context, set string) (*jose.JSONWebKeySet, error) {
generator := jwk.RS256Generator{}
keys, err := generator.Generate("")
if err != nil {
return nil, errors.Wrapf(err, "Could not generate %s key", set)
}
for i, k := range keys.Keys {
k.Use = "sig"
keys.Keys[i] = k
}
err = ctx.KeyManager.AddKeySet(set, keys)
if err != nil {
return nil, errors.Wrapf(err, "Could not persist %s key", set)
}
return keys, nil
}
func publicKey(key interface{}) interface{} {
switch k := key.(type) {
case *rsa.PrivateKey:
return &k.PublicKey
case *ecdsa.PrivateKey:
return &k.PublicKey
default:
return nil
}
}