mirror of
https://github.com/openziti/ziti.git
synced 2026-10-26 21:47:05 +00:00
Paul Lorenz
103 lines
2.3 KiB
Go
103 lines
2.3 KiB
Go
/*
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Copyright NetFoundry Inc.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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https://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package oidc_auth
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import (
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"crypto"
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"crypto/ecdsa"
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"crypto/rsa"
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"crypto/x509"
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"github.com/go-jose/go-jose/v4"
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"github.com/golang-jwt/jwt/v5"
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)
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// key implements op.Key and represents a private key
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type key struct {
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id string
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algorithm jose.SignatureAlgorithm
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privateKey crypto.PrivateKey
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publicKey crypto.PublicKey
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}
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func (p *key) Algorithm() jose.SignatureAlgorithm {
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return p.algorithm
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}
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func (p *key) Use() string {
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return "sig"
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}
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func (s *key) SignatureAlgorithm() jose.SignatureAlgorithm {
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return s.algorithm
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}
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// Key returns the private key for the key pair.
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func (s *key) Key() interface{} {
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return s.privateKey
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}
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func (s *key) ID() string {
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return s.id
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}
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// pubKey implements op.Key and represents a public key
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type pubKey struct {
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key
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}
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// Key returns the public key for the key pair.
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func (s *pubKey) Key() interface{} {
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return s.publicKey
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}
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// newKeyFromCert will create a new PubKey from an x509.Certificate
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func newKeyFromCert(cert *x509.Certificate, kid string) *pubKey {
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signingMethod := getSigningMethod(cert)
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if signingMethod == nil {
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return nil
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}
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return &pubKey{
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key{
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id: kid,
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algorithm: jose.SignatureAlgorithm(signingMethod.Alg()),
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publicKey: cert.PublicKey,
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},
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}
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}
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// getSigningMethod determines the jwt.SigningMethod necessary for certificate
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func getSigningMethod(cert *x509.Certificate) jwt.SigningMethod {
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switch pubKey := cert.PublicKey.(type) {
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case *ecdsa.PublicKey:
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switch pubKey.Params().BitSize {
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case jwt.SigningMethodES256.CurveBits:
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return jwt.SigningMethodES256
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case jwt.SigningMethodES384.CurveBits:
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return jwt.SigningMethodES384
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case jwt.SigningMethodES512.CurveBits:
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return jwt.SigningMethodES512
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}
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case *rsa.PublicKey:
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return jwt.SigningMethodRS256
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}
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return nil
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}
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