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/*-
* Copyright 2014 Square Inc.
*
* 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.
*/
package main
import (
"crypto/x509"
"encoding/pem"
"errors"
"fmt"
"gopkg.in/square/go-jose.v2"
)
func LoadJSONWebKey(json []byte, pub bool) (*jose.JSONWebKey, error) {
var jwk jose.JSONWebKey
err := jwk.UnmarshalJSON(json)
if err != nil {
return nil, err
}
if !jwk.Valid() {
return nil, errors.New("invalid JWK key")
}
if jwk.IsPublic() != pub {
return nil, errors.New("priv/pub JWK key mismatch")
}
return &jwk, nil
}
// LoadPublicKey loads a public key from PEM/DER/JWK-encoded data.
func LoadPublicKey(data []byte) (interface{}, error) {
input := data
block, _ := pem.Decode(data)
if block != nil {
input = block.Bytes
}
// Try to load SubjectPublicKeyInfo
pub, err0 := x509.ParsePKIXPublicKey(input)
if err0 == nil {
return pub, nil
}
cert, err1 := x509.ParseCertificate(input)
if err1 == nil {
return cert.PublicKey, nil
}
jwk, err2 := LoadJSONWebKey(data, true)
if err2 == nil {
return jwk, nil
}
return nil, fmt.Errorf("square/go-jose: parse error, got '%s', '%s' and '%s'", err0, err1, err2)
}
// LoadPrivateKey loads a private key from PEM/DER/JWK-encoded data.
func LoadPrivateKey(data []byte) (interface{}, error) {
input := data
block, _ := pem.Decode(data)
if block != nil {
input = block.Bytes
}
var priv interface{}
priv, err0 := x509.ParsePKCS1PrivateKey(input)
if err0 == nil {
return priv, nil
}
priv, err1 := x509.ParsePKCS8PrivateKey(input)
if err1 == nil {
return priv, nil
}
priv, err2 := x509.ParseECPrivateKey(input)
if err2 == nil {
return priv, nil
}
jwk, err3 := LoadJSONWebKey(input, false)
if err3 == nil {
return jwk, nil
}
return nil, fmt.Errorf("square/go-jose: parse error, got '%s', '%s', '%s' and '%s'", err0, err1, err2, err3)
}
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