mirror of
https://codeberg.org/forgejo/forgejo.git
synced 2024-08-26 22:47:51 +02:00
68 lines
1.4 KiB
Go
68 lines
1.4 KiB
Go
|
package jwt
|
||
|
|
||
|
import (
|
||
|
"crypto/ecdsa"
|
||
|
"crypto/x509"
|
||
|
"encoding/pem"
|
||
|
"errors"
|
||
|
)
|
||
|
|
||
|
var (
|
||
|
ErrNotECPublicKey = errors.New("Key is not a valid ECDSA public key")
|
||
|
ErrNotECPrivateKey = errors.New("Key is not a valid ECDSA private key")
|
||
|
)
|
||
|
|
||
|
// Parse PEM encoded Elliptic Curve Private Key Structure
|
||
|
func ParseECPrivateKeyFromPEM(key []byte) (*ecdsa.PrivateKey, error) {
|
||
|
var err error
|
||
|
|
||
|
// Parse PEM block
|
||
|
var block *pem.Block
|
||
|
if block, _ = pem.Decode(key); block == nil {
|
||
|
return nil, ErrKeyMustBePEMEncoded
|
||
|
}
|
||
|
|
||
|
// Parse the key
|
||
|
var parsedKey interface{}
|
||
|
if parsedKey, err = x509.ParseECPrivateKey(block.Bytes); err != nil {
|
||
|
return nil, err
|
||
|
}
|
||
|
|
||
|
var pkey *ecdsa.PrivateKey
|
||
|
var ok bool
|
||
|
if pkey, ok = parsedKey.(*ecdsa.PrivateKey); !ok {
|
||
|
return nil, ErrNotECPrivateKey
|
||
|
}
|
||
|
|
||
|
return pkey, nil
|
||
|
}
|
||
|
|
||
|
// Parse PEM encoded PKCS1 or PKCS8 public key
|
||
|
func ParseECPublicKeyFromPEM(key []byte) (*ecdsa.PublicKey, error) {
|
||
|
var err error
|
||
|
|
||
|
// Parse PEM block
|
||
|
var block *pem.Block
|
||
|
if block, _ = pem.Decode(key); block == nil {
|
||
|
return nil, ErrKeyMustBePEMEncoded
|
||
|
}
|
||
|
|
||
|
// Parse the key
|
||
|
var parsedKey interface{}
|
||
|
if parsedKey, err = x509.ParsePKIXPublicKey(block.Bytes); err != nil {
|
||
|
if cert, err := x509.ParseCertificate(block.Bytes); err == nil {
|
||
|
parsedKey = cert.PublicKey
|
||
|
} else {
|
||
|
return nil, err
|
||
|
}
|
||
|
}
|
||
|
|
||
|
var pkey *ecdsa.PublicKey
|
||
|
var ok bool
|
||
|
if pkey, ok = parsedKey.(*ecdsa.PublicKey); !ok {
|
||
|
return nil, ErrNotECPublicKey
|
||
|
}
|
||
|
|
||
|
return pkey, nil
|
||
|
}
|