diff options
Diffstat (limited to 'vendor/github.com/Philipp15b/go-steam/cryptoutil/rsa.go')
| -rw-r--r-- | vendor/github.com/Philipp15b/go-steam/cryptoutil/rsa.go | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/vendor/github.com/Philipp15b/go-steam/cryptoutil/rsa.go b/vendor/github.com/Philipp15b/go-steam/cryptoutil/rsa.go new file mode 100644 index 00000000..78cd954a --- /dev/null +++ b/vendor/github.com/Philipp15b/go-steam/cryptoutil/rsa.go @@ -0,0 +1,31 @@ +package cryptoutil
+
+import (
+ "crypto/rand"
+ "crypto/rsa"
+ "crypto/sha1"
+ "crypto/x509"
+ "errors"
+)
+
+// Parses a DER encoded RSA public key
+func ParseASN1RSAPublicKey(derBytes []byte) (*rsa.PublicKey, error) {
+ key, err := x509.ParsePKIXPublicKey(derBytes)
+ if err != nil {
+ return nil, err
+ }
+ pubKey, ok := key.(*rsa.PublicKey)
+ if !ok {
+ return nil, errors.New("not an RSA public key")
+ }
+ return pubKey, nil
+}
+
+// Encrypts a message with the given public key using RSA-OAEP and the sha1 hash function.
+func RSAEncrypt(pub *rsa.PublicKey, msg []byte) []byte {
+ b, err := rsa.EncryptOAEP(sha1.New(), rand.Reader, pub, msg, nil)
+ if err != nil {
+ panic(err)
+ }
+ return b
+}
|