Add vendor (steam)

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

+}