1 files changed, 38 insertions, 0 deletions
diff --git a/vendor/github.com/goamz/goamz/iam/sign.go b/vendor/github.com/goamz/goamz/iam/sign.go
new file mode 100644
index 000000000..b704fd8d6
--- /dev/null
+++ b/vendor/github.com/goamz/goamz/iam/sign.go
@@ -0,0 +1,38 @@
+package iam
+
+import (
+	"crypto/hmac"
+	"crypto/sha256"
+	"encoding/base64"
+	"github.com/goamz/goamz/aws"
+	"sort"
+	"strings"
+)
+
+// ----------------------------------------------------------------------------
+// Version 2 signing (http://goo.gl/RSRp5)
+
+var b64 = base64.StdEncoding
+
+func sign(auth aws.Auth, method, path string, params map[string]string, host string) {
+	params["AWSAccessKeyId"] = auth.AccessKey
+	params["SignatureVersion"] = "2"
+	params["SignatureMethod"] = "HmacSHA256"
+	if auth.Token() != "" {
+		params["SecurityToken"] = auth.Token()
+	}
+
+	var sarray []string
+	for k, v := range params {
+		sarray = append(sarray, aws.Encode(k)+"="+aws.Encode(v))
+	}
+	sort.StringSlice(sarray).Sort()
+	joined := strings.Join(sarray, "&")
+	payload := method + "\n" + host + "\n" + path + "\n" + joined
+	hash := hmac.New(sha256.New, []byte(auth.SecretKey))
+	hash.Write([]byte(payload))
+	signature := make([]byte, b64.EncodedLen(hash.Size()))
+	b64.Encode(signature, hash.Sum(nil))
+
+	params["Signature"] = string(signature)
+}