1 files changed, 22 insertions, 0 deletions
diff --git a/vendor/github.com/goamz/goamz/exp/mturk/sign.go b/vendor/github.com/goamz/goamz/exp/mturk/sign.go
new file mode 100644
index 000000000..f2ff8cbfe
--- /dev/null
+++ b/vendor/github.com/goamz/goamz/exp/mturk/sign.go
@@ -0,0 +1,22 @@
+package mturk
+
+import (
+	"crypto/hmac"
+	"crypto/sha1"
+	"encoding/base64"
+	"github.com/goamz/goamz/aws"
+)
+
+var b64 = base64.StdEncoding
+
+// ----------------------------------------------------------------------------
+// Mechanical Turk signing (http://goo.gl/wrzfn)
+func sign(auth aws.Auth, service, method, timestamp string, params map[string]string) {
+	payload := service + method + timestamp
+	hash := hmac.New(sha1.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)
+}