Implement VerifySignedData() for ECDSA, RSA PKCS#1 and RSA PSS.

net/der/input.h

Index: net/der/input.h
diff --git a/net/der/input.h b/net/der/input.h
index f8eb467a482dc765788c720da9e4ec6b9102522d..6731b0c0600afd22f623141252b7e2b58d413061 100644
--- a/net/der/input.h
+++ b/net/der/input.h
@@ -49,6 +49,9 @@ class NET_EXPORT_PRIVATE Input {
   // Creates an Input from the given |data| and |len|.
   Input(const uint8_t* data, size_t len);
 
+  // Creates an Input from the given string |s|.
+  explicit Input(const std::string& s);

[Ryan Sleevi, 2015/07/07 14:07:31]

Intentionally removed this API. I'm not keen to reintroduce it.

[eroman, 2015/07/07 18:07:00]

Done.
Didn't realize it had been added and removed already.

I moved it to a test helper function, and also changed the input type to a
non-const reference so it cannot inadvertently be used as in the original bug
(with a temporary std::string value).

+
   // Returns the length in bytes of an Input's data.
   size_t Length() const { return len_; }