1 files changed, 4 insertions, 1 deletions
diff --git a/base/hmac.h b/base/hmac.h
index bdd23a9..b915124 100644
--- a/base/hmac.h
+++ b/base/hmac.h
@@ -22,7 +22,8 @@ class HMAC {
  public:
   // The set of supported hash functions. Extend as required.
   enum HashAlgorithm {
-    SHA1
+    SHA1,
+    SHA256,
   };
 
   explicit HMAC(HashAlgorithm hash_alg);
@@ -44,6 +45,8 @@ class HMAC {
   // returned in |digest|, which has |digest_length| bytes of storage available.
   bool Sign(const std::string& data, unsigned char* digest, int digest_length);
 
+  // TODO(albertb): Add a Verify method.
+
  private:
   HashAlgorithm hash_alg_;
   scoped_ptr<HMACPlatformData> plat_;