Index: crypto/hmac_mac.cc |
diff --git a/crypto/hmac_mac.cc b/crypto/hmac_mac.cc |
index d7cec61da19e8bd107fd037080b12d97c5013d7e..fefd6e7503fc1a920ce290e1235c81dffb806ef7 100644 |
--- a/crypto/hmac_mac.cc |
+++ b/crypto/hmac_mac.cc |
@@ -41,7 +41,7 @@ HMAC::~HMAC() { |
bool HMAC::Sign(const std::string& data, |
unsigned char* digest, |
- int digest_length) { |
+ int digest_length) const { |
CCHmacAlgorithm algorithm; |
int algorithm_digest_length; |
switch (hash_alg_) { |