Use size_t as the type of key_length and digest_length arguments of HMAC.

crypto/hmac_nss.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "crypto/hmac.h"
 
 #include <nss.h>
 #include <pk11pub.h>
 
 #include "base/logging.h"
@@ skipping 21 matching lines @@
       break;
     default:
       NOTREACHED() << "Unsupported hash algorithm";
       break;
   }
 }
 
 HMAC::~HMAC() {
 }
 
-bool HMAC::Init(const unsigned char *key, int key_length) {
+bool HMAC::Init(const unsigned char *key, size_t key_length) {
   EnsureNSSInit();
 
   if (plat_->slot_.get()) {
     // Init must not be called more than twice on the same HMAC object.
     NOTREACHED();
     return false;
   }
 
   plat_->slot_.reset(PK11_GetInternalSlot());
   if (!plat_->slot_.get()) {
@@ skipping 15 matching lines @@
   if (!plat_->sym_key_.get()) {
     NOTREACHED();
     return false;
   }
 
   return true;
 }
 
 bool HMAC::Sign(const base::StringPiece& data,
                 unsigned char* digest,
-                int digest_length) const {
+                size_t digest_length) const {
   if (!plat_->sym_key_.get()) {
     // Init has not been called before Sign.
     NOTREACHED();
     return false;
   }
 
   SECItem param = { siBuffer, NULL, 0 };
   ScopedPK11Context context(PK11_CreateContextBySymKey(plat_->mechanism_,
                                                        CKA_SIGN,
                                                        plat_->sym_key_.get(),
@@ skipping 19 matching lines @@
   if (PK11_DigestFinal(context.get(),
                        digest, &len, digest_length) != SECSuccess) {
     NOTREACHED();
     return false;
   }
 
   return true;
 }
 
 }  // namespace crypto