Type conversion fixes, crypto/ edition.

crypto/ec_private_key_nss.cc

 // Copyright (c) 2012 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/ec_private_key.h"
 
 extern "C" {
 // Work around NSS missing SEC_BEGIN_PROTOS in secmodt.h.  This must come before
 // other NSS headers.
 #include <secmodt.h>
@@ skipping 322 matching lines @@
   // In addition to the oid data, the encoding requires one byte for the ASN.1
   // tag and one byte for the length (assuming the length is <= 127).
   DCHECK_LE(oid_data->oid.len, 127U);
   std::vector<unsigned char> parameters_buf(2 + oid_data->oid.len);
   SECKEYECParams ec_parameters = {
     siDEROID, &parameters_buf[0],
     static_cast<unsigned>(parameters_buf.size())
   };
 
   ec_parameters.data[0] = SEC_ASN1_OBJECT_ID;
-  ec_parameters.data[1] = oid_data->oid.len;
+  ec_parameters.data[1] = static_cast<unsigned char>(oid_data->oid.len);
   memcpy(ec_parameters.data + 2, oid_data->oid.data, oid_data->oid.len);
 
   result->key_ = PK11_GenerateKeyPair(slot,
                                       CKM_EC_KEY_PAIR_GEN,
                                       &ec_parameters,
                                       &result->public_key_,
                                       permanent,
                                       sensitive,
                                       NULL);
   if (!result->key_) {
@@ skipping 42 matching lines @@
 
   if (success) {
     CHECK_EQ(ecKey, SECKEY_GetPublicKeyType(result->public_key_));
     return result.release();
   }
 
   return NULL;
 }
 
 }  // namespace crypto