The Tor Browser: security/manager/ssl/src/nsRandomGenerator.cpp@141e0f1194b1

     1 /* This Source Code Form is subject to the terms of the Mozilla Public

     2  * License, v. 2.0. If a copy of the MPL was not distributed with this

     3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     5 #include "nsRandomGenerator.h"

     6 #include "pk11pub.h"

     7 #include "secerr.h"

     8 #include "prerror.h"

     9 #include "nsNSSComponent.h"

    11 ////////////////////////////////////////////////////////////////////////////////

    12 //// nsRandomGenerator

    14 NS_IMPL_ISUPPORTS(nsRandomGenerator, nsIRandomGenerator)

    16 ////////////////////////////////////////////////////////////////////////////////

    17 //// nsIRandomGenerator

    19 /* void generateRandomBytes(in unsigned long aLength,

    20                             [retval, array, size_is(aLength)] out octet aBuffer) */

    21 NS_IMETHODIMP

    22 nsRandomGenerator::GenerateRandomBytes(uint32_t aLength,

    23                                        uint8_t **aBuffer)

    24 {

    25   NS_ENSURE_ARG_POINTER(aBuffer);

    26   *aBuffer = nullptr;

    28   mozilla::ScopedPK11SlotInfo slot(PK11_GetInternalSlot());

    29   if (!slot) {

    30     return NS_ERROR_FAILURE;

    31   }

    33   uint8_t *buf = reinterpret_cast<uint8_t *>(NS_Alloc(aLength));

    34   if (!buf) {

    35     return NS_ERROR_OUT_OF_MEMORY;

    36   }

    38   SECStatus srv = PK11_GenerateRandomOnSlot(slot, buf, aLength);

    40   if (SECSuccess != srv) {

    41     NS_Free(buf);

    42     return NS_ERROR_FAILURE;

    43   }

    45   *aBuffer = buf;

    47   return NS_OK;

    48 }

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