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Commit 4a3108a4 authored by Robert Shih's avatar Robert Shih
Browse files

HLS: left zero fill 128 bit AES IV 

Bug: 28320768
Change-Id: I9195b87f742f83d3e4c4201642463881303ae3e6
parent 4178befd

media/libstagefright/httplive/PlaylistFetcher.cpp

+5 −1
Original line number Diff line number Diff line
@@ -368,11 +368,15 @@ status_t PlaylistFetcher::decryptBuffer( 
        AString iv;

        if (itemMeta->findString("cipher-iv", &iv)) {

            if ((!iv.startsWith("0x") && !iv.startsWith("0X"))

                    || iv.size() != 16 * 2 + 2) {

                    || iv.size() > 16 * 2 + 2) {

                ALOGE("malformed cipher IV '%s'.", iv.c_str());

                return ERROR_MALFORMED;

            }



            while (iv.size() < 16 * 2 + 2) {

                iv.insert("0", 1, 2);

            }



            memset(mAESInitVec, 0, sizeof(mAESInitVec));

            for (size_t i = 0; i < 16; ++i) {

                char c1 = tolower(iv.c_str()[2 + 2 * i]);