File ffmpeg-support-kid-key.patch of Package ffmpeg-7
455
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--- a/doc/demuxers.texi
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+++ b/doc/demuxers.texi
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@table @option
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@item cenc_decryption_key
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-16-byte key, in hex, to decrypt files encrypted using ISO Common Encryption (CENC/AES-128 CTR; ISO/IEC 23001-7).
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+Default 16-byte key, in hex, to decrypt files encrypted using ISO Common Encryption (CENC/AES-128 CTR; ISO/IEC 23001-7).
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+
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+ at item cenc_decryption_keys
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+Dictionary of 16-byte key ID => 16-byte key, both in hex, to decrypt files encrypted using ISO Common Encryption
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+(CENC/AES-128 CTR; ISO/IEC 23001-7).
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@end table
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specify.
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@item decryption_key
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-16-byte key, in hex, to decrypt files encrypted using ISO Common Encryption (CENC/AES-128 CTR; ISO/IEC 23001-7).
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+Default 16-byte key, in hex, to decrypt files encrypted using ISO Common Encryption (CENC/AES-128 CTR; ISO/IEC 23001-7).
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+
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+ at item decryption_keys
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+Dictionary of 16-byte key ID => 16-byte key, both in hex, to decrypt files encrypted using ISO Common Encryption
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+(CENC/AES-128 CTR; ISO/IEC 23001-7).
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@item max_stts_delta
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Very high sample deltas written in a trak's stts box may occasionally be intended but usually they are written in
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--- a/libavformat/dashdec.c
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+++ b/libavformat/dashdec.c
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AVDictionary *avio_opts;
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int max_url_size;
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char *cenc_decryption_key;
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+ char *cenc_decryption_keys;
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/* Flags for init section*/
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int is_init_section_common_video;
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if (c->cenc_decryption_key)
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av_dict_set(&in_fmt_opts, "decryption_key", c->cenc_decryption_key, 0);
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+ if (c->cenc_decryption_keys)
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+ av_dict_set(&in_fmt_opts, "decryption_keys", c->cenc_decryption_keys, 0);
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// provide additional information from mpd if available
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ret = avformat_open_input(&pls->ctx, "", in_fmt, &in_fmt_opts); //pls->init_section->url
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OFFSET(allowed_extensions), AV_OPT_TYPE_STRING,
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{.str = "aac,m4a,m4s,m4v,mov,mp4,webm,ts"},
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INT_MIN, INT_MAX, FLAGS},
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- { "cenc_decryption_key", "Media decryption key (hex)", OFFSET(cenc_decryption_key), AV_OPT_TYPE_STRING, {.str = NULL}, INT_MIN, INT_MAX, .flags = FLAGS },
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+ { "cenc_decryption_key", "Media default decryption key (hex)", OFFSET(cenc_decryption_key), AV_OPT_TYPE_STRING, {.str = NULL}, INT_MIN, INT_MAX, .flags = FLAGS },
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+ { "cenc_decryption_keys", "Media decryption keys by KID (hex)", OFFSET(cenc_decryption_keys), AV_OPT_TYPE_STRING, {.str = NULL}, INT_MIN, INT_MAX, .flags = FLAGS },
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{NULL}
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};
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--- a/libavformat/isom.h
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+++ b/libavformat/isom.h
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void *audible_iv;
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int audible_iv_size;
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struct AVAES *aes_decrypt;
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- uint8_t *decryption_key;
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- int decryption_key_len;
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+ uint8_t *decryption_default_key;
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+ int decryption_default_key_len;
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int enable_drefs;
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int32_t movie_display_matrix[3][3]; ///< display matrix from mvhd
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int have_read_mfra_size;
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int thmb_item_id;
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int64_t idat_offset;
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int interleaved_read;
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+ AVDictionary* decryption_keys;
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} MOVContext;
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int ff_mp4_read_descr_len(AVIOContext *pb);
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--- a/libavformat/mov.c
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+++ b/libavformat/mov.c
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return 0;
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}
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+static int get_key_from_kid(uint8_t* out, int len, MOVContext *c, AVEncryptionInfo *sample) {
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+ AVDictionaryEntry *key_entry_hex;
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+ char kid_hex[16*2+1];
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+
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+ if (c->decryption_default_key && c->decryption_default_key_len != len) {
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+ av_log(c->fc, AV_LOG_ERROR, "invalid default decryption key length: got %d, expected %d\n", c->decryption_default_key_len, len);
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+ return -1;
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+ }
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+
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+ if (!c->decryption_keys) {
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+ av_assert0(c->decryption_default_key);
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+ memcpy(out, c->decryption_default_key, len);
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+ return 0;
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+ }
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+
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+ if (sample->key_id_size != 16) {
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+ av_log(c->fc, AV_LOG_ERROR, "invalid key ID size: got %u, expected 16\n", sample->key_id_size);
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+ return -1;
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+ }
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+
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+ ff_data_to_hex(kid_hex, sample->key_id, 16, 1);
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+ key_entry_hex = av_dict_get(c->decryption_keys, kid_hex, NULL, AV_DICT_DONT_STRDUP_KEY|AV_DICT_DONT_STRDUP_VAL);
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+ if (!key_entry_hex) {
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+ if (!c->decryption_default_key) {
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+ av_log(c->fc, AV_LOG_ERROR, "unable to find KID %s\n", kid_hex);
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+ return -1;
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+ }
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+ memcpy(out, c->decryption_default_key, len);
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+ return 0;
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+ }
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+ if (strlen(key_entry_hex->value) != len*2) {
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+ return -1;
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+ }
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+ ff_hex_to_data(out, key_entry_hex->value);
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+ return 0;
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+}
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+
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static int cenc_scheme_decrypt(MOVContext *c, MOVStreamContext *sc, AVEncryptionInfo *sample, uint8_t *input, int size)
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{
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int i, ret;
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int bytes_of_protected_data;
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+ uint8_t decryption_key[AES_CTR_KEY_SIZE];
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if (!sc->cenc.aes_ctr) {
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+ ret = get_key_from_kid(decryption_key, sizeof(decryption_key), c, sample);
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+ if (ret < 0) {
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+ return ret;
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+ }
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+
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/* initialize the cipher */
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sc->cenc.aes_ctr = av_aes_ctr_alloc();
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if (!sc->cenc.aes_ctr) {
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return AVERROR(ENOMEM);
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}
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- ret = av_aes_ctr_init(sc->cenc.aes_ctr, c->decryption_key);
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+ ret = av_aes_ctr_init(sc->cenc.aes_ctr, decryption_key);
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if (ret < 0) {
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return ret;
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}
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int i, ret;
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int num_of_encrypted_blocks;
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uint8_t iv[16];
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+ uint8_t decryption_key[16];
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if (!sc->cenc.aes_ctx) {
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+ ret = get_key_from_kid(decryption_key, sizeof(decryption_key), c, sample);
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+ if (ret < 0) {
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+ return ret;
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+ }
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+
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/* initialize the cipher */
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sc->cenc.aes_ctx = av_aes_alloc();
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if (!sc->cenc.aes_ctx) {
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return AVERROR(ENOMEM);
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}
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- ret = av_aes_init(sc->cenc.aes_ctx, c->decryption_key, 16 * 8, 1);
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+ ret = av_aes_init(sc->cenc.aes_ctx, decryption_key, 16 * 8, 1);
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if (ret < 0) {
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return ret;
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}
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{
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int i, ret, rem_bytes;
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uint8_t *data;
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+ uint8_t decryption_key[AES_CTR_KEY_SIZE];
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if (!sc->cenc.aes_ctr) {
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+ ret = get_key_from_kid(decryption_key, sizeof(decryption_key), c, sample);
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+ if (ret < 0) {
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+ return ret;
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+ }
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+
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/* initialize the cipher */
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sc->cenc.aes_ctr = av_aes_ctr_alloc();
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if (!sc->cenc.aes_ctr) {
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return AVERROR(ENOMEM);
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}
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- ret = av_aes_ctr_init(sc->cenc.aes_ctr, c->decryption_key);
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+ ret = av_aes_ctr_init(sc->cenc.aes_ctr, decryption_key);
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if (ret < 0) {
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return ret;
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}
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int i, ret, rem_bytes;
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uint8_t iv[16];
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uint8_t *data;
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+ uint8_t decryption_key[16];
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if (!sc->cenc.aes_ctx) {
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+ ret = get_key_from_kid(decryption_key, sizeof(decryption_key), c, sample);
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+ if (ret < 0) {
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+ return ret;
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+ }
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+
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/* initialize the cipher */
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sc->cenc.aes_ctx = av_aes_alloc();
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if (!sc->cenc.aes_ctx) {
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return AVERROR(ENOMEM);
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}
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- ret = av_aes_init(sc->cenc.aes_ctx, c->decryption_key, 16 * 8, 1);
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+ ret = av_aes_init(sc->cenc.aes_ctx, decryption_key, 16 * 8, 1);
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if (ret < 0) {
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return ret;
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}
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return AVERROR_INVALIDDATA;
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}
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- if (mov->decryption_key) {
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+ if (mov->decryption_keys || mov->decryption_default_key) {
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return cenc_decrypt(mov, sc, encrypted_sample, pkt->data, pkt->size);
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} else {
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size_t size;
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MOVAtom atom = { AV_RL32("root") };
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int i;
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- if (mov->decryption_key_len != 0 && mov->decryption_key_len != AES_CTR_KEY_SIZE) {
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- av_log(s, AV_LOG_ERROR, "Invalid decryption key len %d expected %d\n",
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- mov->decryption_key_len, AES_CTR_KEY_SIZE);
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- return AVERROR(EINVAL);
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- }
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-
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mov->fc = s;
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mov->trak_index = -1;
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mov->thmb_item_id = -1;
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"Fixed key used for handling Audible AAX files", OFFSET(audible_fixed_key),
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AV_OPT_TYPE_BINARY, {.str="77214d4b196a87cd520045fd20a51d67"},
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.flags = AV_OPT_FLAG_DECODING_PARAM },
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- { "decryption_key", "The media decryption key (hex)", OFFSET(decryption_key), AV_OPT_TYPE_BINARY, .flags = AV_OPT_FLAG_DECODING_PARAM },
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+ { "decryption_key", "The default media decryption key (hex)", OFFSET(decryption_default_key), AV_OPT_TYPE_BINARY, .flags = AV_OPT_FLAG_DECODING_PARAM },
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+ { "decryption_keys", "The media decryption keys by KID (hex)", OFFSET(decryption_keys), AV_OPT_TYPE_DICT, .flags = AV_OPT_FLAG_DECODING_PARAM },
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{ "enable_drefs", "Enable external track support.", OFFSET(enable_drefs), AV_OPT_TYPE_BOOL,
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{.i64 = 0}, 0, 1, FLAGS },
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{ "max_stts_delta", "treat offsets above this value as invalid", OFFSET(max_stts_delta), AV_OPT_TYPE_INT, {.i64 = UINT_MAX-48000*10 }, 0, UINT_MAX, .flags = AV_OPT_FLAG_DECODING_PARAM },
246
--- a/tests/fate/mov.mak
247
+++ b/tests/fate/mov.mak
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fate-mov-3elist-encrypted \
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fate-mov-frag-encrypted \
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fate-mov-tenc-only-encrypted \
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+ fate-mov-3elist-encrypted-kid \
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+ fate-mov-frag-encrypted-kid \
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+ fate-mov-tenc-only-encrypted-kid \
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fate-mov-invalid-elst-entry-count \
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fate-mov-gpmf-remux \
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fate-mov-ibi-elst-starts-b \
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# Full-sample encryption and constant IV using only tenc atom (no senc/saio/saiz).
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fate-mov-tenc-only-encrypted: CMD = framemd5 -decryption_key 12345678901234567890123456789012 -i $(TARGET_SAMPLES)/mov/mov-tenc-only-encrypted.mp4
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+# Edit list with encryption, using the decryption_keys option.
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+fate-mov-3elist-encrypted-kid: CMD = framemd5 -decryption_keys 12345678901234567890123456789012=12345678901234567890123456789012 -i $(TARGET_SAMPLES)/mov/mov-3elist-encrypted.mov
264
+
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+# Fragmented encryption with senc boxes in movie fragments, using the decryption_keys option.
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+fate-mov-frag-encrypted-kid: CMD = framemd5 -decryption_keys abba271e8bcf552bbd2e86a434a9a5d9=12345678901234567890123456789012 -i $(TARGET_SAMPLES)/mov/mov-frag-encrypted.mp4
267
+
268
+# Full-sample encryption and constant IV using only tenc atom (no senc/saio/saiz), using the decryption_keys option.
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+fate-mov-tenc-only-encrypted-kid: CMD = framemd5 -decryption_keys abba271e8bcf552bbd2e86a434a9a5d9=12345678901234567890123456789012 -i $(TARGET_SAMPLES)/mov/mov-tenc-only-encrypted.mp4
270
+
271
# Makes sure that the CTTS is also modified when we fix avindex in mov.c while parsing edit lists.
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fate-mov-elist-starts-ctts-2ndsample: CMD = framemd5 -i $(TARGET_SAMPLES)/mov/mov-elist-starts-ctts-2ndsample.mov
273
274
--- /dev/null
275
+++ b/tests/ref/fate/mov-3elist-encrypted-kid
276
277
+#format: frame checksums
278
+#version: 2
279
+#hash: MD5
280
+#tb 0: 1/24
281
+#media_type 0: video
282
+#codec_id 0: rawvideo
283
+#dimensions 0: 640x480
284
+#sar 0: 0/1
285
+#stream#, dts, pts, duration, size, hash
286
+0, 0, 0, 1, 460800, 80fbbdec589e15e6c493b44d243f92a9
287
+0, 1, 1, 1, 460800, f4b23293bb2ecf69cc3570853d8c56a1
288
+0, 2, 2, 1, 460800, 0c03ce2c1c6ec405d7455465ecd559a3
289
+0, 3, 3, 1, 460800, 7921791695537fba2c3c123da4834cb9
290
+0, 4, 4, 1, 460800, 30c8e2903a561b84d4cbaf95c668d236
291
+0, 5, 5, 1, 460800, 7ff42e998217c17592ddf6b584f26cef
292
+0, 6, 6, 1, 460800, 5e402c48bf097db2d31b82bb4194a382
293
+0, 7, 7, 1, 460800, 824c49e92c8ae6d99a0207b514dd756c
294
+0, 8, 8, 1, 460800, 24f189216a1d9cf2313b2d6dbe3dbdd3
295
+0, 9, 9, 1, 460800, 519179a8e74275d26b183374637e003f
296
+0, 10, 10, 1, 460800, f18331ddcef0adf5b069bfa98baf8db4
297
+0, 11, 11, 1, 460800, 081f61688690d47dbdddd5384e5d5a70
298
+0, 12, 12, 1, 460800, 90dbf019b9035433371a8df41a9268b7
299
+0, 13, 13, 1, 460800, bb5adfb9c66732898b34186eca1667ba
300
+0, 14, 14, 1, 460800, cc08cfd64f37783ecddaf143f6ad78bc
301
+0, 15, 15, 1, 460800, b8ae21d024fe4df903d56f4521993c72
302
+0, 16, 16, 1, 460800, b45a99907f045dcadf0a2befc11555e3
303
+0, 17, 17, 1, 460800, 603ba935845e65ab6cccbbec88bbf60d
304
+0, 18, 18, 1, 460800, df80c8d3e6a77258a306903f17995a18
305
+0, 19, 19, 1, 460800, 4b7e90c0a5fd0e0cd958d47f0afac636
306
+0, 20, 20, 1, 460800, 9feb6e36182f1745be6387edea240eb6
307
+0, 21, 21, 1, 460800, 86e6de4bd0a5ff7558f4cf6c1ec3930d
308
+0, 22, 22, 1, 460800, 726b69df77edbe7b503d4698656d1320
309
+0, 23, 23, 1, 460800, d282fb7a953ac205b0a43d00c2d60a33
310
+0, 24, 24, 1, 460800, eece3daa70cc20208dd75d91ac84c8fd
311
+0, 25, 25, 1, 460800, c86d23e73bcce351fc315fb1f13348da
312
+0, 26, 26, 1, 460800, 93497b4f7c5ad9d61212239b7c9d2770
313
+0, 27, 27, 1, 460800, eb217d2c12de67903835a8c58f620488
314
+0, 28, 28, 1, 460800, d966480867bb54c8cd044f18388ed486
315
+0, 29, 29, 1, 460800, 3ea6207942b3181fdd8e8aa6cae1062a
316
+0, 30, 30, 1, 460800, 2620df54aca086ec0fb9527c6e6f5135
317
+0, 31, 31, 1, 460800, 43bb7320f0bb583188dc965ddbfade90
318
+0, 32, 32, 1, 460800, 0cddaa04645f804e02f65b0836412113
319
+0, 33, 33, 1, 460800, 83b2dc95807289d7f4a4632bf18c2e97
320
+0, 34, 34, 1, 460800, 98134d0e41e6dd12827049ccf33b4669
321
+0, 35, 35, 1, 460800, 56f55631731fa39c7acbab0afeb2eb1b
322
+0, 36, 36, 1, 460800, 379c1105be09d836a515dc909455ddf4
323
+0, 37, 37, 1, 460800, 1df87c47e9d98731faf1c3885b77e5da
324
+0, 38, 38, 1, 460800, 9a8734bcbfdb4d97e530683b8b556a26
325
+0, 39, 39, 1, 460800, c7a7990d0cddc5adfbe27da7a42e025e
326
+0, 40, 40, 1, 460800, 0c81e46011e03be410feaf056207fd55
327
+0, 41, 41, 1, 460800, ca76e4e63016ff29d8aeeb9cb053bb6c
328
+0, 42, 42, 1, 460800, cebfbe299c17c1f8fc1e6b189555c3c2
329
+0, 43, 43, 1, 460800, 4f002c5feca5e75f07089e0df47507dd
330
+0, 44, 44, 1, 460800, c5fd83fc4a745abee9b3d9a6eec9dd3e
331
+0, 45, 45, 1, 460800, 57d9bad9b45aa2746de5d8bdc2c24969
332
+0, 46, 46, 1, 460800, 9831673ad7dec167af4a959f64258949
333
+0, 47, 47, 1, 460800, 77a1cb208f70f51bcb01e28d8cba73b4
334
--- /dev/null
335
+++ b/tests/ref/fate/mov-frag-encrypted-kid
336
337
+#format: frame checksums
338
+#version: 2
339
+#hash: MD5
340
+#tb 0: 1/24
341
+#media_type 0: video
342
+#codec_id 0: rawvideo
343
+#dimensions 0: 120x52
344
+#sar 0: 544/545
345
+#stream#, dts, pts, duration, size, hash
346
+0, 0, 0, 1, 9360, 920bdc277a6a31c1daed9aca44b10caf
347
+0, 1, 1, 1, 9360, f1c0b61fef593de57cb97be7fa846569
348
+0, 2, 2, 1, 9360, 6ef32d9d4398355aebf6d3fb11d51d3f
349
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350
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351
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352
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353
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354
+0, 8, 8, 1, 9360, f0d69255e3a27a8b4ae8a4b7b210929d
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+0, 11, 11, 1, 9360, ff37bb8cd6bd0412a3b3cb45db54afc9
358
+0, 12, 12, 1, 9360, dfb9085441575732844b6c2f05d5f542
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+0, 13, 13, 1, 9360, 0017100feaaa9fc7eacd2447d50d7542
360
+0, 14, 14, 1, 9360, 4e2f1b8c4e04c59934c2f58541e62613
361
+0, 15, 15, 1, 9360, 27a44dfea7cd2d30e488194c34ab473c
362
+0, 16, 16, 1, 9360, fc7b56bd95e990a33cf575d1ef820902
363
+0, 17, 17, 1, 9360, fa2d1609e69714dffc410e65f3c8b755
364
+0, 18, 18, 1, 9360, 705d7429f447cb13febe202d567795f2
365
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366
+0, 20, 20, 1, 9360, 2f0354b40d211d0a4ade4568bea4f85e
367
+0, 21, 21, 1, 9360, e96af3b6c0cc931463ca77d6be0f1148
368
+0, 22, 22, 1, 9360, 04a904d798361959971361401879c7e4
369
+0, 23, 23, 1, 9360, 2f119642340df6d25362b5590ded46b7
370
+0, 24, 24, 1, 9360, 5993fca2e60050706f857ac76e48f386
371
+0, 25, 25, 1, 9360, 2ff3b5775fed3d527bfbbeea786787fe
372
+0, 26, 26, 1, 9360, 42024dbe23d3fb5b0d8987ae1ce390a8
373
+0, 27, 27, 1, 9360, d804204f0bd9db5f6a758e2c934d9e38
374
+0, 28, 28, 1, 9360, e322712e6e34c58ec1a2ab5e2c1e3bfe
375
+0, 29, 29, 1, 9360, 3975bd1a5f6a6b6260276777f9de611e
376
+0, 30, 30, 1, 9360, 4388f0412efc6310706a7cdedc859ea9
377
+0, 31, 31, 1, 9360, b4b9a11b0b86635267345a569640e8d4
378
+0, 32, 32, 1, 9360, 31879c7b8d6b67a4209ffde786bb8cb4
379
+0, 33, 33, 1, 9360, 4b6dc02d7c889fe4abd4e013b25f585a
380
+0, 34, 34, 1, 9360, dc73aae82bd39a1220d1106c8d3e8252
381
+0, 35, 35, 1, 9360, 54c7dfbd49f312806f6c1a89f7c2c36f
382
+0, 36, 36, 1, 9360, 150abc64f8994d444a521ea90570443c
383
+0, 37, 37, 1, 9360, d277cdc7dcadbe0016f2e950459e7ebf
384
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385
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386
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387
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388
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389
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390
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391
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392
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393
+0, 47, 47, 1, 9360, 3e2b7e7262fdca08d9d1ef6070125c4b
394
--- /dev/null
395
+++ b/tests/ref/fate/mov-tenc-only-encrypted-kid
396
397
+#format: frame checksums
398
+#version: 2
399
+#hash: MD5
400
+#tb 0: 1/24
401
+#media_type 0: video
402
+#codec_id 0: rawvideo
403
+#dimensions 0: 1024x436
404
+#sar 0: 1/1
405
+#stream#, dts, pts, duration, size, hash
406
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407
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454
--
455