Commit Graph

8 Commits

Author SHA1 Message Date
KongQun Yang c6445b749c Change AesCbcEncryptor/AesCbcDecryptor kNoPadding behavior
Leave unaligned residual block in clear in stead of rejecting it.

Change-Id: Id5452f32f6147e26ac68d9cddb948e8b4f77d107
2016-04-15 13:31:09 -07:00
KongQun Yang 2ac57bf9b9 Use FOURCC as protection scheme parameter
- Remove EncryptionMode enums
- Remove AesEncryptor::InitializeWithRandomIv, replaced with
  a static function AesCryptor::GenerateRandomIv, which should
  be called to generate the iv if the iv is empty.

This change is to prepare support for CBCS and CENS pattern-based
protection schemes.

Issue #77

Change-Id: Icba35089d6e451cbea7ebbf5dd5674079f206390
2016-04-12 16:06:49 -07:00
KongQun Yang 5fc09763ce More cleanups in AesEncryptor and AesDecryptor
- Create AesCryptor class as the common base
- AesCryptor::Crypt function will serve as an Encrypt function for
  encryptor and a Decrypt function for Decryptor.

Change-Id: Ie91fb14964b5091786705bf510656f40d73af160
2016-04-11 23:30:32 +00:00
KongQun Yang a9e5a2ff4f Refactor and optimize cbc encryption/decryption
- Optimize and clean up encryption and decryption code.
- Consolidate various CBC encryption/decryption schemes into a
  common class.
- Make it a constructor argument whether cipher block chain is
  continuous across Encrypt/Decrypt calls.
- Also align protected region size as required in CENC spec.

Issue #77

Change-Id: I533d92ada3cd80933b532b9c3a1cca105ba66f8e
2016-03-30 17:22:13 -07:00
Bei Li e39c3572af Add support for "AES 128-bit Cipher Block Chaining (CBC-128) Encryption"
- Part 1.

- Add packager command line argument "protection_scheme" to specify
  protection scheme. Plumb through packager code to enable CBC
  encryption/decryption.
- Add scheme type "cbc1" to sinf.
- Refactor AES encryptor and decryptor.
- Need more work in the subsample handling.

Issue #77

Change-Id: I3a9304d89adf5efbfb226b6e805a3077b6cb8c68
2016-03-17 16:51:04 -07:00
Jacob Trimble d1d75f477c Add encryption support to WebM.
This does not support key-rotation and will give an error.  This is
because WebM does not have a way to indicate a change in key ID using
media segments.

b/22463551

Change-Id: I9b3dac818dc370302a5afc0d25d8a060b64d30cd
2016-01-15 11:51:41 -08:00
KongQun Yang 15ae26e12f Modify include headers to have "packager" in the path
This is a follow up to previous CL.

Generated using command:
find {media,app,mpd} -type f -exec sed -r -i 's/#include "(.*)"/#include
"packager\/\1"/' {} \;

common.gypi and mpd.gyp are also modified to take the path change into
consideration.

Change-Id: I1fb102b4eb73ae5fde5f4ab303a12cec09b05c33
2014-10-02 12:53:29 -07:00
KongQun Yang b8126bc9da Move source code into packager directory
Make it easier to be included and integrated into other code.

Change-Id: I609881688cc20f8fac676cbd91fde4753af32ee5
2014-10-02 12:32:14 -07:00