Share (P2P)
"Share" uses encryption to hide the identity of who is transferring or what they are transferring. It is non-centralized so it cannot be easily shut down and it supports multiple source "swarm" downloading. All files are transferred encrypted so they must be decrypted upon download completion. In the meantime they are stored in encrypted form in a "Cache" folder. This folder is also used to allow recently downloaded files to be shared among the network based on priorities.
MPEG Common Encryption
MPEG Common Encryption (abbreviated MPEG-CENC) refers to a set of two MPEG standards governing different container formats:The specifications are compatible, so that conversion between the encrypted formats can happen without re-encryption.
They define metadata, specific to each format, about which parts of the stream are encrypted and by which encryption scheme. Each encryption scheme may have different methods to retrieve the decryption key.