EEFB is applied in the image layer and tile layer parsing process; thus, only little effort is required to access the entities subjected to encryption and to insert the dummy data.
Generally speaking, encryption can be implemented at the end of the processing pipeline at bitstream level (causing parsing/decoding effort to identify bitstream parts subjected to encryption) or implemented in a compression-integrated fashion (encryption is performed at some stage of the encoding pipeline).
This implies that if sign bit encryption is restricted to the DC band, only 0.08% of data is subject to the encryption procedure.
As a result, only the LP and HP coefficients are subject to this encryption method, leaving out the DC band since there exists only one DC coefficient per macroblock.
The portion that is subject to the encryption in case of the LP sign bits in the code stream amounts to 1.11%, while the portion of HP sign bits amounts 14.8%.
Product cipher, data encryption scheme in which the ciphertext produced by encrypting a plaintext document is subjected to further encryption.
"Needless to say, the deposited information is subjected to strict encryption," the inventors write in their patent.
But without encryption, those messages are subject to snooping by governments, hackers or Twitter itself.
Rusbridger insisted this had only done so with care, and that documents had been subjected to military-grade encryption in case they were intercepted – but that hadn't happened.
As the highest-ranking appointed executive branch official, Clinton's work account should have been riddled with encryption protection, but it's uncertain whether her personal account was subject to the same measures.
Google is also continuing its ongoing push to standardize email encryption, another feature that's crucial for activists and others who can be subject to hacking and surveillance.
