Aaron Bloomfield (aaron@virginia.edu)
@github | ↑ |
Encryption Review
Key Exchange
Certificates
SSL & TLS
Symmetric ciphers
AES
More symmetric ciphers
Use an OTP: | ![]() ![]() ![]() |
Re-use the same OTP: | ![]() ![]() ![]() |
Extract the images: | ![]() ![]() ![]() |
This example from StackExchange
From Wikipedia; blue are public, red are secret
If that doesn't work, try the direct Youtube link, but start at 2:43
An entity (such as virginia.edu) can hold an intermediate certificate, which allows it to sign for entities in its division (such as news.virginia.edu)
Note that even if the MAC doesn't support encryption (in the first 3 rows), the cipher (likely AES) still does
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RotWord
is a left rotation by 1SubWord
is a lookup[b0,jb1,jb2,jb3,j]=[2311123111233112][a0,ja1,ja2,ja3,j] for 0≤j≤3