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Results tagged with symmetric
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user 36767
Symmetric cryptosystems assume two communicating entities share a pre-established secret key.
11
votes
Accepted
What are the performance reasons behind "xor-a-rotated-sum" instead of "add-a-rotated-xor" i...
Three-operand means two source registers and one destination register. Most x86 instructions reuse one of the source registers as the destination, so you must use an extra MOV instruction to copy one …
- 841
4
votes
Why is possible to encrypt multiple messages within the same stream in AES
You may instead be interested in Fernet (symmetric encryption).
If you use Fernet then you won't be able to decrypt the message in two pieces like this. …
- 841
4
votes
For Symmetric Cryptography, why is it considered more important to safeguard a key than the ...
Brute force means trying possibilities until one works. If you use a single algorithm with a 128-bit key, there are $2^{128}$ possibilities for the attacker to test. If you choose between 16 different …
- 841