What would a backdoor in symmetric key cipher look like?
36116
What is the best way to put a backdoor in an encryption system?
32849
How to attack a classical cipher using known partial plaintext?
55190
How to determine which type of transposition cipher I have?
109568
For a given plaintext-ciphertext pair, how many valid AES keys are there?
116917
How does the CBC Padding Oracle Attack work in General?
79726
Inverse public-key encryption
8674
Hash-based asymmetrical encryption (not digital signature) schemes?
123330
Is there any way to decrypt .locky files?
7759
The format of encrypted password in `/etc/shadow`
44628
Knowing pre-encryption data, can we find the private key CryptoWall used?
35531
Block cipher fixed points (plaintext equal to ciphertext)
65027
Knowing pre-encryption data, can we find the private key CryptoLocker used?
80005
Does homomorphic encryption hide the algorithm itself?
123293
Does encrypting twice using the same block cipher produce a security weakness?
133867
Security proofs for CBC mode
10729
DES — Can I recover the key when I have both ciphertext and the plaintext?
40774
Is one time pad cipher reuse and random key secure?