# Tag Info

5

Letter frequency checks how often a letter appears in your text. Depending on your text, the frequency of letters will change. If your text is short and has the name "Alex" in it a lot, it will make the frequency of the letter X much higher than average. Generally when discussing the expected letter frequency, people refer to the average letter frequency ...

3

"In terms of the frequency of letters, how is it possible to have different frequent letters when the length of the text I'm analyzing is shorter?" Well, if you analize the famous "The quick brown fox jumps over the lazy dog" you can't expect a frequency analysis to perfect match with big texts analysis. It would be like making a Voting Intent ...

2

In such terms, I suppose you should to find GCD of two numbers Key1 and Key2. It seems that with big probability it will give to you one of the prime number which was generated by compromised generator. Pollard`s method is very hard, and I doubt, that you can successfully apply it in the case.

2

It depends on how long you want to keep your data safe for. Do you want the secret safe for 1 week, the rest of your life or forever? Will you get in trouble, put in prison or be killed if that secret is revealed to the wrong person? It also depends on who you want to keep the data safe from. Do you want your data protected from nation state level ...

2

Whenever you're trying to attack a scheme that is [algebraically] relatively simple like this one, a sensible first step is to write out everything you know. Now, considering the information you've been given, try and substitute things into oneanother, and see where this leads you. Let $(m,c)$ be the first 1024 bits of the plaintext-ciphertext pair. Now, ...

1

Tweak per message offers good security like IV per message . Basically a tweakable block cipher with same tweak for all messages is same as non-tweakable block cipher. It is deterministic in nature and not considered secure enough in itself. You need to apply a mode of encryption that has been designed for non-tweakable block ciphers to make it secure.

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This obviously is not an encryption but a simple coding with Base64 coding: The decoded text message is: Steganography is the art and science of writing hidden messages in such a way that no one, apart from the sender and intended recipient, suspects the existence of the message, a form of security through obscurity. The word steganography is of ...

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