# Questions tagged [probability]

Questions about the branch of mathematics concerned with modeling and analyzing random phenomena.

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### One time pad, Proof for a problem

We know 2 plaintexts of length L and 2 ciphertexts of length L(we don't know which one belongs which), assuming each given ciphertext is generated by encrypting one of the given plaintexts by XOR'ing (...
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### What is the success probability of a single exploitation attempt for these scenarios

Consider an architectural security measure intended to prevent stack buffer overflow attacks where, instead of storing the return address on the stack, the CPU stores the difference of the stack ...
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### Is it possible that a SHA256 hash has the same hex character over and over again?

In theory, there are infinite inputs, that you can hash with SHA-256. So theoretically it would be possible that one hash string would read 0xaaaaaaaa... But would ...
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### What is the best way to accurately describe this statistical probability? [closed]

I am in the process of writing some information for an App. I need to express the probability of something happening but in a way that is correct but easy to understand. I'm confused on the actual ...
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### Calculating minimum number of messages hashed a 50% probability of a collision (Birthday Paradox)

I encountered this while solving a crypto puzzle. This is the puzzle. ...
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### Conditional probability being Constant in Threshold Cryptography

I am working on Threshold implementation of algorithms to prevent side channel attacks. I am not that much proficient in Statistics and Probability theory. I want to know what is the significance of ...
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### Likelihood of signature collision with EdDSA

Taking EdDSA as an example, given the length of a signature is 512-bits for a given data payload, what is the probability of a collision where there is another 512-bit value that is also a valid ...
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