Linked Questions

23 questions linked to/from Definition of textbook RSA
2answers
569 views

Does order matter for RSA when used multiple times?

I actually have no idea how RSA works, but I currently (think that I) know Public and private keys are mathematically doing their opposites Therefore, the order in which they are applied doesn't ...
1answer
2k views

OpenSSL RSA same plaintext but different ciphertext

how OpenSSL RSA work ? I generate public (n,e) and private key (n,d) then I encypted a file by : ...
1answer
943 views

RSA encryption/decryption process is not working correctly

I'm trying to apply the RSA cryptosystem to encrypt a byte M=72, using predefined modulus n, public key exponent ...
1answer
915 views

I think I'm trying to find the C in an RSA cipher to find the key for an aes_128_ecb cipher, can anyone tell me if I'm on the right track?

And if I am on the right track, how do I reach the solution from here? I'm doing a CS game and I've hit a wall (I'm a rank beginner when it comes to encryption) on the encryption portion. I've been ...
1answer
601 views

RSA problem - how to find $d$ [duplicate]

For example, let $p = 3$ and $q= 11$, choose $e = 3$. What computation I have to apply in order to find the corresponding $d$? I know it's 7, but I want to know the exact process to be applied to find ...
2answers
203 views

Help with RSA step

There's one thing in RSA that haunts me. In books there's just a statement, that $$ed \equiv 1 \bmod \varphi(n)$$ is taken from Euler's function somehow. And than we use it to get m^{ed} \equiv ...
1answer
353 views

RSA How to select a value K such that $e d = 1 + k \varphi(N)$ holds

I am learning RSA cryptography. The part I am stuck on is understanding how k and the public exponent $e$ is selected. Given the formulas; Decrypting: $c^d \bmod N = (m^e)^d \bmod N$ Which is equal ...
1answer
93 views

special public keys and modulo n

I just picked up cryptography and have some questions on RSA cryptosystem: Say there are two public keys (n, e1), (n, e2), e1 is coprime to e2. They share the same n. Is it possible to find the ...

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