# Questions tagged [rsa]

An asymmetric (e.g. public-key) cryptosystem, based on modular exponentiation with big exponents and modulus. RSA can be used both for signature and encryption with proper paddings.

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### possibility to encrypt data using AES and RSA frequently? [closed]

I am doing a research for encrypting data, I found many research doing multiple encryption using DES and RSA ? but in symmetric cryptography the best algorithm is AES so I need to do multiple ...
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### How do I calculate the encrypted messages for the text?

Alice would like to communicate with Bob using RSA procedures. She thinks of two numbers $p = 3$, $q = 13$, and calculates $n = p · q = 39$. Note: Only RSA trapdoor function can be used. Bob would ...
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### Decrypting an RSA message given $a^2 \equiv 1 \pmod n$

I need help with a practice problem for an upcoming test. I've learned the answer to the problem is "well done", but don't know how to get there. Any help is greatly appreciated. Suppose that the ...
545 views

### Is triple des similiar to RSA in that they message size is limited to the key size?

Is Triple DES similiar to RSA in that the message size you can encrypt is limited (unlike AES)? Yes you can break the message size into parts and apply it, but I'm not interested in doing that so I ...
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### HOW TO IDENTIFY CRYPTOGRAPHIC ALGORITHM [closed]

I don't know how to identify that it has been encrypted with which algorithm. Text: yh6H2Zf89UgxQBd+q2G2RcvlxnFHzwHGUrV/H7LmA/xtm7V9HnYFJ71T2rsGcnmQUKmaeqnE/8mELxjpNrl/UoGg/kCtiK8+buZN17Nn7Rc+...
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### RSA: Is there a way to increase the partially encrypt data without knowing the private key?

EDITED QUESTION FOR A BETTER EXPLAINATION I have this crypted information (RSA): ...
3k views

### Where is RSA applied in real life?

For instance, I know that the BlackBerry uses a form of ECC built-in for data protection. But would like to know if either the iPhone or Android smartphones, for instance, use a form of RSA? If RSA ...
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### How to find $e$ when $p,q,d$ are given?

I have solved till here ..... $$n=p*q$$ $$n=5*11$$ $$\varphi(n)=(p-1)*(q-1)=4*10=40$$ Now, how to find $e$, when $d$ is given as $27$ and message for encryption is $\text{abcdefghij}$. We have to take ...