Cryptography Degree options in more math-heavy Cryptography

December 23, 2017

Cryptography Degree options in more math-heavy Cryptography

Degree options in more math-heavy Cryptography
Noob question about this simple data masking scheme
Tutanota Is the First to Enable Search on Encrypted Data

Degree options in more math-heavy Cryptography

Posted: 22 Dec 2017 11:42 PM PST

Hey, I'm currently a Math major undergrad in the US interested in getting into Cryptography. Ideally, I'd like to get a PhD in either Crypto-related Pure Math degree or Cryptography/Theoretical CS degree and get an industry job (or an academic job, but I'm not really counting on it) which utilizes more math-heavy aspects of Cryptography.

Are there any such 'mathy' programs? Any suggestions are welcome!

Also, I was wondering at what level I should know Probability Theory before applying to such programs?

submitted by /u/newmeta44
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Noob question about this simple data masking scheme

Posted: 22 Dec 2017 04:00 PM PST

I'm a noob in cryptography, so I have failed to google the answer I'm looking for because I don't know how to even describe it correctly. I hope someone will help me here!

Lets say I have some string that I want to securely store, but instead of encrypting it to look like random garbage, I want to encrypt it to look like some other data.

Question 1: how is this process called? Is this steganography or something else?

Currently I'm interested in something simple like taking plaintext of certain length and calculating a key of the same length that would encrypt it into an arbitrary ciphertext. Example:

CAT (plaintext) + ANM (key) = DOG (ciphertext)

Question 2:

Is it possible to derive the plaintext from the key alone?

If plaintext was already encrypted by some other algorithm, would this scheme weaken that encryption if someone would have acess to both key and ciphertext?

Can someone point me out to where can I read more about about relationships between encryption and data hiding?

submitted by /u/Satoshi_Hodler
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Tutanota Is the First to Enable Search on Encrypted Data

Posted: 22 Dec 2017 04:17 AM PST

submitted by /u/johnmountain
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