Cody

Problems

1 – 20 of 20
Problem Title
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Solvers
Difficulty

Problem 45282. Cryptography with A Square Matrix : Decoding

Created by: Mehmet OZC

Tags encoding, matrix, cryptography

1

8

Problem 1150. Polybius Square

Created by: Mehmet OZC

Tags encrypt, cryptography, polybius

3

36

Problem 1151. Decrypt Polybius

Created by: Mehmet OZC

Tags decrypt, cryptography, polybius

1

31

Problem 751. Implement simple rotation cypher

Created by: Doug Hull

Tags encoding, cipher, asee

12

998

Problem 1953. Simple Caesar Cypher - shift encrypt a message given an index number

Created by: Tyler

Tags cryptography

5

66

Problem 45279. Cryptography with A Square Matrix : Encoding

Created by: Mehmet OZC

Tags encoding, matrix, cryptography

2

8

Problem 44351. Code breaker, Part I: Operation Phoenix

Created by: David Verrelli

Tags speed, cipher, cryptography

1

29

Problem 44959. RSA encryption using public key

Created by: David Hill

Tags cryptography, rsa encryption

1

4

Problem 44961. RSA decryption

Created by: David Hill

Tags cryptography, rsa decryption

2

4

Problem 44963. Mask Generation Function (MGF1) for PKCS #1 Standard utilizing Optimal Asymmetric Encryption Padding for RSA Cryptography

Created by: David Hill

Tags cryptography, hash, mgf1

1

2

Problem 78. Implement a ROT13 cipher

Created by: Cody Team

Tags matlab, encoding, cipher

8

1044

Problem 44356. Code breaker, Part II: Operation Orthos

Created by: David Verrelli

Tags speed, cipher, cryptography

1

19

Problem 44956. Determine RSA keys (public and private) given two prime number character strings (p and q)

Created by: David Hill

Tags cryptography, large integer calculations

2

10

Problem 44383. Code breaker, Part III: Operation Xiangliu

Created by: David Verrelli

Tags speed, cipher, cryptography

1

8

Problem 44964. Optimal Asymmetric Encryption Padding of message for RSA Cryptography

Created by: David Hill

Tags cryptography, rsa, oaep

1

2

Problem 44965. Optimal Asymmetric Encryption Padding decoding of message for RSA Cryptography

Created by: David Hill

Tags cryptography, rsa, optimal asymmetric encryption padding

1

2

Problem 45211. AES SubBytes() Transformation

Created by: David Hill

Tags cryptography, advanced encryption standard

0

3

Problem 45212. AES MixColumns() Transformation

Created by: David Hill

Tags cryptography, advanced encryption standard

0

2

Problem 45213. AES-256 KeyExpansion()

Created by: David Hill

Tags cryptography, advanced encryption standard

0

2

Problem 44924. Create State Array for initiating SHA-3-224 Hash

Created by: David Hill

Tags cryptography, sha-3, hash

0

1
1 – 20 of 20