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#### Resources tagged with Codes and cryptography similar to Substitution Cipher:

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### There are 9 results

Broad Topics > Applications > Codes and cryptography

### Substitution Cipher

##### Stage: 3 Challenge Level:

Find the frequency distribution for ordinary English, and use it to help you crack the code.

### Substitution Transposed

##### Stage: 3 and 4 Challenge Level:

Substitution and Transposition all in one! How fiendish can these codes get?

### Secondary Cipher Challenge Part 1

##### Stage: 3 and 4 Challenge Level:

Here is the start of a six-part challenge. Can you get to the end and crack the final message?

### Transposition Cipher

##### Stage: 3 and 4 Challenge Level:

Can you work out what size grid you need to read our secret message?

### Secret Transmissions

##### Stage: 4 Challenge Level:

How can Agent X transmit data on a faulty line and be sure that her message will get through?

### Cipher Challenge Toolkit

##### Stage: 3, 4 and 5 Challenge Level:

Our toolkit removes the drudgery of codebreaking while leaving you to do the hard thinking!

### James's Code Challenge

##### Stage: 2, 3, 4 and 5 Challenge Level:

The Enigma Project's James Grime has created a video code challenge. Watch it here!

### Keeping it Safe and Quiet

##### Stage: 2, 3, 4 and 5

Simon Singh describes PKC, its origins, and why the science of code making and breaking is such a secret occupation.

### The Best Card Trick?

##### Stage: 3 and 4 Challenge Level:

Time for a little mathemagic! Choose any five cards from a pack and show four of them to your partner. How can they work out the fifth?