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#### Resources tagged with Codes and cryptography similar to Factorial Fun:

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### There are 19 results

Broad Topics > Applications > Codes and cryptography

### Transposition Cipher

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

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

### Substitution Transposed

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

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

### Vital?

##### Stage: 5 Challenge Level:

Third challenge cipher

### Up a Semitone?

##### Stage: 5 Challenge Level:

Fifth challenge cipher

### Ip?

##### Stage: 5 Challenge Level:

Seventh challenge cipher

### A Fine Thing?

##### Stage: 5 Challenge Level:

Second challenge cipher

### Jluuis or Even Asutguus?

##### Stage: 5 Challenge Level:

Sixth challenge cipher

### Semicircle

##### Stage: 5 Challenge Level:

Fourth challenge cipher

### Stage 5 Cipher Challenge

##### Stage: 5 Challenge Level:

Can you crack these very difficult challenge ciphers? How might you systematise the cracking of unknown ciphers?

### More Secret Transmissions

##### Stage: 5 Challenge Level:

In 'Secret Transmissions', Agent X could send four-digit codes error free. Can you devise an error-correcting system for codes with more than four digits?

### 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?

### Substitution Cipher

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

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

### 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.

### 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!

### 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!

### 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?

### Probably a Code?

##### Stage: 5 Challenge Level:

Is the regularity shown in this encoded message noise or structure?

First cipher

### 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?