difference between crypting and coding?

[come on man]

Idk if this is the proper place where I should post this,but I will give it a shot.

can someone tell me what's the difference between coding message and crypting message?Like in the movie Citizenfour when Edward Snowden used to send some coded messages which you see like symbols or just some random numbers and letters,but if you decode them,you see the original text...whats the difference between that and encrypted stuff?like Encrypted data,HDD

[Mira Yurizaki]

I'm going to assume you mean "encoding" vs. "encrypting", as "coding" is used out of context and "crypting" isn't really a word.

 

Encoding means converting data from one format into another. This a generic term and it can mean any piece of data. An example of this is encoding a raw video stream into a compressed one like H.264. Or taking a raw picture in as a grid of pixel values and turning it into a JPEG file.

 

Encrypting is a subset of encoding. It's still the same thing: converting data from one format into another. But it's specially crafted so that you need another piece of the puzzle to actually turn it back into its original form. With encoding, you just need to know the algorithm and its reverse (usually). With encrypting, along with the algorithm, you have a secret key of sorts that further scrambles the data. So even if you know the algorithm, you can't exactly get anything meaningful out of the encrypted data unless you have its key.

[tikker]

Technically there's a difference between enconding something and encrypting something, but they're often used interchangeably in the context of cryptography. Taken from this nice reference: https://danielmiessler.com/study/encoding-encryption-hashing-obfuscation/

Quote

• Encoding is for maintaining data usability and can be reversed by employing the same algorithm that encoded the content, i.e. no key is used.
• Encryption is for maintaining data confidentiality and requires the use of a key (kept secret) in order to return to plaintext.

 

[Unhelpful]

19 minutes ago, M.Yurizaki said:

I'm going to assume you mean "encoding" vs. "encrypting", as "coding" is used out of context and "crypting" isn't really a word.

 

Encoding means converting data from one format into another. This a generic term and it can mean any piece of data. An example of this is encoding a raw video stream into a compressed one like H.264. Or taking a raw picture in as a grid of pixel values and turning it into a JPEG file.

 

Encrypting is a subset of encoding. It's still the same thing: converting data from one format into another. But it's specially crafted so that you need another piece of the puzzle to actually turn it back into its original form. With encoding, you just need to know the algorithm and its reverse (usually). With encrypting, along with the algorithm, you have a secret key of sorts that further scrambles the data. So even if you know the algorithm, you can't exactly get anything meaningful out of the encrypted data unless you have its key.

I'd also like to add hashing, where you cannot reverse the string back into it's original form.

[Syntaxvgm]

coding a message is converting it to code that will print out the message.

Crypting a message is putting it in a coffin and placing said coffin in a crypt.