crypto::AES128CFB8Cipher Class Reference

AES/CFB8 128bit cipher class. More...

#include <crypto.h>

Public Member Functions
	AES128CFB8Cipher (CipherState state, const std::byte *key, const std::byte *iv)
	Construct a new AES/CFB8 128bit cipher object.
	~AES128CFB8Cipher ()
	Destroy the AES/CFB8 128bit cipher object.
int	update (const std::byte *data, size_t len, std::byte *out)
	Updates, encrypting or decrypting depending on the state.
int	finalize (std::byte *out)
	Finalizes cipher, encrypting / decrypting the rest of the bytes.
size_t	calculateBufferSize (size_t len)
	Calculates minimal buffer size for the cipher.

Detailed Description

AES/CFB8 128bit cipher class.

I know, it is a really long name for a class, but it clearly explains what it does instead of just "cipher". So shut up and accept my beautiful naming talents.

Joking, the name should be changed if someone finds something better. Naming things in programming is too hard.

Constructor & Destructor Documentation

AES128CFB8Cipher()

crypto::AES128CFB8Cipher::AES128CFB8Cipher	(	CipherState	state,
		const std::byte *	key,
		const std::byte *	iv )

Construct a new AES/CFB8 128bit cipher object.

Minecraft doesn't really need both key and iv params, but who knows ! Maybe this very specific piece of code will help someone later on !

Parameters

state	The cipher state of the cipher
key	The key to use with AES
iv	The IV to use with AES

~AES128CFB8Cipher()

crypto::AES128CFB8Cipher::~AES128CFB8Cipher

(

)

Destroy the AES/CFB8 128bit cipher object.

Pretty much explicit. Finally we destroy that longe-named class !

Member Function Documentation

calculateBufferSize()

size_t crypto::AES128CFB8Cipher::calculateBufferSize

(

size_t

len

)

Calculates minimal buffer size for the cipher.

Calculates the minimal buffer size for the cipher, just for the sake of over-optimizing.

Parameters

len	the length of the input data

Returns

size_t the minimal size of the buffer to use

finalize()

int crypto::AES128CFB8Cipher::finalize

(

std::byte *

out

)

Finalizes cipher, encrypting / decrypting the rest of the bytes.

Encrypts or decrypts the remaining bytes in out and returns the written length.

Parameters

out	the buffer to write into

Returns

int the size written

update()

int crypto::AES128CFB8Cipher::update	(	const std::byte *	data,
		size_t	len,
		std::byte *	out )

Updates, encrypting or decrypting depending on the state.

Encrypts or Decrypts the content in data of size len and stores it in out and returns the written size The out buffer should be at least of the length calculated by AES128CFB8Cipher::calculateBufferSize()

Parameters

data	the data to read then encrypt / decrypt
len	the length of the data to read
out	the output buffer

Returns

int the length of the buffer

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The documentation for this class was generated from the following files:

• src/utils/crypto.h
• src/utils/crypto.cpp