Public Types
enum	EncryptMode { ECB = 0, CBC = 1, CFB = 2 }

enum	{ DEFAULT_BLOCK_SIZE = 16 }

enum	{ MAX_BLOCK_SIZE = 32, MAX_ROUNDS = 14, MAX_KC = 8, MAX_BC = 8 }

Static Public Member Functions
static PROUD_API bool	ExpandFrom (CCryptoAesKey &outKey, const uint8_t *const inputKey, int keyLength=DEFAULT_BLOCK_SIZE, int blockSize=DEFAULT_BLOCK_SIZE)

static int	GetEncryptSize (const CCryptoAesKey &key, int inputLength)

static bool	Encrypt (const CCryptoAesKey &key, const uint8_t const input, int inputLength, uint8_t output, int &outputLength, uint8_t *initializationVector=NULL, int initializationVectorLength=0, EncryptMode encryptMode=ECB)

static bool	Decrypt (const CCryptoAesKey &key, const uint8_t const input, int inputLength, uint8_t output, int &outputLength, uint8_t *initializationVector=NULL, int initializationVectorLength=0, EncryptMode encryptMode=ECB)

static bool	EncryptByteArray (const CCryptoAesKey &key, const ByteArray &input, ByteArray &output, uint8_t *initializationVector=NULL, int initializationVectorLength=0, EncryptMode encryptMode=ECB)

static PROUD_API bool	DecryptByteArray (const CCryptoAesKey &key, const ByteArray &input, ByteArray &output, uint8_t *initializationVector=NULL, int initializationVectorLength=0, EncryptMode encryptMode=ECB)

static PROUD_API bool	EncryptMessage (const CCryptoAesKey &key, const CMessage &input, CMessage &output, int offset, uint8_t *initializationVector=NULL, int initializationVectorLength=0, EncryptMode encryptMode=ECB)

static PROUD_API bool	DecryptMessage (const CCryptoAesKey &key, const CMessage &input, CMessage &output, int offset, uint8_t *initializationVector=NULL, int initializationVectorLength=0, EncryptMode encryptMode=ECB)

Detailed Description

Rijndael (pronounced Reindaal) is a block cipher, designed by Joan Daemen and Vincent Rijmen as a candidate algorithm for the AES. The cipher has a variable block length and key length. The authors currently specify how to use keys with a length of 128, 192, or 256 bits to encrypt blocks with length of 128, 192 or 256 bits (all nine combinations of key length and block length are possible). Both block length and key length can be extended very easily to multiples of 32 bits.

Rijndael can be implemented very efficiently on a wide range of processors and in hardware.

This implementation is based on the Java Implementation used with the Cryptix toolkit found at: http://www.efgh.com/software/rijndael.zip

Java code authors: Raif S. Naffah, Paulo S. L. M. Barreto

This Implementation was tested against KAT test published by the authors of the method and the results were identical.

Member Enumeration Documentation

enum Proud::CCryptoAes::EncryptMode

ECB, CBC, CFB Mode
ECB Mode: when the same block is encrypted twice, the original unencrypted test appears.
CBC mode: the previous block and xor calculation is encrypted afterwards.
CFB mode: after the block is encrypted, it does xor calculation with the previous block.

Member Function Documentation

static bool Proud::CCryptoAes::Decrypt	(	const CCryptoAesKey &	key,
		const uint8_t *const	input,
		int	inputLength,
		uint8_t *	output,
		int &	outputLength,
		uint8_t *	initializationVector = `NULL`,
		int	initializationVectorLength = `0`,
		EncryptMode	encryptMode = `ECB`
	)

static

Decrypt data

Parameters

key	Symmetric key
input	Encrypted message
inputLength	Size of Encrypted message
output	Decrypted result value
outputLength	Size of Decrypted text
initializationVector	Initialization Vector (IV) for CBC or CFB mode encryption.
initializationVectorLength	Length of initializationVector in bytes.
encryptMode	Encryption mode. (ECB, CBC, CFB mode)

static PROUD_API bool Proud::CCryptoAes::DecryptByteArray	(	const CCryptoAesKey &	key,
		const ByteArray &	input,
		ByteArray &	output,
		uint8_t *	initializationVector = `NULL`,
		int	initializationVectorLength = `0`,
		EncryptMode	encryptMode = `ECB`
	)

static

Decrypt ByteArray

Parameters

key	Symmetric key
input	Encrypted message
output	Decrypted result value
initializationVector	Initialization Vector (IV) for CBC or CFB mode encryption.
initializationVectorLength	Length of initializationVector in bytes.
encryptMode	Encryption mode. (ECB, CBC, CFB mode)

static PROUD_API bool Proud::CCryptoAes::DecryptMessage	(	const CCryptoAesKey &	key,
		const CMessage &	input,
		CMessage &	output,
		int	offset,
		uint8_t *	initializationVector = `NULL`,
		int	initializationVectorLength = `0`,
		EncryptMode	encryptMode = `ECB`
	)

static

Decrypt Message

Parameters

key	Symmetric key
input	Encrypted message
output	Decrypted result value
offset	Decrypt start position at encrypted message
initializationVector	Initialization Vector (IV) for CBC or CFB mode encryption.
initializationVectorLength	Length of initializationVector in bytes.
encryptMode	Encryption mode. (ECB, CBC, CFB mode)

static bool Proud::CCryptoAes::Encrypt	(	const CCryptoAesKey &	key,
		const uint8_t *const	input,
		int	inputLength,
		uint8_t *	output,
		int &	outputLength,
		uint8_t *	initializationVector = `NULL`,
		int	initializationVectorLength = `0`,
		EncryptMode	encryptMode = `ECB`
	)

static

Encrypt data

Parameters

key	Symmetric key
input	Plain text message
inputLength	Size of plain text
output	Encrypted result value
outputLength	Size of Encrypted result
initializationVector	Initialization Vector (IV) for CBC or CFB mode encryption.
initializationVectorLength	Length of initializationVector in bytes.
encryptMode	Encryption mode. (ECB, CBC, CFB mode)

static bool Proud::CCryptoAes::EncryptByteArray	(	const CCryptoAesKey &	key,
		const ByteArray &	input,
		ByteArray &	output,
		uint8_t *	initializationVector = `NULL`,
		int	initializationVectorLength = `0`,
		EncryptMode	encryptMode = `ECB`
	)

static

Encrypt ByteArray

Parameters

key	Symmetric key
input	Plain text message
output	Encrypted result value
initializationVector	Initialization Vector (IV) for CBC or CFB mode encryption.
initializationVectorLength	Length of initializationVector in bytes.
encryptMode	Encryption mode. (ECB, CBC, CFB mode)

static PROUD_API bool Proud::CCryptoAes::EncryptMessage	(	const CCryptoAesKey &	key,
		const CMessage &	input,
		CMessage &	output,
		int	offset,
		uint8_t *	initializationVector = `NULL`,
		int	initializationVectorLength = `0`,
		EncryptMode	encryptMode = `ECB`
	)

static

Encrypt Message

Parameters

key	Symmetric key
input	Plain text message
output	Encrypted result value
offset	Encrypt start position at plain text message
initializationVector	Initialization Vector (IV) for CBC or CFB mode encryption.
initializationVectorLength	Length of initializationVector in bytes.
encryptMode	Encryption mode. (ECB, CBC, CFB mode)

static PROUD_API bool Proud::CCryptoAes::ExpandFrom	(	CCryptoAesKey &	outKey,
		const uint8_t *const	inputKey,
		int	keyLength = `DEFAULT_BLOCK_SIZE`,
		int	blockSize = `DEFAULT_BLOCK_SIZE`
	)

static

TODO:translate needed. When the length of the key and the block is 128bit – 9 rounds

When the length of the key and the block is 192bit – 9 rounds
When the length of the key and the block is 256bit – 9 rounds
Block size: size that can be encrypted at once.

Parameters

outKey	Generated encryption key is saved
inputKey	The 128/192/256-bit can be used and this is the random block data to make the initial Aes key.
keyLength	It’s either 16, 24 or 32 bytes
This	is the block size within the Aes algorithm (16, 24 or 32 bytes).

static int Proud::CCryptoAes::GetEncryptSize	(	const CCryptoAesKey &	key,
		int	inputLength
	)

static

Parameters

key	Symmetric key
inputLength	Size of plain text

Returns: Size of Encrypted result

Public Types

Static Public Member Functions

Detailed Description

Member Enumeration Documentation

Member Function Documentation