ProtocolPP::jsnowv Class Reference

Public Types
enum	dir_t { SNOWV_DEC , SNOWV_ENC }
enum	mode_t { SNOWV , SNOWV_GCM }

Public Member Functions
	jsnowv (dir_t dir, mode_t mode, uint8_t *key, uint32_t keylen, uint8_t *iv, uint32_t ivlen)
	~jsnowv ()
	Standard deconstructor.
void	ProcessData (const uint8_t *input, uint8_t *output, int length, uint8_t *aad=nullptr, int aadlen=0)
void	context (uint16_t *ctx)
void	result (uint8_t *icv, uint32_t icvlen)
uint32_t	result_size ()
	jsnowv (jsnowv &rhs)=delete
	jsnowv (const jsnowv &rhs)=delete

Member Enumeration Documentation

dir_t

enum ProtocolPP::jsnowv::dir_t

Direction of processing for SNOWV SNOWV_DEC - Decrypt data SNOWV_ENC - Encrypt data

mode_t

enum ProtocolPP::jsnowv::mode_t

Mode of operation for SNOWV SNOWV - Stream mode for SNOWV SNOWV_GCM - GCM AEAD mode for SNOWV

Constructor & Destructor Documentation

jsnowv()

ProtocolPP::jsnowv::jsnowv	(	dir_t	dir,
		mode_t	mode,
		uint8_t *	key,
		uint32_t	keylen,
		uint8_t *	iv,
		uint32_t	ivlen
	)

Interface for SnowV encryption

Parameters

dir	- Direction of the data
mode	- Mode of operation (SNOWV or SNOWV_GCM)
key	- Key for encryption of the data
keylen	- Key length for encryption of the data
iv	- Initialization vector
ivlen	- IV length for encryption of the data

Member Function Documentation

context()

void ProtocolPP::jsnowv::context

(

uint16_t *

ctx

)

Returns the keystream state for rebuilding the engine later

Parameters

ctx	- context ordered as a, b, r1, r2, r3 as 44 uint16_t

ProcessData()

void ProtocolPP::jsnowv::ProcessData	(	const uint8_t *	input,
		uint8_t *	output,
		int	length,
		uint8_t *	aad = nullptr,
		int	aadlen = 0
	)

Calculates either the ciphertext or plaintext based on dir using a bitlength that is passed to the function

Parameters

input	- either the ciphertext or plaintext to be calculated
output	- result of encryption process
length	- bit length
aad	- authentication only data (should be nullptr for SNOWV mode)
aadlen	- length of the authentication only data (should be zero for SNOWV mode)

result()

void ProtocolPP::jsnowv::result	(	uint8_t *	icv,
		uint32_t	icvlen
	)

Returns the calculated ICV

Parameters

icv	- calculated ICV
icvlen	- length of the ICV (must be 16)

result_size()

uint32_t ProtocolPP::jsnowv::result_size

(

)

Size of the result

Returns

size of the result or ICV

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

• include/jsnowv.h