ProtocolPP::jsnow3g Class Reference

Public Types
enum	dir_t { SNOW3G_UPLINK , SNOW3G_DOWNLINK }

Public Member Functions
	jsnow3g (dir_t dir, uint8_t *key, uint32_t keylen, uint32_t count, uint8_t bearer)
	jsnow3g (dir_t dir, uint8_t *key, uint32_t keylen, uint32_t count, uint32_t fresh)
	jsnow3g (dir_t dir, uint32_t *ctx, uint32_t ctxlen)
	~jsnow3g ()
	Standard deconstructor.
void	ProcessData (const uint8_t *input, uint8_t *output, int length)
void	ProcessData (const uint8_t *input, uint64_t length)
void	context (uint32_t *context)
void	result (uint8_t *icv)
uint32_t	result_size ()
	jsnow3g (jsnow3g &rhs)=delete
	jsnow3g (const jsnow3g &rhs)=delete

Member Enumeration Documentation

dir_t

enum ProtocolPP::jsnow3g::dir_t

Direction of processing for SNOW3G SNOW3G_UPLINK - User to tower SNOW3G_DOWNLINK - Tower to user

Constructor & Destructor Documentation

jsnow3g() [1/3]

ProtocolPP::jsnow3g::jsnow3g	(	dir_t	dir,
		uint8_t *	key,
		uint32_t	keylen,
		uint32_t	count,
		uint8_t	bearer
	)

Interface for Snow-3G encryption

Parameters

dir	- Direction of the data
key	- Key for encryption of the data
keylen	- Key length for encryption of the data
count	- Count value to generate key stream
bearer	- Bearer value for initialize the cipher

jsnow3g() [2/3]

ProtocolPP::jsnow3g::jsnow3g	(	dir_t	dir,
		uint8_t *	key,
		uint32_t	keylen,
		uint32_t	count,
		uint32_t	fresh
	)

Interface for Snow-3G authentication

Parameters

dir	- Direction of the data
key	- Key for authentication of the data
keylen	- Key length for authentication of the data
count	- Count value to generate key stream
fresh	- Fresh value for initialize the authenticator

jsnow3g() [3/3]

ProtocolPP::jsnow3g::jsnow3g	(	dir_t	dir,
		uint32_t *	ctx,
		uint32_t	ctxlen
	)

Interface for Snow-3G authentication

Parameters

dir	- Direction of the data
ctx	- Context (keystream data) to rebuild engine
ctxlen	- Length of context in words (should be 19)

Member Function Documentation

context()

void ProtocolPP::jsnow3g::context

(

uint32_t *

context

)

Retrieves the context of the engine returns current keystream context during processing, 19 word pointer expected

ProcessData() [1/2]

void ProtocolPP::jsnow3g::ProcessData	(	const uint8_t *	input,
		uint64_t	length
	)

Authenticates the input

Parameters

input	- data to authenticate
length	- bit length

ProcessData() [2/2]

void ProtocolPP::jsnow3g::ProcessData	(	const uint8_t *	input,
		uint8_t *	output,
		int	length
	)

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

result()

void ProtocolPP::jsnow3g::result

(

uint8_t *

icv

)

Retrieves the result of the authentication returns icv result of the authentication process

result_size()

uint32_t ProtocolPP::jsnow3g::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/jsnow3g.h