crypt.c File Reference

#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <openssl/conf.h>
#include <openssl/evp.h>
#include <openssl/err.h>
#include "crypt.h"
#include "ev_mgr.h"
#include "utils/rlutil.h"

Macros
#define	MODULE   _ANSI_BROWN "net_crypt" _ANSI_NONE
	File: crypt.h Author: Kirill Scherba kiril.nosp@m.l@sc.nosp@m.herba.nosp@m..ru More...
#define	kev   ((ksnetEvMgrClass*)ke)

Functions
ksnCryptClass *	ksnCryptInit (void *ke)
	Module initialize. More...
void	ksnCryptDestroy (ksnCryptClass *kcr)
	Module destroy. More...
void	handleErrors (void)
size_t	_encrypt (unsigned char *plaintext, size_t plaintext_len, unsigned char *key, unsigned char *iv, void *ciphertext)
int	_decrypt (ksnCryptClass *kcr, unsigned char *ciphertext, int ciphertext_len, unsigned char *key, unsigned char *iv, unsigned char *plaintext)
	Decrypt buffer. More...
void *	ksnEncryptPackage (ksnCryptClass *kcr, void *package, size_t package_len, void *buffer, size_t *encrypt_len)
	Encrypt KSNet package. More...
void *	ksnDecryptPackage (ksnCryptClass *kcr, void *package, size_t package_len, size_t *decrypt_len)
	Decrypt received package. More...
int	ksnCheckEncrypted (void *package, size_t package_len)
	Simple check if the packet is encrypted. More...

Variables
int	num_crypt_module = 0

Macro Definition Documentation

#define kev   ((ksnetEvMgrClass*)ke)

Referenced by ksnCryptInit().

#define MODULE   _ANSI_BROWN "net_crypt" _ANSI_NONE

File: crypt.h Author: Kirill Scherba kiril.nosp@m.l@sc.nosp@m.herba.nosp@m..ru

Created on July 14, 2015, 4:04 PM

Referenced by _decrypt(), ksnDecryptPackage(), and ksnEncryptPackage().

Function Documentation

int _decrypt	(	ksnCryptClass *	kcr,
		unsigned char *	ciphertext,
		int	ciphertext_len,
		unsigned char *	key,
		unsigned char *	iv,
		unsigned char *	plaintext
	)

Decrypt buffer.

Parameters

kcr	Pointer to ksnCryptClass
ciphertext	Encrypted data
ciphertext_len	Encrypted data length
key	Key
iv	IV
plaintext	Decrypted data

Returns

Decrypted data length

References DEBUG, handleErrors(), ksnCryptClass::ke, ksn_printf, and MODULE.

Referenced by ksnDecryptPackage().

size_t _encrypt	(	unsigned char *	plaintext,
		size_t	plaintext_len,
		unsigned char *	key,
		unsigned char *	iv,
		void *	ciphertext
	)

References handleErrors().

Referenced by ksnEncryptPackage().

void handleErrors

(

void

)

Referenced by _decrypt(), and _encrypt().

int ksnCheckEncrypted	(	void *	package,
		size_t	package_len
	)

Simple check if the packet is encrypted.

Parameters

package	Pointer to package
package_len	Package length

Returns

References BLOCK_SIZE.

Referenced by ksnCoreProcessPacket(), and trudp_send_event_ack_to_app().

void ksnCryptDestroy

(

ksnCryptClass *

kcr

)

Module destroy.

Parameters

kcr

References free(), ksnCryptClass::key, and num_crypt_module.

Referenced by ksnCoreDestroy(), test_1_1(), and test_1_2().

ksnCryptClass* ksnCryptInit

(

void *

ke

)

Module initialize.

Returns

Pointer to created ksnCryptClass

References BLOCK_SIZE, ksnCryptClass::blocksize, ksnCryptClass::iv, ksnCryptClass::ke, ke, kev, ksnCryptClass::key, ksnCryptClass::key_len, KEY_SIZE, malloc(), and num_crypt_module.

Referenced by ksnCoreInit(), test_1_1(), and test_1_2().

void* ksnDecryptPackage	(	ksnCryptClass *	kcr,
		void *	package,
		size_t	package_len,
		size_t *	decrypt_len
	)

Decrypt received package.

Parameters

	kcr	Pointer to ksnetCryptClass object
	package	Pointer to received package data
	package_len	Package data length
[out]	decrypt_len	Decrypted length of package data

Returns

Pointer to decrypted package data

References _decrypt(), DEBUG_VV, free(), ksnCryptClass::iv, ksnCryptClass::ke, ksnCryptClass::key, ksn_printf, malloc(), and MODULE.

Referenced by ksnCoreProcessPacket(), and trudp_send_event_ack_to_app().

void* ksnEncryptPackage	(	ksnCryptClass *	kcr,
		void *	package,
		size_t	package_len,
		void *	buffer,
		size_t *	encrypt_len
	)

Encrypt KSNet package.

Parameters

	kcr	Pointer to ksnetCryptClass object
	package	Package to send
	package_len	Package length
	buffer	Buffer to encrypt, enough to hold encrypted data (package_len + 16)
[out]	encrypt_len	Length of encrypted data

Returns

If buffer = NULL this function return allocated pointer to encrypted buffer with data. Should be free after use. Other way it return pointer to input buffer.

References _encrypt(), ksnCryptClass::blocksize, DEBUG_VV, ksnCryptClass::iv, ksnCryptClass::ke, ksnCryptClass::key, ksn_printf, malloc(), and MODULE.

Referenced by test_1_2().

Variable Documentation

int num_crypt_module = 0

Referenced by ksnCryptDestroy(), ksnCryptInit(), test_1_1(), and test_1_2().