smalltresor.c File Reference

#include "smalltresor.h"
#include <gwenhywfar/mdigest.h>
#include <gwenhywfar/cryptkey.h>
#include <gwenhywfar/cryptdefs.h>
#include <gwenhywfar/cryptkeysym.h>
#include <gwenhywfar/padd.h>
#include <gwenhywfar/text.h>
#include <gwenhywfar/debug.h>

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Macros
#define	BLOWFISH_KEYSIZE   32
#define	DISABLE_DEBUGLOG

Functions
static int	_addRandomBytes (GWEN_BUFFER *dst, int withLength)
static int	_decode (const uint8_t *p, uint32_t len, GWEN_BUFFER *dst, int iterations)
static int	_decodeData (const uint8_t *ptr, uint32_t len, uint8_t *pOutData, uint32_t *pOutLen, const uint8_t *pKey)
static int	_encode (const uint8_t *p, uint32_t len, GWEN_BUFFER *buf, int iterations)
static int	_encodeData (const uint8_t *ptr, uint32_t len, uint8_t *pOutData, uint32_t *pOutLen, const uint8_t *pKey)
int	GWEN_SmallTresor_Decrypt (const uint8_t *p, uint32_t len, const char *password, GWEN_BUFFER *dst, int passwordIterations, int cryptIterations)
int	GWEN_SmallTresor_Encrypt (const uint8_t *src, uint32_t slen, const char *password, GWEN_BUFFER *dst, int passwordIterations, int cryptIterations)

Macro Definition Documentation

BLOWFISH_KEYSIZE

#define BLOWFISH_KEYSIZE   32

Definition at line 29 of file smalltresor.c.

DISABLE_DEBUGLOG

#define DISABLE_DEBUGLOG

Definition at line 14 of file smalltresor.c.

Function Documentation

_addRandomBytes()

static int _addRandomBytes ( GWEN_BUFFER *  dst, int  withLength  )

static

Definition at line 136 of file smalltresor.c.

References GWEN_Buffer_AdjustUsedBytes(), GWEN_Buffer_AllocRoom(), GWEN_Buffer_AppendByte(), GWEN_Buffer_GetPosPointer(), GWEN_Buffer_IncrementPos(), and GWEN_Crypt_Random().

Referenced by GWEN_SmallTresor_Encrypt().

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_decode()

static int _decode ( const uint8_t *  p, uint32_t  len, GWEN_BUFFER *  dst, int  iterations  )

static

Definition at line 183 of file smalltresor.c.

References _decodeData(), BLOWFISH_KEYSIZE, GWEN_Buffer_AdjustUsedBytes(), GWEN_Buffer_AllocRoom(), GWEN_Buffer_AppendBytes(), GWEN_Buffer_free(), GWEN_Buffer_GetPosPointer(), GWEN_Buffer_GetStart(), GWEN_Buffer_GetUsedBytes(), GWEN_Buffer_IncrementPos(), GWEN_Buffer_new(), and GWEN_Buffer_Reset().

Referenced by GWEN_SmallTresor_Decrypt().

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_decodeData()

static int _decodeData ( const uint8_t *  ptr, uint32_t  len, uint8_t *  pOutData, uint32_t *  pOutLen, const uint8_t *  pKey  )

static

Definition at line 158 of file smalltresor.c.

References BLOWFISH_KEYSIZE, GWEN_Crypt_CryptMode_Cbc, GWEN_Crypt_Key_Decipher(), GWEN_Crypt_Key_free(), GWEN_Crypt_KeyBlowFish_fromData(), and GWEN_ERROR_DECRYPT.

Referenced by _decode(), and GWEN_SmallTresor_Decrypt().

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_encode()

static int _encode ( const uint8_t *  p, uint32_t  len, GWEN_BUFFER *  buf, int  iterations  )

static

Definition at line 67 of file smalltresor.c.

References BLOWFISH_KEYSIZE, DBG_ERROR, GWEN_Buffer_AdjustUsedBytes(), GWEN_Buffer_AllocRoom(), GWEN_Buffer_AppendBytes(), GWEN_Buffer_free(), GWEN_Buffer_GetPosPointer(), GWEN_Buffer_GetStart(), GWEN_Buffer_GetUsedBytes(), GWEN_Buffer_IncrementPos(), GWEN_Buffer_new(), GWEN_Buffer_Reset(), GWEN_Crypt_CryptMode_Cbc, GWEN_Crypt_Key_Encipher(), GWEN_Crypt_Key_free(), GWEN_Crypt_KeyBlowFish_Generate(), GWEN_Crypt_KeyBlowFish_GetKeyDataPtr(), GWEN_ERROR_INTERNAL, GWEN_LOGDOMAIN, and NULL.

Referenced by GWEN_SmallTresor_Encrypt().

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_encodeData()

static int _encodeData ( const uint8_t *  ptr, uint32_t  len, uint8_t *  pOutData, uint32_t *  pOutLen, const uint8_t *  pKey  )

static

Definition at line 34 of file smalltresor.c.

References BLOWFISH_KEYSIZE, DBG_ERROR, GWEN_Crypt_CryptMode_Cbc, GWEN_Crypt_Key_Encipher(), GWEN_Crypt_Key_free(), GWEN_Crypt_KeyBlowFish_fromData(), GWEN_ERROR_ENCRYPT, and GWEN_LOGDOMAIN.

Referenced by GWEN_SmallTresor_Encrypt().

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GWEN_SmallTresor_Decrypt()

int GWEN_SmallTresor_Decrypt	(	const uint8_t *	p,
		uint32_t	len,
		const char *	password,
		GWEN_BUFFER *	dst,
		int	passwordIterations,
		int	cryptIterations
	)

Definition at line 346 of file smalltresor.c.

References _decode(), _decodeData(), BLOWFISH_KEYSIZE, DBG_ERROR, DBG_INFO, GWEN_Buffer_AdjustUsedBytes(), GWEN_Buffer_AllocRoom(), GWEN_Buffer_AppendBytes(), GWEN_Buffer_free(), GWEN_Buffer_GetPosPointer(), GWEN_Buffer_GetStart(), GWEN_Buffer_GetUsedBytes(), GWEN_Buffer_IncrementPos(), GWEN_Buffer_new(), GWEN_ERROR_BAD_DATA, GWEN_ERROR_INVALID, GWEN_LOGDOMAIN, GWEN_MDigest_free(), GWEN_MDigest_PBKDF2(), GWEN_MDigest_Sha256_new(), and GWEN_Padd_UnpaddWithIso9796_2().

Referenced by GWEN_Crypt_TokenOHBCI__DecryptTresor(), and GWEN_PasswordStore_ReadDecryptFile().

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GWEN_SmallTresor_Encrypt()

int GWEN_SmallTresor_Encrypt	(	const uint8_t *	src,
		uint32_t	slen,
		const char *	password,
		GWEN_BUFFER *	dst,
		int	passwordIterations,
		int	cryptIterations
	)

This function encrypts the given data using the given password. The key for encryption is derived from the given password using the function GWEN_MDigest_PKPDF2.

Definition at line 239 of file smalltresor.c.

References _addRandomBytes(), _encode(), _encodeData(), BLOWFISH_KEYSIZE, DBG_ERROR, GWEN_Buffer_AdjustUsedBytes(), GWEN_Buffer_AllocRoom(), GWEN_Buffer_AppendByte(), GWEN_Buffer_AppendBytes(), GWEN_Buffer_free(), GWEN_Buffer_GetPosPointer(), GWEN_Buffer_GetStart(), GWEN_Buffer_GetUsedBytes(), GWEN_Buffer_IncrementPos(), GWEN_Buffer_new(), GWEN_Crypt_Random(), GWEN_LOGDOMAIN, GWEN_MDigest_free(), GWEN_MDigest_PBKDF2(), GWEN_MDigest_Sha256_new(), and GWEN_Padd_PaddWithIso9796_2().

Referenced by GWEN_Crypt_TokenOHBCI_Write(), and GWEN_PasswordStore_EncryptWriteFile().

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