ss-util.h

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/* ss-util.h - Secure Storage utility function header file
 * ====================================================================
 * Copyright (c) Giordano Scuderi, Unico SRL.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by Giordano Scuderi
 *    for Unico SRL"
 *
 * 4. The names "Secure Storage" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    gscuderi@unicosrl.it.
 *
 * 5. Products derived from this software may not be called "Secure Storage"
 *    nor may "Secure Storage" appear in their names without prior written
 *    permission of Giordano Scuderi (Unico SRL).
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by Giordano Scuderi
 *    for Unico SRL"
 *
 * THIS SOFTWARE IS PROVIDED BY UNICO SRL ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL UNICO SRL OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
 * 
 */

#ifdef __cplusplus
extern "C" {
#endif

#if defined(_MSC_VER) && (defined(_M_IX86) || defined(_M_AMD64) || defined(_M_X64))
# define SWAP(x) (_lrotl(x, 8) & 0x00ff00ff | _lrotr(x, 8) & 0xff00ff00)
# define GETU32(p) SWAP(*((u32 *)(p)))
# define PUTU32(ct, st) { *((u32 *)(ct)) = SWAP((st)); }
#else
# define GETU32(pt) (((u32)(pt)[0] << 24) ^ ((u32)(pt)[1] << 16) ^ ((u32)(pt)[2] <<  8) ^ ((u32)(pt)[3]))
# define PUTU32(ct, st) { (ct)[0] = (u8)((st) >> 24); (ct)[1] = (u8)((st) >> 16); (ct)[2] = (u8)((st) >>  8); (ct)[3] = (u8)(st); }
#endif

#ifdef AES_LONG
typedef unsigned long u32;
#else
typedef unsigned int u32;
#endif
typedef unsigned short u16;
typedef unsigned char u8;

#define MAXKC   (256/32)
#define MAXKB   (256/8)
#define MAXNR   14

/* This controls loop-unrolling in aes_core.c */
#undef FULL_UNROLL

#define AES_BLOCK_SIZE 16
#define AES_MAXNR 14
#define KEYSIZE 16
#define HEX_KEYSIZE 32
#define IVSIZE 8
#define HEX_IVSIZE 16

// \struct This struct is used by AES encryption
struct aes_key_st {
#ifdef AES_LONG
    unsigned long rd_key[4 *(AES_MAXNR + 1)];
#else
    unsigned int rd_key[4 *(AES_MAXNR + 1)];
#endif
    int rounds;
};
typedef struct aes_key_st AES_KEY;


 size_t lock_memory(char *addr, size_t size);


 size_t unlock_memory(char *addr, size_t size);


//static 
void ivec_inc(unsigned char *counter);


//static 
void ivec_dec(unsigned char *counter);


void securestorage_AES_ctr(const unsigned char *in, unsigned char *out,
        const unsigned long length, const AES_KEY *key,
        unsigned char ivec[AES_BLOCK_SIZE],
        unsigned char ecount_buf[AES_BLOCK_SIZE],
        unsigned int *num);
        

 int AES_set_encrypt_key(const unsigned char *userKey, const int bits,
                        AES_KEY *key);
                        

 int AES_set_decrypt_key(const unsigned char *userKey, const int bits,
                         AES_KEY *key);
                         

 void AES_encrypt(const unsigned char *in, unsigned char *out,
                 const AES_KEY *key);
                 

 void AES_decrypt(const unsigned char *in, unsigned char *out,
                 const AES_KEY *key);
 

 int ss_rand (int size, unsigned char *out);
 
 
 int ss_generate_surl (char **dest_surl, char *dest_file, char *vo, char *guid);
 

 int ss_get_lfchome ( const char *input_lfn, char **lfn_new );


 int ss_get_surl ( char *lfn, char **surl, char *vo, char *se, int insecure );


 int ss_check_lfn ( char *lfn, char *vo);


const char *securestorage_error(int errnum);


#ifdef __cplusplus
} /* closing brace for extern "C" */
#endif           

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