int libscrypt_hash(char *dst, char *passphrase, uint32_t N, uint8_t r, uint8_t p)
{
int retval;
char salt[16];
uint8_t hashbuf[64];
char outbuf[256];
char saltbuf[256];
libscrypt_salt_gen(salt, 16);
retval = libscrypt_scrypt((uint8_t*)passphrase,strlen(passphrase), (uint8_t*)salt, sizeof(salt), N, r, p, hashbuf, sizeof(hashbuf));
if(retval == -1)
return 0;
retval = libscrypt_b64_encode(outbuf, (char*)hashbuf, sizeof(hashbuf));
if(retval == -1)
return 0;
retval = libscrypt_b64_encode(saltbuf, salt, sizeof(salt));
if(retval == -1)
return 0;
retval = libscrypt_mcf(N, r, p, saltbuf, outbuf, dst);
if(retval == -1)
return 0;
return 1;
}
int main()
{
uint8_t hashbuf[SCRYPT_HASH_LEN];
char outbuf[132];
char mcf[SCRYPT_MCF_LEN];
char mcf2[SCRYPT_MCF_LEN];
char saltbuf[64];
int retval;
/**
* libscrypt_scrypt(passwd, passwdlen, salt, saltlen, N, r, p, buf, buflen):
* password; duh
* N: CPU AND RAM cost (first modifier)
* r: RAM Cost
* p: CPU cost (parallelisation)
* In short, N is your main performance modifier. Values of r = 8, p = 1 are
* standard unless you want to modify the CPU/RAM ratio.
int libscrypt_scrypt(const uint8_t *, size_t, const uint8_t *, size_t, uint64_t,
uint32_t, uint32_t, uint8_t *, size_t);
*/
printf("TEST ONE: Direct call to reference function with password 'password' and salt 'NaCL'\n");
retval = libscrypt_scrypt((uint8_t*)"password",strlen("password"), (uint8_t*)"NaCl", strlen("NaCl"), 1024, 8, 16, hashbuf, sizeof(hashbuf));
if(retval != 0)
{
printf("TEST ONE FAILED: Failed to create hash of \"password\"\\n");
exit(EXIT_FAILURE);
}
printf("TEST ONE: SUCCESSFUL\n");
/* Convert the binary string to hex representation. Outbuf must be
* at least sizeof(hashbuf) * 2 + 1
* Returns 0 on fail, 1 on success
*/
printf("TEST TWO: Convert binary output to hex\n");
retval = libscrypt_hexconvert(hashbuf, sizeof(hashbuf), outbuf, sizeof(outbuf));
if(!retval)
{
printf("TEST TWO: FAILED\n");
exit(EXIT_FAILURE);
}
printf("TEST TWO: SUCCESSFUL, Hex output is:\n%s\n", outbuf);
printf("TEST THREE: Compare hex output to reference hash output\n");
/* REF1 is a reference vector from Colin's implementation. */
if(strcmp(outbuf, REF1) != 0)
{
printf("TEST THREE: FAILED to match reference on hash\n");
exit(EXIT_FAILURE);
}
else
{
printf("TEST THREE: SUCCESSUL, Test vector matched!\n");
}
printf("TEST FOUR: Direct call to reference function with pleaseletmein password and SodiumChloride as salt\n");
/* Tests 4-6 repeat tests 1-3 with a different reference vector */
retval = libscrypt_scrypt((uint8_t*)"pleaseletmein",strlen("pleaseletmein"), (uint8_t*)"SodiumChloride", strlen("SodiumChloride"), 16384, 8, 1, hashbuf, sizeof(hashbuf));
if(retval != 0)
{
printf("TEST FOUR FAILED: Failed to create hash of 'pleaseletmein'\n");
exit(EXIT_FAILURE);
}
printf("TEST FOUR: SUCCESSFUL\n");
/* Convert the binary string to hex representation. Outbuf must be
* at least sizeof(hashbuf) * 2 + 1
*/
printf("TEST FIVE: Convert binary output to hex\n");
retval = libscrypt_hexconvert(hashbuf, sizeof(hashbuf), outbuf, sizeof(outbuf));
if(!retval)
{
printf("TEST FIVE: FAILED\n");
exit(EXIT_FAILURE);
}
printf("TEST FIVE: SUCCESSFUL, Hex output is:\n%s\n", outbuf);
printf("TEST SIX: Compare hex output to reference hash output\n");
if(strcmp(outbuf, REF2) != 0)
{
printf("TEST SIX: FAILED to match reference on hash\n");
exit(EXIT_FAILURE);
}
else
{
printf("TEST SIX: SUCCESSUL, Test vector matched!\n");
}
/* This function will convert the binary output to BASE64. Although
* we converted to hex for the reference vectors, BASE64 is more useful.
* Returns -1 on error, else returns length.
* Correct buffer length can be determined using the below function if
retuired.
* char* dest = (char*) malloc(modp_b64_encode_len);
*/
printf("TEST SEVEN: BASE64 encoding the salt and hash output\n");
retval = libscrypt_b64_encode(hashbuf, sizeof(hashbuf), outbuf, sizeof(outbuf));
if(retval == -1)
{
printf("TEST SEVEN FAILED\n");
exit(EXIT_FAILURE);
}
retval = libscrypt_b64_encode((unsigned char*)"SodiumChloride", strlen("SodiumChloride"), saltbuf, sizeof(saltbuf));
if(retval == -1)
{
printf("TEST SEVEN FAILED\n");
exit(EXIT_FAILURE);
}
printf("TEST SEVEN: SUCCESSFUL\n");
printf("TEST EIGHT: Create an MCF format output\n");
/* Creates a standard format output
* int crypto_scrypt_mcf(uint32_t N, uint32_t r, uint32_t p, char *salt, char *hash, char *mcf);
* Returns 0 on error, most likely reason is log2(N) not an integer.
*/
retval = libscrypt_mcf(16384, 8, 1, saltbuf, outbuf, mcf);
if(!retval)
{
printf("TEST EIGHT FAILED\n");
exit(EXIT_FAILURE);
}
printf("TEST EIGHT: SUCCESSFUL, calculated mcf\n%s\n", mcf);
/* Since later calls to scrypt_check() butcher mcf, make a second */
strcpy(mcf2, mcf);
/* Couldn't be simpler - for a given mcf, check is the password is valid
* Returns < 0 on failure to calculate hash
* 0 if password incorrect
* >1 if password correct
*/
printf("TEST NINE: Password verify on given MCF\n");
retval = libscrypt_check(mcf, "pleaseletmein");
if(retval < 0)
{
printf("TEST NINE: FAILED, hash failed to calculate\n");
exit(EXIT_FAILURE);
}
if(retval == 0)
{
printf("TEST NINE: FAILED, claimed pleaseletmein hash claimed did not verify\n");
exit(EXIT_FAILURE);
}
/* retval >0 is a success */
printf("TEST NINE: SUCCESSFUL, tested pleaseletmein password\n");
printf("TEST TEN: Password verify on same MCF, incorrect password\n");
retval = libscrypt_check(mcf2, "pleasefailme");
if(retval < 0)
{
printf("TEST TEN: FAILED, hash failed to calculate\n");
exit(EXIT_FAILURE);
}
if(retval > 0)
{
printf("TEST TEN: FAILED, fail hash has passed\n");
exit(EXIT_FAILURE);
}
printf("TEST TEN: SUCCESSFUL, refused incorrect password\n");
printf("TEST ELEVEN: Testing salt generator\n");
/* TODO: I'm not presently sure how this function could fail */
libscrypt_salt_gen((uint8_t*)saltbuf, 16);
retval = libscrypt_b64_encode((uint8_t*)saltbuf, 16, saltbuf, sizeof(saltbuf));
if(retval == -1)
{
printf("TEST ELEVEN FAILED\n");
exit(EXIT_FAILURE);
}
printf("TEST ELEVEN: SUCCESSFUL, Generated %s\n", outbuf);
printf("TEST TWELVE: Simple hash creation\n");
retval = libscrypt_hash(outbuf, "My cats's breath smells like cat food", SCRYPT_N, SCRYPT_r, SCRYPT_p);
if(!retval)
{
printf("TEST TWELVE: FAILED, Failed to create simple hash\n");
exit(EXIT_FAILURE);
}
printf("TEST TWELVE: SUCCESSFUL. Received the following from simple hash:\n%s\n", outbuf);
printf("TEST THIRTEEN: Verify test twelve's hash\n");
retval = libscrypt_check(outbuf, "My cats's breath smells like cat food");
if (retval != 1) {
printf("TEST THIRTEEN: FAILED, hash not verified\n");
exit(EXIT_FAILURE);
}
printf("TEST THIRTEEN: SUCCESSFUL\n");
return 0;
}