/* This entry point is equivalent to crypt(3). */
char *
crypt_sha512(const char *key, const char *salt)
{
/* We don't want to have an arbitrary limit in the size of the
* password. We can compute an upper bound for the size of the
* result in advance and so we can prepare the buffer we pass to
* `crypt_sha512_r'. */
static char *buffer;
static int buflen;
int needed;
char *new_buffer;
needed = (sizeof(sha512_salt_prefix) - 1
+ sizeof(sha512_rounds_prefix) + 9 + 1
+ strlen(salt) + 1 + 86 + 1);
if (buflen < needed) {
new_buffer = (char *)realloc(buffer, needed);
if (new_buffer == NULL)
return NULL;
buffer = new_buffer;
buflen = needed;
}
return crypt_sha512_r(key, salt, buffer, buflen);
}
char* crypt_sha512(const char *key, const char *salt, size_t rounds)
{
char *buffer;
buffer = (char *) malloc(OUTPUT_SHA512_LEN + 1);
if (buffer == NULL)
{
fprintf(stderr, "error : memory allocation failed\n");
return NULL;
}
return crypt_sha512_r(key, salt, rounds, buffer, OUTPUT_SHA512_LEN + 1);
}
