SHA1Context *
SHA1_Resurrect(unsigned char *space,void *arg)
{
SHA1Context *cx = SHA1_NewContext();
if (cx == NULL) return NULL;
PORT_Memcpy(cx,space, sizeof(SHA1Context));
return cx;
}
/* take string password and turn it into a key. The key is dependent
* on a global salt entry acquired from the database. This salted
* value will be based to a pkcs5 pbe function before it is used
* in an actual encryption */
static SECStatus
sftkdb_passwordToKey(SFTKDBHandle *keydb, SECItem *salt,
const char *pw, SECItem *key)
{
SHA1Context *cx = NULL;
SECStatus rv = SECFailure;
key->data = PORT_Alloc(SHA1_LENGTH);
if (key->data == NULL) {
goto loser;
}
key->len = SHA1_LENGTH;
cx = SHA1_NewContext();
if (cx == NULL) {
goto loser;
}
SHA1_Begin(cx);
if (salt && salt->data) {
SHA1_Update(cx, salt->data, salt->len);
}
SHA1_Update(cx, (unsigned char *)pw, PORT_Strlen(pw));
SHA1_End(cx, key->data, &key->len, key->len);
rv = SECSuccess;
loser:
if (cx) {
SHA1_DestroyContext(cx, PR_TRUE);
}
if (rv != SECSuccess) {
if (key->data != NULL) {
PORT_ZFree(key->data, key->len);
}
key->data = NULL;
}
return rv;
}