+/* Random bytes are good */
+static int cswift_rand_bytes(unsigned char *buf, int num)
+{
+ SW_CONTEXT_HANDLE hac;
+ SW_STATUS swrc;
+ SW_LARGENUMBER largenum;
+ size_t nbytes = 0;
+ int acquired = 0;
+ int to_return = 0; /* assume failure */
+
+ if (!get_context(&hac))
+ {
+ CSWIFTerr(CSWIFT_F_CSWIFT_CTRL, CSWIFT_R_UNIT_FAILURE);
+ goto err;
+ }
+ acquired = 1;
+
+ while (nbytes < num)
+ {
+ /* tell CryptoSwift how many bytes we want and where we want it.
+ * Note: - CryptoSwift cannot do more than 4096 bytes at a time.
+ * - CryptoSwift can only do multiple of 32-bits. */
+ largenum.value = (SW_BYTE *) buf + nbytes;
+ if (4096 > num - nbytes)
+ largenum.nbytes = num - nbytes;
+ else
+ largenum.nbytes = 4096;
+
+ swrc = p_CSwift_SimpleRequest(hac, SW_CMD_RAND, NULL, 0, &largenum, 1);
+ if (swrc != SW_OK)
+ {
+ char tmpbuf[20];
+ CSWIFTerr(CSWIFT_F_CSWIFT_CTRL, CSWIFT_R_REQUEST_FAILED);
+ sprintf(tmpbuf, "%ld", swrc);
+ ERR_add_error_data(2, "CryptoSwift error number is ", tmpbuf);
+ goto err;
+ }
+
+ nbytes += largenum.nbytes;
+ }
+ to_return = 1; /* success */
+
+err:
+ if (acquired)
+ release_context(hac);
+ return to_return;
+}
+
+static int cswift_rand_status(void)
+{
+ return 1;
+}
+
+