--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rvinterf/etmsync/pirimei.c	Tue Sep 08 18:59:29 2015 +0000
@@ -0,0 +1,44 @@
+/*
+ * Reading and decryption of Pirelli's factory IMEI record
+ */
+
+#include <sys/types.h>
+#include <openssl/des.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <strings.h>
+#include "exitcodes.h"
+
+u_char pirelli_imeisv[8];
+
+get_pirelli_imei()
+{
+	DES_cblock ciphertext[2], dieid_key, decrypted[2];
+	DES_key_schedule keysched;
+	int rc;
+	static char failmsg[] =
+	"decryption failed: no valid IMEI record or incompatible firmware\n";
+
+	printf("Requesting Calypso die ID\n");
+	rc = do_dieid_read(dieid_key);
+	if (rc)
+		return(rc);
+	printf("Reading IMEI record in Pirelli's factory data block\n");
+	rc = do_memory_read(0x027F0504, ciphertext, 16);
+	if (rc)
+		return(rc);
+	DES_set_key_unchecked(&dieid_key, &keysched);
+	DES_ecb_encrypt(&ciphertext[0], &decrypted[0], &keysched, DES_DECRYPT);
+	DES_ecb_encrypt(&ciphertext[1], &decrypted[1], &keysched, DES_DECRYPT);
+	if (bcmp(decrypted[1], dieid_key, 8)) {
+		printf(failmsg);
+		return(ERROR_TARGET);
+	}
+	bcopy(decrypted[1], pirelli_imeisv, 8);
+	printf("Factory IMEISV is %02X%02X%02X%02X-%02X%02X%02X-%02X\n",
+		pirelli_imeisv[0], pirelli_imeisv[1], pirelli_imeisv[2],
+		pirelli_imeisv[3], pirelli_imeisv[4], pirelli_imeisv[5],
+		pirelli_imeisv[6], pirelli_imeisv[7]);
+	return(0);
+}