diff --git a/src/crypto/des.c b/src/crypto/des.c
index 206f78d50..a7fad9829 100644
--- a/src/crypto/des.c
+++ b/src/crypto/des.c
@@ -22,6 +22,7 @@
  */
 
 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
+FILE_SECBOOT ( PERMITTED );
 
 /** @file
  *
diff --git a/src/crypto/mschapv2.c b/src/crypto/mschapv2.c
index ac55fec17..f5fc8829c 100644
--- a/src/crypto/mschapv2.c
+++ b/src/crypto/mschapv2.c
@@ -22,6 +22,7 @@
  */
 
 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
+FILE_SECBOOT ( PERMITTED );
 
 /** @file
  *
diff --git a/src/include/ipxe/des.h b/src/include/ipxe/des.h
index 755a90ea0..9c1c24e57 100644
--- a/src/include/ipxe/des.h
+++ b/src/include/ipxe/des.h
@@ -8,6 +8,7 @@
  */
 
 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
+FILE_SECBOOT ( PERMITTED );
 
 #include <ipxe/crypto.h>
 
diff --git a/src/include/ipxe/mschapv2.h b/src/include/ipxe/mschapv2.h
index 59cf37eee..e39b46335 100644
--- a/src/include/ipxe/mschapv2.h
+++ b/src/include/ipxe/mschapv2.h
@@ -8,6 +8,7 @@
  */
 
 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
+FILE_SECBOOT ( PERMITTED );
 
 #include <stdint.h>
 
diff --git a/src/net/eap_mschapv2.c b/src/net/eap_mschapv2.c
index 0be62ed59..791fad540 100644
--- a/src/net/eap_mschapv2.c
+++ b/src/net/eap_mschapv2.c
@@ -22,6 +22,7 @@
  */
 
 FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
+FILE_SECBOOT ( PERMITTED );
 
 #include <stdlib.h>
 #include <string.h>