Merge tag 'trace-v5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux...

[platform/kernel/linux-starfive.git] / include / crypto / gcm.h

diff --git a/include/crypto/gcm.h b/include/crypto/gcm.h
index c50e057..9d7eff0 100644 (file)
--- a/include/crypto/gcm.h
+++ b/include/crypto/gcm.h
@@ -1,8 +1,63 @@
 #ifndef _CRYPTO_GCM_H
 #define _CRYPTO_GCM_H
 
+#include <linux/errno.h>
+
 #define GCM_AES_IV_SIZE 12
 #define GCM_RFC4106_IV_SIZE 8
 #define GCM_RFC4543_IV_SIZE 8
 
+/*
+ * validate authentication tag for GCM
+ */
+static inline int crypto_gcm_check_authsize(unsigned int authsize)
+{
+       switch (authsize) {
+       case 4:
+       case 8:
+       case 12:
+       case 13:
+       case 14:
+       case 15:
+       case 16:
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+/*
+ * validate authentication tag for RFC4106
+ */
+static inline int crypto_rfc4106_check_authsize(unsigned int authsize)
+{
+       switch (authsize) {
+       case 8:
+       case 12:
+       case 16:
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       return 0;
+}
+
+/*
+ * validate assoclen for RFC4106/RFC4543
+ */
+static inline int crypto_ipsec_check_assoclen(unsigned int assoclen)
+{
+       switch (assoclen) {
+       case 16:
+       case 20:
+               break;
+       default:
+               return -EINVAL;
+       }
+
+       return 0;
+}
 #endif