xnu-1699.22.73.tar.gz

[apple/xnu.git] / bsd / crypto / aes / Assert.c

diff --git a/bsd/crypto/aes/Assert.c b/bsd/crypto/aes/Assert.c
new file mode 100644 (file)
index 0000000..5ba9c44
--- /dev/null
+++ b/bsd/crypto/aes/Assert.c
@@ -0,0 +1,34 @@
+/*     This module exists solely to check compile-time assertions.  It should be
+       compiled when building the project, and building should be terminated if
+       errors are encountered.  However, any object it produces need not be
+       included in the build.
+*/
+
+
+#include <stddef.h>
+
+#include "crypto/aes.h"
+#include "Context.h"
+
+/*     Declare CheckAssertion so that if any of the declarations below differ
+       from it, the compiler will report an error.
+*/
+extern char CheckAssertion[1];
+
+/*     Ensure that ContextKey is the offset of the ks member of the AES context
+       structures.
+*/
+extern char CheckAssertion[ContextKey == offsetof(aes_encrypt_ctx, ks)];
+extern char CheckAssertion[ContextKey == offsetof(aes_decrypt_ctx, ks)];
+       /*      If these assertions fail, change the definition of ContextKey in
+               Context.h to match the offset of the ks field.
+       */
+
+/*     Ensure that ContextKeyLength is the offset of the inf member of the AES
+       context structures.
+*/
+extern char CheckAssertion[ContextKeyLength == offsetof(aes_encrypt_ctx, inf)];
+extern char CheckAssertion[ContextKeyLength == offsetof(aes_decrypt_ctx, inf)];
+       /*      If these assertions fail, change the definition of ContextKeyLength in
+               Context.h to match the offset of the inf field.
+       */