Add SHA-1 hashing support

xtoskrnl/includes/rtl.hh

@@ -19,6 +19,7 @@
 #include <rtl/llist.hh>
 #include <rtl/math.hh>
 #include <rtl/memory.hh>
+#include <rtl/sha1.hh>
 #include <rtl/string.hh>
 #include <rtl/widestr.hh>
 

xtoskrnl/includes/rtl/sha1.hh

@@ -0,0 +1,37 @@
+/**
+ * PROJECT:         ExectOS
+ * COPYRIGHT:       See COPYING.md in the top level directory
+ * FILE:            xtoskrnl/includes/rtl/sha1.hh
+ * DESCRIPTION:     SHA1 computation support
+ * DEVELOPERS:      Rafal Kupiec <belliash@codingworkshop.eu.org>
+ */
+
+#ifndef __XTOSKRNL_RTL_SHA1_HH
+#define __XTOSKRNL_RTL_SHA1_HH
+
+#include <xtos.hh>
+
+
+/* Runtime Library */
+namespace RTL
+{
+    class SHA1
+    {
+        public:
+            STATIC XTAPI XTSTATUS ComputeDigest(IN PCUCHAR Buffer,
+                                                IN SIZE_T BufferSize,
+                                                OUT PUCHAR Digest);
+
+        private:
+            STATIC XTAPI VOID ComputeHash(IN OUT PRTL_SHA1_CONTEXT Context,
+                                              OUT PUCHAR Digest);
+            STATIC XTAPI VOID HashData(IN OUT PRTL_SHA1_CONTEXT Context,
+                                       IN PCUCHAR Data,
+                                       IN ULONG Length);
+            STATIC XTAPI XTSTATUS InitializeContext(OUT PRTL_SHA1_CONTEXT Context);
+            STATIC XTAPI VOID TransformData(IN OUT PULONG State,
+                                            IN PCUCHAR Buffer);
+    };
+}
+
+#endif /* __XTOSKRNL_RTL_SHA1_HH */