1 files changed, 67 insertions, 0 deletions

diff --git a/src/lib/libcrypto/des/dess.cpp b/src/lib/libcrypto/des/dess.cpp
new file mode 100644
index 0000000000..7fb5987314
--- /dev/null
+++ b/src/lib/libcrypto/des/dess.cpp
@@ -0,0 +1,67 @@
+//
+// gettsc.inl
+//
+// gives access to the Pentium's (secret) cycle counter
+//
+// This software was written by Leonard Janke (janke@unixg.ubc.ca)
+// in 1996-7 and is entered, by him, into the public domain.
+
+#if defined(__WATCOMC__)
+void GetTSC(unsigned long&);
+#pragma aux GetTSC = 0x0f 0x31 "mov [edi], eax" parm [edi] modify [edx eax];
+#elif defined(__GNUC__)
+inline
+void GetTSC(unsigned long& tsc)
+{
+  asm volatile(".byte 15, 49\n\t"
+               : "=eax" (tsc)
+               :
+               : "%edx", "%eax");
+}
+#elif defined(_MSC_VER)
+inline
+void GetTSC(unsigned long& tsc)
+{
+  unsigned long a;
+  __asm _emit 0fh
+  __asm _emit 31h
+  __asm mov a, eax;
+  tsc=a;
+}
+#endif      
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "des.h"
+
+void main(int argc,char *argv[])
+        {
+        des_key_schedule key;
+        unsigned long s1,s2,e1,e2;
+        unsigned long data[2];
+        int i,j;
+
+        for (j=0; j<6; j++)
+                {
+                for (i=0; i<1000; i++) /**/
+                        {
+                        des_encrypt(&data[0],key,1);
+                        GetTSC(s1);
+                        des_encrypt(&data[0],key,1);
+                        des_encrypt(&data[0],key,1);
+                        des_encrypt(&data[0],key,1);
+                        GetTSC(e1);
+                        GetTSC(s2);
+                        des_encrypt(&data[0],key,1);
+                        des_encrypt(&data[0],key,1);
+                        des_encrypt(&data[0],key,1);
+                        des_encrypt(&data[0],key,1);
+                        GetTSC(e2);
+                        des_encrypt(&data[0],key,1);
+                        }
+
+                printf("des %d %d (%d)\n",
+                        e1-s1,e2-s2,((e2-s2)-(e1-s1)));
+                }
+        }
+