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-rw-r--r--utils/tomcrypt/src/misc/compare_testvector.c87
1 files changed, 87 insertions, 0 deletions
diff --git a/utils/tomcrypt/src/misc/compare_testvector.c b/utils/tomcrypt/src/misc/compare_testvector.c
new file mode 100644
index 0000000000..67fe1c1f9a
--- /dev/null
+++ b/utils/tomcrypt/src/misc/compare_testvector.c
@@ -0,0 +1,87 @@
+/* LibTomCrypt, modular cryptographic library -- Tom St Denis
+ *
+ * LibTomCrypt is a library that provides various cryptographic
+ * algorithms in a highly modular and flexible manner.
+ *
+ * The library is free for all purposes without any express
+ * guarantee it works.
+ */
+
+#include "tomcrypt.h"
+
+/**
+ @file compare_testvector.c
+ Function to compare two testvectors and print a (detailed) error-message if required, Steffen Jaeckel
+*/
+
+#if defined(LTC_TEST) && defined(LTC_TEST_DBG)
+static void _print_hex(const char* what, const void* v, const unsigned long l)
+{
+ const unsigned char* p = v;
+ unsigned long x, y = 0, z;
+ fprintf(stderr, "%s contents: \n", what);
+ for (x = 0; x < l; ) {
+ fprintf(stderr, "%02X ", p[x]);
+ if (!(++x % 16) || x == l) {
+ if((x % 16) != 0) {
+ z = 16 - (x % 16);
+ if(z >= 8)
+ fprintf(stderr, " ");
+ for (; z != 0; --z) {
+ fprintf(stderr, " ");
+ }
+ }
+ fprintf(stderr, " | ");
+ for(; y < x; y++) {
+ if((y % 8) == 0)
+ fprintf(stderr, " ");
+ if(isgraph(p[y]))
+ fprintf(stderr, "%c", p[y]);
+ else
+ fprintf(stderr, ".");
+ }
+ fprintf(stderr, "\n");
+ }
+ else if((x % 8) == 0) {
+ fprintf(stderr, " ");
+ }
+ }
+}
+#endif
+
+/**
+ Compare two test-vectors
+
+ @param is The data as it is
+ @param is_len The length of is
+ @param should The data as it should
+ @param should_len The length of should
+ @param what The type of the data
+ @param which The iteration count
+ @return 0 on equality, -1 or 1 on difference
+*/
+int compare_testvector(const void* is, const unsigned long is_len, const void* should, const unsigned long should_len, const char* what, int which)
+{
+ int res = 0;
+ if(is_len != should_len)
+ res = is_len > should_len ? -1 : 1;
+ else
+ res = XMEMCMP(is, should, is_len);
+
+#if defined(LTC_TEST) && defined(LTC_TEST_DBG)
+ if (res != 0) {
+ fprintf(stderr, "Testvector #%i of %s failed:\n", which, what);
+ _print_hex("SHOULD", should, should_len);
+ _print_hex("IS ", is, is_len);
+ }
+#else
+ LTC_UNUSED_PARAM(which);
+ LTC_UNUSED_PARAM(what);
+#endif
+
+ return res;
+}
+
+/* ref: HEAD -> master, tag: v1.18.2 */
+/* git commit: 7e7eb695d581782f04b24dc444cbfde86af59853 */
+/* commit time: 2018-07-01 22:49:01 +0200 */