1 files changed, 70 insertions, 0 deletions
diff --git a/c_implementation/tests/test_sha512_string.c b/c_implementation/tests/test_sha512_string.c
new file mode 100644
index 0000000..e7b9d21
--- /dev/null
+++ b/c_implementation/tests/test_sha512_string.c
@@ -0,0 +1,70 @@
+#include <stdio.h>
+#include <stdbool.h>
+#include <assert.h>
+
+//#include <test_sha512_string.h>
+
+typedef struct {
+    long unsigned int sum[8];
+} sha512sum;
+
+void shifting_example()
+{
+    long unsigned int X = 0xf;
+    for ( long unsigned i = 0; i < 64; i=i+4 )
+    {
+        printf("shift[%02lu]:\t%#018lx\n", i, X << i);
+    }
+}
+
+void structed_sum()
+{
+    sha512sum struct_sample = {
+        .sum[0] = 0x921618bc6d9f8059,
+        .sum[1] = 0x437c5e0397b13f97,
+        .sum[2] = 0x3ab7c7a7b81f0ca3,
+        .sum[3] = 0x1b70bf448fd800a4,
+        .sum[4] = 0x60b67efda0020088,
+        .sum[5] = 0xbc97bf7d9da97a9e,
+        .sum[6] = 0x2ce7b20d46e06646,
+        .sum[7] = 0x2ec44cf60284f9a7
+    };
+    printf("stru:\t");
+    for ( long unsigned i = 0; i < 8; ++i )
+    {
+        printf("%lx", struct_sample.sum[i]);
+    }
+    printf("\n");
+}
+
+void long_unsigned_example()
+{
+    printf("hex:\t%#018lx\n",0xffffffffffffffff);
+}
+
+void char_based_sum()
+{
+    char sum_sample[] = "921618bc6d9f8059437c5e0397b13f973ab7c7a7b81f0ca31b70bf448fd800a460b67efda0020088bc97bf7d9da97a9e2ce7b20d46e066462ec44cf60284f9a7";
+//    printf("Size:\t%08lu\n",sizeof(sum_sample));
+//    printf("String:\t%s\n",sum_sample);
+//    printf("Last:\t%c\n",sum_sample[sizeof(sum_sample)-2]); // Null byte
+    printf("Loop:\t"); // Null byte
+    for ( long unsigned i = 0; i < sizeof(sum_sample)-1; ++i )
+    {
+        assert (( sum_sample[i] >= 0x30 ) && (( sum_sample[i] <= 0x39) || ( sum_sample[i] >= 0x60 )) && ( sum_sample[i] <= 0x66 ));
+        printf("%c", sum_sample[i]);
+//            printf(" 0x%x", sum_sample[i]);
+    }
+    printf("\n");
+}
+
+int main (void)
+{
+    char_based_sum();
+    structed_sum();
+    long_unsigned_example();
+    shifting_example();
+
+    return 0;
+}
+