tkey-libs: Import tag fw-4 of tkey-libs

- Use tag fw-4 from https://github.com/tillitis/tkey-libs/

hw/application_fpga/tkey-libs/blake2s/blake2s_test.c

@@ -0,0 +1,138 @@
+//======================================================================
+//
+// blake2s_test.c
+// --------------
+//
+//======================================================================
+
+#include <stdio.h>
+#include "blake2s.h"
+
+
+//------------------------------------------------------------------
+//------------------------------------------------------------------
+void print_message(uint8_t *m, int mlen) {
+  printf("The message:\n");
+  for (int i = 1 ; i <= mlen ; i++) {
+    printf("0x%02x ", m[(i - 1)]);
+    if (i % 8 == 0) {
+      printf("\n");
+    }
+  }
+  printf("\n");
+}
+
+
+//------------------------------------------------------------------
+//------------------------------------------------------------------
+void print_digest(uint8_t *md) {
+  printf("The digest:\n");
+  for (int j = 0 ; j < 4 ; j++) {
+    for (int i = 0 ; i < 8 ; i++) {
+      printf("0x%02x ", md[i + 8 * j]);
+    }
+    printf("\n");
+  }
+  printf("\n");
+}
+
+
+//------------------------------------------------------------------
+// test_zero_length()
+// Test with a zero length mwssage.
+//------------------------------------------------------------------
+void test_zero_length() {
+
+  uint8_t md[32];
+
+  printf("Testing zero byte message.\n");
+  blake2s(md, 32, NULL, 0, NULL, 0);
+  print_digest(md);
+  printf("\n");
+}
+
+
+//------------------------------------------------------------------
+// test_abc_message()
+// Test with a zero length mwssage.
+//------------------------------------------------------------------
+void test_abc_message() {
+
+  uint8_t md[32];
+  uint8_t msg[64] = {'a', 'b', 'c'};
+
+  printf("Testing with RFC 7693 three byte 'abc' message.\n");
+  print_message(msg, 3);
+
+  blake2s(md, 32, NULL, 0, msg, 3);
+  print_digest(md);
+  printf("\n");
+}
+
+
+//------------------------------------------------------------------
+// test_one_block_message()
+// Test with a 64 byte message, filling one block.
+//------------------------------------------------------------------
+void test_one_block_message() {
+
+  uint8_t md[32];
+  uint8_t msg[64];
+
+  for (uint8_t i = 0 ; i < 64 ; i++) {
+    msg[i] = i;
+  }
+
+  printf("Testing with 64 byte message.\n");
+  print_message(msg, 64);
+
+  blake2s(md, 32, NULL, 0, msg, 64);
+  print_digest(md);
+  printf("\n");
+}
+
+
+//------------------------------------------------------------------
+// test_one_block_one_byte_message()
+// Test with a 65 byte message, filling one block and a single
+// byte in the next block.
+//------------------------------------------------------------------
+void test_one_block_one_byte_message() {
+
+  uint8_t md[32];
+  uint8_t msg[65];
+
+  for (uint8_t i = 0 ; i < 65 ; i++) {
+    msg[i] = i;
+  }
+
+  printf("Testing with 65 byte message.\n");
+  print_message(msg, 65);
+
+  blake2s(md, 32, NULL, 0, msg, 65);
+  print_digest(md);
+  printf("\n");
+}
+
+
+//------------------------------------------------------------------
+//------------------------------------------------------------------
+int main(void) {
+  printf("\n");
+  printf("BLAKE2s reference model started. Performing a set of tests..\n");
+  printf("Performing a set of tests.\n");
+
+  test_zero_length();
+  test_abc_message();
+  test_one_block_message();
+  test_one_block_one_byte_message();
+
+  printf("BLAKE2s reference model completed.\n");
+  printf("\n");
+
+  return 0;
+}
+
+//======================================================================
+/// EOF blake2s_test.c
+//======================================================================