1 files changed, 70 insertions, 0 deletions

diff --git a/src/regress/lib/libcrypto/mlkem/mlkem_tests_util.c b/src/regress/lib/libcrypto/mlkem/mlkem_tests_util.c
new file mode 100644
index 0000000000..ee73e19267
--- /dev/null
+++ b/src/regress/lib/libcrypto/mlkem/mlkem_tests_util.c
@@ -0,0 +1,70 @@
+/* Copyright (c) 2024, Google Inc.
+ * Copyright (c) 2024, Bob Beck <beck@obtuse.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
+ * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
+
+#include <err.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "mlkem_tests_util.h"
+
+int failure;
+int test_number;
+
+void
+hexdump(const uint8_t *buf, size_t len, const uint8_t *compare)
+{
+        const char *mark = "";
+        size_t i;
+
+        for (i = 1; i <= len; i++) {
+                if (compare != NULL)
+                        mark = (buf[i - 1] != compare[i - 1]) ? "*" : " ";
+                fprintf(stderr, " %s0x%02hhx,%s", mark, buf[i - 1],
+                    i % 8 && i != len ? "" : "\n");
+        }
+        fprintf(stderr, "\n");
+}
+
+int
+hex_decode(char *buf, size_t len, uint8_t **out_buf, size_t *out_len)
+{
+        size_t i;
+        if (*out_buf != NULL)
+                abort(); /* Du hast einin rotweinflarsche... */
+
+        MALLOC(*out_buf, len);
+        *out_len = 0;
+
+        for (i = 0; i < len; i += 2) {
+                if (sscanf(buf + i, "%2hhx", *out_buf + *out_len) != 1)
+                        err(1, "FAIL- hex decode failed for %d\n",
+                            (int)*out_len);
+                (*out_len)++;
+        }
+        return 1;
+}
+
+void
+grab_data(CBS *cbs, char *buf, size_t offset)
+{
+        char *start = buf + offset;
+        size_t len = strlen(start);
+        uint8_t *new = NULL;
+        size_t new_len = 0;
+        /* This is hex encoded - decode it. */
+        TEST(!hex_decode(start, len - 1, &new, &new_len), "hex decode failed");
+        CBS_init(cbs, new, new_len);
+}