1 files changed, 129 insertions, 0 deletions

diff --git a/src/regress/lib/libcrypto/mlkem/mlkem768_keygen_tests.c b/src/regress/lib/libcrypto/mlkem/mlkem768_keygen_tests.c
new file mode 100644
index 0000000000..60c3983dea
--- /dev/null
+++ b/src/regress/lib/libcrypto/mlkem/mlkem768_keygen_tests.c
@@ -0,0 +1,129 @@
+/* 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 <openssl/evp.h>
+
+#include "bytestring.h"
+#include "mlkem.h"
+#include "mlkem_internal.h"
+#include "sha3_internal.h"
+#include "mlkem_tests_util.h"
+
+static int
+encode_private_key(const struct MLKEM768_private_key *priv, uint8_t **out_buf,
+    size_t *out_len)
+{
+        CBB cbb;
+        if (!CBB_init(&cbb, MLKEM768_PUBLIC_KEY_BYTES))
+                return 0;
+        if (!MLKEM768_marshal_private_key(&cbb, priv))
+                return 0;
+        if (!CBB_finish(&cbb, out_buf, out_len))
+                return 0;
+        CBB_cleanup(&cbb);
+        return 1;
+}
+
+static void
+MlkemKeygenFileTest(CBS *seed, CBS *public_key, CBS *private_key)
+{
+        struct MLKEM768_private_key priv;
+        uint8_t *encoded_private_key = NULL;
+        uint8_t encoded_public_key[MLKEM768_PUBLIC_KEY_BYTES];
+        size_t len;
+
+        TEST(CBS_len(seed) != MLKEM_SEED_BYTES, "seed len bogus");
+        TEST(CBS_len(private_key) != MLKEM768_PRIVATE_KEY_BYTES,
+            "expected private key len bogus");
+        TEST(CBS_len(public_key) != MLKEM768_PUBLIC_KEY_BYTES,
+            "expected public key len bogus");
+        MLKEM768_generate_key_external_entropy(encoded_public_key, &priv,
+            CBS_data(seed));
+        TEST(!encode_private_key(&priv, &encoded_private_key,
+            &len), "encode_private_key");
+        TEST(len != MLKEM768_PRIVATE_KEY_BYTES, "private key len bogus");
+        TEST_DATAEQ(encoded_public_key, CBS_data(public_key),
+            MLKEM768_PUBLIC_KEY_BYTES, "public key");
+        TEST_DATAEQ(encoded_private_key, CBS_data(private_key),
+            MLKEM768_PRIVATE_KEY_BYTES, "private key");
+        free(encoded_private_key);
+}
+
+#define S_START 0
+#define S_SEED 1
+#define S_PUBLIC_KEY  2
+#define S_PRIVATE_KEY   3
+
+int
+main(int argc, char **argv)
+{
+        CBS seed, public_key, private_key;
+        char *buf;
+        FILE *fp;
+        int state;
+
+        fprintf(stderr, "Testing keygen test vectors in %s\n", argv[1]);
+        TEST((fp = fopen(argv[1], "r")) == NULL, "can't open test file");
+        MALLOC(buf, 16*1024);
+        state = S_SEED;
+        test_number = 1;
+        while (fgets(buf, 16*1024, fp) != NULL) {
+                switch (state) {
+                case S_START:
+                        if (strcmp(buf, "\n") != 0)
+                                break;
+                        state = S_SEED;
+                        break;
+                case S_SEED:
+                        if (strncmp(buf, "seed: ", strlen("seed: ")) != 0) {
+                                break;
+                        }
+                        grab_data(&seed, buf, strlen("seed: "));
+                        state = S_PUBLIC_KEY;
+                        break;
+                case S_PUBLIC_KEY:
+                        if (strncmp(buf, "public_key: ",
+                            strlen("public_key: ")) != 0)
+                                break;
+                        grab_data(&public_key, buf, strlen("public_key: "));
+                        state = S_PRIVATE_KEY;
+                        break;
+                case S_PRIVATE_KEY:
+                        if (strncmp(buf, "private_key: ",
+                            strlen("private_key: ")) != 0)
+                                break;
+                        grab_data(&private_key, buf, strlen("private_key: "));
+                        state = S_START;
+                        break;
+
+                        MlkemKeygenFileTest(&seed, &public_key, &private_key);
+                        free((void *)CBS_data(&seed));
+                        free((void *)CBS_data(&public_key));
+                        free((void *)CBS_data(&private_key));
+
+                        test_number++;
+                        state = S_START;
+                        break;
+                }
+        }
+
+        free(buf);
+        exit(failure);
+}