Add regress coverage for BN_lebin2bn().

diff --git a/regress/lib/libcrypto/bn/bn_convert.c b/regress/lib/libcrypto/bn/bn_convert.c
index c787036..65f0146 100644 (file)
--- a/regress/lib/libcrypto/bn/bn_convert.c
+++ b/regress/lib/libcrypto/bn/bn_convert.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: bn_convert.c,v 1.5 2024/04/09 16:06:01 tb Exp $ */
+/*     $OpenBSD: bn_convert.c,v 1.6 2024/04/17 08:51:11 jsing Exp $ */
 /*
  * Copyright (c) 2023 Joel Sing <jsing@openbsd.org>
  *
@@ -25,7 +25,6 @@
  *
  * - BN_bn2binpad()
  * - BN_bn2lebinpad()
- * - BN_lebin2bn()
  * - BN_print()/BN_print_fp()
  *
  * - Invalid inputs to {asc,dec,hex,mpi}2bn
@@ -440,9 +439,10 @@ test_bn_convert(void)
        const struct bn_convert_test *bct;
        uint8_t *mpi_out = NULL;
        char *out_str = NULL;
+       uint8_t lebin[64];
        BIGNUM *bn = NULL;
        int mpi_len;
-       size_t i;
+       size_t i, j;
        int failed = 1;
 
        for (i = 0; i < N_BN_CONVERT_TESTS; i++) {
@@ -459,6 +459,20 @@ test_bn_convert(void)
                    bn) != 0)
                        goto failure;
 
+               for (j = 0; j < bct->bin_len; j++)
+                       lebin[j] = bct->bin[bct->bin_len - j - 1];
+
+               BN_free(bn);
+               if ((bn = BN_lebin2bn(lebin, bct->bin_len, NULL)) == NULL) {
+                       fprintf(stderr, "FAIL: BN_lebin2bn() failed\n");
+                       goto failure;
+               }
+               BN_set_negative(bn, bct->neg);
+
+               if (check_bin_output(i, "BN_lebin2bn()", bct->bin, bct->bin_len,
+                   bn) != 0)
+                       goto failure;
+
                free(out_str);
                if ((out_str = BN_bn2dec(bn)) == NULL) {
                        fprintf(stderr, "FAIL: BN_bn2dec() failed\n");