From aa4d426b4d3527d7e166df1a05058c9a4a0f6683 Mon Sep 17 00:00:00 2001
From: Wojtek Kosior <wk@koszkonutek-tmp.pl.eu.org>
Date: Fri, 30 Apr 2021 00:33:56 +0200
Subject: initial/final commit

---
 openssl-1.1.0h/apps/prime.c | 132 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 132 insertions(+)
 create mode 100644 openssl-1.1.0h/apps/prime.c

(limited to 'openssl-1.1.0h/apps/prime.c')

diff --git a/openssl-1.1.0h/apps/prime.c b/openssl-1.1.0h/apps/prime.c
new file mode 100644
index 0000000..c12463d
--- /dev/null
+++ b/openssl-1.1.0h/apps/prime.c
@@ -0,0 +1,132 @@
+/*
+ * Copyright 2004-2018 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#include <string.h>
+
+#include "apps.h"
+#include <openssl/bn.h>
+
+typedef enum OPTION_choice {
+    OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
+    OPT_HEX, OPT_GENERATE, OPT_BITS, OPT_SAFE, OPT_CHECKS
+} OPTION_CHOICE;
+
+OPTIONS prime_options[] = {
+    {OPT_HELP_STR, 1, '-', "Usage: %s [options] [number...]\n"},
+    {OPT_HELP_STR, 1, '-',
+        "  number Number to check for primality\n"},
+    {"help", OPT_HELP, '-', "Display this summary"},
+    {"hex", OPT_HEX, '-', "Hex output"},
+    {"generate", OPT_GENERATE, '-', "Generate a prime"},
+    {"bits", OPT_BITS, 'p', "Size of number in bits"},
+    {"safe", OPT_SAFE, '-',
+     "When used with -generate, generate a safe prime"},
+    {"checks", OPT_CHECKS, 'p', "Number of checks"},
+    {NULL}
+};
+
+int prime_main(int argc, char **argv)
+{
+    BIGNUM *bn = NULL;
+    int hex = 0, checks = 20, generate = 0, bits = 0, safe = 0, ret = 1;
+    char *prog;
+    OPTION_CHOICE o;
+
+    prog = opt_init(argc, argv, prime_options);
+    while ((o = opt_next()) != OPT_EOF) {
+        switch (o) {
+        case OPT_EOF:
+        case OPT_ERR:
+opthelp:
+            BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
+            goto end;
+        case OPT_HELP:
+            opt_help(prime_options);
+            ret = 0;
+            goto end;
+        case OPT_HEX:
+            hex = 1;
+            break;
+        case OPT_GENERATE:
+            generate = 1;
+            break;
+        case OPT_BITS:
+            bits = atoi(opt_arg());
+            break;
+        case OPT_SAFE:
+            safe = 1;
+            break;
+        case OPT_CHECKS:
+            checks = atoi(opt_arg());
+            break;
+        }
+    }
+    argc = opt_num_rest();
+    argv = opt_rest();
+
+    if (generate) {
+        if (argc != 0) {
+            BIO_printf(bio_err, "Extra arguments given.\n");
+            goto opthelp;
+        }
+    } else if (argc == 0) {
+        BIO_printf(bio_err, "%s: No prime specified\n", prog);
+        goto opthelp;
+    }
+
+    if (generate) {
+        char *s;
+
+        if (!bits) {
+            BIO_printf(bio_err, "Specify the number of bits.\n");
+            goto end;
+        }
+        bn = BN_new();
+        if (bn == NULL) {
+            BIO_printf(bio_err, "Out of memory.\n");
+            goto end;
+        }
+        if (!BN_generate_prime_ex(bn, bits, safe, NULL, NULL, NULL)) {
+            BIO_printf(bio_err, "Failed to generate prime.\n");
+            goto end;
+        }
+        s = hex ? BN_bn2hex(bn) : BN_bn2dec(bn);
+        if (s == NULL) {
+            BIO_printf(bio_err, "Out of memory.\n");
+            goto end;
+        }
+        BIO_printf(bio_out, "%s\n", s);
+        OPENSSL_free(s);
+    } else {
+        for ( ; *argv; argv++) {
+            int r;
+
+            if (hex)
+                r = BN_hex2bn(&bn, argv[0]);
+            else
+                r = BN_dec2bn(&bn, argv[0]);
+
+            if(!r) {
+                BIO_printf(bio_err, "Failed to process value (%s)\n", argv[0]);
+                goto end;
+            }
+
+            BN_print(bio_out, bn);
+            BIO_printf(bio_out, " (%s) %s prime\n",
+                       argv[0],
+                       BN_is_prime_ex(bn, checks, NULL, NULL)
+                           ? "is" : "is not");
+        }
+    }
+
+    ret = 0;
+ end:
+    BN_free(bn);
+    return ret;
+}
-- 
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