third-party libs

third-party/openssl-1.0.0d/apps/prime.c

@@ -0,0 +1,160 @@
+/* ====================================================================
+ * Copyright (c) 2004 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer. 
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include <string.h>
+
+#include "apps.h"
+#include <openssl/bn.h>
+
+
+#undef PROG
+#define PROG prime_main
+
+int MAIN(int, char **);
+
+int MAIN(int argc, char **argv)
+    {
+    int hex=0;
+    int checks=20;
+    int generate=0;
+    int bits=0;
+    int safe=0;
+    BIGNUM *bn=NULL;
+    BIO *bio_out;
+
+    apps_startup();
+
+    if (bio_err == NULL)
+	if ((bio_err=BIO_new(BIO_s_file())) != NULL)
+	    BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);
+
+    --argc;
+    ++argv;
+    while (argc >= 1 && **argv == '-')
+	{
+	if(!strcmp(*argv,"-hex"))
+	    hex=1;
+	else if(!strcmp(*argv,"-generate"))
+	    generate=1;
+	else if(!strcmp(*argv,"-bits"))
+	    if(--argc < 1)
+		goto bad;
+	    else
+		bits=atoi(*++argv);
+	else if(!strcmp(*argv,"-safe"))
+	    safe=1;
+	else if(!strcmp(*argv,"-checks"))
+	    if(--argc < 1)
+		goto bad;
+	    else
+		checks=atoi(*++argv);
+	else
+	    {
+	    BIO_printf(bio_err,"Unknown option '%s'\n",*argv);
+	    goto bad;
+	    }
+	--argc;
+	++argv;
+	}
+
+    if (argv[0] == NULL && !generate)
+	{
+	BIO_printf(bio_err,"No prime specified\n");
+	goto bad;
+	}
+
+    if ((bio_out=BIO_new(BIO_s_file())) != NULL)
+	{
+	BIO_set_fp(bio_out,stdout,BIO_NOCLOSE);
+#ifdef OPENSSL_SYS_VMS
+	    {
+	    BIO *tmpbio = BIO_new(BIO_f_linebuffer());
+	    bio_out = BIO_push(tmpbio, bio_out);
+	    }
+#endif
+	}
+
+    if(generate)
+	{
+	char *s;
+
+	if(!bits)
+	    {
+	    BIO_printf(bio_err,"Specifiy the number of bits.\n");
+	    return 1;
+	    }
+	bn=BN_new();
+	BN_generate_prime_ex(bn,bits,safe,NULL,NULL,NULL);
+	s=hex ? BN_bn2hex(bn) : BN_bn2dec(bn);
+	BIO_printf(bio_out,"%s\n",s);
+	OPENSSL_free(s);
+	}
+    else
+	{
+	if(hex)
+	    BN_hex2bn(&bn,argv[0]);
+	else
+	    BN_dec2bn(&bn,argv[0]);
+
+	BN_print(bio_out,bn);
+	BIO_printf(bio_out," is %sprime\n",
+		   BN_is_prime_ex(bn,checks,NULL,NULL) ? "" : "not ");
+	}
+
+    BN_free(bn);
+    BIO_free_all(bio_out);
+
+    return 0;
+
+    bad:
+    BIO_printf(bio_err,"options are\n");
+    BIO_printf(bio_err,"%-14s hex\n","-hex");
+    BIO_printf(bio_err,"%-14s number of checks\n","-checks <n>");
+    return 1;
+    }