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Generate primes, too.

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This commit is contained in:
Ben Laurie 2005-08-23 13:48:17 +00:00
parent 770bc596e1
commit 2c2e46dbf5
1 changed files with 39 additions and 9 deletions
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32
apps/prime.c
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@ -62,6 +62,9 @@ int MAIN(int argc, char **argv)
{ {
int hex=0; int hex=0;
int checks=20; int checks=20;
int generate=0;
int bits=0;
int safe=0;
BIGNUM *bn=NULL; BIGNUM *bn=NULL;
BIO *bio_out; BIO *bio_out;
@ -77,6 +80,15 @@ int MAIN(int argc, char **argv)
{ {
if(!strcmp(*argv,"-hex")) if(!strcmp(*argv,"-hex"))
hex=1; 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")) else if(!strcmp(*argv,"-checks"))
if(--argc < 1) if(--argc < 1)
goto bad; goto bad;
@ -91,7 +103,7 @@ int MAIN(int argc, char **argv)
++argv; ++argv;
} }
if (argv[0] == NULL) if (argv[0] == NULL && !generate)
{ {
BIO_printf(bio_err,"No prime specified\n"); BIO_printf(bio_err,"No prime specified\n");
goto bad; goto bad;
@ -108,6 +120,23 @@ int MAIN(int argc, char **argv)
#endif #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) if(hex)
BN_hex2bn(&bn,argv[0]); BN_hex2bn(&bn,argv[0]);
else else
@ -116,6 +145,7 @@ int MAIN(int argc, char **argv)
BN_print(bio_out,bn); BN_print(bio_out,bn);
BIO_printf(bio_out," is %sprime\n", BIO_printf(bio_out," is %sprime\n",
BN_is_prime_ex(bn,checks,NULL,NULL) ? "" : "not "); BN_is_prime_ex(bn,checks,NULL,NULL) ? "" : "not ");
}
BN_free(bn); BN_free(bn);
BIO_free_all(bio_out); BIO_free_all(bio_out);