537 lines
10 KiB
C
537 lines
10 KiB
C
#include <openssl/opensslconf.h>
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#ifndef OPENSSL_FIPS
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#include <stdio.h>
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int main(int argc, char **argv)
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{
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printf("No FIPS DSA support\n");
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return(0);
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}
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#else
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#include <openssl/bn.h>
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#include <openssl/dsa.h>
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#include <openssl/fips.h>
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#include <openssl/err.h>
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#include <openssl/evp.h>
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#include <string.h>
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#include <ctype.h>
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#include "fips_utl.h"
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static void pbn(const char *name, BIGNUM *bn)
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{
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int len, i;
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unsigned char *tmp;
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len = BN_num_bytes(bn);
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tmp = OPENSSL_malloc(len);
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if (!tmp)
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{
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fprintf(stderr, "Memory allocation error\n");
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return;
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}
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BN_bn2bin(bn, tmp);
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printf("%s = ", name);
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for (i = 0; i < len; i++)
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printf("%02X", tmp[i]);
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fputs("\n", stdout);
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OPENSSL_free(tmp);
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return;
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}
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static void primes()
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{
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char buf[10240];
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char lbuf[10240];
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char *keyword, *value;
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while(fgets(buf,sizeof buf,stdin) != NULL)
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{
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fputs(buf,stdout);
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if (!parse_line(&keyword, &value, lbuf, buf))
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continue;
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if(!strcmp(keyword,"Prime"))
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{
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BIGNUM *pp;
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pp=BN_new();
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do_hex2bn(&pp,value);
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printf("result= %c\n",
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BN_is_prime_ex(pp,20,NULL,NULL) ? 'P' : 'F');
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}
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}
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}
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static void pqg()
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{
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char buf[1024];
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char lbuf[1024];
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char *keyword, *value;
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int nmod=0;
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while(fgets(buf,sizeof buf,stdin) != NULL)
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{
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if (!parse_line(&keyword, &value, lbuf, buf))
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{
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fputs(buf,stdout);
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continue;
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}
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if(!strcmp(keyword,"[mod"))
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nmod=atoi(value);
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else if(!strcmp(keyword,"N"))
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{
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int n=atoi(value);
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printf("[mod = %d]\n\n",nmod);
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while(n--)
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{
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unsigned char seed[20];
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DSA *dsa;
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int counter;
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unsigned long h;
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dsa = FIPS_dsa_new();
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if (!DSA_generate_parameters_ex(dsa, nmod,seed,0,&counter,&h,NULL))
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{
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do_print_errors();
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exit(1);
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}
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pbn("P",dsa->p);
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pbn("Q",dsa->q);
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pbn("G",dsa->g);
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pv("Seed",seed,20);
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printf("c = %d\n",counter);
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printf("H = %lx\n",h);
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putc('\n',stdout);
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}
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}
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else
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fputs(buf,stdout);
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}
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}
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static void pqgver()
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{
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char buf[1024];
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char lbuf[1024];
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char *keyword, *value;
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BIGNUM *p = NULL, *q = NULL, *g = NULL;
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int counter, counter2;
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unsigned long h, h2;
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DSA *dsa=NULL;
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int nmod=0;
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unsigned char seed[1024];
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while(fgets(buf,sizeof buf,stdin) != NULL)
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{
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if (!parse_line(&keyword, &value, lbuf, buf))
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{
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fputs(buf,stdout);
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continue;
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}
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fputs(buf, stdout);
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if(!strcmp(keyword,"[mod"))
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nmod=atoi(value);
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else if(!strcmp(keyword,"P"))
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p=hex2bn(value);
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else if(!strcmp(keyword,"Q"))
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q=hex2bn(value);
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else if(!strcmp(keyword,"G"))
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g=hex2bn(value);
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else if(!strcmp(keyword,"Seed"))
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{
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int slen = hex2bin(value, seed);
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if (slen != 20)
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{
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fprintf(stderr, "Seed parse length error\n");
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exit (1);
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}
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}
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else if(!strcmp(keyword,"c"))
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counter =atoi(buf+4);
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else if(!strcmp(keyword,"H"))
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{
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h = atoi(value);
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if (!p || !q || !g)
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{
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fprintf(stderr, "Parse Error\n");
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exit (1);
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}
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dsa = FIPS_dsa_new();
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if (!DSA_generate_parameters_ex(dsa, nmod,seed,20 ,&counter2,&h2,NULL))
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{
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do_print_errors();
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exit(1);
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}
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if (BN_cmp(dsa->p, p) || BN_cmp(dsa->q, q) || BN_cmp(dsa->g, g)
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|| (counter != counter2) || (h != h2))
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printf("Result = F\n");
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else
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printf("Result = P\n");
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BN_free(p);
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BN_free(q);
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BN_free(g);
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p = NULL;
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q = NULL;
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g = NULL;
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FIPS_dsa_free(dsa);
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dsa = NULL;
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}
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}
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}
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/* Keypair verification routine. NB: this isn't part of the standard FIPS140-2
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* algorithm tests. It is an additional test to perform sanity checks on the
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* output of the KeyPair test.
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*/
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static int dss_paramcheck(int nmod, BIGNUM *p, BIGNUM *q, BIGNUM *g,
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BN_CTX *ctx)
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{
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BIGNUM *rem = NULL;
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if (BN_num_bits(p) != nmod)
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return 0;
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if (BN_num_bits(q) != 160)
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return 0;
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if (BN_is_prime_ex(p, BN_prime_checks, ctx, NULL) != 1)
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return 0;
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if (BN_is_prime_ex(q, BN_prime_checks, ctx, NULL) != 1)
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return 0;
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rem = BN_new();
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if (!BN_mod(rem, p, q, ctx) || !BN_is_one(rem)
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|| (BN_cmp(g, BN_value_one()) <= 0)
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|| !BN_mod_exp(rem, g, q, p, ctx) || !BN_is_one(rem))
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{
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BN_free(rem);
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return 0;
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}
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/* Todo: check g */
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BN_free(rem);
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return 1;
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}
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static void keyver()
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{
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char buf[1024];
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char lbuf[1024];
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char *keyword, *value;
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BIGNUM *p = NULL, *q = NULL, *g = NULL, *X = NULL, *Y = NULL;
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BIGNUM *Y2;
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BN_CTX *ctx = NULL;
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int nmod=0, paramcheck = 0;
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ctx = BN_CTX_new();
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Y2 = BN_new();
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while(fgets(buf,sizeof buf,stdin) != NULL)
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{
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if (!parse_line(&keyword, &value, lbuf, buf))
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{
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fputs(buf,stdout);
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continue;
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}
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if(!strcmp(keyword,"[mod"))
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{
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if (p)
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BN_free(p);
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p = NULL;
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if (q)
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BN_free(q);
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q = NULL;
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if (g)
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BN_free(g);
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g = NULL;
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paramcheck = 0;
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nmod=atoi(value);
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}
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else if(!strcmp(keyword,"P"))
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p=hex2bn(value);
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else if(!strcmp(keyword,"Q"))
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q=hex2bn(value);
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else if(!strcmp(keyword,"G"))
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g=hex2bn(value);
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else if(!strcmp(keyword,"X"))
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X=hex2bn(value);
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else if(!strcmp(keyword,"Y"))
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{
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Y=hex2bn(value);
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if (!p || !q || !g || !X || !Y)
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{
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fprintf(stderr, "Parse Error\n");
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exit (1);
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}
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pbn("P",p);
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pbn("Q",q);
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pbn("G",g);
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pbn("X",X);
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pbn("Y",Y);
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if (!paramcheck)
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{
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if (dss_paramcheck(nmod, p, q, g, ctx))
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paramcheck = 1;
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else
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paramcheck = -1;
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}
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if (paramcheck != 1)
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printf("Result = F\n");
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else
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{
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if (!BN_mod_exp(Y2, g, X, p, ctx) || BN_cmp(Y2, Y))
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printf("Result = F\n");
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else
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printf("Result = P\n");
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}
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BN_free(X);
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BN_free(Y);
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X = NULL;
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Y = NULL;
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}
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}
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if (p)
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BN_free(p);
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if (q)
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BN_free(q);
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if (g)
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BN_free(g);
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if (Y2)
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BN_free(Y2);
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}
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static void keypair()
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{
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char buf[1024];
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char lbuf[1024];
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char *keyword, *value;
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int nmod=0;
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while(fgets(buf,sizeof buf,stdin) != NULL)
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{
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if (!parse_line(&keyword, &value, lbuf, buf))
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{
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fputs(buf,stdout);
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continue;
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}
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if(!strcmp(keyword,"[mod"))
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nmod=atoi(value);
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else if(!strcmp(keyword,"N"))
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{
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DSA *dsa;
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int n=atoi(value);
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printf("[mod = %d]\n\n",nmod);
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dsa = FIPS_dsa_new();
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if (!DSA_generate_parameters_ex(dsa, nmod,NULL,0,NULL,NULL,NULL))
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{
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do_print_errors();
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exit(1);
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}
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pbn("P",dsa->p);
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pbn("Q",dsa->q);
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pbn("G",dsa->g);
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putc('\n',stdout);
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while(n--)
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{
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if (!DSA_generate_key(dsa))
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{
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do_print_errors();
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exit(1);
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}
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pbn("X",dsa->priv_key);
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pbn("Y",dsa->pub_key);
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putc('\n',stdout);
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}
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}
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}
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}
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static void siggen()
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{
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char buf[1024];
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char lbuf[1024];
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char *keyword, *value;
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int nmod=0;
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DSA *dsa=NULL;
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while(fgets(buf,sizeof buf,stdin) != NULL)
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{
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if (!parse_line(&keyword, &value, lbuf, buf))
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{
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fputs(buf,stdout);
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continue;
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}
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if(!strcmp(keyword,"[mod"))
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{
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nmod=atoi(value);
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printf("[mod = %d]\n\n",nmod);
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if (dsa)
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FIPS_dsa_free(dsa);
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dsa = FIPS_dsa_new();
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if (!DSA_generate_parameters_ex(dsa, nmod,NULL,0,NULL,NULL,NULL))
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{
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do_print_errors();
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exit(1);
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}
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pbn("P",dsa->p);
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pbn("Q",dsa->q);
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pbn("G",dsa->g);
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putc('\n',stdout);
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}
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else if(!strcmp(keyword,"Msg"))
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{
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unsigned char msg[1024];
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unsigned char sbuf[60];
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unsigned int slen;
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int n;
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EVP_PKEY pk;
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EVP_MD_CTX mctx;
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DSA_SIG *sig;
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EVP_MD_CTX_init(&mctx);
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n=hex2bin(value,msg);
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pv("Msg",msg,n);
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if (!DSA_generate_key(dsa))
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{
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do_print_errors();
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exit(1);
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}
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pk.type = EVP_PKEY_DSA;
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pk.pkey.dsa = dsa;
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pbn("Y",dsa->pub_key);
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EVP_SignInit_ex(&mctx, EVP_dss1(), NULL);
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EVP_SignUpdate(&mctx, msg, n);
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EVP_SignFinal(&mctx, sbuf, &slen, &pk);
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sig = DSA_SIG_new();
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FIPS_dsa_sig_decode(sig, sbuf, slen);
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pbn("R",sig->r);
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pbn("S",sig->s);
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putc('\n',stdout);
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DSA_SIG_free(sig);
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EVP_MD_CTX_cleanup(&mctx);
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}
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}
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if (dsa)
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FIPS_dsa_free(dsa);
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}
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static void sigver()
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{
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DSA *dsa=NULL;
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char buf[1024];
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char lbuf[1024];
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unsigned char msg[1024];
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char *keyword, *value;
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int nmod=0, n=0;
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DSA_SIG sg, *sig = &sg;
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sig->r = NULL;
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sig->s = NULL;
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while(fgets(buf,sizeof buf,stdin) != NULL)
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{
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if (!parse_line(&keyword, &value, lbuf, buf))
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{
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fputs(buf,stdout);
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continue;
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}
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if(!strcmp(keyword,"[mod"))
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{
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nmod=atoi(value);
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if(dsa)
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FIPS_dsa_free(dsa);
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dsa=FIPS_dsa_new();
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}
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else if(!strcmp(keyword,"P"))
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dsa->p=hex2bn(value);
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else if(!strcmp(keyword,"Q"))
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dsa->q=hex2bn(value);
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else if(!strcmp(keyword,"G"))
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{
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dsa->g=hex2bn(value);
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printf("[mod = %d]\n\n",nmod);
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pbn("P",dsa->p);
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pbn("Q",dsa->q);
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pbn("G",dsa->g);
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putc('\n',stdout);
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}
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else if(!strcmp(keyword,"Msg"))
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{
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n=hex2bin(value,msg);
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pv("Msg",msg,n);
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}
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else if(!strcmp(keyword,"Y"))
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dsa->pub_key=hex2bn(value);
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else if(!strcmp(keyword,"R"))
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sig->r=hex2bn(value);
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else if(!strcmp(keyword,"S"))
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{
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EVP_MD_CTX mctx;
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EVP_PKEY pk;
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unsigned char sigbuf[60];
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unsigned int slen;
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int r;
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EVP_MD_CTX_init(&mctx);
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pk.type = EVP_PKEY_DSA;
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pk.pkey.dsa = dsa;
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sig->s=hex2bn(value);
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pbn("Y",dsa->pub_key);
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pbn("R",sig->r);
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pbn("S",sig->s);
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slen = FIPS_dsa_sig_encode(sigbuf, sig);
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EVP_VerifyInit_ex(&mctx, EVP_dss1(), NULL);
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EVP_VerifyUpdate(&mctx, msg, n);
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r = EVP_VerifyFinal(&mctx, sigbuf, slen, &pk);
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EVP_MD_CTX_cleanup(&mctx);
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printf("Result = %c\n", r == 1 ? 'P' : 'F');
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putc('\n',stdout);
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}
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}
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}
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int main(int argc,char **argv)
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{
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if(argc != 2)
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{
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fprintf(stderr,"%s [prime|pqg|pqgver|keypair|siggen|sigver]\n",argv[0]);
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exit(1);
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}
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if(!FIPS_mode_set(1))
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{
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do_print_errors();
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exit(1);
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}
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if(!strcmp(argv[1],"prime"))
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primes();
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else if(!strcmp(argv[1],"pqg"))
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pqg();
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else if(!strcmp(argv[1],"pqgver"))
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pqgver();
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else if(!strcmp(argv[1],"keypair"))
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keypair();
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else if(!strcmp(argv[1],"keyver"))
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keyver();
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else if(!strcmp(argv[1],"siggen"))
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siggen();
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else if(!strcmp(argv[1],"sigver"))
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sigver();
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else
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{
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fprintf(stderr,"Don't know how to %s.\n",argv[1]);
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exit(1);
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}
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return 0;
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}
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#endif
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