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openssl/fips/dsa/fips_dssvs.c
Dr. Stephen Henson 2b4b28dc32 And so it begins... again. 
Initial FIPS 140-2 code ported to HEAD. Doesn't even compile yet, may have
missing files, extraneous files and other nastiness.

In other words: it's experimental ATM, OK?
2011-01-26 00:56:19 +00:00

512 lines
10 KiB
C
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#include <openssl/opensslconf.h>
#ifndef OPENSSL_FIPS
#include <stdio.h>
int main(int argc, char **argv)
{
printf("No FIPS DSA support\n");
return(0);
}
#else
#define OPENSSL_FIPSEVP
#include <openssl/bn.h>
#include <openssl/dsa.h>
#include <openssl/fips.h>
#include <openssl/err.h>
#include <openssl/evp.h>
#include <string.h>
#include <ctype.h>
#include "fips_utl.h"
static void pbn(const char *name, BIGNUM *bn)
{
int len, i;
unsigned char *tmp;
len = BN_num_bytes(bn);
tmp = OPENSSL_malloc(len);
if (!tmp)
{
fprintf(stderr, "Memory allocation error\n");
return;
}
BN_bn2bin(bn, tmp);
printf("%s = ", name);
for (i = 0; i < len; i++)
printf("%02X", tmp[i]);
fputs("\n", stdout);
OPENSSL_free(tmp);
return;
}
static void primes()
{
char buf[10240];
char lbuf[10240];
char *keyword, *value;
while(fgets(buf,sizeof buf,stdin) != NULL)
{
fputs(buf,stdout);
if (!parse_line(&keyword, &value, lbuf, buf))
continue;
if(!strcmp(keyword,"Prime"))
{
BIGNUM *pp;
pp=BN_new();
do_hex2bn(&pp,value);
printf("result= %c\n",
BN_is_prime_ex(pp,20,NULL,NULL) ? 'P' : 'F');
}
}
}
int dsa_builtin_paramgen(DSA *ret, size_t bits, size_t qbits,
const EVP_MD *evpmd, const unsigned char *seed_in, size_t seed_len,
unsigned char *seed_out,
int *counter_ret, unsigned long *h_ret, BN_GENCB *cb);
static void pqg()
{
char buf[1024];
char lbuf[1024];
char *keyword, *value;
int nmod=0;
while(fgets(buf,sizeof buf,stdin) != NULL)
{
if (!parse_line(&keyword, &value, lbuf, buf))
{
fputs(buf,stdout);
continue;
}
if(!strcmp(keyword,"[mod"))
nmod=atoi(value);
else if(!strcmp(keyword,"N"))
{
int n=atoi(value);
printf("[mod = %d]\n\n",nmod);
while(n--)
{
unsigned char seed[EVP_MAX_MD_SIZE];
DSA *dsa;
int counter;
unsigned long h;
dsa = FIPS_dsa_new();
if (!dsa_builtin_paramgen(dsa, nmod, 160, NULL, NULL, 0,
seed,&counter,&h,NULL))
exit(1);
pbn("P",dsa->p);
pbn("Q",dsa->q);
pbn("G",dsa->g);
pv("Seed",seed,20);
printf("c = %d\n",counter);
printf("H = %lx\n",h);
putc('\n',stdout);
}
}
else
fputs(buf,stdout);
}
}
static void pqgver()
{
char buf[1024];
char lbuf[1024];
char *keyword, *value;
BIGNUM *p = NULL, *q = NULL, *g = NULL;
int counter, counter2;
unsigned long h, h2;
DSA *dsa=NULL;
int nmod=0;
unsigned char seed[1024];
while(fgets(buf,sizeof buf,stdin) != NULL)
{
if (!parse_line(&keyword, &value, lbuf, buf))
{
fputs(buf,stdout);
continue;
}
fputs(buf, stdout);
if(!strcmp(keyword,"[mod"))
nmod=atoi(value);
else if(!strcmp(keyword,"P"))
p=hex2bn(value);
else if(!strcmp(keyword,"Q"))
q=hex2bn(value);
else if(!strcmp(keyword,"G"))
g=hex2bn(value);
else if(!strcmp(keyword,"Seed"))
{
int slen = hex2bin(value, seed);
if (slen != 20)
{
fprintf(stderr, "Seed parse length error\n");
exit (1);
}
}
else if(!strcmp(keyword,"c"))
counter =atoi(buf+4);
else if(!strcmp(keyword,"H"))
{
h = atoi(value);
if (!p || !q || !g)
{
fprintf(stderr, "Parse Error\n");
exit (1);
}
dsa = FIPS_dsa_new();
if (!DSA_generate_parameters_ex(dsa, nmod,seed,20 ,&counter2,&h2,NULL))
exit(1);
if (BN_cmp(dsa->p, p) || BN_cmp(dsa->q, q) || BN_cmp(dsa->g, g)
|| (counter != counter2) || (h != h2))
printf("Result = F\n");
else
printf("Result = P\n");
BN_free(p);
BN_free(q);
BN_free(g);
p = NULL;
q = NULL;
g = NULL;
FIPS_dsa_free(dsa);
dsa = NULL;
}
}
}
/* Keypair verification routine. NB: this isn't part of the standard FIPS140-2
* algorithm tests. It is an additional test to perform sanity checks on the
* output of the KeyPair test.
*/
static int dss_paramcheck(int nmod, BIGNUM *p, BIGNUM *q, BIGNUM *g,
BN_CTX *ctx)
{
BIGNUM *rem = NULL;
if (BN_num_bits(p) != nmod)
return 0;
if (BN_num_bits(q) != 160)
return 0;
if (BN_is_prime_ex(p, BN_prime_checks, ctx, NULL) != 1)
return 0;
if (BN_is_prime_ex(q, BN_prime_checks, ctx, NULL) != 1)
return 0;
rem = BN_new();
if (!BN_mod(rem, p, q, ctx) || !BN_is_one(rem)
|| (BN_cmp(g, BN_value_one()) <= 0)
|| !BN_mod_exp(rem, g, q, p, ctx) || !BN_is_one(rem))
{
BN_free(rem);
return 0;
}
/* Todo: check g */
BN_free(rem);
return 1;
}
static void keyver()
{
char buf[1024];
char lbuf[1024];
char *keyword, *value;
BIGNUM *p = NULL, *q = NULL, *g = NULL, *X = NULL, *Y = NULL;
BIGNUM *Y2;
BN_CTX *ctx = NULL;
int nmod=0, paramcheck = 0;
ctx = BN_CTX_new();
Y2 = BN_new();
while(fgets(buf,sizeof buf,stdin) != NULL)
{
if (!parse_line(&keyword, &value, lbuf, buf))
{
fputs(buf,stdout);
continue;
}
if(!strcmp(keyword,"[mod"))
{
if (p)
BN_free(p);
p = NULL;
if (q)
BN_free(q);
q = NULL;
if (g)
BN_free(g);
g = NULL;
paramcheck = 0;
nmod=atoi(value);
}
else if(!strcmp(keyword,"P"))
p=hex2bn(value);
else if(!strcmp(keyword,"Q"))
q=hex2bn(value);
else if(!strcmp(keyword,"G"))
g=hex2bn(value);
else if(!strcmp(keyword,"X"))
X=hex2bn(value);
else if(!strcmp(keyword,"Y"))
{
Y=hex2bn(value);
if (!p || !q || !g || !X || !Y)
{
fprintf(stderr, "Parse Error\n");
exit (1);
}
pbn("P",p);
pbn("Q",q);
pbn("G",g);
pbn("X",X);
pbn("Y",Y);
if (!paramcheck)
{
if (dss_paramcheck(nmod, p, q, g, ctx))
paramcheck = 1;
else
paramcheck = -1;
}
if (paramcheck != 1)
printf("Result = F\n");
else
{
if (!BN_mod_exp(Y2, g, X, p, ctx) || BN_cmp(Y2, Y))
printf("Result = F\n");
else
printf("Result = P\n");
}
BN_free(X);
BN_free(Y);
X = NULL;
Y = NULL;
}
}
if (p)
BN_free(p);
if (q)
BN_free(q);
if (g)
BN_free(g);
if (Y2)
BN_free(Y2);
}
static void keypair()
{
char buf[1024];
char lbuf[1024];
char *keyword, *value;
int nmod=0;
while(fgets(buf,sizeof buf,stdin) != NULL)
{
if (!parse_line(&keyword, &value, lbuf, buf))
{
fputs(buf,stdout);
continue;
}
if(!strcmp(keyword,"[mod"))
nmod=atoi(value);
else if(!strcmp(keyword,"N"))
{
DSA *dsa;
int n=atoi(value);
printf("[mod = %d]\n\n",nmod);
dsa = FIPS_dsa_new();
if (!DSA_generate_parameters_ex(dsa, nmod,NULL,0,NULL,NULL,NULL))
exit(1);
pbn("P",dsa->p);
pbn("Q",dsa->q);
pbn("G",dsa->g);
putc('\n',stdout);
while(n--)
{
if (!DSA_generate_key(dsa))
exit(1);
pbn("X",dsa->priv_key);
pbn("Y",dsa->pub_key);
putc('\n',stdout);
}
}
}
}
static void siggen()
{
char buf[1024];
char lbuf[1024];
char *keyword, *value;
int nmod=0;
DSA *dsa=NULL;
while(fgets(buf,sizeof buf,stdin) != NULL)
{
if (!parse_line(&keyword, &value, lbuf, buf))
{
fputs(buf,stdout);
continue;
}
if(!strcmp(keyword,"[mod"))
{
nmod=atoi(value);
printf("[mod = %d]\n\n",nmod);
if (dsa)
FIPS_dsa_free(dsa);
dsa = FIPS_dsa_new();
if (!DSA_generate_parameters_ex(dsa, nmod,NULL,0,NULL,NULL,NULL))
exit(1);
pbn("P",dsa->p);
pbn("Q",dsa->q);
pbn("G",dsa->g);
putc('\n',stdout);
}
else if(!strcmp(keyword,"Msg"))
{
unsigned char msg[1024];
int n;
EVP_MD_CTX mctx;
DSA_SIG *sig;
EVP_MD_CTX_init(&mctx);
n=hex2bin(value,msg);
pv("Msg",msg,n);
if (!DSA_generate_key(dsa))
exit(1);
pbn("Y",dsa->pub_key);
EVP_DigestInit_ex(&mctx, EVP_sha1(), NULL);
EVP_DigestUpdate(&mctx, msg, n);
sig = FIPS_dsa_sign_ctx(dsa, &mctx);
pbn("R",sig->r);
pbn("S",sig->s);
putc('\n',stdout);
DSA_SIG_free(sig);
EVP_MD_CTX_cleanup(&mctx);
}
}
if (dsa)
FIPS_dsa_free(dsa);
}
static void sigver()
{
DSA *dsa=NULL;
char buf[1024];
char lbuf[1024];
unsigned char msg[1024];
char *keyword, *value;
int nmod=0, n=0;
DSA_SIG sg, *sig = &sg;
sig->r = NULL;
sig->s = NULL;
while(fgets(buf,sizeof buf,stdin) != NULL)
{
if (!parse_line(&keyword, &value, lbuf, buf))
{
fputs(buf,stdout);
continue;
}
if(!strcmp(keyword,"[mod"))
{
nmod=atoi(value);
if(dsa)
FIPS_dsa_free(dsa);
dsa=FIPS_dsa_new();
}
else if(!strcmp(keyword,"P"))
dsa->p=hex2bn(value);
else if(!strcmp(keyword,"Q"))
dsa->q=hex2bn(value);
else if(!strcmp(keyword,"G"))
{
dsa->g=hex2bn(value);
printf("[mod = %d]\n\n",nmod);
pbn("P",dsa->p);
pbn("Q",dsa->q);
pbn("G",dsa->g);
putc('\n',stdout);
}
else if(!strcmp(keyword,"Msg"))
{
n=hex2bin(value,msg);
pv("Msg",msg,n);
}
else if(!strcmp(keyword,"Y"))
dsa->pub_key=hex2bn(value);
else if(!strcmp(keyword,"R"))
sig->r=hex2bn(value);
else if(!strcmp(keyword,"S"))
{
EVP_MD_CTX mctx;
int r;
EVP_MD_CTX_init(&mctx);
sig->s=hex2bn(value);
pbn("Y",dsa->pub_key);
pbn("R",sig->r);
pbn("S",sig->s);
EVP_DigestInit_ex(&mctx, EVP_sha1(), NULL);
EVP_DigestUpdate(&mctx, msg, n);
no_err = 1;
r = FIPS_dsa_verify_ctx(dsa, &mctx, sig);
no_err = 0;
EVP_MD_CTX_cleanup(&mctx);
printf("Result = %c\n", r == 1 ? 'P' : 'F');
putc('\n',stdout);
}
}
}
int main(int argc,char **argv)
{
if(argc != 2)
{
fprintf(stderr,"%s [prime|pqg|pqgver|keypair|siggen|sigver]\n",argv[0]);
exit(1);
}
fips_set_error_print();
if(!FIPS_mode_set(1))
exit(1);
if(!strcmp(argv[1],"prime"))
primes();
else if(!strcmp(argv[1],"pqg"))
pqg();
else if(!strcmp(argv[1],"pqgver"))
pqgver();
else if(!strcmp(argv[1],"keypair"))
keypair();
else if(!strcmp(argv[1],"keyver"))
keyver();
else if(!strcmp(argv[1],"siggen"))
siggen();
else if(!strcmp(argv[1],"sigver"))
sigver();
else
{
fprintf(stderr,"Don't know how to %s.\n",argv[1]);
exit(1);
}
return 0;
}
#endif
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