fips/fips_utl.h

   1 /* ====================================================================
   2  * Copyright (c) 2007 The OpenSSL Project.  All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  *
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  *
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in
  13  *    the documentation and/or other materials provided with the
  14  *    distribution.
  15  *
  16  * 3. All advertising materials mentioning features or use of this
  17  *    software must display the following acknowledgment:
  18  *    "This product includes software developed by the OpenSSL Project
  19  *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  20  *
  21  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  22  *    endorse or promote products derived from this software without
  23  *    prior written permission. For written permission, please contact
  24  *    openssl-core@openssl.org.
  25  *
  26  * 5. Products derived from this software may not be called "OpenSSL"
  27  *    nor may "OpenSSL" appear in their names without prior written
  28  *    permission of the OpenSSL Project.
  29  *
  30  * 6. Redistributions of any form whatsoever must retain the following
  31  *    acknowledgment:
  32  *    "This product includes software developed by the OpenSSL Project
  33  *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  34  *
  35  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  36  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  37  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  38  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  39  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  40  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  41  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  42  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  43  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  44  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  45  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  46  * OF THE POSSIBILITY OF SUCH DAMAGE.
  47  *
  48  */
  49
  50 #define OPENSSL_FIPSAPI
  51 #include <openssl/fips.h>
  52
  53 int hex2bin(const char *in, unsigned char *out);
  54 unsigned char *hex2bin_m(const char *in, long *plen);
  55 int do_hex2bn(BIGNUM **pr, const char *in);
  56 int do_bn_print(FILE *out, BIGNUM *bn);
  57 int do_bn_print_name(FILE *out, const char *name, BIGNUM *bn);
  58 int parse_line(char **pkw, char **pval, char *linebuf, char *olinebuf);
  59 BIGNUM *hex2bn(const char *in);
  60 int bin2hex(const unsigned char *in,int len,char *out);
  61 void pv(const char *tag,const unsigned char *val,int len);
  62 int tidy_line(char *linebuf, char *olinebuf);
  63 int bint2bin(const char *in, int len, unsigned char *out);
  64 int bin2bint(const unsigned char *in,int len,char *out);
  65 void PrintValue(char *tag, unsigned char *val, int len);
  66 void OutputValue(char *tag, unsigned char *val, int len, FILE *rfp,int bitmode);
  67
  68 static int no_err;
  69
  70 static void put_err_cb(int lib, int func,int reason,const char *file,int line)
  71         {
  72                 if (no_err)
  73                         return;
  74                 fprintf(stderr, "ERROR:lib=%d,func=%d,reason=%d"
  75                                 ":file=%s:line=%d\n",
  76                         lib, func, reason, file, line);
  77         }
  78
  79 static void add_err_cb(int num, va_list args)
  80         {
  81         int i;
  82         char *str;
  83         if (no_err)
  84                 return;
  85         fputs("\t", stderr);
  86         for (i = 0; i < num; i++)
  87                 {
  88                 str = va_arg(args, char *);
  89                 if (str)
  90                         fputs(str, stderr);
  91                 }
  92         fputs("\n", stderr);
  93         }
  94
  95 static void fips_set_error_print(void)
  96         {
  97         FIPS_set_error_callbacks(put_err_cb, add_err_cb);
  98         }
  99
 100 int hex2bin(const char *in, unsigned char *out)
 101     {
 102     int n1, n2;
 103     unsigned char ch;
 104
 105     for (n1=0,n2=0 ; in[n1] && in[n1] != '\n' ; )
 106         { /* first byte */
 107         if ((in[n1] >= '0') && (in[n1] <= '9'))
 108             ch = in[n1++] - '0';
 109         else if ((in[n1] >= 'A') && (in[n1] <= 'F'))
 110             ch = in[n1++] - 'A' + 10;
 111         else if ((in[n1] >= 'a') && (in[n1] <= 'f'))
 112             ch = in[n1++] - 'a' + 10;
 113         else
 114             return -1;
 115         if(!in[n1])
 116             {
 117             out[n2++]=ch;
 118             break;
 119             }
 120         out[n2] = ch << 4;
 121         /* second byte */
 122         if ((in[n1] >= '0') && (in[n1] <= '9'))
 123             ch = in[n1++] - '0';
 124         else if ((in[n1] >= 'A') && (in[n1] <= 'F'))
 125             ch = in[n1++] - 'A' + 10;
 126         else if ((in[n1] >= 'a') && (in[n1] <= 'f'))
 127             ch = in[n1++] - 'a' + 10;
 128         else
 129             return -1;
 130         out[n2++] |= ch;
 131         }
 132     return n2;
 133     }
 134
 135 unsigned char *hex2bin_m(const char *in, long *plen)
 136         {
 137         unsigned char *p;
 138         p = OPENSSL_malloc((strlen(in) + 1)/2);
 139         *plen = hex2bin(in, p);
 140         return p;
 141         }
 142
 143 int do_hex2bn(BIGNUM **pr, const char *in)
 144         {
 145         unsigned char *p;
 146         long plen;
 147         int r = 0;
 148         p = hex2bin_m(in, &plen);
 149         if (!p)
 150                 return 0;
 151         if (!*pr)
 152                 *pr = BN_new();
 153         if (!*pr)
 154                 return 0;
 155         if (BN_bin2bn(p, plen, *pr))
 156                 r = 1;
 157         OPENSSL_free(p);
 158         return r;
 159         }
 160
 161 int do_bn_print(FILE *out, BIGNUM *bn)
 162         {
 163         int len, i;
 164         unsigned char *tmp;
 165         len = BN_num_bytes(bn);
 166         if (len == 0)
 167                 {
 168                 fputs("00", out);
 169                 return 1;
 170                 }
 171
 172         tmp = OPENSSL_malloc(len);
 173         if (!tmp)
 174                 {
 175                 fprintf(stderr, "Memory allocation error\n");
 176                 return 0;
 177                 }
 178         BN_bn2bin(bn, tmp);
 179         for (i = 0; i < len; i++)
 180                 fprintf(out, "%02x", tmp[i]);
 181         OPENSSL_free(tmp);
 182         return 1;
 183         }
 184
 185 int do_bn_print_name(FILE *out, const char *name, BIGNUM *bn)
 186         {
 187         int r;
 188         fprintf(out, "%s = ", name);
 189         r = do_bn_print(out, bn);
 190         if (!r)
 191                 return 0;
 192         fputs("\n", out);
 193         return 1;
 194         }
 195
 196 int parse_line(char **pkw, char **pval, char *linebuf, char *olinebuf)
 197         {
 198         char *keyword, *value, *p, *q;
 199         strcpy(linebuf, olinebuf);
 200         keyword = linebuf;
 201         /* Skip leading space */
 202         while (isspace((unsigned char)*keyword))
 203                 keyword++;
 204
 205         /* Look for = sign */
 206         p = strchr(linebuf, '=');
 207
 208         /* If no '=' exit */
 209         if (!p)
 210                 return 0;
 211
 212         q = p - 1;
 213
 214         /* Remove trailing space */
 215         while (isspace((unsigned char)*q))
 216                 *q-- = 0;
 217
 218         *p = 0;
 219         value = p + 1;
 220
 221         /* Remove leading space from value */
 222         while (isspace((unsigned char)*value))
 223                 value++;
 224
 225         /* Remove trailing space from value */
 226         p = value + strlen(value) - 1;
 227
 228         while (*p == '\n' || isspace((unsigned char)*p))
 229                 *p-- = 0;
 230
 231         *pkw = keyword;
 232         *pval = value;
 233         return 1;
 234         }
 235
 236 BIGNUM *hex2bn(const char *in)
 237     {
 238     BIGNUM *p=NULL;
 239
 240     if (!do_hex2bn(&p, in))
 241         return NULL;
 242
 243     return p;
 244     }
 245
 246 int bin2hex(const unsigned char *in,int len,char *out)
 247     {
 248     int n1, n2;
 249     unsigned char ch;
 250
 251     for (n1=0,n2=0 ; n1 < len ; ++n1)
 252         {
 253         ch=in[n1] >> 4;
 254         if (ch <= 0x09)
 255             out[n2++]=ch+'0';
 256         else
 257             out[n2++]=ch-10+'a';
 258         ch=in[n1] & 0x0f;
 259         if(ch <= 0x09)
 260             out[n2++]=ch+'0';
 261         else
 262             out[n2++]=ch-10+'a';
 263         }
 264     out[n2]='\0';
 265     return n2;
 266     }
 267
 268 void pv(const char *tag,const unsigned char *val,int len)
 269     {
 270     char obuf[2048];
 271
 272     bin2hex(val,len,obuf);
 273     printf("%s = %s\n",tag,obuf);
 274     }
 275
 276 /* To avoid extensive changes to test program at this stage just convert
 277  * the input line into an acceptable form. Keyword lines converted to form
 278  * "keyword = value\n" no matter what white space present, all other lines
 279  * just have leading and trailing space removed.
 280  */
 281
 282 int tidy_line(char *linebuf, char *olinebuf)
 283         {
 284         char *keyword, *value, *p, *q;
 285         strcpy(linebuf, olinebuf);
 286         keyword = linebuf;
 287         /* Skip leading space */
 288         while (isspace((unsigned char)*keyword))
 289                 keyword++;
 290         /* Look for = sign */
 291         p = strchr(linebuf, '=');
 292
 293         /* If no '=' just chop leading, trailing ws */
 294         if (!p)
 295                 {
 296                 p = keyword + strlen(keyword) - 1;
 297                 while (*p == '\n' || isspace((unsigned char)*p))
 298                         *p-- = 0;
 299                 strcpy(olinebuf, keyword);
 300                 strcat(olinebuf, "\n");
 301                 return 1;
 302                 }
 303
 304         q = p - 1;
 305
 306         /* Remove trailing space */
 307         while (isspace((unsigned char)*q))
 308                 *q-- = 0;
 309
 310         *p = 0;
 311         value = p + 1;
 312
 313         /* Remove leading space from value */
 314         while (isspace((unsigned char)*value))
 315                 value++;
 316
 317         /* Remove trailing space from value */
 318         p = value + strlen(value) - 1;
 319
 320         while (*p == '\n' || isspace((unsigned char)*p))
 321                 *p-- = 0;
 322
 323         strcpy(olinebuf, keyword);
 324         strcat(olinebuf, " = ");
 325         strcat(olinebuf, value);
 326         strcat(olinebuf, "\n");
 327
 328         return 1;
 329         }
 330
 331 /* NB: this return the number of _bits_ read */
 332 int bint2bin(const char *in, int len, unsigned char *out)
 333     {
 334     int n;
 335
 336     memset(out,0,len);
 337     for(n=0 ; n < len ; ++n)
 338         if(in[n] == '1')
 339             out[n/8]|=(0x80 >> (n%8));
 340     return len;
 341     }
 342
 343 int bin2bint(const unsigned char *in,int len,char *out)
 344     {
 345     int n;
 346
 347     for(n=0 ; n < len ; ++n)
 348         out[n]=(in[n/8]&(0x80 >> (n%8))) ? '1' : '0';
 349     return n;
 350     }
 351
 352 /*-----------------------------------------------*/
 353
 354 void PrintValue(char *tag, unsigned char *val, int len)
 355 {
 356 #if VERBOSE
 357   char obuf[2048];
 358   int olen;
 359   olen = bin2hex(val, len, obuf);
 360   printf("%s = %.*s\n", tag, olen, obuf);
 361 #endif
 362 }
 363
 364 void OutputValue(char *tag, unsigned char *val, int len, FILE *rfp,int bitmode)
 365     {
 366     char obuf[2048];
 367     int olen;
 368
 369     if(bitmode)
 370         olen=bin2bint(val,len,obuf);
 371     else
 372         olen=bin2hex(val,len,obuf);
 373
 374     fprintf(rfp, "%s = %.*s\n", tag, olen, obuf);
 375 #if VERBOSE
 376     printf("%s = %.*s\n", tag, olen, obuf);
 377 #endif
 378     }
 379