The Tor Browser: security/nss/cmd/makepqg/makepqg.c@141e0f1194b1 (annotated)

security/nss/cmd/makepqg/makepqg.c@141e0f1194b1 (annotated)

security/nss/cmd/makepqg/makepqg.c

Wed, 31 Dec 2014 07:16:47 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 07:16:47 +0100
branch: TOR_BUG_9701
changeset 3: 141e0f1194b1
permissions: -rw-r--r--

Revert simplistic fix pending revisit of Mozilla integration attempt.

 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 #include "prtypes.h"
 #include "prtime.h"
 #include "prlong.h"
 #include "nss.h"
 #include "secutil.h"
 #include "secitem.h"
 #include "pk11func.h"
 #include "pk11pqg.h"
 #if defined(XP_UNIX)
 #include <unistd.h>
 #endif
 #include "plgetopt.h"
 #define BPB 8 /* bits per byte. */
 char  *progName;
 const SEC_ASN1Template seckey_PQGParamsTemplate[] = {
     { SEC_ASN1_SEQUENCE, 0, NULL, sizeof(SECKEYPQGParams) },
     { SEC_ASN1_INTEGER, offsetof(SECKEYPQGParams,prime) },
     { SEC_ASN1_INTEGER, offsetof(SECKEYPQGParams,subPrime) },
     { SEC_ASN1_INTEGER, offsetof(SECKEYPQGParams,base) },
     { 0, }
 };
 void
 Usage(void)
 {
     fprintf(stderr, "Usage:  %s\n", progName);
     fprintf(stderr,
 "-a   Output DER-encoded PQG params, BTOA encoded.\n"
 "-b   Output DER-encoded PQG params in binary\n"
 "-r   Output P, Q and G in ASCII hexadecimal. \n"
 "  -l prime-length       Length of prime in bits (1024 is default)\n"
 "  -n subprime-length    Length of subprime in bits\n"
 "  -o file               Output to this file (default is stdout)\n"
 "  -g bits               Generate SEED this many bits long.\n"
 );
     exit(-1);
 }
 SECStatus
 outputPQGParams(PQGParams * pqgParams, PRBool output_binary, PRBool output_raw,
                 FILE * outFile)
 {
     PLArenaPool   * arena 		= NULL;
     char          * PQG;
     SECItem       * pItem;
     int             cc;
     SECStatus       rv;
     SECItem         encodedParams;
     if (output_raw) {
     	SECItem item;
 	rv = PK11_PQG_GetPrimeFromParams(pqgParams, &item);
 	if (rv) {
 	    SECU_PrintError(progName, "PK11_PQG_GetPrimeFromParams");
 	    return rv;
 	}
 	SECU_PrintInteger(outFile, &item,    "Prime",    1);
 	SECITEM_FreeItem(&item, PR_FALSE);
 	rv = PK11_PQG_GetSubPrimeFromParams(pqgParams, &item);
 	if (rv) {
 	    SECU_PrintError(progName, "PK11_PQG_GetPrimeFromParams");
 	    return rv;
 	}
 	SECU_PrintInteger(outFile, &item, "Subprime", 1);
 	SECITEM_FreeItem(&item, PR_FALSE);
 	rv = PK11_PQG_GetBaseFromParams(pqgParams, &item);
 	if (rv) {
 	    SECU_PrintError(progName, "PK11_PQG_GetPrimeFromParams");
 	    return rv;
 	}
 	SECU_PrintInteger(outFile, &item,     "Base",     1);
 	SECITEM_FreeItem(&item, PR_FALSE);
 	fprintf(outFile, "\n");
 	return SECSuccess;
     }
     encodedParams.data = NULL;
     encodedParams.len  = 0;
     arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
     if (!arena) {
     	SECU_PrintError(progName, "PORT_NewArena");
 	return SECFailure;
     }
     pItem = SEC_ASN1EncodeItem(arena, &encodedParams, pqgParams,
 			       seckey_PQGParamsTemplate);
     if (!pItem) {
     	SECU_PrintError(progName, "SEC_ASN1EncodeItem");
 	PORT_FreeArena(arena, PR_FALSE);
     	return SECFailure;
     }
     if (output_binary) {
 	size_t len;
 	len = fwrite(encodedParams.data, 1, encodedParams.len, outFile);
 	PORT_FreeArena(arena, PR_FALSE);
 	if (len != encodedParams.len) {
 	     fprintf(stderr, "%s: fwrite failed\n", progName);
 	     return SECFailure;
 	}
 	return SECSuccess;
     }
     /* must be output ASCII */
     PQG = BTOA_DataToAscii(encodedParams.data, encodedParams.len);
     PORT_FreeArena(arena, PR_FALSE);
     if (!PQG) {
     	SECU_PrintError(progName, "BTOA_DataToAscii");
 	return SECFailure;
     }
     cc = fprintf(outFile,"%s\n",PQG);
     PORT_Free(PQG);
     if (cc <= 0) {
 	 fprintf(stderr, "%s: fprintf failed\n", progName);
 	 return SECFailure;
     }
     return SECSuccess;
 }
 SECStatus
 outputPQGVerify(PQGVerify * pqgVerify, PRBool output_binary, PRBool output_raw,
                 FILE * outFile)
 {
     SECStatus rv = SECSuccess;
     if (output_raw) {
     	SECItem item;
 	unsigned int counter;
 	rv = PK11_PQG_GetHFromVerify(pqgVerify, &item);
 	if (rv) {
 	    SECU_PrintError(progName, "PK11_PQG_GetHFromVerify");
 	    return rv;
 	}
 	SECU_PrintInteger(outFile, &item,        "h",        1);
 	SECITEM_FreeItem(&item, PR_FALSE);
 	rv = PK11_PQG_GetSeedFromVerify(pqgVerify, &item);
 	if (rv) {
 	    SECU_PrintError(progName, "PK11_PQG_GetSeedFromVerify");
 	    return rv;
 	}
 	SECU_PrintInteger(outFile, &item,     "SEED",     1);
 	fprintf(outFile, "    g:       %d\n", item.len * BPB);
 	SECITEM_FreeItem(&item, PR_FALSE);
 	counter = PK11_PQG_GetCounterFromVerify(pqgVerify);
 	fprintf(outFile, "    counter: %d\n", counter);
 	fprintf(outFile, "\n");
     }
     return rv;
 }
 int
 main(int argc, char **argv)
 {
     FILE          * outFile 		= NULL;
     char          * outFileName         = NULL;
     PQGParams     * pqgParams 		= NULL;
     PQGVerify     * pqgVerify           = NULL;
     int             keySizeInBits	= 1024;
     int             j                   = 8;
     int             g                   = 0;
     int             gMax                = 0;
     int             qSizeInBits         = 0;
     SECStatus       rv 			= 0;
     SECStatus       passed 		= 0;
     PRBool          output_ascii	= PR_FALSE;
     PRBool          output_binary	= PR_FALSE;
     PRBool          output_raw		= PR_FALSE;
     PLOptState *optstate;
     PLOptStatus status;
     progName = strrchr(argv[0], '/');
     if (!progName)
 	progName = strrchr(argv[0], '\\');
     progName = progName ? progName+1 : argv[0];
     /* Parse command line arguments */
     optstate = PL_CreateOptState(argc, argv, "?abg:l:n:o:r" );
     while ((status = PL_GetNextOpt(optstate)) == PL_OPT_OK) {
 	switch (optstate->option) {
 	  case 'l':
 	    keySizeInBits = atoi(optstate->value);
 	    break;
 	  case 'n':
 	    qSizeInBits = atoi(optstate->value);
 	    break;
 	  case 'a':
 	    output_ascii = PR_TRUE;
 	    break;
 	  case 'b':
 	    output_binary = PR_TRUE;
 	    break;
 	  case 'r':
 	    output_raw = PR_TRUE;
 	    break;
 	  case 'o':
 	    if (outFileName) {
 	    	PORT_Free(outFileName);
 	    }
 	    outFileName = PORT_Strdup(optstate->value);
 	    if (!outFileName) {
 		rv = -1;
 	    }
 	    break;
 	  case 'g':
 	    g = atoi(optstate->value);
 	    break;
 	  default:
 	  case '?':
 	    Usage();
 	    break;
 	}
     }
     PL_DestroyOptState(optstate);
     if (status == PL_OPT_BAD) {
         Usage();
     }
     /* exactly 1 of these options must be set. */
     if (1 != ((output_ascii  != PR_FALSE) +
 	      (output_binary != PR_FALSE) +
 	      (output_raw    != PR_FALSE))) {
 	Usage();
     }
     gMax = 2*keySizeInBits;
     if (keySizeInBits < 1024) {
 	j = PQG_PBITS_TO_INDEX(keySizeInBits);
 	if (j < 0) {
 	    fprintf(stderr, "%s: Illegal prime length, \n"
 			    "\tacceptable values are between 512 and 1024,\n"
 			    "\tand divisible by 64, or 2048 or 3072\n",
 			    progName);
 	    return 2;
 	}
 	gMax =2048;
 	if ((qSizeInBits != 0) && (qSizeInBits != 160)) {
 	    fprintf(stderr, "%s: Illegal subprime length, \n"
 			    "\tonly 160 is acceptible for primes <= 1024\n",
 			    progName);
 	    return 2;
 	}
 	/* this forces keysizes less than 1024 into the DSA1 generation
 	 * code. Whether 1024 uses DSA2 or not is triggered by qSizeInBits
 	 * being non-zero. All larger keysizes will use DSA2.
 	 */
 	qSizeInBits = 0;
     }
     if (g != 0 && (g < 160 || g >= gMax || g % 8 != 0)) {
 	fprintf(stderr, "%s: Illegal g bits, \n"
 			"\tacceptable values are between 160 and %d,\n"
 			"\tand divisible by 8\n", progName, gMax);
 	return 3;
     }
     if (!rv && outFileName) {
 	outFile = fopen(outFileName, output_binary ? "wb" : "w");
 	if (!outFile) {
 	    fprintf(stderr, "%s: unable to open \"%s\" for writing\n",
 		    progName, outFileName);
 	    rv = -1;
 	}
     }
     if (outFileName) {
 	PORT_Free(outFileName);
     }
     if (rv != 0) {
 	return 1;
     }
     if (outFile == NULL) {
 	outFile = stdout;
     }
     NSS_NoDB_Init(NULL);
     if (keySizeInBits > 1024 || qSizeInBits != 0) {
 	rv = PK11_PQG_ParamGenV2((unsigned)keySizeInBits,
 	   (unsigned) qSizeInBits, (unsigned)(g/8), &pqgParams, &pqgVerify);
     } else if (g) {
 	rv = PK11_PQG_ParamGenSeedLen((unsigned)j, (unsigned)(g/8),
 	                         &pqgParams, &pqgVerify);
     } else  {
 	rv = PK11_PQG_ParamGen((unsigned)j, &pqgParams, &pqgVerify);
     }
     /* below here, must go to loser */
     if (rv != SECSuccess || pqgParams == NULL || pqgVerify == NULL) {
 	SECU_PrintError(progName, "PQG parameter generation failed.\n");
 	goto loser;
     }
     fprintf(stderr, "%s: PQG parameter generation completed.\n", progName);
     rv = outputPQGParams(pqgParams, output_binary, output_raw, outFile);
     if (rv) {
     	fprintf(stderr, "%s: failed to output PQG params.\n", progName);
 	goto loser;
     }
     rv = outputPQGVerify(pqgVerify, output_binary, output_raw, outFile);
     if (rv) {
     	fprintf(stderr, "%s: failed to output PQG Verify.\n", progName);
 	goto loser;
     }
     rv = PK11_PQG_VerifyParams(pqgParams, pqgVerify, &passed);
     if (rv != SECSuccess) {
 	fprintf(stderr, "%s: PQG parameter verification aborted.\n", progName);
 	goto loser;
     }
     if (passed != SECSuccess) {
 	fprintf(stderr, "%s: PQG parameters failed verification.\n", progName);
 	goto loser;
     }
     fprintf(stderr, "%s: PQG parameters passed verification.\n", progName);
     PK11_PQG_DestroyParams(pqgParams);
     PK11_PQG_DestroyVerify(pqgVerify);
     return 0;
 loser:
     PK11_PQG_DestroyParams(pqgParams);
     PK11_PQG_DestroyVerify(pqgVerify);
     return 1;
 }

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security/nss/cmd/makepqg/makepqg.c@141e0f1194b1 (annotated)

security/nss/cmd/makepqg/makepqg.c