Cryptographic Components for C
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/* $Id: encdec.c,v 1.6 2004/12/03 02:08:34 sparki Exp $ */
/*
* Copyright (C) 1998-2004 RSA Security Inc.
*
* This file shall only be used to demonstrate how to interface to an
* RSA Security Inc. licensed development product.
*
* You have a royalty-free right to use, reproduce and distribute this
* demonstration file, provided that you agree that RSA Security Inc.
* has no warranty, implied or otherwise, or liability for this
* demonstration file (including any modified version). This software
* is provided "as is" without warranties or representations of any
* kind. RSA Security disclaims all conditions and warranties, statutory
* and otherwise, both express and implied, with respect to the software,
* its quality and performance, including but not limited to, all
* implied warranties of merchantability, fitness for a particular
* purpose, title and noninfringement of third party rights. Without
* limiting the foregoing, RSA Security does not warrant that the
* software is error-free or that errors in the product will be
* corrected. You agree that RSA Security shall not be liable for any
* direct, indirect, incidental, special, consequential, punitive or
* other damages whatsoever resulting from your use of this software
* or any modified version.
*
*
*/
/* This program will convert data between Binary and ASCII. */
#include "bsafe.h"
#include "demoutil.h" /* in samples/common/include */
#include "bsfutil.h" /* in samples/common/include */
#define NUMBER_OF_RANDOM_BYTES 64
#ifdef CRYPTOC_APP
#define MAIN encdecMain
#else
#define MAIN main
#endif
int MAIN(int argc, char *argv[])
{
B_ALGORITHM_OBJ randomAlgorithm = (B_ALGORITHM_OBJ)NULL_PTR;
B_ALGORITHM_OBJ asciiEncoder = (B_ALGORITHM_OBJ)NULL_PTR;
B_ALGORITHM_OBJ asciiDecoder = (B_ALGORITHM_OBJ)NULL_PTR;
unsigned char *binaryData = NULL_PTR;
unsigned int binaryDataLen = NUMBER_OF_RANDOM_BYTES;
unsigned char *asciiEncoding = NULL_PTR;
unsigned int asciiEncodingLen;
unsigned int asciiEncodingLenUpdate;
unsigned int asciiEncodingLenFinal;
unsigned int asciiEncodingLenTotal;
unsigned char *binaryDecoding = NULL_PTR;
unsigned int binaryDecodingLen;
unsigned int binaryDecodingLenUpdate;
unsigned int binaryDecodingLenFinal;
unsigned int binaryDecodingLenTotal;
int status;
do {
/* The RSA_* demo code utilities are described in
common/include/demoutil.h. This procedure simply checks the
command-line arguments for input or output options. */
if ((status = RSA_SetOptions (argc, argv)) != 0)
break;
RSA_PrintMessage ("Encoding-Decoding Algorithm\n");
RSA_PrintMessage ("===========================\n");
RSA_PrintMessage (" First, generate some random bytes to be encoded.\n");
/* Initialize a random algorithm object using a procedure described in
samples/common/include/bsfutil.h */
if ((status = RSA_CreateRandomAlgorithmObject (&randomAlgorithm)) != 0)
break;
binaryData = T_malloc (binaryDataLen);
if (binaryData == NULL_PTR) {
status = RSA_DEMO_E_ALLOC;
break;
}
if ((status = B_GenerateRandomBytes (randomAlgorithm, binaryData,
binaryDataLen,
(A_SURRENDER_CTX *)NULL_PTR)) != 0)
break;
RSA_PrintBuf ("Random Binary Data", binaryData, binaryDataLen);
RSA_PrintMessage ("Now, ASCII-encode the binary data...\n");
/* Create algorithm object */
if ((status = B_CreateAlgorithmObject (&asciiEncoder)) != 0)
break;
/* Set algorithm object to AI_RFC1113Recode */
if ((status = B_SetAlgorithmInfo (asciiEncoder, AI_RFC1113Recode,
NULL_PTR)) != 0)
break;
/* Init */
if ((status = B_EncodeInit (asciiEncoder)) != 0)
break;
/* Update & Final -- Encoding stage */
asciiEncodingLen = binaryDataLen * 2;
asciiEncoding = T_malloc (asciiEncodingLen);
if (asciiEncoding == NULL_PTR) {
status = RSA_DEMO_E_ALLOC;
break;
}
if ((status = B_EncodeUpdate (asciiEncoder, asciiEncoding,
&asciiEncodingLenUpdate, asciiEncodingLen,
binaryData, binaryDataLen)) != 0)
break;
if ((status = B_EncodeFinal
(asciiEncoder, asciiEncoding + asciiEncodingLenUpdate,
&asciiEncodingLenFinal,
asciiEncodingLen - asciiEncodingLenUpdate)) != 0)
break;
asciiEncodingLenTotal = asciiEncodingLenUpdate + asciiEncodingLenFinal;
RSA_PrintMessage ("The ASCII-encoded data:\n");
asciiEncoding[asciiEncodingLenTotal] = 0;
RSA_PrintMessage ("%s\n", asciiEncoding);
RSA_PrintMessage ("\nNow, decode the ASCII-encoded data...\n");
if ((status = B_CreateAlgorithmObject (&asciiDecoder)) != 0)
break;
if ((status = B_SetAlgorithmInfo (asciiDecoder, AI_RFC1113Recode,
NULL_PTR)) != 0)
break;
if ((status = B_DecodeInit (asciiDecoder)) != 0)
break;
binaryDecodingLen = asciiEncodingLenTotal;
binaryDecoding = T_malloc (binaryDecodingLen);
if (binaryDecoding == NULL_PTR) {
status = RSA_DEMO_E_ALLOC;
break;
}
if ((status = B_DecodeUpdate (asciiDecoder, binaryDecoding,
&binaryDecodingLenUpdate, binaryDecodingLen,
asciiEncoding, asciiEncodingLenTotal)) != 0)
break;
if ((status = B_DecodeFinal
(asciiDecoder, binaryDecoding + binaryDecodingLenUpdate,
&binaryDecodingLenFinal,
binaryDecodingLen - binaryDecodingLenUpdate)) != 0)
break;
binaryDecodingLenTotal = binaryDecodingLenUpdate + binaryDecodingLenFinal;
RSA_PrintBuf ("The Binary-decoded data", binaryDecoding,
binaryDecodingLenTotal);
if (binaryDecodingLenTotal != binaryDataLen) {
status = RSA_DEMO_E_INFO_DOES_NOT_VERIFY;
break;
}
if (T_memcmp (binaryData, binaryDecoding, binaryDecodingLenTotal) != 0) {
status = RSA_DEMO_E_INFO_DOES_NOT_VERIFY;
break;
}
RSA_PrintMessage ("The binary-decoded data matches the original ");
RSA_PrintMessage ("binary data.\n");
} while (0);
if (status != 0)
RSA_PrintError ("encdec", status);
/* Destroy */
B_DestroyAlgorithmObject (&randomAlgorithm);
B_DestroyAlgorithmObject (&asciiEncoder);
B_DestroyAlgorithmObject (&asciiDecoder);
/* Free up any memory allocated */
if (binaryData != NULL_PTR)
T_free (binaryData);
if (asciiEncoding != NULL_PTR)
T_free (asciiEncoding);
if (binaryDecoding != NULL_PTR)
T_free (binaryDecoding);
return (status);
} /* end main */