if(pubin) rsa=PEM_read_bio_RSAPublicKey(in,NULL,NULL,NULL);
if(pubin) rsa=PEM_read_bio_RSA_PUBKEY(in,NULL,NULL,NULL);
int MAIN(int argc, char **argv)	{	int ret=1;	RSA *rsa=NULL;	int i,badops=0;	const EVP_CIPHER *enc=NULL;	BIO *in=NULL,*out=NULL;	int informat,outformat,text=0,check=0,noout=0;	int pubin = 0, pubout = 0;	char *infile,*outfile,*prog;	char *passin = NULL, *passout = NULL;	int modulus=0;	apps_startup();	if (bio_err == NULL)		if ((bio_err=BIO_new(BIO_s_file())) != NULL)			BIO_set_fp(bio_err,stderr,BIO_NOCLOSE|BIO_FP_TEXT);	infile=NULL;	outfile=NULL;	informat=FORMAT_PEM;	outformat=FORMAT_PEM;	prog=argv[0];	argc--;	argv++;	while (argc >= 1)		{		if 	(strcmp(*argv,"-inform") == 0)			{			if (--argc < 1) goto bad;			informat=str2fmt(*(++argv));			}		else if (strcmp(*argv,"-outform") == 0)			{			if (--argc < 1) goto bad;			outformat=str2fmt(*(++argv));			}		else if (strcmp(*argv,"-in") == 0)			{			if (--argc < 1) goto bad;			infile= *(++argv);			}		else if (strcmp(*argv,"-out") == 0)			{			if (--argc < 1) goto bad;			outfile= *(++argv);			}		else if (strcmp(*argv,"-passin") == 0)			{			if (--argc < 1) goto bad;			passin= *(++argv);			}		else if (strcmp(*argv,"-envpassin") == 0)			{			if (--argc < 1) goto bad;				if(!(passin= getenv(*(++argv))))				{				BIO_printf(bio_err,				 "Can't read environment variable %s\n",								*argv);				badops = 1;				}			}		else if (strcmp(*argv,"-envpassout") == 0)			{			if (--argc < 1) goto bad;				if(!(passout= getenv(*(++argv))))				{				BIO_printf(bio_err,				 "Can't read environment variable %s\n",								*argv);				badops = 1;				}			argv++;			}		else if (strcmp(*argv,"-passout") == 0)			{			if (--argc < 1) goto bad;			passout= *(++argv);			}		else if (strcmp(*argv,"-pubin") == 0)			pubin=1;		else if (strcmp(*argv,"-pubout") == 0)			pubout=1;		else if (strcmp(*argv,"-noout") == 0)			noout=1;		else if (strcmp(*argv,"-text") == 0)			text=1;		else if (strcmp(*argv,"-modulus") == 0)			modulus=1;		else if (strcmp(*argv,"-check") == 0)			check=1;		else if ((enc=EVP_get_cipherbyname(&(argv[0][1]))) == NULL)			{			BIO_printf(bio_err,"unknown option %s\n",*argv);			badops=1;			break;			}		argc--;		argv++;		}	if (badops)		{bad:		BIO_printf(bio_err,"%s [options] <infile >outfile\n",prog);		BIO_printf(bio_err,"where options are\n");		BIO_printf(bio_err," -inform arg     input format - one of DER NET PEM\n");		BIO_printf(bio_err," -outform arg    output format - one of DER NET PEM\n");		BIO_printf(bio_err," -in arg         input file\n");		BIO_printf(bio_err," -passin arg     input file pass phrase\n");		BIO_printf(bio_err," -envpassin arg  environment variable containing input file pass phrase\n");		BIO_printf(bio_err," -in arg         input file\n");		BIO_printf(bio_err," -out arg        output file\n");		BIO_printf(bio_err," -passout arg    input file pass phrase\n");		BIO_printf(bio_err," -envpassout arg environment variable containing input file pass phrase\n");		BIO_printf(bio_err," -des            encrypt PEM output with cbc des\n");		BIO_printf(bio_err," -des3           encrypt PEM output with ede cbc des using 168 bit key\n");#ifndef NO_IDEA		BIO_printf(bio_err," -idea           encrypt PEM output with cbc idea\n");#endif		BIO_printf(bio_err," -text           print the key in text\n");		BIO_printf(bio_err," -noout          don't print key out\n");		BIO_printf(bio_err," -modulus        print the RSA key modulus\n");		BIO_printf(bio_err," -check          verify key consistency\n");		BIO_printf(bio_err," -pubin          expect a public key in input file\n");		BIO_printf(bio_err," -pubout         output a public key\n");		goto end;		}	ERR_load_crypto_strings();	in=BIO_new(BIO_s_file());	out=BIO_new(BIO_s_file());	if ((in == NULL) || (out == NULL))		{		ERR_print_errors(bio_err);		goto end;		}	if (infile == NULL)		BIO_set_fp(in,stdin,BIO_NOCLOSE);	else		{		if (BIO_read_filename(in,infile) <= 0)			{			perror(infile);			goto end;			}		}	BIO_printf(bio_err,"read RSA private key\n");	if	(informat == FORMAT_ASN1) {		if (pubin) rsa=d2i_RSAPublicKey_bio(in,NULL);		else rsa=d2i_RSAPrivateKey_bio(in,NULL);	}#ifndef NO_RC4	else if (informat == FORMAT_NETSCAPE)		{		BUF_MEM *buf=NULL;		unsigned char *p;		int size=0;		buf=BUF_MEM_new();		for (;;)			{			if ((buf == NULL) || (!BUF_MEM_grow(buf,size+1024*10)))				goto end;			i=BIO_read(in,&(buf->data[size]),1024*10);			size+=i;			if (i == 0) break;			if (i < 0)				{				perror("reading private key");				BUF_MEM_free(buf);				goto end;				}			}		p=(unsigned char *)buf->data;		rsa=(RSA *)d2i_Netscape_RSA(NULL,&p,(long)size,NULL);		BUF_MEM_free(buf);		}#endif	else if (informat == FORMAT_PEM) {		if(pubin) rsa=PEM_read_bio_RSAPublicKey(in,NULL,NULL,NULL);		else {			if(passin) rsa=PEM_read_bio_RSAPrivateKey(in,NULL,								key_cb,passin);			else rsa=PEM_read_bio_RSAPrivateKey(in,NULL,NULL,NULL);		}	}	else		{		BIO_printf(bio_err,"bad input format specified for key\n");		goto end;		}	if (rsa == NULL)		{		BIO_printf(bio_err,"unable to load Key\n");		ERR_print_errors(bio_err);		goto end;		}	if (outfile == NULL)		BIO_set_fp(out,stdout,BIO_NOCLOSE);	else		{		if (BIO_write_filename(out,outfile) <= 0)			{			perror(outfile);			goto end;			}		}	if (text) 		if (!RSA_print(out,rsa,0))			{			perror(outfile);			ERR_print_errors(bio_err);			goto end;			}	if (modulus)		{		fprintf(stdout,"Modulus=");		BN_print(out,rsa->n);		fprintf(stdout,"\n");		}	if (check)		{		int r = RSA_check_key(rsa);		if (r == 1)			BIO_printf(out,"RSA key ok\n");		else if (r == 0)			{			long e;			while ((e = ERR_peek_error()) != 0 &&				ERR_GET_LIB(e) == ERR_LIB_RSA &&				ERR_GET_FUNC(e) == RSA_F_RSA_CHECK_KEY &&				ERR_GET_REASON(e) != ERR_R_MALLOC_FAILURE)				{				BIO_printf(out, "RSA key error: %s\n", ERR_reason_error_string(e));				ERR_get_error(); /* remove e from error stack */				}			}				if (r == -1 || ERR_peek_error() != 0) /* should happen only if r == -1 */			{			ERR_print_errors(bio_err);			goto end;			}		}			if (noout)		{		ret = 0;		goto end;		}	BIO_printf(bio_err,"writing RSA key\n");	if 	(outformat == FORMAT_ASN1) {		if(pubout || pubin) i=i2d_RSAPublicKey_bio(out,rsa);		else i=i2d_RSAPrivateKey_bio(out,rsa);	}#ifndef NO_RC4	else if (outformat == FORMAT_NETSCAPE)		{		unsigned char *p,*pp;		int size;		i=1;		size=i2d_Netscape_RSA(rsa,NULL,NULL);		if ((p=(unsigned char *)Malloc(size)) == NULL)			{			BIO_printf(bio_err,"Malloc failure\n");			goto end;			}		pp=p;		i2d_Netscape_RSA(rsa,&p,NULL);		BIO_write(out,(char *)pp,size);		Free(pp);		}#endif	else if (outformat == FORMAT_PEM) {		if(pubout || pubin)		    i=PEM_write_bio_RSAPublicKey(out,rsa);		else {			if(passout) i=PEM_write_bio_RSAPrivateKey(out,rsa,						enc,NULL,0,key_cb,passout);			else i=PEM_write_bio_RSAPrivateKey(out,rsa,enc,NULL,								0,NULL,NULL);		}	} else	{		BIO_printf(bio_err,"bad output format specified for outfile\n");		goto end;		}	if (!i)		{		BIO_printf(bio_err,"unable to write key\n");		ERR_print_errors(bio_err);		}	else		ret=0;end:	if (in != NULL) BIO_free(in);	if (out != NULL) BIO_free(out);	if (rsa != NULL) RSA_free(rsa);	EXIT(ret);	}