[thirdparty/openssl.git] / crypto / pem / pem_lib.c

/* crypto/pem/pem_lib.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 * 
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 * 
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from 
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 * 
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * 
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */

#include <stdio.h>
#include "cryptlib.h"
#include <openssl/buffer.h>
#include <openssl/objects.h>
#include <openssl/evp.h>
#include <openssl/rand.h>
#include <openssl/x509.h>
#include <openssl/pem.h>
#ifndef NO_DES
#include <openssl/des.h>
#endif

const char *PEM_version="PEM" OPENSSL_VERSION_PTEXT;

#define MIN_LENGTH	4

/* PEMerr(PEM_F_PEM_WRITE_BIO,ERR_R_MALLOC_FAILURE);
 * PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE);
 */

#ifndef NOPROTO
static int def_callback(char *buf, int num, int w);
static int load_iv(unsigned char **fromp,unsigned char *to, int num);
#else
static int def_callback();
static int load_iv();
#endif

static int def_callback(char *buf, int num, int w)
	{
#ifdef NO_FP_API
	/* We should not ever call the default callback routine from
	 * windows. */
	PEMerr(PEM_F_DEF_CALLBACK,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
	return(-1);
#else
	int i,j;
	const char *prompt;

	prompt=EVP_get_pw_prompt();
	if (prompt == NULL)
		prompt="Enter PEM pass phrase:";

	for (;;)
		{
		i=EVP_read_pw_string(buf,num,prompt,w);
		if (i != 0)
			{
			PEMerr(PEM_F_DEF_CALLBACK,PEM_R_PROBLEMS_GETTING_PASSWORD);
			memset(buf,0,(unsigned int)num);
			return(-1);
			}
		j=strlen(buf);
		if (j < MIN_LENGTH)
			{
			fprintf(stderr,"phrase is too short, needs to be at least %d chars\n",MIN_LENGTH);
			}
		else
			break;
		}
	return(j);
#endif
	}

void PEM_proc_type(char *buf, int type)
	{
	const char *str;

	if (type == PEM_TYPE_ENCRYPTED)
		str="ENCRYPTED";
	else if (type == PEM_TYPE_MIC_CLEAR)
		str="MIC-CLEAR";
	else if (type == PEM_TYPE_MIC_ONLY)
		str="MIC-ONLY";
	else
		str="BAD-TYPE";
		
	strcat(buf,"Proc-Type: 4,");
	strcat(buf,str);
	strcat(buf,"\n");
	}

void PEM_dek_info(char *buf, const char *type, int len, char *str)
	{
	static unsigned char map[17]="0123456789ABCDEF";
	long i;
	int j;

	strcat(buf,"DEK-Info: ");
	strcat(buf,type);
	strcat(buf,",");
	j=strlen(buf);
	for (i=0; i<len; i++)
		{
		buf[j+i*2]  =map[(str[i]>>4)&0x0f];
		buf[j+i*2+1]=map[(str[i]   )&0x0f];
		}
	buf[j+i*2]='\n';
	buf[j+i*2+1]='\0';
	}

#ifndef NO_FP_API
char *PEM_ASN1_read(char *(*d2i)(), const char *name, FILE *fp, char **x,
	     int (*cb)())
	{
        BIO *b;
        char *ret;

        if ((b=BIO_new(BIO_s_file())) == NULL)
		{
		PEMerr(PEM_F_PEM_ASN1_READ,ERR_R_BUF_LIB);
                return(0);
		}
        BIO_set_fp(b,fp,BIO_NOCLOSE);
        ret=PEM_ASN1_read_bio(d2i,name,b,x,cb);
        BIO_free(b);
        return(ret);
	}
#endif

char *PEM_ASN1_read_bio(char *(*d2i)(), const char *name, BIO *bp, char **x,
	     int (*cb)())
	{
	EVP_CIPHER_INFO cipher;
	char *nm=NULL,*header=NULL;
	unsigned char *p=NULL,*data=NULL;
	long len;
	char *ret=NULL;

	for (;;)
		{
		if (!PEM_read_bio(bp,&nm,&header,&data,&len)) return(NULL);
		if (	(strcmp(nm,name) == 0) ||
			((strcmp(nm,PEM_STRING_RSA) == 0) &&
			 (strcmp(name,PEM_STRING_EVP_PKEY) == 0)) ||
			((strcmp(nm,PEM_STRING_DSA) == 0) &&
			 (strcmp(name,PEM_STRING_EVP_PKEY) == 0)) ||
			((strcmp(nm,PEM_STRING_X509_OLD) == 0) &&
			 (strcmp(name,PEM_STRING_X509) == 0)) ||
			((strcmp(nm,PEM_STRING_X509_REQ_OLD) == 0) &&
			 (strcmp(name,PEM_STRING_X509_REQ) == 0))
			)
			break;
		Free(nm);
		Free(header);
		Free(data);
		}
	if (!PEM_get_EVP_CIPHER_INFO(header,&cipher)) goto err;
	if (!PEM_do_header(&cipher,data,&len,cb)) goto err;
	p=data;
	if (strcmp(name,PEM_STRING_EVP_PKEY) == 0)
		{
		if (strcmp(nm,PEM_STRING_RSA) == 0)
			ret=d2i(EVP_PKEY_RSA,x,&p,len);
		else if (strcmp(nm,PEM_STRING_DSA) == 0)
			ret=d2i(EVP_PKEY_DSA,x,&p,len);
		}
	else	
		ret=d2i(x,&p,len);
	if (ret == NULL)
		PEMerr(PEM_F_PEM_ASN1_READ_BIO,ERR_R_ASN1_LIB);
err:
	Free(nm);
	Free(header);
	Free(data);
	return(ret);
	}

#ifndef NO_FP_API
int PEM_ASN1_write(int (*i2d)(), const char *name, FILE *fp, char *x,
	     const EVP_CIPHER *enc, unsigned char *kstr, int klen,
	     int (*callback)())
        {
        BIO *b;
        int ret;

        if ((b=BIO_new(BIO_s_file())) == NULL)
		{
		PEMerr(PEM_F_PEM_ASN1_WRITE,ERR_R_BUF_LIB);
                return(0);
		}
        BIO_set_fp(b,fp,BIO_NOCLOSE);
        ret=PEM_ASN1_write_bio(i2d,name,b,x,enc,kstr,klen,callback);
        BIO_free(b);
        return(ret);
        }
#endif

int PEM_ASN1_write_bio(int (*i2d)(), const char *name, BIO *bp, char *x,
	     const EVP_CIPHER *enc, unsigned char *kstr, int klen,
	     int (*callback)())
	{
	EVP_CIPHER_CTX ctx;
	int dsize=0,i,j,ret=0;
	unsigned char *p,*data=NULL;
	const char *objstr=NULL;
#define PEM_BUFSIZE	1024
	char buf[PEM_BUFSIZE];
	unsigned char key[EVP_MAX_KEY_LENGTH];
	unsigned char iv[EVP_MAX_IV_LENGTH];
	
	if (enc != NULL)
		{
		objstr=OBJ_nid2sn(EVP_CIPHER_nid(enc));
		if (objstr == NULL)
			{
			PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,PEM_R_UNSUPPORTED_CIPHER);
			goto err;
			}
		}

	if ((dsize=i2d(x,NULL)) < 0)
		{
		PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,ERR_R_MALLOC_FAILURE);
		dsize=0;
		goto err;
		}
	/* dzise + 8 bytes are needed */
	data=(unsigned char *)Malloc((unsigned int)dsize+20);
	if (data == NULL)
		{
		PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,ERR_R_MALLOC_FAILURE);
		goto err;
		}
	p=data;
	i=i2d(x,&p);

	if (enc != NULL)
		{
		if (kstr == NULL)
			{
			if (callback == NULL)
				klen=def_callback(buf,PEM_BUFSIZE,1);
			else
				klen=(*callback)(buf,PEM_BUFSIZE,1);
			if (klen <= 0)
				{
				PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,PEM_R_READ_KEY);
				goto err;
				}
			kstr=(unsigned char *)buf;
			}
		RAND_seed(data,i);/* put in the RSA key. */
		RAND_bytes(iv,8);	/* Generate a salt */
		/* The 'iv' is used as the iv and as a salt.  It is
		 * NOT taken from the BytesToKey function */
		EVP_BytesToKey(enc,EVP_md5(),iv,kstr,klen,1,key,NULL);

		if (kstr == (unsigned char *)buf) memset(buf,0,PEM_BUFSIZE);

		buf[0]='\0';
		PEM_proc_type(buf,PEM_TYPE_ENCRYPTED);
		PEM_dek_info(buf,objstr,8,(char *)iv);
		/* k=strlen(buf); */
	
		EVP_EncryptInit(&ctx,enc,key,iv);
		EVP_EncryptUpdate(&ctx,data,&j,data,i);
		EVP_EncryptFinal(&ctx,&(data[j]),&i);
		i+=j;
		ret=1;
		}
	else
		{
		ret=1;
		buf[0]='\0';
		}
	i=PEM_write_bio(bp,name,buf,data,i);
	if (i <= 0) ret=0;
err:
	memset(key,0,sizeof(key));
	memset(iv,0,sizeof(iv));
	memset((char *)&ctx,0,sizeof(ctx));
	memset(buf,0,PEM_BUFSIZE);
	memset(data,0,(unsigned int)dsize);
	Free(data);
	return(ret);
	}

int PEM_do_header(EVP_CIPHER_INFO *cipher, unsigned char *data, long *plen,
	     int (*callback)())
	{
	int i,j,o,klen;
	long len;
	EVP_CIPHER_CTX ctx;
	unsigned char key[EVP_MAX_KEY_LENGTH];
	char buf[PEM_BUFSIZE];

	len= *plen;

	if (cipher->cipher == NULL) return(1);
	if (callback == NULL)
		klen=def_callback(buf,PEM_BUFSIZE,0);
	else
		klen=callback(buf,PEM_BUFSIZE,0);
	if (klen <= 0)
		{
		PEMerr(PEM_F_PEM_DO_HEADER,PEM_R_BAD_PASSWORD_READ);
		return(0);
		}
	EVP_BytesToKey(cipher->cipher,EVP_md5(),&(cipher->iv[0]),
		(unsigned char *)buf,klen,1,key,NULL);

	j=(int)len;
	EVP_DecryptInit(&ctx,cipher->cipher,key,&(cipher->iv[0]));
	EVP_DecryptUpdate(&ctx,data,&i,data,j);
	o=EVP_DecryptFinal(&ctx,&(data[i]),&j);
	EVP_CIPHER_CTX_cleanup(&ctx);
	memset((char *)buf,0,sizeof(buf));
	memset((char *)key,0,sizeof(key));
	j+=i;
	if (!o)
		{
		PEMerr(PEM_F_PEM_DO_HEADER,PEM_R_BAD_DECRYPT);
		return(0);
		}
	*plen=j;
	return(1);
	}

int PEM_get_EVP_CIPHER_INFO(char *header, EVP_CIPHER_INFO *cipher)
	{
	int o;
	const EVP_CIPHER *enc=NULL;
	char *p,c;

	cipher->cipher=NULL;
	if ((header == NULL) || (*header == '\0') || (*header == '\n'))
		return(1);
	if (strncmp(header,"Proc-Type: ",11) != 0)
		{ PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_NOT_PROC_TYPE); return(0); }
	header+=11;
	if (*header != '4') return(0); header++;
	if (*header != ',') return(0); header++;
	if (strncmp(header,"ENCRYPTED",9) != 0)
		{ PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_NOT_ENCRYPTED); return(0); }
	for (; (*header != '\n') && (*header != '\0'); header++)
		;
	if (*header == '\0')
		{ PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_SHORT_HEADER); return(0); }
	header++;
	if (strncmp(header,"DEK-Info: ",10) != 0)
		{ PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_NOT_DEK_INFO); return(0); }
	header+=10;

	p=header;
	for (;;)
		{
		c= *header;
		if (!(	((c >= 'A') && (c <= 'Z')) || (c == '-') ||
			((c >= '0') && (c <= '9'))))
			break;
		header++;
		}
	*header='\0';
	o=OBJ_sn2nid(p);
	cipher->cipher=enc=EVP_get_cipherbyname(p);
	*header=c;
	header++;

	if (enc == NULL)
		{
		PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_UNSUPPORTED_ENCRYPTION);
		return(0);
		}
	if (!load_iv((unsigned char **)&header,&(cipher->iv[0]),8)) return(0);

	return(1);
	}

static int load_iv(unsigned char **fromp, unsigned char *to, int num)
	{
	int v,i;
	unsigned char *from;

	from= *fromp;
	for (i=0; i<num; i++) to[i]=0;
	num*=2;
	for (i=0; i<num; i++)
		{
		if ((*from >= '0') && (*from <= '9'))
			v= *from-'0';
		else if ((*from >= 'A') && (*from <= 'F'))
			v= *from-'A'+10;
		else if ((*from >= 'a') && (*from <= 'f'))
			v= *from-'a'+10;
		else
			{
			PEMerr(PEM_F_LOAD_IV,PEM_R_BAD_IV_CHARS);
			return(0);
			}
		from++;
		to[i/2]|=v<<(long)((!(i&1))*4);
		}

	*fromp=from;
	return(1);
	}

#ifndef NO_FP_API
int PEM_write(FILE *fp, char *name, char *header, unsigned char *data,
	     long len)
        {
        BIO *b;
        int ret;

        if ((b=BIO_new(BIO_s_file())) == NULL)
		{
		PEMerr(PEM_F_PEM_WRITE,ERR_R_BUF_LIB);
                return(0);
		}
        BIO_set_fp(b,fp,BIO_NOCLOSE);
        ret=PEM_write_bio(b, name, header, data,len);
        BIO_free(b);
        return(ret);
        }
#endif

int PEM_write_bio(BIO *bp, const char *name, char *header, unsigned char *data,
	     long len)
	{
	int nlen,n,i,j,outl;
	unsigned char *buf;
	EVP_ENCODE_CTX ctx;
	int reason=ERR_R_BUF_LIB;
	
	EVP_EncodeInit(&ctx);
	nlen=strlen(name);

	if (	(BIO_write(bp,"-----BEGIN ",11) != 11) ||
		(BIO_write(bp,name,nlen) != nlen) ||
		(BIO_write(bp,"-----\n",6) != 6))
		goto err;
		
	i=strlen(header);
	if (i > 0)
		{
		if (	(BIO_write(bp,header,i) != i) ||
			(BIO_write(bp,"\n",1) != 1))
			goto err;
		}

	buf=(unsigned char *)Malloc(PEM_BUFSIZE*8);
	if (buf == NULL)
		{
		reason=ERR_R_MALLOC_FAILURE;
		goto err;
		}

	i=j=0;
	while (len > 0)
		{
		n=(int)((len>(PEM_BUFSIZE*5))?(PEM_BUFSIZE*5):len);
		EVP_EncodeUpdate(&ctx,buf,&outl,&(data[j]),n);
		if ((outl) && (BIO_write(bp,(char *)buf,outl) != outl))
			goto err;
		i+=outl;
		len-=n;
		j+=n;
		}
	EVP_EncodeFinal(&ctx,buf,&outl);
	if ((outl > 0) && (BIO_write(bp,(char *)buf,outl) != outl)) goto err;
	Free(buf);
	if (	(BIO_write(bp,"-----END ",9) != 9) ||
		(BIO_write(bp,name,nlen) != nlen) ||
		(BIO_write(bp,"-----\n",6) != 6))
		goto err;
	return(i+outl);
err:
	PEMerr(PEM_F_PEM_WRITE_BIO,reason);
	return(0);
	}

#ifndef NO_FP_API
int PEM_read(FILE *fp, char **name, char **header, unsigned char **data,
	     long *len)
        {
        BIO *b;
        int ret;

        if ((b=BIO_new(BIO_s_file())) == NULL)
		{
		PEMerr(PEM_F_PEM_READ,ERR_R_BUF_LIB);
                return(0);
		}
        BIO_set_fp(b,fp,BIO_NOCLOSE);
        ret=PEM_read_bio(b, name, header, data,len);
        BIO_free(b);
        return(ret);
        }
#endif

int PEM_read_bio(BIO *bp, char **name, char **header, unsigned char **data,
	     long *len)
	{
	EVP_ENCODE_CTX ctx;
	int end=0,i,k,bl=0,hl=0,nohead=0;
	char buf[256];
	BUF_MEM *nameB;
	BUF_MEM *headerB;
	BUF_MEM *dataB,*tmpB;
	
	nameB=BUF_MEM_new();
	headerB=BUF_MEM_new();
	dataB=BUF_MEM_new();
	if ((nameB == NULL) || (headerB == NULL) || (dataB == NULL))
		{
		PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE);
		return(0);
		}

	buf[254]='\0';
	for (;;)
		{
		i=BIO_gets(bp,buf,254);

		if (i <= 0)
			{
			PEMerr(PEM_F_PEM_READ_BIO,PEM_R_NO_START_LINE);
			goto err;
			}

		while ((i >= 0) && (buf[i] <= ' ')) i--;
		buf[++i]='\n'; buf[++i]='\0';

		if (strncmp(buf,"-----BEGIN ",11) == 0)
			{
			i=strlen(&(buf[11]));

			if (strncmp(&(buf[11+i-6]),"-----\n",6) != 0)
				continue;
			if (!BUF_MEM_grow(nameB,i+9))
				{
				PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE);
				goto err;
				}
			memcpy(nameB->data,&(buf[11]),i-6);
			nameB->data[i-6]='\0';
			break;
			}
		}
	hl=0;
	if (!BUF_MEM_grow(headerB,256))
		{ PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); goto err; }
	headerB->data[0]='\0';
	for (;;)
		{
		i=BIO_gets(bp,buf,254);
		if (i <= 0) break;

		while ((i >= 0) && (buf[i] <= ' ')) i--;
		buf[++i]='\n'; buf[++i]='\0';

		if (buf[0] == '\n') break;
		if (!BUF_MEM_grow(headerB,hl+i+9))
			{ PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); goto err; }
		if (strncmp(buf,"-----END ",9) == 0)
			{
			nohead=1;
			break;
			}
		memcpy(&(headerB->data[hl]),buf,i);
		headerB->data[hl+i]='\0';
		hl+=i;
		}

	bl=0;
	if (!BUF_MEM_grow(dataB,1024))
		{ PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); goto err; }
	dataB->data[0]='\0';
	if (!nohead)
		{
		for (;;)
			{
			i=BIO_gets(bp,buf,254);
			if (i <= 0) break;

			while ((i >= 0) && (buf[i] <= ' ')) i--;
			buf[++i]='\n'; buf[++i]='\0';

			if (i != 65) end=1;
			if (strncmp(buf,"-----END ",9) == 0)
				break;
			if (i > 65) break;
			if (!BUF_MEM_grow(dataB,i+bl+9))
				{
				PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE);
				goto err;
				}
			memcpy(&(dataB->data[bl]),buf,i);
			dataB->data[bl+i]='\0';
			bl+=i;
			if (end)
				{
				buf[0]='\0';
				i=BIO_gets(bp,buf,254);
				if (i <= 0) break;

				while ((i >= 0) && (buf[i] <= ' ')) i--;
				buf[++i]='\n'; buf[++i]='\0';

				break;
				}
			}
		}
	else
		{
		tmpB=headerB;
		headerB=dataB;
		dataB=tmpB;
		bl=hl;
		}
	i=strlen(nameB->data);
	if (	(strncmp(buf,"-----END ",9) != 0) ||
		(strncmp(nameB->data,&(buf[9]),i) != 0) ||
		(strncmp(&(buf[9+i]),"-----\n",6) != 0))
		{
		PEMerr(PEM_F_PEM_READ_BIO,PEM_R_BAD_END_LINE);
		goto err;
		}

	EVP_DecodeInit(&ctx);
	i=EVP_DecodeUpdate(&ctx,
		(unsigned char *)dataB->data,&bl,
		(unsigned char *)dataB->data,bl);
	if (i < 0)
		{
		PEMerr(PEM_F_PEM_READ_BIO,PEM_R_BAD_BASE64_DECODE);
		goto err;
		}
	i=EVP_DecodeFinal(&ctx,(unsigned char *)&(dataB->data[bl]),&k);
	if (i < 0)
		{
		PEMerr(PEM_F_PEM_READ_BIO,PEM_R_BAD_BASE64_DECODE);
		goto err;
		}
	bl+=k;

	if (bl == 0) goto err;
	*name=nameB->data;
	*header=headerB->data;
	*data=(unsigned char *)dataB->data;
	*len=bl;
	Free(nameB);
	Free(headerB);
	Free(dataB);
	return(1);
err:
	BUF_MEM_free(nameB);
	BUF_MEM_free(headerB);
	BUF_MEM_free(dataB);
	return(0);
	}
Commit	Line	Data
d02b48c6	1	/* crypto/pem/pem_lib.c */
58964a49	2	/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
d02b48c6 RE	3	* All rights reserved.
	4	*
	5	* This package is an SSL implementation written
	6	* by Eric Young (eay@cryptsoft.com).
	7	* The implementation was written so as to conform with Netscapes SSL.
	8	*
	9	* This library is free for commercial and non-commercial use as long as
	10	* the following conditions are aheared to. The following conditions
	11	* apply to all code found in this distribution, be it the RC4, RSA,
	12	* lhash, DES, etc., code; not just the SSL code. The SSL documentation
	13	* included with this distribution is covered by the same copyright terms
	14	* except that the holder is Tim Hudson (tjh@cryptsoft.com).
	15	*
	16	* Copyright remains Eric Young's, and as such any Copyright notices in
	17	* the code are not to be removed.
	18	* If this package is used in a product, Eric Young should be given attribution
	19	* as the author of the parts of the library used.
	20	* This can be in the form of a textual message at program startup or
	21	* in documentation (online or textual) provided with the package.
	22	*
	23	* Redistribution and use in source and binary forms, with or without
	24	* modification, are permitted provided that the following conditions
	25	* are met:
	26	* 1. Redistributions of source code must retain the copyright
	27	* notice, this list of conditions and the following disclaimer.
	28	* 2. Redistributions in binary form must reproduce the above copyright
	29	* notice, this list of conditions and the following disclaimer in the
	30	* documentation and/or other materials provided with the distribution.
	31	* 3. All advertising materials mentioning features or use of this software
	32	* must display the following acknowledgement:
	33	* "This product includes cryptographic software written by
	34	* Eric Young (eay@cryptsoft.com)"
	35	* The word 'cryptographic' can be left out if the rouines from the library
	36	* being used are not cryptographic related :-).
	37	* 4. If you include any Windows specific code (or a derivative thereof) from
	38	* the apps directory (application code) you must include an acknowledgement:
	39	* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
	40	*
	41	* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
	42	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	43	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	44	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
	45	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	46	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	47	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	48	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	49	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	50	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	51	* SUCH DAMAGE.
	52	*
	53	* The licence and distribution terms for any publically available version or
	54	* derivative of this code cannot be changed. i.e. this code cannot simply be
	55	* copied and put under another distribution licence
	56	* [including the GNU Public Licence.]
	57	*/
	58
	59	#include <stdio.h>
	60	#include "cryptlib.h"
ec577822 BM	61	#include <openssl/buffer.h>
	62	#include <openssl/objects.h>
	63	#include <openssl/evp.h>
	64	#include <openssl/rand.h>
	65	#include <openssl/x509.h>
	66	#include <openssl/pem.h>
d02b48c6	67	#ifndef NO_DES
ec577822	68	#include <openssl/des.h>
d02b48c6 RE	69	#endif
d02b48c6 RE	70
e778802f	71	const char *PEM_version="PEM" OPENSSL_VERSION_PTEXT;
d02b48c6 RE	72
	73	#define MIN_LENGTH 4
	74
	75	/* PEMerr(PEM_F_PEM_WRITE_BIO,ERR_R_MALLOC_FAILURE);
	76	* PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE);
	77	*/
	78
	79	#ifndef NOPROTO
	80	static int def_callback(char *buf, int num, int w);
	81	static int load_iv(unsigned char *fromp,unsigned char to, int num);
	82	#else
	83	static int def_callback();
	84	static int load_iv();
	85	#endif
	86
6b691a5c	87	static int def_callback(char *buf, int num, int w)
d02b48c6	88	{
58964a49	89	#ifdef NO_FP_API
d02b48c6 RE	90	/* We should not ever call the default callback routine from
	91	* windows. */
	92	PEMerr(PEM_F_DEF_CALLBACK,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
	93	return(-1);
	94	#else
	95	int i,j;
e778802f	96	const char *prompt;
d02b48c6 RE	97
	98	prompt=EVP_get_pw_prompt();
	99	if (prompt == NULL)
	100	prompt="Enter PEM pass phrase:";
	101
	102	for (;;)
	103	{
	104	i=EVP_read_pw_string(buf,num,prompt,w);
	105	if (i != 0)
	106	{
	107	PEMerr(PEM_F_DEF_CALLBACK,PEM_R_PROBLEMS_GETTING_PASSWORD);
	108	memset(buf,0,(unsigned int)num);
	109	return(-1);
	110	}
	111	j=strlen(buf);
	112	if (j < MIN_LENGTH)
	113	{
	114	fprintf(stderr,"phrase is too short, needs to be at least %d chars\n",MIN_LENGTH);
	115	}
	116	else
	117	break;
	118	}
	119	return(j);
	120	#endif
	121	}
	122
6b691a5c	123	void PEM_proc_type(char *buf, int type)
d02b48c6	124	{
e778802f	125	const char *str;
d02b48c6 RE	126
	127	if (type == PEM_TYPE_ENCRYPTED)
	128	str="ENCRYPTED";
	129	else if (type == PEM_TYPE_MIC_CLEAR)
	130	str="MIC-CLEAR";
	131	else if (type == PEM_TYPE_MIC_ONLY)
	132	str="MIC-ONLY";
	133	else
	134	str="BAD-TYPE";
	135
	136	strcat(buf,"Proc-Type: 4,");
	137	strcat(buf,str);
	138	strcat(buf,"\n");
	139	}
	140
6b691a5c	141	void PEM_dek_info(char buf, const char type, int len, char *str)
d02b48c6 RE	142	{
	143	static unsigned char map[17]="0123456789ABCDEF";
	144	long i;
	145	int j;
	146
	147	strcat(buf,"DEK-Info: ");
	148	strcat(buf,type);
	149	strcat(buf,",");
	150	j=strlen(buf);
	151	for (i=0; i<len; i++)
	152	{
	153	buf[j+i*2] =map[(str[i]>>4)&0x0f];
	154	buf[j+i*2+1]=map[(str[i] )&0x0f];
	155	}
	156	buf[j+i*2]='\n';
	157	buf[j+i*2+1]='\0';
	158	}
	159
58964a49	160	#ifndef NO_FP_API
6b691a5c UM	161	char PEM_ASN1_read(char (d2i)(), const char name, FILE fp, char *x,
6b691a5c UM	162	int (*cb)())
d02b48c6 RE	163	{
	164	BIO *b;
	165	char *ret;
	166
	167	if ((b=BIO_new(BIO_s_file())) == NULL)
	168	{
	169	PEMerr(PEM_F_PEM_ASN1_READ,ERR_R_BUF_LIB);
	170	return(0);
	171	}
	172	BIO_set_fp(b,fp,BIO_NOCLOSE);
	173	ret=PEM_ASN1_read_bio(d2i,name,b,x,cb);
	174	BIO_free(b);
	175	return(ret);
	176	}
	177	#endif
	178
6b691a5c UM	179	char PEM_ASN1_read_bio(char (d2i)(), const char name, BIO bp, char *x,
6b691a5c UM	180	int (*cb)())
d02b48c6 RE	181	{
	182	EVP_CIPHER_INFO cipher;
	183	char nm=NULL,header=NULL;
	184	unsigned char p=NULL,data=NULL;
	185	long len;
	186	char *ret=NULL;
	187
	188	for (;;)
	189	{
	190	if (!PEM_read_bio(bp,&nm,&header,&data,&len)) return(NULL);
	191	if ( (strcmp(nm,name) == 0) \|\|
	192	((strcmp(nm,PEM_STRING_RSA) == 0) &&
	193	(strcmp(name,PEM_STRING_EVP_PKEY) == 0)) \|\|
	194	((strcmp(nm,PEM_STRING_DSA) == 0) &&
	195	(strcmp(name,PEM_STRING_EVP_PKEY) == 0)) \|\|
	196	((strcmp(nm,PEM_STRING_X509_OLD) == 0) &&
	197	(strcmp(name,PEM_STRING_X509) == 0)) \|\|
	198	((strcmp(nm,PEM_STRING_X509_REQ_OLD) == 0) &&
	199	(strcmp(name,PEM_STRING_X509_REQ) == 0))
	200	)
	201	break;
	202	Free(nm);
	203	Free(header);
	204	Free(data);
	205	}
	206	if (!PEM_get_EVP_CIPHER_INFO(header,&cipher)) goto err;
	207	if (!PEM_do_header(&cipher,data,&len,cb)) goto err;
	208	p=data;
	209	if (strcmp(name,PEM_STRING_EVP_PKEY) == 0)
	210	{
	211	if (strcmp(nm,PEM_STRING_RSA) == 0)
	212	ret=d2i(EVP_PKEY_RSA,x,&p,len);
	213	else if (strcmp(nm,PEM_STRING_DSA) == 0)
	214	ret=d2i(EVP_PKEY_DSA,x,&p,len);
	215	}
	216	else
	217	ret=d2i(x,&p,len);
	218	if (ret == NULL)
	219	PEMerr(PEM_F_PEM_ASN1_READ_BIO,ERR_R_ASN1_LIB);
	220	err:
	221	Free(nm);
	222	Free(header);
	223	Free(data);
	224	return(ret);
	225	}
	226
58964a49	227	#ifndef NO_FP_API
6b691a5c UM	228	int PEM_ASN1_write(int (i2d)(), const char name, FILE fp, char x,
	229	const EVP_CIPHER enc, unsigned char kstr, int klen,
	230	int (*callback)())
d02b48c6 RE	231	{
	232	BIO *b;
	233	int ret;
	234
	235	if ((b=BIO_new(BIO_s_file())) == NULL)
	236	{
	237	PEMerr(PEM_F_PEM_ASN1_WRITE,ERR_R_BUF_LIB);
	238	return(0);
	239	}
	240	BIO_set_fp(b,fp,BIO_NOCLOSE);
	241	ret=PEM_ASN1_write_bio(i2d,name,b,x,enc,kstr,klen,callback);
	242	BIO_free(b);
	243	return(ret);
	244	}
	245	#endif
	246
6b691a5c UM	247	int PEM_ASN1_write_bio(int (i2d)(), const char name, BIO bp, char x,
	248	const EVP_CIPHER enc, unsigned char kstr, int klen,
	249	int (*callback)())
d02b48c6 RE	250	{
	251	EVP_CIPHER_CTX ctx;
	252	int dsize=0,i,j,ret=0;
	253	unsigned char p,data=NULL;
e778802f	254	const char *objstr=NULL;
d02b48c6 RE	255	#define PEM_BUFSIZE 1024
	256	char buf[PEM_BUFSIZE];
	257	unsigned char key[EVP_MAX_KEY_LENGTH];
	258	unsigned char iv[EVP_MAX_IV_LENGTH];
	259
	260	if (enc != NULL)
	261	{
	262	objstr=OBJ_nid2sn(EVP_CIPHER_nid(enc));
	263	if (objstr == NULL)
	264	{
	265	PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,PEM_R_UNSUPPORTED_CIPHER);
	266	goto err;
	267	}
	268	}
	269
58964a49 RE	270	if ((dsize=i2d(x,NULL)) < 0)
	271	{
	272	PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,ERR_R_MALLOC_FAILURE);
	273	dsize=0;
	274	goto err;
	275	}
d02b48c6 RE	276	/* dzise + 8 bytes are needed */
	277	data=(unsigned char *)Malloc((unsigned int)dsize+20);
	278	if (data == NULL)
	279	{
	280	PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,ERR_R_MALLOC_FAILURE);
	281	goto err;
	282	}
	283	p=data;
	284	i=i2d(x,&p);
	285
	286	if (enc != NULL)
	287	{
	288	if (kstr == NULL)
	289	{
	290	if (callback == NULL)
	291	klen=def_callback(buf,PEM_BUFSIZE,1);
	292	else
	293	klen=(*callback)(buf,PEM_BUFSIZE,1);
	294	if (klen <= 0)
	295	{
	296	PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,PEM_R_READ_KEY);
	297	goto err;
	298	}
	299	kstr=(unsigned char *)buf;
	300	}
	301	RAND_seed(data,i);/* put in the RSA key. */
	302	RAND_bytes(iv,8); /* Generate a salt */
	303	/* The 'iv' is used as the iv and as a salt. It is
	304	* NOT taken from the BytesToKey function */
	305	EVP_BytesToKey(enc,EVP_md5(),iv,kstr,klen,1,key,NULL);
	306
	307	if (kstr == (unsigned char *)buf) memset(buf,0,PEM_BUFSIZE);
	308
	309	buf[0]='\0';
	310	PEM_proc_type(buf,PEM_TYPE_ENCRYPTED);
	311	PEM_dek_info(buf,objstr,8,(char *)iv);
	312	/* k=strlen(buf); */
	313
	314	EVP_EncryptInit(&ctx,enc,key,iv);
	315	EVP_EncryptUpdate(&ctx,data,&j,data,i);
	316	EVP_EncryptFinal(&ctx,&(data[j]),&i);
	317	i+=j;
	318	ret=1;
	319	}
	320	else
	321	{
	322	ret=1;
	323	buf[0]='\0';
	324	}
	325	i=PEM_write_bio(bp,name,buf,data,i);
	326	if (i <= 0) ret=0;
	327	err:
	328	memset(key,0,sizeof(key));
	329	memset(iv,0,sizeof(iv));
	330	memset((char *)&ctx,0,sizeof(ctx));
	331	memset(buf,0,PEM_BUFSIZE);
	332	memset(data,0,(unsigned int)dsize);
	333	Free(data);
	334	return(ret);
	335	}
	336
6b691a5c UM	337	int PEM_do_header(EVP_CIPHER_INFO cipher, unsigned char data, long *plen,
6b691a5c UM	338	int (*callback)())
d02b48c6 RE	339	{
	340	int i,j,o,klen;
	341	long len;
	342	EVP_CIPHER_CTX ctx;
	343	unsigned char key[EVP_MAX_KEY_LENGTH];
	344	char buf[PEM_BUFSIZE];
	345
	346	len= *plen;
	347
	348	if (cipher->cipher == NULL) return(1);
	349	if (callback == NULL)
	350	klen=def_callback(buf,PEM_BUFSIZE,0);
	351	else
	352	klen=callback(buf,PEM_BUFSIZE,0);
	353	if (klen <= 0)
	354	{
	355	PEMerr(PEM_F_PEM_DO_HEADER,PEM_R_BAD_PASSWORD_READ);
	356	return(0);
	357	}
	358	EVP_BytesToKey(cipher->cipher,EVP_md5(),&(cipher->iv[0]),
	359	(unsigned char *)buf,klen,1,key,NULL);
	360
	361	j=(int)len;
	362	EVP_DecryptInit(&ctx,cipher->cipher,key,&(cipher->iv[0]));
	363	EVP_DecryptUpdate(&ctx,data,&i,data,j);
	364	o=EVP_DecryptFinal(&ctx,&(data[i]),&j);
	365	EVP_CIPHER_CTX_cleanup(&ctx);
	366	memset((char *)buf,0,sizeof(buf));
	367	memset((char *)key,0,sizeof(key));
	368	j+=i;
	369	if (!o)
	370	{
	371	PEMerr(PEM_F_PEM_DO_HEADER,PEM_R_BAD_DECRYPT);
	372	return(0);
	373	}
	374	*plen=j;
	375	return(1);
	376	}
	377
6b691a5c	378	int PEM_get_EVP_CIPHER_INFO(char header, EVP_CIPHER_INFO cipher)
d02b48c6 RE	379	{
d02b48c6 RE	380	int o;
e778802f	381	const EVP_CIPHER *enc=NULL;
d02b48c6 RE	382	char *p,c;
	383
	384	cipher->cipher=NULL;
	385	if ((header == NULL) \|\| (header == '\0') \|\| (header == '\n'))
	386	return(1);
	387	if (strncmp(header,"Proc-Type: ",11) != 0)
	388	{ PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_NOT_PROC_TYPE); return(0); }
	389	header+=11;
	390	if (*header != '4') return(0); header++;
	391	if (*header != ',') return(0); header++;
	392	if (strncmp(header,"ENCRYPTED",9) != 0)
	393	{ PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_NOT_ENCRYPTED); return(0); }
	394	for (; (header != '\n') && (header != '\0'); header++)
	395	;
	396	if (*header == '\0')
	397	{ PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_SHORT_HEADER); return(0); }
	398	header++;
	399	if (strncmp(header,"DEK-Info: ",10) != 0)
	400	{ PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_NOT_DEK_INFO); return(0); }
	401	header+=10;
	402
	403	p=header;
	404	for (;;)
	405	{
	406	c= *header;
	407	if (!( ((c >= 'A') && (c <= 'Z')) \|\| (c == '-') \|\|
	408	((c >= '0') && (c <= '9'))))
	409	break;
	410	header++;
	411	}
	412	*header='\0';
	413	o=OBJ_sn2nid(p);
	414	cipher->cipher=enc=EVP_get_cipherbyname(p);
	415	*header=c;
	416	header++;
	417
	418	if (enc == NULL)
	419	{
	420	PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_UNSUPPORTED_ENCRYPTION);
	421	return(0);
	422	}
	423	if (!load_iv((unsigned char **)&header,&(cipher->iv[0]),8)) return(0);
	424
	425	return(1);
	426	}
	427
6b691a5c	428	static int load_iv(unsigned char *fromp, unsigned char to, int num)
d02b48c6 RE	429	{
	430	int v,i;
	431	unsigned char *from;
	432
	433	from= *fromp;
	434	for (i=0; i<num; i++) to[i]=0;
	435	num*=2;
	436	for (i=0; i<num; i++)
	437	{
	438	if ((from >= '0') && (from <= '9'))
	439	v= *from-'0';
	440	else if ((from >= 'A') && (from <= 'F'))
	441	v= *from-'A'+10;
	442	else if ((from >= 'a') && (from <= 'f'))
	443	v= *from-'a'+10;
	444	else
	445	{
	446	PEMerr(PEM_F_LOAD_IV,PEM_R_BAD_IV_CHARS);
	447	return(0);
	448	}
	449	from++;
	450	to[i/2]\|=v<<(long)((!(i&1))*4);
	451	}
	452
	453	*fromp=from;
	454	return(1);
	455	}
	456
58964a49	457	#ifndef NO_FP_API
6b691a5c UM	458	int PEM_write(FILE fp, char name, char header, unsigned char data,
6b691a5c UM	459	long len)
d02b48c6 RE	460	{
	461	BIO *b;
	462	int ret;
	463
	464	if ((b=BIO_new(BIO_s_file())) == NULL)
	465	{
	466	PEMerr(PEM_F_PEM_WRITE,ERR_R_BUF_LIB);
	467	return(0);
	468	}
	469	BIO_set_fp(b,fp,BIO_NOCLOSE);
	470	ret=PEM_write_bio(b, name, header, data,len);
	471	BIO_free(b);
	472	return(ret);
	473	}
	474	#endif
	475
6b691a5c UM	476	int PEM_write_bio(BIO bp, const char name, char header, unsigned char data,
6b691a5c UM	477	long len)
d02b48c6 RE	478	{
	479	int nlen,n,i,j,outl;
	480	unsigned char *buf;
	481	EVP_ENCODE_CTX ctx;
	482	int reason=ERR_R_BUF_LIB;
	483
	484	EVP_EncodeInit(&ctx);
	485	nlen=strlen(name);
	486
	487	if ( (BIO_write(bp,"-----BEGIN ",11) != 11) \|\|
	488	(BIO_write(bp,name,nlen) != nlen) \|\|
	489	(BIO_write(bp,"-----\n",6) != 6))
	490	goto err;
	491
	492	i=strlen(header);
	493	if (i > 0)
	494	{
	495	if ( (BIO_write(bp,header,i) != i) \|\|
	496	(BIO_write(bp,"\n",1) != 1))
	497	goto err;
	498	}
	499
	500	buf=(unsigned char )Malloc(PEM_BUFSIZE8);
	501	if (buf == NULL)
	502	{
	503	reason=ERR_R_MALLOC_FAILURE;
	504	goto err;
	505	}
	506
	507	i=j=0;
	508	while (len > 0)
	509	{
	510	n=(int)((len>(PEM_BUFSIZE5))?(PEM_BUFSIZE5):len);
	511	EVP_EncodeUpdate(&ctx,buf,&outl,&(data[j]),n);
	512	if ((outl) && (BIO_write(bp,(char *)buf,outl) != outl))
	513	goto err;
	514	i+=outl;
	515	len-=n;
	516	j+=n;
	517	}
	518	EVP_EncodeFinal(&ctx,buf,&outl);
	519	if ((outl > 0) && (BIO_write(bp,(char *)buf,outl) != outl)) goto err;
	520	Free(buf);
	521	if ( (BIO_write(bp,"-----END ",9) != 9) \|\|
	522	(BIO_write(bp,name,nlen) != nlen) \|\|
	523	(BIO_write(bp,"-----\n",6) != 6))
	524	goto err;
	525	return(i+outl);
	526	err:
	527	PEMerr(PEM_F_PEM_WRITE_BIO,reason);
	528	return(0);
	529	}
	530
58964a49	531	#ifndef NO_FP_API
6b691a5c UM	532	int PEM_read(FILE fp, char name, char header, unsigned char *data,
6b691a5c UM	533	long *len)
d02b48c6 RE	534	{
	535	BIO *b;
	536	int ret;
	537
	538	if ((b=BIO_new(BIO_s_file())) == NULL)
	539	{
	540	PEMerr(PEM_F_PEM_READ,ERR_R_BUF_LIB);
	541	return(0);
	542	}
	543	BIO_set_fp(b,fp,BIO_NOCLOSE);
	544	ret=PEM_read_bio(b, name, header, data,len);
	545	BIO_free(b);
	546	return(ret);
	547	}
	548	#endif
	549
6b691a5c UM	550	int PEM_read_bio(BIO bp, char name, char header, unsigned char *data,
6b691a5c UM	551	long *len)
d02b48c6 RE	552	{
	553	EVP_ENCODE_CTX ctx;
	554	int end=0,i,k,bl=0,hl=0,nohead=0;
	555	char buf[256];
	556	BUF_MEM *nameB;
	557	BUF_MEM *headerB;
	558	BUF_MEM dataB,tmpB;
	559
	560	nameB=BUF_MEM_new();
	561	headerB=BUF_MEM_new();
	562	dataB=BUF_MEM_new();
	563	if ((nameB == NULL) \|\| (headerB == NULL) \|\| (dataB == NULL))
	564	{
	565	PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE);
	566	return(0);
	567	}
	568
	569	buf[254]='\0';
	570	for (;;)
	571	{
	572	i=BIO_gets(bp,buf,254);
	573
	574	if (i <= 0)
	575	{
	576	PEMerr(PEM_F_PEM_READ_BIO,PEM_R_NO_START_LINE);
	577	goto err;
	578	}
	579
	580	while ((i >= 0) && (buf[i] <= ' ')) i--;
	581	buf[++i]='\n'; buf[++i]='\0';
	582
	583	if (strncmp(buf,"-----BEGIN ",11) == 0)
	584	{
	585	i=strlen(&(buf[11]));
	586
	587	if (strncmp(&(buf[11+i-6]),"-----\n",6) != 0)
	588	continue;
	589	if (!BUF_MEM_grow(nameB,i+9))
	590	{
	591	PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE);
	592	goto err;
	593	}
61f5b6f3	594	memcpy(nameB->data,&(buf[11]),i-6);
d02b48c6 RE	595	nameB->data[i-6]='\0';
	596	break;
	597	}
	598	}
	599	hl=0;
	600	if (!BUF_MEM_grow(headerB,256))
	601	{ PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); goto err; }
	602	headerB->data[0]='\0';
	603	for (;;)
	604	{
	605	i=BIO_gets(bp,buf,254);
	606	if (i <= 0) break;
	607
	608	while ((i >= 0) && (buf[i] <= ' ')) i--;
	609	buf[++i]='\n'; buf[++i]='\0';
	610
	611	if (buf[0] == '\n') break;
	612	if (!BUF_MEM_grow(headerB,hl+i+9))
	613	{ PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); goto err; }
	614	if (strncmp(buf,"-----END ",9) == 0)
	615	{
	616	nohead=1;
	617	break;
	618	}
61f5b6f3	619	memcpy(&(headerB->data[hl]),buf,i);
d02b48c6 RE	620	headerB->data[hl+i]='\0';
	621	hl+=i;
	622	}
	623
	624	bl=0;
	625	if (!BUF_MEM_grow(dataB,1024))
	626	{ PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE); goto err; }
	627	dataB->data[0]='\0';
	628	if (!nohead)
	629	{
	630	for (;;)
	631	{
	632	i=BIO_gets(bp,buf,254);
	633	if (i <= 0) break;
	634
	635	while ((i >= 0) && (buf[i] <= ' ')) i--;
	636	buf[++i]='\n'; buf[++i]='\0';
	637
	638	if (i != 65) end=1;
	639	if (strncmp(buf,"-----END ",9) == 0)
	640	break;
	641	if (i > 65) break;
	642	if (!BUF_MEM_grow(dataB,i+bl+9))
	643	{
	644	PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE);
	645	goto err;
	646	}
61f5b6f3	647	memcpy(&(dataB->data[bl]),buf,i);
d02b48c6 RE	648	dataB->data[bl+i]='\0';
	649	bl+=i;
	650	if (end)
	651	{
	652	buf[0]='\0';
	653	i=BIO_gets(bp,buf,254);
	654	if (i <= 0) break;
	655
	656	while ((i >= 0) && (buf[i] <= ' ')) i--;
	657	buf[++i]='\n'; buf[++i]='\0';
	658
	659	break;
	660	}
	661	}
	662	}
	663	else
	664	{
	665	tmpB=headerB;
	666	headerB=dataB;
	667	dataB=tmpB;
	668	bl=hl;
	669	}
	670	i=strlen(nameB->data);
	671	if ( (strncmp(buf,"-----END ",9) != 0) \|\|
61f5b6f3	672	(strncmp(nameB->data,&(buf[9]),i) != 0) \|\|
d02b48c6 RE	673	(strncmp(&(buf[9+i]),"-----\n",6) != 0))
	674	{
	675	PEMerr(PEM_F_PEM_READ_BIO,PEM_R_BAD_END_LINE);
	676	goto err;
	677	}
	678
	679	EVP_DecodeInit(&ctx);
	680	i=EVP_DecodeUpdate(&ctx,
	681	(unsigned char *)dataB->data,&bl,
	682	(unsigned char *)dataB->data,bl);
	683	if (i < 0)
	684	{
	685	PEMerr(PEM_F_PEM_READ_BIO,PEM_R_BAD_BASE64_DECODE);
	686	goto err;
	687	}
	688	i=EVP_DecodeFinal(&ctx,(unsigned char *)&(dataB->data[bl]),&k);
	689	if (i < 0)
	690	{
	691	PEMerr(PEM_F_PEM_READ_BIO,PEM_R_BAD_BASE64_DECODE);
	692	goto err;
	693	}
	694	bl+=k;
	695
	696	if (bl == 0) goto err;
	697	*name=nameB->data;
	698	*header=headerB->data;
	699	data=(unsigned char )dataB->data;
	700	*len=bl;
	701	Free(nameB);
	702	Free(headerB);
	703	Free(dataB);
	704	return(1);
	705	err:
	706	BUF_MEM_free(nameB);
	707	BUF_MEM_free(headerB);
	708	BUF_MEM_free(dataB);
	709	return(0);
	710	}