Initial import

1 files changed, 852 insertions, 0 deletions

diff --git a/openssl/crypto/pem/pem_lib.c b/openssl/crypto/pem/pem_lib.c
new file mode 100644
index 00000000..cfc89a99
--- /dev/null
+++ b/openssl/crypto/pem/pem_lib.c
@@ -0,0 +1,852 @@
+/* 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 <ctype.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>
+#include <openssl/pkcs12.h>
+#include "asn1_locl.h"
+#ifndef OPENSSL_NO_DES
+#include <openssl/des.h>
+#endif
+#ifndef OPENSSL_NO_ENGINE
+#include <openssl/engine.h>
+#endif
+
+const char PEM_version[]="PEM" OPENSSL_VERSION_PTEXT;
+
+#define MIN_LENGTH	4
+
+static int load_iv(char **fromp,unsigned char *to, int num);
+static int check_pem(const char *nm, const char *name);
+int pem_check_suffix(const char *pem_str, const char *suffix);
+
+int PEM_def_callback(char *buf, int num, int w, void *key)
+	{
+#ifdef OPENSSL_NO_FP_API
+	/* We should not ever call the default callback routine from
+	 * windows. */
+	PEMerr(PEM_F_PEM_DEF_CALLBACK,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+	return(-1);
+#else
+	int i,j;
+	const char *prompt;
+	if(key) {
+		i=strlen(key);
+		i=(i > num)?num:i;
+		memcpy(buf,key,i);
+		return(i);
+	}
+
+	prompt=EVP_get_pw_prompt();
+	if (prompt == NULL)
+		prompt="Enter PEM pass phrase:";
+
+	for (;;)
+		{
+		i=EVP_read_pw_string_min(buf,MIN_LENGTH,num,prompt,w);
+		if (i != 0)
+			{
+			PEMerr(PEM_F_PEM_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";
+		
+	BUF_strlcat(buf,"Proc-Type: 4,",PEM_BUFSIZE);
+	BUF_strlcat(buf,str,PEM_BUFSIZE);
+	BUF_strlcat(buf,"\n",PEM_BUFSIZE);
+	}
+
+void PEM_dek_info(char *buf, const char *type, int len, char *str)
+	{
+	static const unsigned char map[17]="0123456789ABCDEF";
+	long i;
+	int j;
+
+	BUF_strlcat(buf,"DEK-Info: ",PEM_BUFSIZE);
+	BUF_strlcat(buf,type,PEM_BUFSIZE);
+	BUF_strlcat(buf,",",PEM_BUFSIZE);
+	j=strlen(buf);
+	if (j + (len * 2) + 1 > PEM_BUFSIZE)
+        	return;
+	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 OPENSSL_NO_FP_API
+void *PEM_ASN1_read(d2i_of_void *d2i, const char *name, FILE *fp, void **x,
+		    pem_password_cb *cb, void *u)
+	{
+        BIO *b;
+        void *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,u);
+        BIO_free(b);
+        return(ret);
+	}
+#endif
+
+static int check_pem(const char *nm, const char *name)
+{
+	/* Normal matching nm and name */
+	if (!strcmp(nm,name)) return 1;
+
+	/* Make PEM_STRING_EVP_PKEY match any private key */
+
+	if(!strcmp(name,PEM_STRING_EVP_PKEY))
+		{
+		int slen;
+		const EVP_PKEY_ASN1_METHOD *ameth;
+		if(!strcmp(nm,PEM_STRING_PKCS8))
+			return 1;
+		if(!strcmp(nm,PEM_STRING_PKCS8INF))
+			return 1;
+		slen = pem_check_suffix(nm, "PRIVATE KEY"); 
+		if (slen > 0)
+			{
+			/* NB: ENGINE implementations wont contain
+			 * a deprecated old private key decode function
+			 * so don't look for them.
+			 */
+			ameth = EVP_PKEY_asn1_find_str(NULL, nm, slen);
+			if (ameth && ameth->old_priv_decode)
+				return 1;
+			}
+		return 0;
+		}
+
+	if(!strcmp(name,PEM_STRING_PARAMETERS))
+		{
+		int slen;
+		const EVP_PKEY_ASN1_METHOD *ameth;
+		slen = pem_check_suffix(nm, "PARAMETERS"); 
+		if (slen > 0)
+			{
+			ENGINE *e;
+			ameth = EVP_PKEY_asn1_find_str(&e, nm, slen);
+			if (ameth)
+				{
+				int r;
+				if (ameth->param_decode)
+					r = 1;
+				else
+					r = 0;
+#ifndef OPENSSL_NO_ENGINE
+				if (e)
+					ENGINE_finish(e);
+#endif
+				return r;
+				}
+			}
+		return 0;
+		}
+
+	/* Permit older strings */
+
+	if(!strcmp(nm,PEM_STRING_X509_OLD) &&
+		!strcmp(name,PEM_STRING_X509)) return 1;
+
+	if(!strcmp(nm,PEM_STRING_X509_REQ_OLD) &&
+		!strcmp(name,PEM_STRING_X509_REQ)) return 1;
+
+	/* Allow normal certs to be read as trusted certs */
+	if(!strcmp(nm,PEM_STRING_X509) &&
+		!strcmp(name,PEM_STRING_X509_TRUSTED)) return 1;
+
+	if(!strcmp(nm,PEM_STRING_X509_OLD) &&
+		!strcmp(name,PEM_STRING_X509_TRUSTED)) return 1;
+
+	/* Some CAs use PKCS#7 with CERTIFICATE headers */
+	if(!strcmp(nm, PEM_STRING_X509) &&
+		!strcmp(name, PEM_STRING_PKCS7)) return 1;
+
+	if(!strcmp(nm, PEM_STRING_PKCS7_SIGNED) &&
+		!strcmp(name, PEM_STRING_PKCS7)) return 1;
+
+#ifndef OPENSSL_NO_CMS
+	if(!strcmp(nm, PEM_STRING_X509) &&
+		!strcmp(name, PEM_STRING_CMS)) return 1;
+	/* Allow CMS to be read from PKCS#7 headers */
+	if(!strcmp(nm, PEM_STRING_PKCS7) &&
+		!strcmp(name, PEM_STRING_CMS)) return 1;
+#endif
+
+	return 0;
+}
+
+int PEM_bytes_read_bio(unsigned char **pdata, long *plen, char **pnm, const char *name, BIO *bp,
+	     pem_password_cb *cb, void *u)
+	{
+	EVP_CIPHER_INFO cipher;
+	char *nm=NULL,*header=NULL;
+	unsigned char *data=NULL;
+	long len;
+	int ret = 0;
+
+	for (;;)
+		{
+		if (!PEM_read_bio(bp,&nm,&header,&data,&len)) {
+			if(ERR_GET_REASON(ERR_peek_error()) ==
+				PEM_R_NO_START_LINE)
+				ERR_add_error_data(2, "Expecting: ", name);
+			return 0;
+		}
+		if(check_pem(nm, name)) break;
+		OPENSSL_free(nm);
+		OPENSSL_free(header);
+		OPENSSL_free(data);
+		}
+	if (!PEM_get_EVP_CIPHER_INFO(header,&cipher)) goto err;
+	if (!PEM_do_header(&cipher,data,&len,cb,u)) goto err;
+
+	*pdata = data;
+	*plen = len;
+
+	if (pnm)
+		*pnm = nm;
+
+	ret = 1;
+
+err:
+	if (!ret || !pnm) OPENSSL_free(nm);
+	OPENSSL_free(header);
+	if (!ret) OPENSSL_free(data);
+	return ret;
+	}
+
+#ifndef OPENSSL_NO_FP_API
+int PEM_ASN1_write(i2d_of_void *i2d, const char *name, FILE *fp,
+		   void *x, const EVP_CIPHER *enc, unsigned char *kstr,
+		   int klen, pem_password_cb *callback, void *u)
+        {
+        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,u);
+        BIO_free(b);
+        return(ret);
+        }
+#endif
+
+int PEM_ASN1_write_bio(i2d_of_void *i2d, const char *name, BIO *bp,
+		       void *x, const EVP_CIPHER *enc, unsigned char *kstr,
+		       int klen, pem_password_cb *callback, void *u)
+	{
+	EVP_CIPHER_CTX ctx;
+	int dsize=0,i,j,ret=0;
+	unsigned char *p,*data=NULL;
+	const char *objstr=NULL;
+	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_ASN1_LIB);
+		dsize=0;
+		goto err;
+		}
+	/* dzise + 8 bytes are needed */
+	/* actually it needs the cipher block size extra... */
+	data=(unsigned char *)OPENSSL_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=PEM_def_callback(buf,PEM_BUFSIZE,1,u);
+			else
+				klen=(*callback)(buf,PEM_BUFSIZE,1,u);
+			if (klen <= 0)
+				{
+				PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,PEM_R_READ_KEY);
+				goto err;
+				}
+#ifdef CHARSET_EBCDIC
+			/* Convert the pass phrase from EBCDIC */
+			ebcdic2ascii(buf, buf, klen);
+#endif
+			kstr=(unsigned char *)buf;
+			}
+		RAND_add(data,i,0);/* put in the RSA key. */
+		OPENSSL_assert(enc->iv_len <= (int)sizeof(iv));
+		if (RAND_pseudo_bytes(iv,enc->iv_len) < 0) /* Generate a salt */
+			goto err;
+		/* 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) OPENSSL_cleanse(buf,PEM_BUFSIZE);
+
+		OPENSSL_assert(strlen(objstr)+23+2*enc->iv_len+13 <= sizeof buf);
+
+		buf[0]='\0';
+		PEM_proc_type(buf,PEM_TYPE_ENCRYPTED);
+		PEM_dek_info(buf,objstr,enc->iv_len,(char *)iv);
+		/* k=strlen(buf); */
+
+		EVP_CIPHER_CTX_init(&ctx);
+		EVP_EncryptInit_ex(&ctx,enc,NULL,key,iv);
+		EVP_EncryptUpdate(&ctx,data,&j,data,i);
+		EVP_EncryptFinal_ex(&ctx,&(data[j]),&i);
+		EVP_CIPHER_CTX_cleanup(&ctx);
+		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:
+	OPENSSL_cleanse(key,sizeof(key));
+	OPENSSL_cleanse(iv,sizeof(iv));
+	OPENSSL_cleanse((char *)&ctx,sizeof(ctx));
+	OPENSSL_cleanse(buf,PEM_BUFSIZE);
+	if (data != NULL)
+		{
+		OPENSSL_cleanse(data,(unsigned int)dsize);
+		OPENSSL_free(data);
+		}
+	return(ret);
+	}
+
+int PEM_do_header(EVP_CIPHER_INFO *cipher, unsigned char *data, long *plen,
+	     pem_password_cb *callback,void *u)
+	{
+	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=PEM_def_callback(buf,PEM_BUFSIZE,0,u);
+	else
+		klen=callback(buf,PEM_BUFSIZE,0,u);
+	if (klen <= 0)
+		{
+		PEMerr(PEM_F_PEM_DO_HEADER,PEM_R_BAD_PASSWORD_READ);
+		return(0);
+		}
+#ifdef CHARSET_EBCDIC
+	/* Convert the pass phrase from EBCDIC */
+	ebcdic2ascii(buf, buf, klen);
+#endif
+
+	EVP_BytesToKey(cipher->cipher,EVP_md5(),&(cipher->iv[0]),
+		(unsigned char *)buf,klen,1,key,NULL);
+
+	j=(int)len;
+	EVP_CIPHER_CTX_init(&ctx);
+	EVP_DecryptInit_ex(&ctx,cipher->cipher,NULL, key,&(cipher->iv[0]));
+	EVP_DecryptUpdate(&ctx,data,&i,data,j);
+	o=EVP_DecryptFinal_ex(&ctx,&(data[i]),&j);
+	EVP_CIPHER_CTX_cleanup(&ctx);
+	OPENSSL_cleanse((char *)buf,sizeof(buf));
+	OPENSSL_cleanse((char *)key,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)
+	{
+	const EVP_CIPHER *enc=NULL;
+	char *p,c;
+	char **header_pp = &header;
+
+	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;
+#ifndef CHARSET_EBCDIC
+		if (!(	((c >= 'A') && (c <= 'Z')) || (c == '-') ||
+			((c >= '0') && (c <= '9'))))
+			break;
+#else
+		if (!(	isupper(c) || (c == '-') ||
+			isdigit(c)))
+			break;
+#endif
+		header++;
+		}
+	*header='\0';
+	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(header_pp,&(cipher->iv[0]),enc->iv_len))
+		return(0);
+
+	return(1);
+	}
+
+static int load_iv(char **fromp, unsigned char *to, int num)
+	{
+	int v,i;
+	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 OPENSSL_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 = NULL;
+	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 = OPENSSL_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;
+	OPENSSL_cleanse(buf, PEM_BUFSIZE*8);
+	OPENSSL_free(buf);
+	buf = NULL;
+	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:
+	if (buf) {
+		OPENSSL_cleanse(buf, PEM_BUFSIZE*8);
+		OPENSSL_free(buf);
+	}
+	PEMerr(PEM_F_PEM_WRITE_BIO,reason);
+	return(0);
+	}
+
+#ifndef OPENSSL_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))
+		{
+		BUF_MEM_free(nameB);
+		BUF_MEM_free(headerB);
+		BUF_MEM_free(dataB);
+		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_clean(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;
+	OPENSSL_free(nameB);
+	OPENSSL_free(headerB);
+	OPENSSL_free(dataB);
+	return(1);
+err:
+	BUF_MEM_free(nameB);
+	BUF_MEM_free(headerB);
+	BUF_MEM_free(dataB);
+	return(0);
+	}
+
+/* Check pem string and return prefix length.
+ * If for example the pem_str == "RSA PRIVATE KEY" and suffix = "PRIVATE KEY"
+ * the return value is 3 for the string "RSA".
+ */
+
+int pem_check_suffix(const char *pem_str, const char *suffix)
+	{
+	int pem_len = strlen(pem_str);
+	int suffix_len = strlen(suffix);
+	const char *p;
+	if (suffix_len + 1 >= pem_len)
+		return 0;
+	p = pem_str + pem_len - suffix_len;
+	if (strcmp(p, suffix))
+		return 0;
+	p--;
+	if (*p != ' ')
+		return 0;
+	return p - pem_str;
+	}
+