-/* crypto/pem/pem_lib.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
+/*
+ * Copyright 1995-2016 The OpenSSL Project Authors. 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.]
+ * Licensed under the OpenSSL license (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
*/
#include <stdio.h>
-#include "cryptlib.h"
+#include <ctype.h>
+#include <string.h>
+#include "internal/cryptlib.h"
#include <openssl/buffer.h>
#include <openssl/objects.h>
#include <openssl/evp.h>
#include <openssl/x509.h>
#include <openssl/pem.h>
#include <openssl/pkcs12.h>
-#ifndef NO_DES
+#include "internal/asn1_int.h"
#include <openssl/des.h>
-#endif
+#include <openssl/engine.h>
-const char *PEM_version="PEM" OPENSSL_VERSION_PTEXT;
+#define MIN_LENGTH 4
-#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);
-static int def_callback(char *buf, int num, int w);
-static int load_iv(unsigned char **fromp,unsigned char *to, int num);
-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);
+int PEM_def_callback(char *buf, int num, int w, void *key)
+{
+#if defined(OPENSSL_NO_STDIO) || defined(OPENSSL_NO_UI)
+ int i;
#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);
+ int i, j;
+ const char *prompt;
#endif
- }
+
+ if (key) {
+ i = strlen(key);
+ i = (i > num) ? num : i;
+ memcpy(buf, key, i);
+ return i;
+ }
+
+#if defined(OPENSSL_NO_STDIO) || defined(OPENSSL_NO_UI)
+ PEMerr(PEM_F_PEM_DEF_CALLBACK, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+ return -1;
+#else
+ prompt = EVP_get_pw_prompt();
+ if (prompt == NULL)
+ prompt = "Enter PEM pass phrase:";
+
+ for (;;) {
+ /*
+ * We assume that w == 0 means decryption,
+ * while w == 1 means encryption
+ */
+ int min_len = w ? MIN_LENGTH : 0;
+
+ i = EVP_read_pw_string_min(buf, min_len, 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 (min_len && j < min_len) {
+ fprintf(stderr,
+ "phrase is too short, needs to be at least %d chars\n",
+ min_len);
+ } 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");
- }
+{
+ 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";
+
+ OPENSSL_strlcat(buf, "Proc-Type: 4,", PEM_BUFSIZE);
+ OPENSSL_strlcat(buf, str, PEM_BUFSIZE);
+ OPENSSL_strlcat(buf, "\n", PEM_BUFSIZE);
+}
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,
- pem_password_cb *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);
- }
+{
+ static const unsigned char map[17] = "0123456789ABCDEF";
+ long i;
+ int j;
+
+ OPENSSL_strlcat(buf, "DEK-Info: ", PEM_BUFSIZE);
+ OPENSSL_strlcat(buf, type, PEM_BUFSIZE);
+ OPENSSL_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_STDIO
+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
-char *PEM_ASN1_read_bio(char *(*d2i)(), const char *name, BIO *bp, char **x,
- pem_password_cb *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_PKCS8) == 0) &&
- (strcmp(name,PEM_STRING_EVP_PKEY) == 0)) ||
- ((strcmp(nm,PEM_STRING_PKCS8INF) == 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 if (strcmp(nm,PEM_STRING_PKCS8INF) == 0) {
- PKCS8_PRIV_KEY_INFO *p8inf;
- p8inf=d2i_PKCS8_PRIV_KEY_INFO(
- (PKCS8_PRIV_KEY_INFO **) x, &p, len);
- ret = (char *)EVP_PKCS82PKEY(p8inf);
- PKCS8_PRIV_KEY_INFO_free(p8inf);
- } else if (strcmp(nm,PEM_STRING_PKCS8) == 0) {
- PKCS8_PRIV_KEY_INFO *p8inf;
- X509_SIG *p8;
- int klen;
- char psbuf[PEM_BUFSIZE];
- p8 = d2i_X509_SIG((X509_SIG **)x, &p, len);
- if(!p8) goto p8err;
- if (cb) klen=cb(psbuf,PEM_BUFSIZE,0);
- else klen=def_callback(psbuf,PEM_BUFSIZE,0);
- if (klen <= 0) {
- PEMerr(PEM_F_PEM_ASN1_READ_BIO,
- PEM_R_BAD_PASSWORD_READ);
- goto err;
- }
- p8inf = M_PKCS8_decrypt(p8, psbuf, klen);
- X509_SIG_free(p8);
- if(!p8inf) goto p8err;
- ret = (char *)EVP_PKCS82PKEY(p8inf);
- PKCS8_PRIV_KEY_INFO_free(p8inf);
- }
- } else ret=d2i(x,&p,len);
-p8err:
- 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,
- pem_password_cb *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);
+static int check_pem(const char *nm, const char *name)
+{
+ /* Normal matching nm and name */
+ if (strcmp(nm, name) == 0)
+ return 1;
+
+ /* Make PEM_STRING_EVP_PKEY match any private key */
+
+ if (strcmp(name, PEM_STRING_EVP_PKEY) == 0) {
+ int slen;
+ const EVP_PKEY_ASN1_METHOD *ameth;
+ if (strcmp(nm, PEM_STRING_PKCS8) == 0)
+ return 1;
+ if (strcmp(nm, PEM_STRING_PKCS8INF) == 0)
+ 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) == 0) {
+ 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
+ ENGINE_finish(e);
+#endif
+ return r;
+ }
+ }
+ return 0;
+ }
+ /* If reading DH parameters handle X9.42 DH format too */
+ if (strcmp(nm, PEM_STRING_DHXPARAMS) == 0
+ && strcmp(name, PEM_STRING_DHPARAMS) == 0)
+ return 1;
+
+ /* Permit older strings */
+
+ if (strcmp(nm, PEM_STRING_X509_OLD) == 0
+ && strcmp(name, PEM_STRING_X509) == 0)
+ return 1;
+
+ if (strcmp(nm, PEM_STRING_X509_REQ_OLD) == 0
+ && strcmp(name, PEM_STRING_X509_REQ) == 0)
+ return 1;
+
+ /* Allow normal certs to be read as trusted certs */
+ if (strcmp(nm, PEM_STRING_X509) == 0
+ && strcmp(name, PEM_STRING_X509_TRUSTED) == 0)
+ return 1;
+
+ if (strcmp(nm, PEM_STRING_X509_OLD) == 0
+ && strcmp(name, PEM_STRING_X509_TRUSTED) == 0)
+ return 1;
+
+ /* Some CAs use PKCS#7 with CERTIFICATE headers */
+ if (strcmp(nm, PEM_STRING_X509) == 0
+ && strcmp(name, PEM_STRING_PKCS7) == 0)
+ return 1;
+
+ if (strcmp(nm, PEM_STRING_PKCS7_SIGNED) == 0
+ && strcmp(name, PEM_STRING_PKCS7) == 0)
+ return 1;
+
+#ifndef OPENSSL_NO_CMS
+ if (strcmp(nm, PEM_STRING_X509) == 0
+ && strcmp(name, PEM_STRING_CMS) == 0)
+ return 1;
+ /* Allow CMS to be read from PKCS#7 headers */
+ if (strcmp(nm, PEM_STRING_PKCS7) == 0
+ && strcmp(name, PEM_STRING_CMS) == 0)
+ 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_STDIO
+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(int (*i2d)(), const char *name, BIO *bp, char *x,
- const EVP_CIPHER *enc, unsigned char *kstr, int klen,
- pem_password_cb *callback)
- {
- 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_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;
- }
+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 = NULL;
+ int dsize = 0, i = 0, j = 0, 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 || EVP_CIPHER_iv_length(enc) == 0) {
+ 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 = 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);
+ /* Convert the pass phrase from EBCDIC */
+ ebcdic2ascii(buf, buf, klen);
#endif
- 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);
- }
+ kstr = (unsigned char *)buf;
+ }
+ RAND_add(data, i, 0); /* put in the RSA key. */
+ OPENSSL_assert(EVP_CIPHER_iv_length(enc) <= (int)sizeof(iv));
+ if (RAND_bytes(iv, EVP_CIPHER_iv_length(enc)) <= 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
+ */
+ if (!EVP_BytesToKey(enc, EVP_md5(), iv, kstr, klen, 1, key, NULL))
+ goto err;
+
+ if (kstr == (unsigned char *)buf)
+ OPENSSL_cleanse(buf, PEM_BUFSIZE);
+
+ OPENSSL_assert(strlen(objstr) + 23 + 2 * EVP_CIPHER_iv_length(enc) + 13
+ <= sizeof buf);
+
+ buf[0] = '\0';
+ PEM_proc_type(buf, PEM_TYPE_ENCRYPTED);
+ PEM_dek_info(buf, objstr, EVP_CIPHER_iv_length(enc), (char *)iv);
+ /* k=strlen(buf); */
+
+ ret = 1;
+ if ((ctx = EVP_CIPHER_CTX_new()) == NULL
+ || !EVP_EncryptInit_ex(ctx, enc, NULL, key, iv)
+ || !EVP_EncryptUpdate(ctx, data, &j, data, i)
+ || !EVP_EncryptFinal_ex(ctx, &(data[j]), &i))
+ ret = 0;
+ if (ret == 0)
+ goto err;
+ i += j;
+ } 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));
+ EVP_CIPHER_CTX_free(ctx);
+ OPENSSL_cleanse(buf, PEM_BUFSIZE);
+ OPENSSL_clear_free(data, (unsigned int)dsize);
+ return (ret);
+}
int PEM_do_header(EVP_CIPHER_INFO *cipher, unsigned char *data, long *plen,
- pem_password_cb *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);
- }
+ pem_password_cb *callback, void *u)
+{
+ int ok;
+ int keylen;
+ long len = *plen;
+ int ilen = (int) len; /* EVP_DecryptUpdate etc. take int lengths */
+ EVP_CIPHER_CTX *ctx;
+ unsigned char key[EVP_MAX_KEY_LENGTH];
+ char buf[PEM_BUFSIZE];
+
+#if LONG_MAX > INT_MAX
+ /* Check that we did not truncate the length */
+ if (len > INT_MAX) {
+ PEMerr(PEM_F_PEM_DO_HEADER, PEM_R_HEADER_TOO_LONG);
+ return 0;
+ }
+#endif
+
+ if (cipher->cipher == NULL)
+ return 1;
+ if (callback == NULL)
+ keylen = PEM_def_callback(buf, PEM_BUFSIZE, 0, u);
+ else
+ keylen = callback(buf, PEM_BUFSIZE, 0, u);
+ if (keylen <= 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);
+ /* Convert the pass phrase from EBCDIC */
+ ebcdic2ascii(buf, buf, keylen);
#endif
- 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);
- }
+ if (!EVP_BytesToKey(cipher->cipher, EVP_md5(), &(cipher->iv[0]),
+ (unsigned char *)buf, keylen, 1, key, NULL))
+ return 0;
+
+ ctx = EVP_CIPHER_CTX_new();
+ if (ctx == NULL)
+ return 0;
+
+ ok = EVP_DecryptInit_ex(ctx, cipher->cipher, NULL, key, &(cipher->iv[0]));
+ if (ok)
+ ok = EVP_DecryptUpdate(ctx, data, &ilen, data, ilen);
+ if (ok) {
+ /* Squirrel away the length of data decrypted so far. */
+ *plen = ilen;
+ ok = EVP_DecryptFinal_ex(ctx, &(data[ilen]), &ilen);
+ }
+ if (ok)
+ *plen += ilen;
+ else
+ PEMerr(PEM_F_PEM_DO_HEADER, PEM_R_BAD_DECRYPT);
+
+ EVP_CIPHER_CTX_free(ctx);
+ OPENSSL_cleanse((char *)buf, sizeof(buf));
+ OPENSSL_cleanse((char *)key, sizeof(key));
+ return ok;
+}
+/*
+ * This implements a very limited PEM header parser that does not support the
+ * full grammar of rfc1421. In particular, folded headers are not supported,
+ * nor is additional whitespace.
+ *
+ * A robust implementation would make use of a library that turns the headers
+ * into a BIO from which one folded line is read at a time, and is then split
+ * into a header label and content. We would then parse the content of the
+ * headers we care about. This is overkill for just this limited use-case, but
+ * presumably we also parse rfc822-style headers for S/MIME, so a common
+ * abstraction might well be more generally useful.
+ */
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;
-#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';
- 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);
+{
+ static const char ProcType[] = "Proc-Type:";
+ static const char ENCRYPTED[] = "ENCRYPTED";
+ static const char DEKInfo[] = "DEK-Info:";
+ const EVP_CIPHER *enc = NULL;
+ int ivlen;
+ char *dekinfostart, c;
+
+ cipher->cipher = NULL;
+ if ((header == NULL) || (*header == '\0') || (*header == '\n'))
+ return 1;
+
+ if (strncmp(header, ProcType, sizeof(ProcType)-1) != 0) {
+ PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO, PEM_R_NOT_PROC_TYPE);
+ return 0;
+ }
+ header += sizeof(ProcType)-1;
+ header += strspn(header, " \t");
+
+ if (*header++ != '4' || *header++ != ',')
+ return 0;
+ header += strspn(header, " \t");
+
+ /* We expect "ENCRYPTED" followed by optional white-space + line break */
+ if (strncmp(header, ENCRYPTED, sizeof(ENCRYPTED)-1) != 0 ||
+ strspn(header+sizeof(ENCRYPTED)-1, " \t\r\n") == 0) {
+ PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO, PEM_R_NOT_ENCRYPTED);
+ return 0;
+ }
+ header += sizeof(ENCRYPTED)-1;
+ header += strspn(header, " \t\r");
+ if (*header++ != '\n') {
+ PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO, PEM_R_SHORT_HEADER);
+ return 0;
+ }
+
+ /*-
+ * https://tools.ietf.org/html/rfc1421#section-4.6.1.3
+ * We expect "DEK-Info: algo[,hex-parameters]"
+ */
+ if (strncmp(header, DEKInfo, sizeof(DEKInfo)-1) != 0) {
+ PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO, PEM_R_NOT_DEK_INFO);
+ return 0;
+ }
+ header += sizeof(DEKInfo)-1;
+ header += strspn(header, " \t");
+
+ /*
+ * DEK-INFO is a comma-separated combination of algorithm name and optional
+ * parameters.
+ */
+ dekinfostart = header;
+ header += strcspn(header, " \t,");
+ c = *header;
+ *header = '\0';
+ cipher->cipher = enc = EVP_get_cipherbyname(dekinfostart);
+ *header = c;
+ header += strspn(header, " \t");
+
+ if (enc == NULL) {
+ PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO, PEM_R_UNSUPPORTED_ENCRYPTION);
+ return 0;
+ }
+ ivlen = EVP_CIPHER_iv_length(enc);
+ if (ivlen > 0 && *header++ != ',') {
+ PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO, PEM_R_MISSING_DEK_IV);
+ return 0;
+ } else if (ivlen == 0 && *header == ',') {
+ PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO, PEM_R_UNEXPECTED_DEK_IV);
+ return 0;
+ }
+
+ if (!load_iv(&header, cipher->iv, EVP_CIPHER_iv_length(enc)))
+ 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++) {
+ v = OPENSSL_hexchar2int(*from);
+ if (v < 0) {
+ 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_STDIO
+int PEM_write(FILE *fp, const char *name, const char *header,
+ const 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_write_bio(BIO *bp, const char *name, const char *header,
+ const unsigned char *data, long len)
+{
+ int nlen, n, i, j, outl;
+ unsigned char *buf = NULL;
+ EVP_ENCODE_CTX *ctx = EVP_ENCODE_CTX_new();
+ int reason = ERR_R_BUF_LIB;
+
+ if (ctx == NULL) {
+ reason = ERR_R_MALLOC_FAILURE;
+ goto err;
+ }
+
+ 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;
+ if ((BIO_write(bp, "-----END ", 9) != 9) ||
+ (BIO_write(bp, name, nlen) != nlen) ||
+ (BIO_write(bp, "-----\n", 6) != 6))
+ goto err;
+ OPENSSL_clear_free(buf, PEM_BUFSIZE * 8);
+ EVP_ENCODE_CTX_free(ctx);
+ return (i + outl);
+ err:
+ OPENSSL_clear_free(buf, PEM_BUFSIZE * 8);
+ EVP_ENCODE_CTX_free(ctx);
+ PEMerr(PEM_F_PEM_WRITE_BIO, reason);
+ return (0);
+}
+
+#ifndef OPENSSL_NO_STDIO
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);
- }
+ 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);
- }
-
-/* This function writes a private key in PKCS#8 format: it is a "drop in"
- * replacement for PEM_write_bio_PrivateKey(). As usual if 'enc' is NULL then
- * it uses the unencrypted private key form. It uses PKCS#5 v2.0 password based
- * encryption algorithms.
- */
-
-int PEM_write_bio_PKCS8PrivateKey(BIO *bp, EVP_PKEY *x, const EVP_CIPHER *enc,
- unsigned char *kstr, int klen, pem_password_cb *cb)
+ long *len)
{
- X509_SIG *p8;
- PKCS8_PRIV_KEY_INFO *p8inf;
- char buf[PEM_BUFSIZE];
- int ret;
- if(!(p8inf = EVP_PKEY2PKCS8(x))) {
- PEMerr(PEM_F_PEM_WRITE_BIO_PKCS8PRIVATEKEY,
- PEM_R_ERROR_CONVERTING_PRIVATE_KEY);
- return 0;
- }
- if(enc) {
- if(!kstr) {
- if(!cb) klen = def_callback(buf, PEM_BUFSIZE, 1);
- else klen = cb(buf, PEM_BUFSIZE, 1);
- if(klen <= 0) {
- PEMerr(PEM_F_PEM_WRITE_BIO_PKCS8PRIVATEKEY,
- PEM_R_READ_KEY);
- PKCS8_PRIV_KEY_INFO_free(p8inf);
- return 0;
- }
-
- kstr = buf;
- }
- p8 = PKCS8_encrypt(-1, enc, kstr, klen, NULL, 0, 0, p8inf);
- if(kstr == (unsigned char *)buf) memset(buf, 0, klen);
- PKCS8_PRIV_KEY_INFO_free(p8inf);
- ret = PEM_write_bio_PKCS8(bp, p8);
- X509_SIG_free(p8);
- return ret;
- } else {
- ret = PEM_write_bio_PKCS8_PRIV_KEY_INFO(bp, p8inf);
- PKCS8_PRIV_KEY_INFO_free(p8inf);
- return ret;
- }
+ EVP_ENCODE_CTX *ctx = EVP_ENCODE_CTX_new();
+ int end = 0, i, k, bl = 0, hl = 0, nohead = 0;
+ char buf[256];
+ BUF_MEM *nameB;
+ BUF_MEM *headerB;
+ BUF_MEM *dataB, *tmpB;
+
+ if (ctx == NULL) {
+ PEMerr(PEM_F_PEM_READ_BIO, ERR_R_MALLOC_FAILURE);
+ return (0);
+ }
+
+ nameB = BUF_MEM_new();
+ headerB = BUF_MEM_new();
+ dataB = BUF_MEM_new();
+ if ((nameB == NULL) || (headerB == NULL) || (dataB == NULL)) {
+ goto err;
+ }
+
+ 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);
+ EVP_ENCODE_CTX_free(ctx);
+ return (1);
+ err:
+ BUF_MEM_free(nameB);
+ BUF_MEM_free(headerB);
+ BUF_MEM_free(dataB);
+ EVP_ENCODE_CTX_free(ctx);
+ return (0);
}
-int PEM_write_PKCS8PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
- unsigned char *kstr, int klen, pem_password_cb *cb)
+/*
+ * 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)
{
- BIO *bp;
- int ret;
- if(!(bp = BIO_new_fp(fp, BIO_NOCLOSE))) {
- PEMerr(PEM_F_PEM_F_PEM_WRITE_PKCS8PRIVATEKEY,ERR_R_BUF_LIB);
- return(0);
- }
- ret = PEM_write_bio_PKCS8PrivateKey(bp, x, enc, kstr, klen, cb);
- BIO_free(bp);
- return ret;
+ 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;
}
projects / openssl.git / blobdiff