*/
#include <stdio.h>
+#include <ctype.h>
#include "cryptlib.h"
#include <openssl/buffer.h>
#include <openssl/objects.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;
+const char PEM_version[]="PEM" OPENSSL_VERSION_PTEXT;
#define MIN_LENGTH 4
-static int load_iv(unsigned char **fromp,unsigned char *to, int num);
+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_DEF_CALLBACK,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+ PEMerr(PEM_F_PEM_DEF_CALLBACK,ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
return(-1);
#else
int i,j;
i=EVP_read_pw_string(buf,num,prompt,w);
if (i != 0)
{
- PEMerr(PEM_F_DEF_CALLBACK,PEM_R_PROBLEMS_GETTING_PASSWORD);
+ PEMerr(PEM_F_PEM_DEF_CALLBACK,PEM_R_PROBLEMS_GETTING_PASSWORD);
memset(buf,0,(unsigned int)num);
return(-1);
}
else
str="BAD-TYPE";
- strcat(buf,"Proc-Type: 4,");
- strcat(buf,str);
- strcat(buf,"\n");
+ 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 unsigned char map[17]="0123456789ABCDEF";
+ static const unsigned char map[17]="0123456789ABCDEF";
long i;
int j;
- strcat(buf,"DEK-Info: ");
- strcat(buf,type);
- strcat(buf,",");
+ 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];
}
#ifndef OPENSSL_NO_FP_API
-char *PEM_ASN1_read(char *(*d2i)(), const char *name, FILE *fp, char **x,
- pem_password_cb *cb, void *u)
+void *PEM_ASN1_read(d2i_of_void *d2i, const char *name, FILE *fp, void **x,
+ pem_password_cb *cb, void *u)
{
BIO *b;
- char *ret;
+ void *ret;
if ((b=BIO_new(BIO_s_file())) == NULL)
{
/* Make PEM_STRING_EVP_PKEY match any private key */
- if(!strcmp(nm,PEM_STRING_PKCS8) &&
- !strcmp(name,PEM_STRING_EVP_PKEY)) return 1;
-
- if(!strcmp(nm,PEM_STRING_PKCS8INF) &&
- !strcmp(name,PEM_STRING_EVP_PKEY)) return 1;
-
- if(!strcmp(nm,PEM_STRING_RSA) &&
- !strcmp(name,PEM_STRING_EVP_PKEY)) return 1;
+ 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(nm,PEM_STRING_DSA) &&
- !strcmp(name,PEM_STRING_EVP_PKEY)) return 1;
+ 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;
+ }
- if(!strcmp(nm,PEM_STRING_ECPRIVATEKEY) &&
- !strcmp(name,PEM_STRING_EVP_PKEY)) return 1;
/* Permit older strings */
if(!strcmp(nm,PEM_STRING_X509_OLD) &&
ret = 1;
err:
- if (!pnm) OPENSSL_free(nm);
+ 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(int (*i2d)(), const char *name, FILE *fp, char *x,
- const EVP_CIPHER *enc, unsigned char *kstr, int klen,
- pem_password_cb *callback, void *u)
+int PEM_ASN1_write(i2d_of_void *i2d, const char *name, FILE *fp,
+ char *x, const EVP_CIPHER *enc, unsigned char *kstr,
+ int klen, pem_password_cb *callback, void *u)
{
BIO *b;
int 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, void *u)
+int PEM_ASN1_write_bio(i2d_of_void *i2d, const char *name, BIO *bp,
+ char *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;
if ((dsize=i2d(x,NULL)) < 0)
{
- PEMerr(PEM_F_PEM_ASN1_WRITE_BIO,ERR_R_MALLOC_FAILURE);
+ 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)
{
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) memset(buf,0,PEM_BUFSIZE);
+ 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);
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);
+ OPENSSL_cleanse(key,sizeof(key));
+ OPENSSL_cleanse(iv,sizeof(iv));
+ OPENSSL_cleanse((char *)&ctx,sizeof(ctx));
+ OPENSSL_cleanse(buf,PEM_BUFSIZE);
if (data != NULL)
{
- memset(data,0,(unsigned int)dsize);
+ OPENSSL_cleanse(data,(unsigned int)dsize);
OPENSSL_free(data);
}
return(ret);
EVP_DecryptUpdate(&ctx,data,&i,data,j);
o=EVP_DecryptFinal_ex(&ctx,&(data[i]),&j);
EVP_CIPHER_CTX_cleanup(&ctx);
- memset((char *)buf,0,sizeof(buf));
- memset((char *)key,0,sizeof(key));
+ OPENSSL_cleanse((char *)buf,sizeof(buf));
+ OPENSSL_cleanse((char *)key,sizeof(key));
j+=i;
if (!o)
{
int o;
const EVP_CIPHER *enc=NULL;
char *p,c;
+ char **header_pp = &header;
cipher->cipher=NULL;
if ((header == NULL) || (*header == '\0') || (*header == '\n'))
PEMerr(PEM_F_PEM_GET_EVP_CIPHER_INFO,PEM_R_UNSUPPORTED_ENCRYPTION);
return(0);
}
- if (!load_iv((unsigned char **)&header,&(cipher->iv[0]),enc->iv_len)) return(0);
+ if (!load_iv(header_pp,&(cipher->iv[0]),enc->iv_len))
+ return(0);
return(1);
}
-static int load_iv(unsigned char **fromp, unsigned char *to, int num)
+static int load_iv(char **fromp, unsigned char *to, int num)
{
int v,i;
- unsigned char *from;
+ char *from;
from= *fromp;
for (i=0; i<num; i++) to[i]=0;
long len)
{
int nlen,n,i,j,outl;
- unsigned char *buf;
+ unsigned char *buf = NULL;
EVP_ENCODE_CTX ctx;
int reason=ERR_R_BUF_LIB;
goto err;
}
- buf=(unsigned char *)OPENSSL_malloc(PEM_BUFSIZE*8);
+ buf = OPENSSL_malloc(PEM_BUFSIZE*8);
if (buf == NULL)
{
reason=ERR_R_MALLOC_FAILURE;
EVP_EncodeFinal(&ctx,buf,&outl);
if ((outl > 0) && (BIO_write(bp,(char *)buf,outl) != outl)) goto err;
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_free(buf);
PEMerr(PEM_F_PEM_WRITE_BIO,reason);
return(0);
}
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);
}
if (strncmp(buf,"-----END ",9) == 0)
break;
if (i > 65) break;
- if (!BUF_MEM_grow(dataB,i+bl+9))
+ if (!BUF_MEM_grow_clean(dataB,i+bl+9))
{
PEMerr(PEM_F_PEM_READ_BIO,ERR_R_MALLOC_FAILURE);
goto err;
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;
+ }
+
projects / openssl.git / blobdiff