transparently handle X9.42 DH parameters

(backport from HEAD)

diff --git a/CHANGES b/CHANGES
index b3df61c1838560e9226df11ea7639c3e07d6f811..2945371cb7e42ac4c8f7b18bf0cfbb76f482305e 100644 (file)
--- a/CHANGES
+++ b/CHANGES
@@ -4,6 +4,11 @@
 
  Changes between 1.0.1 and 1.0.2 [xx XXX xxxx]
 
+  *) Transparently support X9.42 DH parameters when calling
+     PEM_read_bio_DHparameters. This means existing applications can handle
+     the new parameter format automatically.
+     [Steve Henson]
+
   *) Initial experimental support for X9.42 DH parameter format: mainly
      to support use of 'q' parameter for RFC5114 parameters.
      [Steve Henson]

diff --git a/apps/dhparam.c b/apps/dhparam.c
index b47097cbb223e035fc85c970de34687967aa1fad..79c0d64c519eeafe0c9153b33fa445485fc09f58 100644 (file)
--- a/apps/dhparam.c
+++ b/apps/dhparam.c
@@ -513,7 +513,12 @@ bad:
                if      (outformat == FORMAT_ASN1)
                        i=i2d_DHparams_bio(out,dh);
                else if (outformat == FORMAT_PEM)
-                       i=PEM_write_bio_DHparams(out,dh);
+                       {
+                       if (dh->q)
+                               i=PEM_write_bio_DHxparams(out,dh);
+                       else
+                               i=PEM_write_bio_DHparams(out,dh);
+                       }
                else    {
                        BIO_printf(bio_err,"bad output format specified for outfile\n");
                        goto end;

diff --git a/crypto/pem/pem.h b/crypto/pem/pem.h
index 5872fcc1c5115fe0a05d898e13b1215d4108a219..00c274b35aae5735181376f2cfd90cc271c6d88a 100644 (file)
--- a/crypto/pem/pem.h
+++ b/crypto/pem/pem.h
@@ -594,8 +594,10 @@ void ERR_load_PEM_strings(void);
 #define PEM_F_PEM_PK8PKEY                               119
 #define PEM_F_PEM_READ                                  108
 #define PEM_F_PEM_READ_BIO                              109
+#define PEM_F_PEM_READ_BIO_DHPARAMS                     141
 #define PEM_F_PEM_READ_BIO_PARAMETERS                   140
 #define PEM_F_PEM_READ_BIO_PRIVATEKEY                   123
+#define PEM_F_PEM_READ_DHPARAMS                                 142
 #define PEM_F_PEM_READ_PRIVATEKEY                       124
 #define PEM_F_PEM_SEALFINAL                             110
 #define PEM_F_PEM_SEALINIT                              111

diff --git a/crypto/pem/pem_all.c b/crypto/pem/pem_all.c
index e09b24ad7a3af98860a01088435f7b7338844eef..5c8c6f415829be8f5ca3fdb82fb515986056b541 100644 (file)
--- a/crypto/pem/pem_all.c
+++ b/crypto/pem/pem_all.c
@@ -289,7 +289,7 @@ EC_KEY *PEM_read_ECPrivateKey(FILE *fp, EC_KEY **eckey, pem_password_cb *cb,
 
 #ifndef OPENSSL_NO_DH
 
-IMPLEMENT_PEM_rw_const(DHparams, DH, PEM_STRING_DHPARAMS, DHparams)
+IMPLEMENT_PEM_write_const(DHparams, DH, PEM_STRING_DHPARAMS, DHparams)
 IMPLEMENT_PEM_write_const(DHxparams, DH, PEM_STRING_DHXPARAMS, DHxparams)
 
 #endif

diff --git a/crypto/pem/pem_err.c b/crypto/pem/pem_err.c
index d644aeedd4f5b9cddab94cb229c3423485951f7d..9690224f53bf9fc682390781ab32fab16a9332a6 100644 (file)
--- a/crypto/pem/pem_err.c
+++ b/crypto/pem/pem_err.c
@@ -1,6 +1,6 @@
 /* crypto/pem/pem_err.c */
 /* ====================================================================
- * Copyright (c) 1999-2007 The OpenSSL Project.  All rights reserved.
+ * Copyright (c) 1999-2011 The OpenSSL Project.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -98,8 +98,10 @@ static ERR_STRING_DATA PEM_str_functs[]=
 {ERR_FUNC(PEM_F_PEM_PK8PKEY),  "PEM_PK8PKEY"},
 {ERR_FUNC(PEM_F_PEM_READ),     "PEM_read"},
 {ERR_FUNC(PEM_F_PEM_READ_BIO), "PEM_read_bio"},
+{ERR_FUNC(PEM_F_PEM_READ_BIO_DHPARAMS),        "PEM_READ_BIO_DHPARAMS"},
 {ERR_FUNC(PEM_F_PEM_READ_BIO_PARAMETERS),      "PEM_read_bio_Parameters"},
 {ERR_FUNC(PEM_F_PEM_READ_BIO_PRIVATEKEY),      "PEM_READ_BIO_PRIVATEKEY"},
+{ERR_FUNC(PEM_F_PEM_READ_DHPARAMS),    "PEM_READ_DHPARAMS"},
 {ERR_FUNC(PEM_F_PEM_READ_PRIVATEKEY),  "PEM_READ_PRIVATEKEY"},
 {ERR_FUNC(PEM_F_PEM_SEALFINAL),        "PEM_SealFinal"},
 {ERR_FUNC(PEM_F_PEM_SEALINIT), "PEM_SealInit"},

diff --git a/crypto/pem/pem_lib.c b/crypto/pem/pem_lib.c
index cfc89a992155416d949fb151d12eb0febdc9a2de..cfea16bdcafdef4f4aedeb3d70299bdff76dac31 100644 (file)
--- a/crypto/pem/pem_lib.c
+++ b/crypto/pem/pem_lib.c
@@ -236,6 +236,9 @@ static int check_pem(const char *nm, const char *name)
                        }
                return 0;
                }
+       /* If reading DH parameters handle X9.42 DH format too */
+       if(!strcmp(nm,PEM_STRING_DHXPARAMS) &&
+               !strcmp(name,PEM_STRING_DHPARAMS)) return 1;
 
        /* Permit older strings */
 

diff --git a/crypto/pem/pem_pkey.c b/crypto/pem/pem_pkey.c
index 8ecf24903bc2c0d598722b99dc3dbf9180477b4c..e9e41dd4e8dcbb66c49a9cc00757b5abe6a2be3d 100644 (file)
--- a/crypto/pem/pem_pkey.c
+++ b/crypto/pem/pem_pkey.c
@@ -68,6 +68,9 @@
 #ifndef OPENSSL_NO_ENGINE
 #include <openssl/engine.h>
 #endif
+#ifndef OPENSSL_NO_DH
+#include <openssl/dh.h>
+#endif
 #include "asn1_locl.h"
 
 int pem_check_suffix(const char *pem_str, const char *suffix);
@@ -240,3 +243,52 @@ int PEM_write_PrivateKey(FILE *fp, EVP_PKEY *x, const EVP_CIPHER *enc,
        }
 
 #endif
+
+#ifndef OPENSSL_NO_DH
+
+/* Transparently read in PKCS#3 or X9.42 DH parameters */
+
+DH *PEM_read_bio_DHparams(BIO *bp, DH **x, pem_password_cb *cb, void *u)
+       {
+       char *nm=NULL;
+       const unsigned char *p=NULL;
+       unsigned char *data=NULL;
+       long len;
+       DH *ret=NULL;
+
+       if (!PEM_bytes_read_bio(&data, &len, &nm, PEM_STRING_DHPARAMS,
+                                                               bp, cb, u))
+               return NULL;
+       p = data;
+
+       if (!strcmp(nm, PEM_STRING_DHXPARAMS))
+               ret = d2i_DHxparams(x, &p, len);
+       else
+               ret = d2i_DHparams(x, &p, len);
+
+       if (ret == NULL)
+               PEMerr(PEM_F_PEM_READ_BIO_DHPARAMS,ERR_R_ASN1_LIB);
+       OPENSSL_free(nm);
+       OPENSSL_free(data);
+       return ret;
+       }
+
+#ifndef OPENSSL_NO_FP_API
+DH *PEM_read_DHparams(FILE *fp, DH **x, pem_password_cb *cb, void *u)
+       {
+        BIO *b;
+        DH *ret;
+
+        if ((b=BIO_new(BIO_s_file())) == NULL)
+               {
+               PEMerr(PEM_F_PEM_READ_DHPARAMS,ERR_R_BUF_LIB);
+                return(0);
+               }
+        BIO_set_fp(b,fp,BIO_NOCLOSE);
+        ret=PEM_read_bio_DHparams(b,x,cb,u);
+        BIO_free(b);
+        return(ret);
+       }
+#endif
+
+#endif