Add certificate and request demos.
authorDr. Stephen Henson <steve@openssl.org>
Wed, 12 Sep 2001 00:19:20 +0000 (00:19 +0000)
committerDr. Stephen Henson <steve@openssl.org>
Wed, 12 Sep 2001 00:19:20 +0000 (00:19 +0000)
Fix X509V3 macro so they compile.

CHANGES
crypto/x509v3/x509v3.h
demos/x509/README [new file with mode: 0644]
demos/x509/mkcert.c [new file with mode: 0644]
demos/x509/mkreq.c [new file with mode: 0644]

diff --git a/CHANGES b/CHANGES
index 3b46709..4986190 100644 (file)
--- a/CHANGES
+++ b/CHANGES
@@ -12,6 +12,9 @@
          *) applies to 0.9.6a/0.9.6b/0.9.6c and 0.9.7
          +) applies to 0.9.7 only
 
+  +) Add some demos for certificate and certificate request creation.
+     [Steve Henson]
+
   +) Make maximum certificate chain size accepted from the peer application
      settable (SSL*_get/set_max_cert_list()), as proposed by
      "Douglas E. Engert" <deengert@anl.gov>.
index 8dfa73c..096dc56 100644 (file)
@@ -292,7 +292,7 @@ DECLARE_ASN1_SET_OF(POLICYINFO)
 
 #define X509V3_set_ctx_test(ctx) \
                        X509V3_set_ctx(ctx, NULL, NULL, NULL, NULL, CTX_TEST)
-#define X509V3_set_ctx_nodb(ctx) ctx->db = NULL;
+#define X509V3_set_ctx_nodb(ctx) (ctx)->db = NULL;
 
 #define EXT_BITSTRING(nid, table) { nid, 0, ASN1_ITEM_ref(ASN1_BIT_STRING), \
                        0,0,0,0, \
diff --git a/demos/x509/README b/demos/x509/README
new file mode 100644 (file)
index 0000000..88f9d6c
--- /dev/null
@@ -0,0 +1,3 @@
+This directory contains examples of how to contruct
+various X509 structures. Certificates, certificate requests
+and CRLs.
diff --git a/demos/x509/mkcert.c b/demos/x509/mkcert.c
new file mode 100644 (file)
index 0000000..4709e18
--- /dev/null
@@ -0,0 +1,168 @@
+/* Certificate creation. Demonstrates some certificate related
+ * operations.
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <openssl/pem.h>
+#include <openssl/conf.h>
+#include <openssl/x509v3.h>
+#include <openssl/engine.h>
+
+int mkcert(X509 **x509p, EVP_PKEY **pkeyp, int bits, int serial, int days);
+int add_ext(X509 *cert, int nid, char *value);
+
+int main(int argc, char **argv)
+       {
+       BIO *bio_err;
+       X509 *x509=NULL;
+       EVP_PKEY *pkey=NULL;
+
+       CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
+
+       bio_err=BIO_new_fp(stderr, BIO_NOCLOSE);
+
+       mkcert(&x509,&pkey,512,0,365);
+
+       RSA_print_fp(stdout,pkey->pkey.rsa,0);
+       X509_print_fp(stdout,x509);
+
+       PEM_write_PrivateKey(stdout,pkey,NULL,NULL,0,NULL, NULL);
+       PEM_write_X509(stdout,x509);
+
+       X509_free(x509);
+       EVP_PKEY_free(pkey);
+
+       ENGINE_cleanup();
+       CRYPTO_cleanup_all_ex_data();
+
+       CRYPTO_mem_leaks(bio_err);
+       BIO_free(bio_err);
+       return(0);
+       }
+
+static void callback(int p, int n, void *arg)
+       {
+       char c='B';
+
+       if (p == 0) c='.';
+       if (p == 1) c='+';
+       if (p == 2) c='*';
+       if (p == 3) c='\n';
+       fputc(c,stderr);
+       }
+
+int mkcert(X509 **x509p, EVP_PKEY **pkeyp, int bits, int serial, int days)
+       {
+       X509 *x;
+       EVP_PKEY *pk;
+       RSA *rsa;
+       X509_NAME *name=NULL;
+       
+       if ((pkeyp == NULL) || (*pkeyp == NULL))
+               {
+               if ((pk=EVP_PKEY_new()) == NULL)
+                       {
+                       abort(); 
+                       return(0);
+                       }
+               }
+       else
+               pk= *pkeyp;
+
+       if ((x509p == NULL) || (*x509p == NULL))
+               {
+               if ((x=X509_new()) == NULL)
+                       goto err;
+               }
+       else
+               x= *x509p;
+
+       rsa=RSA_generate_key(bits,RSA_F4,callback,NULL);
+       if (!EVP_PKEY_assign_RSA(pk,rsa))
+               {
+               abort();
+               goto err;
+               }
+       rsa=NULL;
+
+       X509_set_version(x,3);
+       ASN1_INTEGER_set(X509_get_serialNumber(x),serial);
+       X509_gmtime_adj(X509_get_notBefore(x),0);
+       X509_gmtime_adj(X509_get_notAfter(x),(long)60*60*24*days);
+       X509_set_pubkey(x,pk);
+
+       name=X509_get_subject_name(x);
+
+       /* This function creates and adds the entry, working out the
+        * correct string type and performing checks on its length.
+        * Normally we'd check the return value for errors...
+        */
+       X509_NAME_add_entry_by_txt(name,"C",
+                               MBSTRING_ASC, "UK", -1, -1, 0);
+       X509_NAME_add_entry_by_txt(name,"CN",
+                               MBSTRING_ASC, "OpenSSL Group", -1, -1, 0);
+
+       /* Its self signed so set the issuer name to be the same as the
+        * subject.
+        */
+       X509_set_issuer_name(x,name);
+
+       /* Add various extensions: standard extensions */
+       add_ext(x, NID_basic_constraints, "critical,CA:TRUE");
+       add_ext(x, NID_key_usage, "critical,keyCertSign,cRLSign");
+
+       add_ext(x, NID_subject_key_identifier, "hash");
+
+       /* Some Netscape specific extensions */
+       add_ext(x, NID_netscape_cert_type, "sslCA");
+
+       add_ext(x, NID_netscape_comment, "example comment extension");
+
+
+#ifdef CUSTOM_EXT
+       /* Maybe even add our own extension based on existing */
+       {
+               int nid;
+               nid = OBJ_create("1.2.3.4", "MyAlias", "My Test Alias Extension");
+               X509V3_EXT_add_alias(nid, NID_netscape_comment);
+               add_ext(x, nid, "example comment alias");
+       }
+#endif
+       
+       if (!X509_sign(x,pk,EVP_md5()))
+               goto err;
+
+       *x509p=x;
+       *pkeyp=pk;
+       return(1);
+err:
+       return(0);
+       }
+
+/* Add extension using V3 code: we can set the config file as NULL
+ * because we wont reference any other sections.
+ */
+
+int add_ext(X509 *cert, int nid, char *value)
+       {
+       X509_EXTENSION *ex;
+       X509V3_CTX ctx;
+       /* This sets the 'context' of the extensions. */
+       /* No configuration database */
+       X509V3_set_ctx_nodb(&ctx);
+       /* Issuer and subject certs: both the target since it is self signed,
+        * no request and no CRL
+        */
+       X509V3_set_ctx(&ctx, cert, cert, NULL, NULL, 0);
+       ex = X509V3_EXT_conf_nid(NULL, &ctx, nid, value);
+       if (!ex)
+               return 0;
+
+       X509_add_ext(cert,ex,-1);
+       X509_EXTENSION_free(ex);
+       return 1;
+       }
+       
diff --git a/demos/x509/mkreq.c b/demos/x509/mkreq.c
new file mode 100644 (file)
index 0000000..d69dcc3
--- /dev/null
@@ -0,0 +1,157 @@
+/* Certificate request creation. Demonstrates some request related
+ * operations.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <openssl/pem.h>
+#include <openssl/conf.h>
+#include <openssl/x509v3.h>
+#include <openssl/engine.h>
+
+int mkreq(X509_REQ **x509p, EVP_PKEY **pkeyp, int bits, int serial, int days);
+int add_ext(STACK_OF(X509_REQUEST) *sk, int nid, char *value);
+
+int main(int argc, char **argv)
+       {
+       BIO *bio_err;
+       X509_REQ *req=NULL;
+       EVP_PKEY *pkey=NULL;
+
+       CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ON);
+
+       bio_err=BIO_new_fp(stderr, BIO_NOCLOSE);
+
+       mkreq(&req,&pkey,512,0,365);
+
+       RSA_print_fp(stdout,pkey->pkey.rsa,0);
+       X509_REQ_print_fp(stdout,req);
+
+       PEM_write_X509_REQ(stdout,req);
+
+       X509_REQ_free(req);
+       EVP_PKEY_free(pkey);
+
+       ENGINE_cleanup();
+       CRYPTO_cleanup_all_ex_data();
+
+       CRYPTO_mem_leaks(bio_err);
+       BIO_free(bio_err);
+       return(0);
+       }
+
+static void callback(int p, int n, void *arg)
+       {
+       char c='B';
+
+       if (p == 0) c='.';
+       if (p == 1) c='+';
+       if (p == 2) c='*';
+       if (p == 3) c='\n';
+       fputc(c,stderr);
+       }
+
+int mkreq(X509_REQ **req, EVP_PKEY **pkeyp, int bits, int serial, int days)
+       {
+       X509_REQ *x;
+       EVP_PKEY *pk;
+       RSA *rsa;
+       X509_NAME *name=NULL;
+       STACK_OF(X509_EXTENSION) *exts = NULL;
+       
+       if ((pk=EVP_PKEY_new()) == NULL)
+               goto err;
+
+       if ((x=X509_REQ_new()) == NULL)
+               goto err;
+
+       rsa=RSA_generate_key(bits,RSA_F4,callback,NULL);
+       if (!EVP_PKEY_assign_RSA(pk,rsa))
+               goto err;
+
+       rsa=NULL;
+
+       X509_REQ_set_pubkey(x,pk);
+
+       name=X509_REQ_get_subject_name(x);
+
+       /* This function creates and adds the entry, working out the
+        * correct string type and performing checks on its length.
+        * Normally we'd check the return value for errors...
+        */
+       X509_NAME_add_entry_by_txt(name,"C",
+                               MBSTRING_ASC, "UK", -1, -1, 0);
+       X509_NAME_add_entry_by_txt(name,"CN",
+                               MBSTRING_ASC, "OpenSSL Group", -1, -1, 0);
+
+#ifdef REQUEST_EXTENSIONS
+       /* Certificate requests can contain extensions, which can be used
+        * to indicate the extensions the requestor would like added to 
+        * their certificate. CAs might ignore them however or even choke
+        * if they are present.
+        */
+
+       /* For request extensions they are all packed in a single attribute.
+        * We save them in a STACK and add them all at once later...
+        */
+
+       exts = sk_X509_EXTENSION_new_null();
+       /* Standard extenions */
+
+       add_ext(exts, NID_key_usage, "critical,digitalSignature,keyEncipherment");
+
+       /* This is a typical use for request extensions: requesting a value for
+        * subject alternative name.
+        */
+
+       add_ext(exts, NID_subject_alt_name, "email:steve@openssl.org");
+
+       /* Some Netscape specific extensions */
+       add_ext(exts, NID_netscape_cert_type, "client,email");
+
+
+
+#ifdef CUSTOM_EXT
+       /* Maybe even add our own extension based on existing */
+       {
+               int nid;
+               nid = OBJ_create("1.2.3.4", "MyAlias", "My Test Alias Extension");
+               X509V3_EXT_add_alias(nid, NID_netscape_comment);
+               add_ext(x, nid, "example comment alias");
+       }
+#endif
+
+       /* Now we've created the extensions we add them to the request */
+
+       X509_REQ_add_extensions(x, exts);
+
+       sk_X509_EXTENSION_pop_free(exts, X509_EXTENSION_free);
+
+#endif
+       
+       if (!X509_REQ_sign(x,pk,EVP_md5()))
+               goto err;
+
+       *req=x;
+       *pkeyp=pk;
+       return(1);
+err:
+       return(0);
+       }
+
+/* Add extension using V3 code: we can set the config file as NULL
+ * because we wont reference any other sections.
+ */
+
+int add_ext(STACK_OF(X509_REQUEST) *sk, int nid, char *value)
+       {
+       X509_EXTENSION *ex;
+       ex = X509V3_EXT_conf_nid(NULL, NULL, nid, value);
+       if (!ex)
+               return 0;
+       sk_X509_EXTENSION_push(sk, ex);
+
+       return 1;
+       }
+