inital commit

3 files changed, 340 insertions, 0 deletions

diff --git a/openssl/demos/x509/README b/openssl/demos/x509/README
new file mode 100644
index 0000000..88f9d6c
--- /dev/null
+++ b/openssl/demos/x509/README
@@ -0,0 +1,3 @@
+This directory contains examples of how to contruct
+various X509 structures. Certificates, certificate requests
+and CRLs.
diff --git a/openssl/demos/x509/mkcert.c b/openssl/demos/x509/mkcert.c
new file mode 100644
index 0000000..1e62146
--- /dev/null
+++ b/openssl/demos/x509/mkcert.c
@@ -0,0 +1,169 @@
+/*
+ * 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>
+#ifndef OPENSSL_NO_ENGINE
+# include <openssl/engine.h>
+#endif
+
+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);
+
+#ifndef OPENSSL_NO_ENGINE
+    ENGINE_cleanup();
+#endif
+    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, 2);
+    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_sha1()))
+        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/openssl/demos/x509/mkreq.c b/openssl/demos/x509/mkreq.c
new file mode 100644
index 0000000..4d2ad79
--- /dev/null
+++ b/openssl/demos/x509/mkreq.c
@@ -0,0 +1,168 @@
+/*
+ * Certificate request creation. Demonstrates some request related
+ * operations.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <openssl/pem.h>
+#include <openssl/conf.h>
+#include <openssl/x509.h>
+#include <openssl/x509v3.h>
+#ifndef OPENSSL_NO_ENGINE
+# include <openssl/engine.h>
+#endif
+
+int mkreq(X509_REQ **x509p, EVP_PKEY **pkeyp, int bits, int serial, int days);
+int add_ext(STACK_OF(X509_EXTENSION) *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);
+
+#ifndef OPENSSL_NO_ENGINE
+    ENGINE_cleanup();
+#endif
+    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_sha1()))
+        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_EXTENSION) *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;
+}