first commit, SM2-DSA only

demos/maurice/loadkeys.c

@@ -0,0 +1,72 @@
+/* NOCW */
+/*
+        Please read the README file for condition of use, before
+        using this software.
+
+        Maurice Gittens  <mgittens@gits.nl>   January 1997
+
+*/
+
+#include <unistd.h>
+#include <stdio.h>
+#include <netinet/in.h>
+#include <fcntl.h>
+#include <strings.h>
+#include <stdlib.h>
+
+#include <openssl/rsa.h>
+#include <openssl/evp.h>
+#include <openssl/objects.h>
+#include <openssl/x509.h>
+#include <openssl/err.h>
+#include <openssl/pem.h>
+#include <openssl/ssl.h>
+
+EVP_PKEY * ReadPublicKey(const char *certfile)
+{
+  FILE *fp = fopen (certfile, "r");   
+  X509 *x509;
+  EVP_PKEY *pkey;
+
+  if (!fp) 
+     return NULL; 
+
+  x509 = PEM_read_X509(fp, NULL, 0, NULL);
+
+  if (x509 == NULL) 
+  {  
+     ERR_print_errors_fp (stderr);
+     return NULL;   
+  }
+
+  fclose (fp);
+  
+  pkey=X509_extract_key(x509);
+
+  X509_free(x509);
+
+  if (pkey == NULL) 
+     ERR_print_errors_fp (stderr);
+
+  return pkey; 
+}
+
+EVP_PKEY *ReadPrivateKey(const char *keyfile)
+{
+	FILE *fp = fopen(keyfile, "r");
+	EVP_PKEY *pkey;
+
+	if (!fp)
+		return NULL;
+
+	pkey = PEM_read_PrivateKey(fp, NULL, 0, NULL);
+
+	fclose (fp);
+
+  	if (pkey == NULL) 
+		ERR_print_errors_fp (stderr);   
+
+	return pkey;
+}
+
+