diff --git ./configure ./configure
index fd1dde7..7c79eaa 100755
--- ./configure
+++ ./configure
@@ -141,8 +141,8 @@ cat >conftest.c <<EOF
 #include <Qt/qglobal.h>
 
 int main(){
-  printf("\nThe Versions of the used libraries are:\n\t%s\n\tQT: %s\n",
-	 OPENSSL_VERSION_TEXT, QT_VERSION_STR );
+  printf("\nThe Versions of the used libraries are:\n\t%s 0x%lxL\n\tQT: %s\n",
+	 OPENSSL_VERSION_TEXT, OPENSSL_VERSION_NUMBER, QT_VERSION_STR );
   if (QT_VERSION < 0x040001) {
 	printf("You need Qt 4 or higher\n");
 	return 1;
diff --git ./lib/pki_x509.cpp ./lib/pki_x509.cpp
index 9b21a27..84d8513 100644
--- ./lib/pki_x509.cpp
+++ ./lib/pki_x509.cpp
@@ -339,8 +339,9 @@ void pki_x509::writeDefault(const QString fname)
 void pki_x509::writeCert(const QString fname, bool PEM, bool append)
 {
 	FILE *fp;
-	char *_a = "a", *_w="w", *p = _w;
-	if (append) p=_a;
+	const char *p = "w";
+	if (append)
+		p = "a";
 	fp = fopen(fname.toAscii(), p);
 	if (fp != NULL) {
 		if (cert){
diff --git ./lib/x509rev.cpp ./lib/x509rev.cpp
index 3af4b44..aa60dee 100644
--- ./lib/x509rev.cpp
+++ ./lib/x509rev.cpp
@@ -7,16 +7,23 @@
 
 #include "x509rev.h"
 
-#if OPENSSL_VERSION_NUMBER >= 0x00908000L
-#define X509_REVOKED_dup(x5r) \
-	ASN1_dup_of (X509_REVOKED, i2d_X509_REVOKED, d2i_X509_REVOKED, x5r)
 
-#else
-#define X509_REVOKED_dup(x5r) (X509_REVOKED *)ASN1_dup( \
-	(int (*)(...))i2d_X509_REVOKED, \
-	(char *(*)(...))d2i_X509_REVOKED, \
-	(char *)x5r)
-#endif
+static X509_REVOKED *X509_REVOKED_dup(const X509_REVOKED *n)
+{
+        int len;
+        X509_REVOKED *ret;
+	unsigned char *buf, *p;
+	const unsigned char *cp;
+
+        len = i2d_X509_REVOKED((X509_REVOKED *)n, NULL);
+	buf = (unsigned char *)OPENSSL_malloc(len);
+        p = buf;
+        i2d_X509_REVOKED((X509_REVOKED *)n, &p);
+        cp = buf;
+        ret = d2i_X509_REVOKED(NULL, &cp, len);
+        OPENSSL_free(buf);
+        return(ret);
+}
 
 x509rev::x509rev()
 {
@@ -25,7 +32,7 @@ x509rev::x509rev()
 
 x509rev::x509rev(const X509_REVOKED *n)
 {
-	rev = X509_REVOKED_dup((X509_REVOKED *)n);
+	rev = X509_REVOKED_dup(n);
 }
 
 x509rev::x509rev(const x509rev &n)
@@ -43,7 +50,7 @@ x509rev &x509rev::set(const X509_REVOKED *n)
 {
 	if (rev != NULL)
 		X509_REVOKED_free(rev);
-	rev = X509_REVOKED_dup((X509_REVOKED *)n);
+	rev = X509_REVOKED_dup(n);
 	return *this;
 }
 
diff --git ./widgets/ExportCert.cpp ./widgets/ExportCert.cpp
index 1069e4b..6159dcc 100644
--- ./widgets/ExportCert.cpp
+++ ./widgets/ExportCert.cpp
@@ -46,7 +46,7 @@ void ExportCert::on_fileBut_clicked()
 
 void ExportCert::on_exportFormat_activated(int)
 {
-	char *suffix[] = { "crt", "crt", "crt", "crt", "cer",
+	const char *suffix[] = { "crt", "crt", "crt", "crt", "cer",
 		"p7b", "p7b", "p7b", "p7b", "p12", "p12", "pem", "pem" };
 	int selected = exportFormat->currentIndex();
 	QString fn = filename->text();
diff --git ./widgets/ExportDer.cpp ./widgets/ExportDer.cpp
index 8826b7e..f03c686 100644
--- ./widgets/ExportDer.cpp
+++ ./widgets/ExportDer.cpp
@@ -39,7 +39,7 @@ void ExportDer::on_fileBut_clicked()
 
 void ExportDer::on_exportFormat_activated(int)
 {
-	char *suffix[] = { "pem", "der" };
+	const char *suffix[] = { "pem", "der" };
 	int selected = exportFormat->currentIndex();
 	QString fn = filename->text();
 	QString nfn = fn.left(fn.lastIndexOf('.')+1) + suffix[selected];
diff --git ./widgets/ExportKey.cpp ./widgets/ExportKey.cpp
index ecf0598..f2e7de1 100644
--- ./widgets/ExportKey.cpp
+++ ./widgets/ExportKey.cpp
@@ -65,7 +65,7 @@ void ExportKey::canEncrypt()
 
 void ExportKey::on_exportFormat_activated(int c)
 {
-	char *suffix[] = { "pem", "der" };
+	const char *suffix[] = { "pem", "der" };
 
 	QString fn = filename->text();
 	QString nfn = fn.left(fn.lastIndexOf('.')+1) + suffix[c];
diff --git ./widgets/hashBox.cpp ./widgets/hashBox.cpp
index cb4fa3a..3a22a82 100644
--- ./widgets/hashBox.cpp
+++ ./widgets/hashBox.cpp
@@ -17,7 +17,7 @@ int hashBox::default_md = 2; /* SHA1 */
 #endif
 
 static struct {
-	char *name;
+	const char *name;
 	const EVP_MD *md;
 } hashalgos[] = {
 	{ "MD 2", EVP_md2() },