diff --git a/OpenVPN Adapter/OpenVPNCertificate.h b/OpenVPN Adapter/OpenVPNCertificate.h
new file mode 100644
index 0000000..cc3677f
--- /dev/null
+++ b/OpenVPN Adapter/OpenVPNCertificate.h	
@@ -0,0 +1,21 @@
+//
+//  OpenVPNCertificate.h
+//  OpenVPN Adapter
+//
+//  Created by Sergey Abramchuk on 06.09.17.
+//
+//
+
+#import <Foundation/Foundation.h>
+
+@interface OpenVPNCertificate : NSObject
+
++ (nullable OpenVPNCertificate *)certificateWithPEM:(nonnull NSData *)pemData
+                                              error:(out NSError * __nullable * __nullable)error;
+
++ (nullable OpenVPNCertificate *)certificateWithDER:(nonnull NSData *)derData
+                                              error:(out NSError * __nullable * __nullable)error;
+
+- (nonnull instancetype) __unavailable init;
+
+@end
diff --git a/OpenVPN Adapter/OpenVPNCertificate.m b/OpenVPN Adapter/OpenVPNCertificate.m
new file mode 100644
index 0000000..fd09813
--- /dev/null
+++ b/OpenVPN Adapter/OpenVPNCertificate.m	
@@ -0,0 +1,54 @@
+//
+//  OpenVPNCertificate.m
+//  OpenVPN Adapter
+//
+//  Created by Sergey Abramchuk on 06.09.17.
+//
+//
+
+#import <mbedtls/x509_crt.h>
+
+#import "OpenVPNCertificate.h"
+
+@interface OpenVPNCertificate ()
+
+@property (nonatomic) mbedtls_x509_crt *crt;
+
+@end
+
+@implementation OpenVPNCertificate
+
+- (instancetype)init
+{
+    self = [super init];
+    if (self) {
+        self.crt = malloc(sizeof(mbedtls_x509_crt));
+        mbedtls_x509_crt_init(self.crt);
+    }
+    return self;
+}
+
++ (OpenVPNCertificate *)certificateWithPEM:(NSData *)pemData error:(out NSError * __nullable * __nullable)error {
+    OpenVPNCertificate *certificate = [OpenVPNCertificate new];
+    
+    // TODO: Parse PEM data
+    
+    return certificate;
+}
+
++ (OpenVPNCertificate *)certificateWithDER:(NSData *)derData error:(out NSError * __nullable * __nullable)error {
+    OpenVPNCertificate *certificate = [OpenVPNCertificate new];
+    
+    // TODO: Parse DER data
+    
+    return certificate;
+}
+
+- (void)dealloc {
+    if (self.crt) {
+        mbedtls_x509_crt_free(self.crt);
+        free(self.crt);
+    }
+}
+
+@end