diff --git a/Cargo.toml b/Cargo.toml
index 6b544a38d..6cfd8e95a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -26,6 +26,7 @@ headers = ["headers-shared", "headers-um", "headers-vc"]
     "shared-ntdef",
     "shared-ntstatus",
     "shared-rpcndr",
+    "shared-sspi",
     "shared-windef",
     "shared-wtypesbase"
 ]
@@ -39,6 +40,7 @@ headers = ["headers-shared", "headers-um", "headers-vc"]
 "shared-ntdef" = ["shared-basetsd"]
 "shared-ntstatus" = ["shared-ntdef"]
 "shared-rpcndr" = []
+"shared-sspi" = ["shared-ntdef"]
 "shared-windef" = ["shared-minwindef", "um-winnt"]
 "shared-wtypesbase" = ["shared-minwindef", "shared-rpcndr", "um-winnt"]
 "headers-um" = [
@@ -46,6 +48,7 @@ headers = ["headers-shared", "headers-um", "headers-vc"]
     "um-combaseapi",
     "um-consoleapi",
     "um-minwinbase",
+    "um-ncrypt",
     "um-objidlbase",
     "um-unknwnbase",
     "um-wincon",
@@ -56,6 +59,7 @@ headers = ["headers-shared", "headers-um", "headers-vc"]
 "um-combaseapi" = ["shared-basetsd", "shared-minwindef", "shared-wtypesbase", "um-objidlbase", "ole32"]
 "um-consoleapi" = ["shared-minwindef", "um-wincon", "um-winnt", "kernel32"]
 "um-minwinbase" = ["shared-ntstatus"]
+"um-ncrypt" = ["shared-basetsd", "shared-sspi"]
 "um-objidlbase" = ["shared-guiddef", "shared-minwindef", "shared-wtypesbase", "um-unknwnbase", "um-winnt"]
 "um-unknwnbase" = ["shared-guiddef", "shared-minwindef", "um-winnt"]
 "um-wincon" = ["shared-minwindef", "shared-windef", "um-minwinbase", "um-wingdi", "um-winnt", "kernel32"]
@@ -69,7 +73,9 @@ headers = ["headers-shared", "headers-um", "headers-vc"]
 "vc-vcruntime" = []
 libraries = [
     "kernel32",
-    "ole32"
+    "ole32",
+    "ncrypt"
 ]
 "kernel32" = []
 "ole32" = []
+"ncrypt" = []
diff --git a/build.rs b/build.rs
index 5a3d82be2..31e1ed71a 100644
--- a/build.rs
+++ b/build.rs
@@ -7,7 +7,8 @@
 use std::env::var;
 const LIBS: &'static [&'static str] = &[
     "kernel32",
-    "ole32"
+    "ole32",
+    "ncrypt"
 ];
 fn main() {
     let target = var("TARGET").unwrap();
diff --git a/src/shared/mod.rs b/src/shared/mod.rs
index 1f529a354..566f06471 100644
--- a/src/shared/mod.rs
+++ b/src/shared/mod.rs
@@ -15,5 +15,6 @@
 #[cfg(feature = "shared-ntstatus")] pub mod ntstatus;
 #[cfg(feature = "shared-ntdef")] pub mod ntdef;
 #[cfg(feature = "shared-rpcndr")] pub mod rpcndr;
+#[cfg(feature = "shared-sspi")]  pub mod sspi;
 #[cfg(feature = "shared-windef")] pub mod windef;
 #[cfg(feature = "shared-wtypesbase")] pub mod wtypesbase;
diff --git a/src/shared/sspi.rs b/src/shared/sspi.rs
new file mode 100644
index 000000000..5561429b2
--- /dev/null
+++ b/src/shared/sspi.rs
@@ -0,0 +1,9 @@
+// Copyright © 2016 winapi-rs developers
+// Licensed under the Apache License, Version 2.0
+// <LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your option.
+// All files in the project carrying such notice may not be copied, modified, or distributed
+// except according to those terms.
+use shared::ntdef::LONG;
+
+pub type SECURITY_STATUS = LONG;
diff --git a/src/um/mod.rs b/src/um/mod.rs
index 279d089eb..7fdfe803c 100644
--- a/src/um/mod.rs
+++ b/src/um/mod.rs
@@ -14,3 +14,4 @@
 #[cfg(feature = "um-wincon")] pub mod wincon;
 #[cfg(feature = "um-wingdi")] pub mod wingdi;
 #[cfg(feature = "um-winnt")] pub mod winnt;
+#[cfg(feature = "um-ncrypt")] pub mod ncrypt;
diff --git a/src/um/ncrypt.rs b/src/um/ncrypt.rs
new file mode 100644
index 000000000..cd1d0f382
--- /dev/null
+++ b/src/um/ncrypt.rs
@@ -0,0 +1,13 @@
+// Copyright © 2016 winapi-rs developers
+// Licensed under the Apache License, Version 2.0
+// <LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your option.
+// All files in the project carrying such notice may not be copied, modified, or distributed
+// except according to those terms.
+use shared::basetsd::ULONG_PTR;
+use shared::sspi::SECURITY_STATUS;
+
+pub type NCRYPT_HANDLE = ULONG_PTR;
+EXTERN!{"ncrypt" "stdcall" fn NCryptFreeObject(
+    hObject: NCRYPT_HANDLE
+) -> SECURITY_STATUS}