1 files changed, 67 insertions, 0 deletions
diff --git a/tpl/crypto/crypto.go b/tpl/crypto/crypto.go
new file mode 100644
index 000000000..207e4df39
--- /dev/null
+++ b/tpl/crypto/crypto.go
@@ -0,0 +1,67 @@
+// Copyright 2017 The Hugo Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package crypto
+
+import (
+	"crypto/md5"
+	"crypto/sha1"
+	"crypto/sha256"
+	"encoding/hex"
+
+	"github.com/spf13/cast"
+)
+
+// New returns a new instance of the crypto-namespaced template functions.
+func New() *Namespace {
+	return &Namespace{}
+}
+
+// Namespace provides template functions for the "crypto" namespace.
+type Namespace struct{}
+
+// Namespace returns a pointer to the current namespace instance.
+func (ns *Namespace) Namespace() *Namespace { return ns }
+
+// MD5 hashes the given input and returns its MD5 checksum.
+func (ns *Namespace) MD5(in interface{}) (string, error) {
+	conv, err := cast.ToStringE(in)
+	if err != nil {
+		return "", err
+	}
+
+	hash := md5.Sum([]byte(conv))
+	return hex.EncodeToString(hash[:]), nil
+}
+
+// SHA1 hashes the given input and returns its SHA1 checksum.
+func (ns *Namespace) SHA1(in interface{}) (string, error) {
+	conv, err := cast.ToStringE(in)
+	if err != nil {
+		return "", err
+	}
+
+	hash := sha1.Sum([]byte(conv))
+	return hex.EncodeToString(hash[:]), nil
+}
+
+// SHA256 hashes the given input and returns its SHA256 checksum.
+func (ns *Namespace) SHA256(in interface{}) (string, error) {
+	conv, err := cast.ToStringE(in)
+	if err != nil {
+		return "", err
+	}
+
+	hash := sha256.Sum256([]byte(conv))
+	return hex.EncodeToString(hash[:]), nil
+}