diff --git a/container/sign.go b/container/sign.go
index eafd93c..f538f2d 100644
--- a/container/sign.go
+++ b/container/sign.go
@@ -135,3 +135,60 @@ func (m ListRequest) ReadSignedData(p []byte) (int, error) {
 
 	return off, nil
 }
+
+// SignedData returns payload bytes of the request.
+func (m GetExtendedACLRequest) SignedData() ([]byte, error) {
+	return service.SignedDataFromReader(m)
+}
+
+// SignedDataSize returns payload size of the request.
+func (m GetExtendedACLRequest) SignedDataSize() int {
+	return m.GetID().Size()
+}
+
+// ReadSignedData copies payload bytes to passed buffer.
+//
+// If the Request size is insufficient, io.ErrUnexpectedEOF returns.
+func (m GetExtendedACLRequest) ReadSignedData(p []byte) (int, error) {
+	if len(p) < m.SignedDataSize() {
+		return 0, io.ErrUnexpectedEOF
+	}
+
+	var off int
+
+	off += copy(p[off:], m.GetID().Bytes())
+
+	return off, nil
+}
+
+// SignedData returns payload bytes of the request.
+func (m SetExtendedACLRequest) SignedData() ([]byte, error) {
+	return service.SignedDataFromReader(m)
+}
+
+// SignedDataSize returns payload size of the request.
+func (m SetExtendedACLRequest) SignedDataSize() int {
+	return 0 +
+		m.GetID().Size() +
+		len(m.GetEACL()) +
+		len(m.GetSignature())
+}
+
+// ReadSignedData copies payload bytes to passed buffer.
+//
+// If the Request size is insufficient, io.ErrUnexpectedEOF returns.
+func (m SetExtendedACLRequest) ReadSignedData(p []byte) (int, error) {
+	if len(p) < m.SignedDataSize() {
+		return 0, io.ErrUnexpectedEOF
+	}
+
+	var off int
+
+	off += copy(p[off:], m.GetID().Bytes())
+
+	off += copy(p[off:], m.GetEACL())
+
+	off += copy(p[off:], m.GetSignature())
+
+	return off, nil
+}
diff --git a/container/sign_test.go b/container/sign_test.go
index d9b7d26..d04a698 100644
--- a/container/sign_test.go
+++ b/container/sign_test.go
@@ -108,6 +108,50 @@ func TestRequestSign(t *testing.T) {
 				},
 			},
 		},
+		{ // GetExtendedACLRequest
+			constructor: func() sigType {
+				return new(GetExtendedACLRequest)
+			},
+			payloadCorrupt: []func(sigType){
+				func(s sigType) {
+					req := s.(*GetExtendedACLRequest)
+
+					id := req.GetID()
+					id[0]++
+
+					req.SetID(id)
+				},
+			},
+		},
+		{ // SetExtendedACLRequest
+			constructor: func() sigType {
+				return new(SetExtendedACLRequest)
+			},
+			payloadCorrupt: []func(sigType){
+				func(s sigType) {
+					req := s.(*SetExtendedACLRequest)
+
+					id := req.GetID()
+					id[0]++
+
+					req.SetID(id)
+				},
+				func(s sigType) {
+					req := s.(*SetExtendedACLRequest)
+
+					req.SetEACL(
+						append(req.GetEACL(), 1),
+					)
+				},
+				func(s sigType) {
+					req := s.(*SetExtendedACLRequest)
+
+					req.SetSignature(
+						append(req.GetSignature(), 1),
+					)
+				},
+			},
+		},
 	}
 
 	for _, item := range items {