diff --git a/manifests/proxy/formpost.pp b/manifests/proxy/formpost.pp
index 0943658a..d26575c2 100644
--- a/manifests/proxy/formpost.pp
+++ b/manifests/proxy/formpost.pp
@@ -1,6 +1,12 @@
 #
 # Configure swift formpost.
 #
+# == Parameters
+#
+#  [*allowed_digests*]
+#    The digest algorithm(s) supported for generating signatures.
+#    Optional. Defaults to $facts['os_service_default'].
+#
 # == Dependencies
 #
 # == Examples
@@ -15,11 +21,14 @@
 #
 # Copyright 2012 eNovance licensing@enovance.com
 #
-class swift::proxy::formpost() {
+class swift::proxy::formpost(
+  $allowed_digests = $facts['os_service_default'],
+) {
 
   include swift::deps
 
   swift_proxy_config {
-    'filter:formpost/use': value => 'egg:swift#formpost';
+    'filter:formpost/use':             value => 'egg:swift#formpost';
+    'filter:formpost/allowed_digests': value => join(any2array($allowed_digests), ' ');
   }
 }
diff --git a/manifests/proxy/tempurl.pp b/manifests/proxy/tempurl.pp
index 092b27b2..ee77b802 100644
--- a/manifests/proxy/tempurl.pp
+++ b/manifests/proxy/tempurl.pp
@@ -28,6 +28,10 @@
 #    Example: ['x-object-meta-public-*'] or 'x-object-meta-public-*'
 #    Optional. Defaults to $facts['os_service_default'].
 #
+#  [*allowed_digests*]
+#    The digest algorithm(s) supported for generating signatures.
+#    Optional. Defaults to $facts['os_service_default'].
+#
 # == Examples
 #
 #  class {'swift::proxy::tempurl':
@@ -50,22 +54,18 @@ class swift::proxy::tempurl (
   $incoming_allow_headers  = $facts['os_service_default'],
   $outgoing_remove_headers = $facts['os_service_default'],
   $outgoing_allow_headers  = $facts['os_service_default'],
+  $allowed_digests         = $facts['os_service_default'],
 ) {
 
   include swift::deps
 
-  $methods_real                 = join(any2array($methods), ' ')
-  $incoming_remove_headers_real = join(any2array($incoming_remove_headers), ' ')
-  $incoming_allow_headers_real  = join(any2array($incoming_allow_headers), ' ')
-  $outgoing_remove_headers_real = join(any2array($outgoing_remove_headers), ' ')
-  $outgoing_allow_headers_real  = join(any2array($outgoing_allow_headers), ' ')
-
   swift_proxy_config {
     'filter:tempurl/use':                     value => 'egg:swift#tempurl';
-    'filter:tempurl/methods':                 value => $methods_real;
-    'filter:tempurl/incoming_remove_headers': value => $incoming_remove_headers_real;
-    'filter:tempurl/incoming_allow_headers':  value => $incoming_allow_headers_real;
-    'filter:tempurl/outgoing_remove_headers': value => $outgoing_remove_headers_real;
-    'filter:tempurl/outgoing_allow_headers':  value => $outgoing_allow_headers_real;
+    'filter:tempurl/methods':                 value => join(any2array($methods), ' ');
+    'filter:tempurl/incoming_remove_headers': value => join(any2array($incoming_remove_headers), ' ');
+    'filter:tempurl/incoming_allow_headers':  value => join(any2array($incoming_allow_headers), ' ');
+    'filter:tempurl/outgoing_remove_headers': value => join(any2array($outgoing_remove_headers), ' ');
+    'filter:tempurl/outgoing_allow_headers':  value => join(any2array($outgoing_allow_headers), ' ');
+    'filter:tempurl/allowed_digests':         value => join(any2array($allowed_digests), ' ');
   }
 }
diff --git a/releasenotes/notes/allowed_digests-1b12b2f0483c4c68.yaml b/releasenotes/notes/allowed_digests-1b12b2f0483c4c68.yaml
new file mode 100644
index 00000000..eb86e116
--- /dev/null
+++ b/releasenotes/notes/allowed_digests-1b12b2f0483c4c68.yaml
@@ -0,0 +1,7 @@
+---
+features:
+  - |
+    The following classes now support the new ``allowed_digests`` parameter.
+
+    - ``swift::proxy::formpost``
+    - ``swift::proxy::tempurl``
diff --git a/spec/classes/swift_proxy_formpost_spec.rb b/spec/classes/swift_proxy_formpost_spec.rb
index c6f4e30a..c7f4e366 100644
--- a/spec/classes/swift_proxy_formpost_spec.rb
+++ b/spec/classes/swift_proxy_formpost_spec.rb
@@ -2,7 +2,20 @@ require 'spec_helper'
 
 describe 'swift::proxy::formpost' do
   shared_examples 'swift::proxy::formpost' do
-    it { should contain_swift_proxy_config('filter:formpost/use').with_value('egg:swift#formpost') }
+    context 'with defaults' do
+      it { should contain_swift_proxy_config('filter:formpost/use').with_value('egg:swift#formpost') }
+      it { should contain_swift_proxy_config('filter:formpost/allowed_digests').with_value('<SERVICE DEFAULT>') }
+    end
+
+    context 'with parameters' do
+      let :params do
+        {
+          :allowed_digests => ['sha1', 'sha256', 'sha512']
+        }
+      end
+
+      it { should contain_swift_proxy_config('filter:formpost/allowed_digests').with_value('sha1 sha256 sha512') }
+    end
   end
 
   on_supported_os({
diff --git a/spec/classes/swift_proxy_tempurl_spec.rb b/spec/classes/swift_proxy_tempurl_spec.rb
index 19fdf53b..cc158fb4 100644
--- a/spec/classes/swift_proxy_tempurl_spec.rb
+++ b/spec/classes/swift_proxy_tempurl_spec.rb
@@ -2,51 +2,69 @@ require 'spec_helper'
 
 describe 'swift::proxy::tempurl' do
   shared_examples 'swift::proxy::tempurl' do
-    it { is_expected.to contain_swift_proxy_config('filter:tempurl/use').with_value('egg:swift#tempurl') }
 
-    ['methods',
-     'incoming_remove_headers',
-     'incoming_allow_headers',
-     'outgoing_remove_headers',
-     'outgoing_allow_headers' ].each do |h|
-       it { is_expected.to contain_swift_proxy_config("filter:tempurl/#{h}").with_value('<SERVICE DEFAULT>') }
-     end
+    context 'with defaults' do
+      it { is_expected.to contain_swift_proxy_config('filter:tempurl/use').with_value('egg:swift#tempurl') }
 
-     context "when params are set" do
-       let :params do {
-         'methods' => ['GET','HEAD','PUT'],
-         'incoming_remove_headers' => ['x-foo','x-bar-*'],
-         'incoming_allow_headers'  => ['x-foo','x-bar-*'],
-         'outgoing_remove_headers' => ['x-foo','x-bar-*'],
-         'outgoing_allow_headers'  => ['x-foo','x-bar-*'],
-       } end
-
-       it { is_expected.to contain_swift_proxy_config('filter:tempurl/methods').with_value('GET HEAD PUT') }
-       ['incoming_remove_headers',
+      [
+        'methods',
+        'incoming_remove_headers',
         'incoming_allow_headers',
         'outgoing_remove_headers',
-        'outgoing_allow_headers' ].each do |h|
-          it { is_expected.to contain_swift_proxy_config("filter:tempurl/#{h}").with_value('x-foo x-bar-*') }
-        end
+        'outgoing_allow_headers',
+        'allowed_digests'
+      ].each do |h|
+        it { is_expected.to contain_swift_proxy_config("filter:tempurl/#{h}").with_value('<SERVICE DEFAULT>') }
+      end
+    end
 
-        describe 'when params are not array' do
-          let :params do {
-            'methods' => 'GET HEAD PUT',
-            'incoming_remove_headers' => 'x-foo x-bar-*',
-            'incoming_allow_headers'  => 'x-foo x-bar-*',
-            'outgoing_remove_headers' => 'x-foo x-bar-*',
-            'outgoing_allow_headers'  => 'x-foo x-bar-*',
-          } end
+    context 'when params are set' do
+      let :params do
+        {
+          :methods                 => ['GET','HEAD','PUT'],
+          :incoming_remove_headers => ['x-foo','x-bar-*'],
+          :incoming_allow_headers  => ['x-foo','x-bar-*'],
+          :outgoing_remove_headers => ['x-foo','x-bar-*'],
+          :outgoing_allow_headers  => ['x-foo','x-bar-*'],
+          :allowed_digests         => ['sha1', 'sha256', 'sha512'],
+        }
+      end
 
-          it { is_expected.to contain_swift_proxy_config('filter:tempurl/methods').with_value('GET HEAD PUT') }
-          ['incoming_remove_headers',
-           'incoming_allow_headers',
-           'outgoing_remove_headers',
-           'outgoing_allow_headers' ].each do |h|
-             it { is_expected.to contain_swift_proxy_config("filter:tempurl/#{h}").with_value('x-foo x-bar-*') }
-           end
-        end
-     end
+      it { is_expected.to contain_swift_proxy_config('filter:tempurl/methods').with_value('GET HEAD PUT') }
+      [
+        'incoming_remove_headers',
+        'incoming_allow_headers',
+        'outgoing_remove_headers',
+        'outgoing_allow_headers'
+      ].each do |h|
+        it { is_expected.to contain_swift_proxy_config("filter:tempurl/#{h}").with_value('x-foo x-bar-*') }
+      end
+      it { is_expected.to contain_swift_proxy_config('filter:tempurl/allowed_digests').with_value('sha1 sha256 sha512') }
+    end
+
+    context 'when params are not array' do
+      let :params do
+        {
+          :methods                 => 'GET HEAD PUT',
+          :incoming_remove_headers => 'x-foo x-bar-*',
+          :incoming_allow_headers  => 'x-foo x-bar-*',
+          :outgoing_remove_headers => 'x-foo x-bar-*',
+          :outgoing_allow_headers  => 'x-foo x-bar-*',
+          :allowed_digests         => 'sha1 sha256 sha512',
+        }
+      end
+
+      it { is_expected.to contain_swift_proxy_config('filter:tempurl/methods').with_value('GET HEAD PUT') }
+      [
+        'incoming_remove_headers',
+        'incoming_allow_headers',
+        'outgoing_remove_headers',
+        'outgoing_allow_headers',
+      ].each do |h|
+        it { is_expected.to contain_swift_proxy_config("filter:tempurl/#{h}").with_value('x-foo x-bar-*') }
+      end
+      it { is_expected.to contain_swift_proxy_config('filter:tempurl/allowed_digests').with_value('sha1 sha256 sha512') }
+    end
   end
 
   on_supported_os({