diff --git a/repos/libports/lib/import/import-jitterentropy.mk b/repos/libports/lib/import/import-jitterentropy.mk
new file mode 100644
index 000000000..ec214073a
--- /dev/null
+++ b/repos/libports/lib/import/import-jitterentropy.mk
@@ -0,0 +1,15 @@
+ifeq ($(filter-out $(SPECS),x86_32),)
+	TARGET_CPUARCH=x86_32
+else ifeq ($(filter-out $(SPECS),x86_64),)
+	TARGET_CPUARCH=x86_64
+else ifeq ($(filter-out $(SPECS),arm_v6),)
+	TARGET_CPUARCH=arm_v6
+else ifeq ($(filter-out $(SPECS),arm_v7),)
+	TARGET_CPUARCH=arm_v7
+endif
+
+INC_DIR += $(call select_from_ports,jitterentropy)/include/jitterentropy
+INC_DIR += $(REP_DIR)/src/lib/jitterentropy \
+           $(REP_DIR)/src/lib/jitterentropy/$(TARGET_CPUARCH)
+
+CC_OPT += -DJITTERENTROPY_GENODE
diff --git a/repos/libports/lib/mk/arm_v6/jitterentropy.mk b/repos/libports/lib/mk/arm_v6/jitterentropy.mk
new file mode 100644
index 000000000..edfe702a0
--- /dev/null
+++ b/repos/libports/lib/mk/arm_v6/jitterentropy.mk
@@ -0,0 +1,5 @@
+INC_DIR += $(REP_DIR)/src/lib/jitterentropy/arm_v6
+
+SPECS += perf_counter
+
+include $(REP_DIR)/lib/mk/jitterentropy.inc
diff --git a/repos/libports/lib/mk/arm_v7/jitterentropy.mk b/repos/libports/lib/mk/arm_v7/jitterentropy.mk
new file mode 100644
index 000000000..fde867573
--- /dev/null
+++ b/repos/libports/lib/mk/arm_v7/jitterentropy.mk
@@ -0,0 +1,5 @@
+INC_DIR += $(REP_DIR)/src/lib/jitterentropy/arm_v7
+
+SPECS += perf_counter
+
+include $(REP_DIR)/lib/mk/jitterentropy.inc
diff --git a/repos/libports/lib/mk/jitterentropy.inc b/repos/libports/lib/mk/jitterentropy.inc
new file mode 100644
index 000000000..f2efd4ead
--- /dev/null
+++ b/repos/libports/lib/mk/jitterentropy.inc
@@ -0,0 +1,14 @@
+JENT_CONTRIB_DIR := $(call select_from_ports,jitterentropy)
+
+INC_DIR += $(JENT_CONTRIB_DIR)/include/jitterentropy \
+           $(REP_DIR)/src/lib/jitterentropy
+
+SRC_C  = jitterentropy-base.c
+SRC_CC = jitterentropy-base-genode.cc
+
+CC_OPT += -DJITTERENTROPY_GENODE
+
+CC_OLEVEL := -O0
+
+vpath %.c  $(JENT_CONTRIB_DIR)/src/lib/jitterentropy
+vpath %.cc $(REP_DIR)/src/lib/jitterentropy
diff --git a/repos/libports/lib/mk/x86_32/jitterentropy.mk b/repos/libports/lib/mk/x86_32/jitterentropy.mk
new file mode 100644
index 000000000..69444a005
--- /dev/null
+++ b/repos/libports/lib/mk/x86_32/jitterentropy.mk
@@ -0,0 +1,3 @@
+INC_DIR += $(REP_DIR)/src/lib/jitterentropy/x86_32
+
+include $(REP_DIR)/lib/mk/jitterentropy.inc
diff --git a/repos/libports/lib/mk/x86_64/jitterentropy.mk b/repos/libports/lib/mk/x86_64/jitterentropy.mk
new file mode 100644
index 000000000..02c9d88aa
--- /dev/null
+++ b/repos/libports/lib/mk/x86_64/jitterentropy.mk
@@ -0,0 +1,3 @@
+INC_DIR += $(REP_DIR)/src/lib/jitterentropy/x86_64
+
+include $(REP_DIR)/lib/mk/jitterentropy.inc
diff --git a/repos/libports/ports/jitterentropy.hash b/repos/libports/ports/jitterentropy.hash
new file mode 100644
index 000000000..a92744f43
--- /dev/null
+++ b/repos/libports/ports/jitterentropy.hash
@@ -0,0 +1 @@
+7dbc3c0143b0312290895d91ccfa97e6a6e2ae3f
diff --git a/repos/libports/ports/jitterentropy.port b/repos/libports/ports/jitterentropy.port
new file mode 100644
index 000000000..19480903c
--- /dev/null
+++ b/repos/libports/ports/jitterentropy.port
@@ -0,0 +1,24 @@
+LICENSE   := BSD
+VERSION   := 20140411
+DOWNLOADS := jitterentropy.archive
+
+URL(jitterentropy) := http://www.chronox.de/jent/jitterentropy-$(VERSION).tar.bz2
+SHA(jitterentropy) := a072ed4788b9de49bef5d339d61eaa8e88547cb3
+DIR(jitterentropy) := src/lib/jitterentropy
+
+DIRS := include/jitterentropy
+DIR_CONTENT(include/jitterentropy) := $(addprefix src/lib/jitterentropy/,\
+                                                  jitterentropy.h)
+
+PATCHES   := src/lib/jitterentropy/jitterentropy_h.patch
+PATCH_OPT := -p1 -d src/lib/jitterentropy
+
+#
+# Just to make sure that the compiler will use the right header files
+# we delete the local copy from the source directory after the files
+# were copied to the include directory.
+#
+default: rm_header
+rm_header: _dirs
+	@$(MSG_PREFIX)"remove header files from source directory "
+	$(VERBOSE)rm src/lib/jitterentropy/jitterentropy.h
diff --git a/repos/libports/src/lib/jitterentropy/arm_v6/jitterentropy-base-genode-nstime.h b/repos/libports/src/lib/jitterentropy/arm_v6/jitterentropy-base-genode-nstime.h
new file mode 100644
index 000000000..840cb25e0
--- /dev/null
+++ b/repos/libports/src/lib/jitterentropy/arm_v6/jitterentropy-base-genode-nstime.h
@@ -0,0 +1,24 @@
+/*
+ * \brief  Time backend for jitterentropy library
+ * \author Josef Soentgen
+ * \date   2014-08-18
+ */
+
+/*
+ * Copyright (C) 2014 Genode Labs GmbH
+ *
+ * This file is part of the Genode OS framework, which is distributed
+ * under the terms of the GNU General Public License version 2.
+ */
+
+#ifndef _JITTERENTROPY_ARM_V6_BASE_GENODE_NSTIME_H_
+#define _JITTERENTROPY_ARM_V6_BASE_GENODE_NSTIME_H_
+
+static inline void jent_get_nstime(__u64 *out)
+{
+	uint32_t t;
+	asm volatile("mrc p15, 0, %0, c15, c12, 1" : "=r"(t));
+	*out = t;
+}
+
+#endif /* _JITTERENTROPY_ARM_V6_BASE_GENODE_NSTIME_H */
diff --git a/repos/libports/src/lib/jitterentropy/arm_v7/jitterentropy-base-genode-nstime.h b/repos/libports/src/lib/jitterentropy/arm_v7/jitterentropy-base-genode-nstime.h
new file mode 100644
index 000000000..c5972ef1d
--- /dev/null
+++ b/repos/libports/src/lib/jitterentropy/arm_v7/jitterentropy-base-genode-nstime.h
@@ -0,0 +1,24 @@
+/*
+ * \brief  Time backend for jitterentropy library
+ * \author Josef Soentgen
+ * \date   2014-08-18
+ */
+
+/*
+ * Copyright (C) 2014 Genode Labs GmbH
+ *
+ * This file is part of the Genode OS framework, which is distributed
+ * under the terms of the GNU General Public License version 2.
+ */
+
+#ifndef _JITTERENTROPY_ARM_V7_BASE_GENODE_NSTIME_H_
+#define _JITTERENTROPY_ARM_V7_BASE_GENODE_NSTIME_H_
+
+static inline void jent_get_nstime(__u64 *out)
+{
+	uint32_t t;
+	asm volatile("mrc p15, 0, %0, c9, c13, 0" : "=r"(t));
+	*out = t;
+}
+
+#endif /* _JITTERENTROPY_ARM_V7_BASE_GENODE_NSTIME_H */
diff --git a/repos/libports/src/lib/jitterentropy/jitterentropy-base-genode.cc b/repos/libports/src/lib/jitterentropy/jitterentropy-base-genode.cc
new file mode 100644
index 000000000..9c1300c5c
--- /dev/null
+++ b/repos/libports/src/lib/jitterentropy/jitterentropy-base-genode.cc
@@ -0,0 +1,36 @@
+/*
+ * \brief  Genode base for jitterentropy
+ * \author Josef Soentgen
+ * \date   2014-08-18
+ */
+
+/*
+ * Copyright (C) 2014 Genode Labs GmbH
+ *
+ * This file is part of the Genode OS framework, which is distributed
+ * under the terms of the GNU General Public License version 2.
+ */
+
+/* Genode includes */
+#include <base/env.h>
+
+/* local includes */
+#include <jitterentropy-base-genode.h>
+
+
+void *jent_zalloc(size_t len)
+{
+	return Genode::env()->heap()->alloc(len);
+}
+
+
+void jent_zfree(void *ptr, unsigned int len)
+{
+	Genode::env()->heap()->free(ptr, len);
+}
+
+
+void *memcpy(void *dest, const void *src, size_t n)
+{
+	return Genode::memcpy(dest, src, n);
+}
diff --git a/repos/libports/src/lib/jitterentropy/jitterentropy-base-genode.h b/repos/libports/src/lib/jitterentropy/jitterentropy-base-genode.h
new file mode 100644
index 000000000..449541440
--- /dev/null
+++ b/repos/libports/src/lib/jitterentropy/jitterentropy-base-genode.h
@@ -0,0 +1,52 @@
+/*
+ * \brief  Genode base for jitterentropy
+ * \author Josef Soentgen
+ * \date   2014-08-18
+ */
+
+/*
+ * Copyright (C) 2014 Genode Labs GmbH
+ *
+ * This file is part of the Genode OS framework, which is distributed
+ * under the terms of the GNU General Public License version 2.
+ */
+
+#ifndef _JITTERENTROPY_BASE_GENODE_H_
+#define _JITTERENTROPY_BASE_GENODE_H_
+
+/* needed type definitions */
+#include <base/fixed_stdint.h>
+
+typedef __SIZE_TYPE__   size_t;
+typedef genode_uint32_t uint32_t;
+typedef genode_uint64_t uint64_t;
+typedef uint32_t        __u32;
+typedef uint64_t        __u64;
+
+#ifndef __cplusplus
+#define NULL (void*)0
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <jitterentropy-base-genode-nstime.h>
+
+void *jent_zalloc(size_t len);
+void  jent_zfree(void *ptr, unsigned int len);
+
+static inline int jent_fips_enabled(void) { return 0; }
+
+static inline __u64 rol64(__u64 word, unsigned int shift)
+{
+	return (word << shift) | (word >> (64 - shift));
+}
+
+void *memcpy(void *dest, const void *src, size_t n);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _JITTERENTROPY_BASE_GENODE_H_ */
diff --git a/repos/libports/src/lib/jitterentropy/jitterentropy_h.patch b/repos/libports/src/lib/jitterentropy/jitterentropy_h.patch
new file mode 100644
index 000000000..1d97dabe8
--- /dev/null
+++ b/repos/libports/src/lib/jitterentropy/jitterentropy_h.patch
@@ -0,0 +1,18 @@
+--- a/jitterentropy.h	2014-04-07 21:07:13.000000000 +0200
++++ b/jitterentropy.h	2014-08-18 14:42:32.609235231 +0200
+@@ -42,11 +42,15 @@
+ #ifndef _JITTERENTROPY_H
+ #define _JITTERENTROPY_H
+ 
++#ifdef JITTERENTROPY_GENODE
++#include <jitterentropy-base-genode.h>
++#else
+ #ifdef __KERNEL__
+ #include "jitterentropy-base-kernel.h"
+ #else
+ #include "jitterentropy-base-user.h"
+ #endif /* __KERNEL__ */
++#endif
+ 
+ /* Statistical data from the entropy source */
+ struct entropy_stat {
diff --git a/repos/libports/src/lib/jitterentropy/x86_32/jitterentropy-base-genode-nstime.h b/repos/libports/src/lib/jitterentropy/x86_32/jitterentropy-base-genode-nstime.h
new file mode 100644
index 000000000..c6291b7aa
--- /dev/null
+++ b/repos/libports/src/lib/jitterentropy/x86_32/jitterentropy-base-genode-nstime.h
@@ -0,0 +1,24 @@
+/*
+ * \brief  Time backend for jitterentropy library
+ * \author Josef Soentgen
+ * \date   2014-08-18
+ */
+
+/*
+ * Copyright (C) 2014 Genode Labs GmbH
+ *
+ * This file is part of the Genode OS framework, which is distributed
+ * under the terms of the GNU General Public License version 2.
+ */
+
+#ifndef _JITTERENTROPY_X86_32_BASE_GENODE_NSTIME_H_
+#define _JITTERENTROPY_X86_32_BASE_GENODE_NSTIME_H_
+
+static inline void jent_get_nstime(__u64 *out)
+{
+       uint64_t t;
+       __asm__ __volatile__ ( "rdtsc" : "=A" (t));
+       *out = t;
+}
+
+#endif /* _JITTERENTROPY_X86_32_BASE_GENODE_NSTIME_H */
diff --git a/repos/libports/src/lib/jitterentropy/x86_64/jitterentropy-base-genode-nstime.h b/repos/libports/src/lib/jitterentropy/x86_64/jitterentropy-base-genode-nstime.h
new file mode 100644
index 000000000..5c5912cf1
--- /dev/null
+++ b/repos/libports/src/lib/jitterentropy/x86_64/jitterentropy-base-genode-nstime.h
@@ -0,0 +1,24 @@
+/*
+ * \brief  Time backend for jitterentropy library
+ * \author Josef Soentgen
+ * \date   2014-08-18
+ */
+
+/*
+ * Copyright (C) 2014 Genode Labs GmbH
+ *
+ * This file is part of the Genode OS framework, which is distributed
+ * under the terms of the GNU General Public License version 2.
+ */
+
+#ifndef _JITTERENTROPY_X86_64_BASE_GENODE_NSTIME_H_
+#define _JITTERENTROPY_X86_64_BASE_GENODE_NSTIME_H_
+
+static inline void jent_get_nstime(__u64 *out)
+{
+	uint32_t lo, hi;
+	__asm__ __volatile__ ( "rdtsc" : "=a" (lo), "=d" (hi));
+	*out = (uint64_t)hi << 32 | lo;
+}
+
+#endif /* _JITTERENTROPY_X86_64_BASE_GENODE_NSTIME_H */
diff --git a/repos/libports/src/test/libports/jitterentropy/target.mk b/repos/libports/src/test/libports/jitterentropy/target.mk
new file mode 100644
index 000000000..d9e97fb65
--- /dev/null
+++ b/repos/libports/src/test/libports/jitterentropy/target.mk
@@ -0,0 +1,5 @@
+TARGET = test-jitterentropy
+LIBS   = libc jitterentropy
+SRC_CC = main.cc
+
+vpath main.cc $(PRG_DIR)/..