diff --git a/.gitignore b/.gitignore
index b6e9ab6..9a93006 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 # SPDX-License-Identifier: Apache-2.0
+# SPDX-License-Identifier: Unlicense
 
 /target
diff --git a/Cargo.lock b/Cargo.lock
index 64cf995..432f01f 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,6 +1,6 @@
-# This file is automatically @generated by Cargo.
-# It is not intended for manual editing.
 # SPDX-License-Identifier: Apache-2.0
+# SPDX-License-Identifier: Unlicense
+
 version = 4
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index 2af4fdf..01d810d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
+# SPDX-License-Identifier: Unlicense
 
 [package]
 name = "detee-shared"
diff --git a/LICENSE b/LICENSE
index 9efa6fb..efb9808 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,338 +1,24 @@
-                    GNU GENERAL PUBLIC LICENSE
-                       Version 2, June 1991
+This is free and unencumbered software released into the public domain.
 
- Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
- <https://fsf.org/>
- Everyone is permitted to copy and distribute verbatim copies
- of this license document, but changing it is not allowed.
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
 
-                            Preamble
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
 
-  The licenses for most software are designed to take away your
-freedom to share and change it.  By contrast, the GNU General Public
-License is intended to guarantee your freedom to share and change free
-software--to make sure the software is free for all its users.  This
-General Public License applies to most of the Free Software
-Foundation's software and to any other program whose authors commit to
-using it.  (Some other Free Software Foundation software is covered by
-the GNU Lesser General Public License instead.)  You can apply it to
-your programs, too.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
 
-  When we speak of free software, we are referring to freedom, not
-price.  Our General Public Licenses are designed to make sure that you
-have the freedom to distribute copies of free software (and charge for
-this service if you wish), that you receive source code or can get it
-if you want it, that you can change the software or use pieces of it
-in new free programs; and that you know you can do these things.
-
-  To protect your rights, we need to make restrictions that forbid
-anyone to deny you these rights or to ask you to surrender the rights.
-These restrictions translate to certain responsibilities for you if you
-distribute copies of the software, or if you modify it.
-
-  For example, if you distribute copies of such a program, whether
-gratis or for a fee, you must give the recipients all the rights that
-you have.  You must make sure that they, too, receive or can get the
-source code.  And you must show them these terms so they know their
-rights.
-
-  We protect your rights with two steps: (1) copyright the software, and
-(2) offer you this license which gives you legal permission to copy,
-distribute and/or modify the software.
-
-  Also, for each author's protection and ours, we want to make certain
-that everyone understands that there is no warranty for this free
-software.  If the software is modified by someone else and passed on, we
-want its recipients to know that what they have is not the original, so
-that any problems introduced by others will not reflect on the original
-authors' reputations.
-
-  Finally, any free program is threatened constantly by software
-patents.  We wish to avoid the danger that redistributors of a free
-program will individually obtain patent licenses, in effect making the
-program proprietary.  To prevent this, we have made it clear that any
-patent must be licensed for everyone's free use or not licensed at all.
-
-  The precise terms and conditions for copying, distribution and
-modification follow.
-
-                    GNU GENERAL PUBLIC LICENSE
-   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
-
-  0. This License applies to any program or other work which contains
-a notice placed by the copyright holder saying it may be distributed
-under the terms of this General Public License.  The "Program", below,
-refers to any such program or work, and a "work based on the Program"
-means either the Program or any derivative work under copyright law:
-that is to say, a work containing the Program or a portion of it,
-either verbatim or with modifications and/or translated into another
-language.  (Hereinafter, translation is included without limitation in
-the term "modification".)  Each licensee is addressed as "you".
-
-Activities other than copying, distribution and modification are not
-covered by this License; they are outside its scope.  The act of
-running the Program is not restricted, and the output from the Program
-is covered only if its contents constitute a work based on the
-Program (independent of having been made by running the Program).
-Whether that is true depends on what the Program does.
-
-  1. You may copy and distribute verbatim copies of the Program's
-source code as you receive it, in any medium, provided that you
-conspicuously and appropriately publish on each copy an appropriate
-copyright notice and disclaimer of warranty; keep intact all the
-notices that refer to this License and to the absence of any warranty;
-and give any other recipients of the Program a copy of this License
-along with the Program.
-
-You may charge a fee for the physical act of transferring a copy, and
-you may at your option offer warranty protection in exchange for a fee.
-
-  2. You may modify your copy or copies of the Program or any portion
-of it, thus forming a work based on the Program, and copy and
-distribute such modifications or work under the terms of Section 1
-above, provided that you also meet all of these conditions:
-
-    a) You must cause the modified files to carry prominent notices
-    stating that you changed the files and the date of any change.
-
-    b) You must cause any work that you distribute or publish, that in
-    whole or in part contains or is derived from the Program or any
-    part thereof, to be licensed as a whole at no charge to all third
-    parties under the terms of this License.
-
-    c) If the modified program normally reads commands interactively
-    when run, you must cause it, when started running for such
-    interactive use in the most ordinary way, to print or display an
-    announcement including an appropriate copyright notice and a
-    notice that there is no warranty (or else, saying that you provide
-    a warranty) and that users may redistribute the program under
-    these conditions, and telling the user how to view a copy of this
-    License.  (Exception: if the Program itself is interactive but
-    does not normally print such an announcement, your work based on
-    the Program is not required to print an announcement.)
-
-These requirements apply to the modified work as a whole.  If
-identifiable sections of that work are not derived from the Program,
-and can be reasonably considered independent and separate works in
-themselves, then this License, and its terms, do not apply to those
-sections when you distribute them as separate works.  But when you
-distribute the same sections as part of a whole which is a work based
-on the Program, the distribution of the whole must be on the terms of
-this License, whose permissions for other licensees extend to the
-entire whole, and thus to each and every part regardless of who wrote it.
-
-Thus, it is not the intent of this section to claim rights or contest
-your rights to work written entirely by you; rather, the intent is to
-exercise the right to control the distribution of derivative or
-collective works based on the Program.
-
-In addition, mere aggregation of another work not based on the Program
-with the Program (or with a work based on the Program) on a volume of
-a storage or distribution medium does not bring the other work under
-the scope of this License.
-
-  3. You may copy and distribute the Program (or a work based on it,
-under Section 2) in object code or executable form under the terms of
-Sections 1 and 2 above provided that you also do one of the following:
-
-    a) Accompany it with the complete corresponding machine-readable
-    source code, which must be distributed under the terms of Sections
-    1 and 2 above on a medium customarily used for software interchange; or,
-
-    b) Accompany it with a written offer, valid for at least three
-    years, to give any third party, for a charge no more than your
-    cost of physically performing source distribution, a complete
-    machine-readable copy of the corresponding source code, to be
-    distributed under the terms of Sections 1 and 2 above on a medium
-    customarily used for software interchange; or,
-
-    c) Accompany it with the information you received as to the offer
-    to distribute corresponding source code.  (This alternative is
-    allowed only for noncommercial distribution and only if you
-    received the program in object code or executable form with such
-    an offer, in accord with Subsection b above.)
-
-The source code for a work means the preferred form of the work for
-making modifications to it.  For an executable work, complete source
-code means all the source code for all modules it contains, plus any
-associated interface definition files, plus the scripts used to
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-special exception, the source code distributed need not include
-anything that is normally distributed (in either source or binary
-form) with the major components (compiler, kernel, and so on) of the
-operating system on which the executable runs, unless that component
-itself accompanies the executable.
-
-If distribution of executable or object code is made by offering
-access to copy from a designated place, then offering equivalent
-access to copy the source code from the same place counts as
-distribution of the source code, even though third parties are not
-compelled to copy the source along with the object code.
-
-  4. You may not copy, modify, sublicense, or distribute the Program
-except as expressly provided under this License.  Any attempt
-otherwise to copy, modify, sublicense or distribute the Program is
-void, and will automatically terminate your rights under this License.
-However, parties who have received copies, or rights, from you under
-this License will not have their licenses terminated so long as such
-parties remain in full compliance.
-
-  5. You are not required to accept this License, since you have not
-signed it.  However, nothing else grants you permission to modify or
-distribute the Program or its derivative works.  These actions are
-prohibited by law if you do not accept this License.  Therefore, by
-modifying or distributing the Program (or any work based on the
-Program), you indicate your acceptance of this License to do so, and
-all its terms and conditions for copying, distributing or modifying
-the Program or works based on it.
-
-  6. Each time you redistribute the Program (or any work based on the
-Program), the recipient automatically receives a license from the
-original licensor to copy, distribute or modify the Program subject to
-these terms and conditions.  You may not impose any further
-restrictions on the recipients' exercise of the rights granted herein.
-You are not responsible for enforcing compliance by third parties to
-this License.
-
-  7. If, as a consequence of a court judgment or allegation of patent
-infringement or for any other reason (not limited to patent issues),
-conditions are imposed on you (whether by court order, agreement or
-otherwise) that contradict the conditions of this License, they do not
-excuse you from the conditions of this License.  If you cannot
-distribute so as to satisfy simultaneously your obligations under this
-License and any other pertinent obligations, then as a consequence you
-may not distribute the Program at all.  For example, if a patent
-license would not permit royalty-free redistribution of the Program by
-all those who receive copies directly or indirectly through you, then
-the only way you could satisfy both it and this License would be to
-refrain entirely from distribution of the Program.
-
-If any portion of this section is held invalid or unenforceable under
-any particular circumstance, the balance of the section is intended to
-apply and the section as a whole is intended to apply in other
-circumstances.
-
-It is not the purpose of this section to induce you to infringe any
-patents or other property right claims or to contest validity of any
-such claims; this section has the sole purpose of protecting the
-integrity of the free software distribution system, which is
-implemented by public license practices.  Many people have made
-generous contributions to the wide range of software distributed
-through that system in reliance on consistent application of that
-system; it is up to the author/donor to decide if he or she is willing
-to distribute software through any other system and a licensee cannot
-impose that choice.
-
-This section is intended to make thoroughly clear what is believed to
-be a consequence of the rest of this License.
-
-  8. If the distribution and/or use of the Program is restricted in
-certain countries either by patents or by copyrighted interfaces, the
-original copyright holder who places the Program under this License
-may add an explicit geographical distribution limitation excluding
-those countries, so that distribution is permitted only in or among
-countries not thus excluded.  In such case, this License incorporates
-the limitation as if written in the body of this License.
-
-  9. The Free Software Foundation may publish revised and/or new versions
-of the General Public License from time to time.  Such new versions will
-be similar in spirit to the present version, but may differ in detail to
-address new problems or concerns.
-
-Each version is given a distinguishing version number.  If the Program
-specifies a version number of this License which applies to it and "any
-later version", you have the option of following the terms and conditions
-either of that version or of any later version published by the Free
-Software Foundation.  If the Program does not specify a version number of
-this License, you may choose any version ever published by the Free Software
-Foundation.
-
-  10. If you wish to incorporate parts of the Program into other free
-programs whose distribution conditions are different, write to the author
-to ask for permission.  For software which is copyrighted by the Free
-Software Foundation, write to the Free Software Foundation; we sometimes
-make exceptions for this.  Our decision will be guided by the two goals
-of preserving the free status of all derivatives of our free software and
-of promoting the sharing and reuse of software generally.
-
-                            NO WARRANTY
-
-  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
-FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
-OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
-PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
-OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
-MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
-TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
-PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
-REPAIR OR CORRECTION.
-
-  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
-REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
-INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
-OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
-TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
-YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
-PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGES.
-
-                     END OF TERMS AND CONDITIONS
-
-            How to Apply These Terms to Your New Programs
-
-  If you develop a new program, and you want it to be of the greatest
-possible use to the public, the best way to achieve this is to make it
-free software which everyone can redistribute and change under these terms.
-
-  To do so, attach the following notices to the program.  It is safest
-to attach them to the start of each source file to most effectively
-convey the exclusion of warranty; and each file should have at least
-the "copyright" line and a pointer to where the full notice is found.
-
-    <one line to give the program's name and a brief idea of what it does.>
-    Copyright (C) <year>  <name of author>
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License along
-    with this program; if not, see <https://www.gnu.org/licenses/>.
-
-Also add information on how to contact you by electronic and paper mail.
-
-If the program is interactive, make it output a short notice like this
-when it starts in an interactive mode:
-
-    Gnomovision version 69, Copyright (C) year name of author
-    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
-    This is free software, and you are welcome to redistribute it
-    under certain conditions; type `show c' for details.
-
-The hypothetical commands `show w' and `show c' should show the appropriate
-parts of the General Public License.  Of course, the commands you use may
-be called something other than `show w' and `show c'; they could even be
-mouse-clicks or menu items--whatever suits your program.
-
-You should also get your employer (if you work as a programmer) or your
-school, if any, to sign a "copyright disclaimer" for the program, if
-necessary.  Here is a sample; alter the names:
-
-  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
-  `Gnomovision' (which makes passes at compilers) written by James Hacker.
-
-  <signature of Moe Ghoul>, 1 April 1989
-  Moe Ghoul, President of Vice
-
-This General Public License does not permit incorporating your program into
-proprietary programs.  If your program is a subroutine library, you may
-consider it more useful to permit linking proprietary applications with the
-library.  If this is what you want to do, use the GNU Lesser General
-Public License instead of this License.
+For more information, please refer to <https://unlicense.org/>
diff --git a/README.md b/README.md
index 5df9f54..d632f92 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,6 @@
 <!--
 SPDX-License-Identifier: Apache-2.0
+SPDX-License-Identifier: Unlicense
 -->
 
 # Shared files for projects in deTee
diff --git a/build.rs b/build.rs
index 4d79d44..5150868 100644
--- a/build.rs
+++ b/build.rs
@@ -1,4 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: Unlicense
 
 fn main() -> Result<(), Box<dyn std::error::Error>> {
     tonic_build::configure()
diff --git a/proto/sgx/app.proto b/proto/sgx/app.proto
index 9919fa7..9314c9e 100644
--- a/proto/sgx/app.proto
+++ b/proto/sgx/app.proto
@@ -1,4 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: Unlicense
 
 syntax = "proto3";
 
diff --git a/proto/sgx/dtpm.proto b/proto/sgx/dtpm.proto
index 1d1a3f6..edbf593 100644
--- a/proto/sgx/dtpm.proto
+++ b/proto/sgx/dtpm.proto
@@ -1,4 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: Unlicense
 
 syntax = "proto3";
 
diff --git a/proto/shared/common.proto b/proto/shared/common.proto
index cfad88c..e3347bc 100644
--- a/proto/shared/common.proto
+++ b/proto/shared/common.proto
@@ -1,4 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: Unlicense
 
 syntax = "proto3";
 package common_proto;
diff --git a/proto/shared/general.proto b/proto/shared/general.proto
index a58a6ee..27785a6 100644
--- a/proto/shared/general.proto
+++ b/proto/shared/general.proto
@@ -1,4 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: Unlicense
 
 syntax = "proto3";
 package general_proto;
diff --git a/proto/snp/vm.proto b/proto/snp/vm.proto
index 8391912..9b17d00 100644
--- a/proto/snp/vm.proto
+++ b/proto/snp/vm.proto
@@ -1,4 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: Unlicense
 
 syntax = "proto3";
 package vm_proto;
diff --git a/src/lib.rs b/src/lib.rs
index 4191733..34975e0 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,4 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: Unlicense
 
 pub mod sgx;
 pub mod shared;
diff --git a/src/sgx/mod.rs b/src/sgx/mod.rs
index 13aea61..63c3c69 100644
--- a/src/sgx/mod.rs
+++ b/src/sgx/mod.rs
@@ -1,4 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: Unlicense
 
 pub mod types;
 
diff --git a/src/sgx/types.rs b/src/sgx/types.rs
index 08b538d..df2b2f7 100644
--- a/src/sgx/types.rs
+++ b/src/sgx/types.rs
@@ -1,4 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: Unlicense
 
 pub mod brain;
 pub mod dtpm;
diff --git a/src/sgx/types/brain.rs b/src/sgx/types/brain.rs
index b1e7d67..a0c0e75 100644
--- a/src/sgx/types/brain.rs
+++ b/src/sgx/types/brain.rs
@@ -1,4 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: Unlicense
 
 use crate::app_proto::{daemon_message_app, AppNodeResources, DaemonMessageApp};
 use crate::app_proto::{AppResource, DaemonAuth, NewAppReq, NewAppRes};
diff --git a/src/sgx/types/dtpm.rs b/src/sgx/types/dtpm.rs
index 791b75d..9ee5a16 100644
--- a/src/sgx/types/dtpm.rs
+++ b/src/sgx/types/dtpm.rs
@@ -1,4 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: Unlicense
 
 use crate::sgx::pb::dtpm_proto;
 use bincode::{Decode, Encode};
diff --git a/src/shared/mod.rs b/src/shared/mod.rs
index 75571fe..bf71257 100644
--- a/src/shared/mod.rs
+++ b/src/shared/mod.rs
@@ -1,4 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: Unlicense
 
 pub mod pb {
     pub mod general_proto {
diff --git a/src/snp/mod.rs b/src/snp/mod.rs
index 0443b75..ed3df0c 100644
--- a/src/snp/mod.rs
+++ b/src/snp/mod.rs
@@ -1,4 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: Unlicense
 
 pub mod pb {
     pub mod vm_proto {
diff --git a/tests/dtpm-config_test.rs b/tests/dtpm-config_test.rs
index c6769f8..17e2a22 100644
--- a/tests/dtpm-config_test.rs
+++ b/tests/dtpm-config_test.rs
@@ -1,4 +1,5 @@
 // SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: Unlicense
 
 use detee_shared::sgx::types::dtpm::{compress_directory, decompress_directory, DtpmConfig};
 
diff --git a/tests/fixtures/dtpm_config.yaml b/tests/fixtures/dtpm_config.yaml
index 5c3e49d..bb1044c 100644
--- a/tests/fixtures/dtpm_config.yaml
+++ b/tests/fixtures/dtpm_config.yaml
@@ -1,4 +1,5 @@
 # SPDX-License-Identifier: Apache-2.0
+# SPDX-License-Identifier: Unlicense
 
 environments:
   - name: APP_NAME