about summary refs log tree commit diff
path: root/net
diff options
context:
space:
mode:
authorVincent Ambo <tazjin@google.com>2019-12-21T01·24+0000
committerVincent Ambo <tazjin@google.com>2019-12-21T01·24+0000
commitec826db87aa53ecb8f82741583fc7479e1784c25 (patch)
treeea4b495b1ed16deb79533edb586480f14095839e /net
parent1a281d3bb93fa46e74fb5e5b79a5da38ba48d628 (diff)
parent14462d5ecd4b404c105aa2f8c57e500841a330b3 (diff)
merge(alcoholic_jwt): Integrate at //net/alcoholic_jwt r/269
Diffstat (limited to 'net')
-rw-r--r--net/alcoholic_jwt/.gitignore4
-rw-r--r--net/alcoholic_jwt/Cargo.toml16
-rw-r--r--net/alcoholic_jwt/LICENSE674
-rw-r--r--net/alcoholic_jwt/README.md62
-rw-r--r--net/alcoholic_jwt/src/lib.rs451
-rw-r--r--net/alcoholic_jwt/src/tests.rs61
6 files changed, 1268 insertions, 0 deletions
diff --git a/net/alcoholic_jwt/.gitignore b/net/alcoholic_jwt/.gitignore
new file mode 100644
index 000000000000..143b1ca01474
--- /dev/null
+++ b/net/alcoholic_jwt/.gitignore
@@ -0,0 +1,4 @@
+
+/target/
+**/*.rs.bk
+Cargo.lock
diff --git a/net/alcoholic_jwt/Cargo.toml b/net/alcoholic_jwt/Cargo.toml
new file mode 100644
index 000000000000..40db6b7bd1cd
--- /dev/null
+++ b/net/alcoholic_jwt/Cargo.toml
@@ -0,0 +1,16 @@
+[package]
+name = "alcoholic_jwt"
+description = "Library for validation of RS256 JWTs"
+version = "1.0.0"
+authors = ["Vincent Ambo <vincent@aprila.no>"]
+keywords = ["jwt", "token", "jwks"]
+categories = ["authentication"]
+license = "GPL-3.0-or-later"
+repository = "https://github.com/aprilabank/alcoholic_jwt"
+
+[dependencies]
+base64 = "0.10"
+openssl = "0.10"
+serde = "1.0"
+serde_derive = "1.0"
+serde_json = "1.0"
diff --git a/net/alcoholic_jwt/LICENSE b/net/alcoholic_jwt/LICENSE
new file mode 100644
index 000000000000..94a9ed024d38
--- /dev/null
+++ b/net/alcoholic_jwt/LICENSE
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  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
+them 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 prevent others from denying you
+these rights or asking you to surrender the rights.  Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must pass on to the recipients the same
+freedoms that you received.  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.
+
+  Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
+
+  For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software.  For both users' and
+authors' sake, the GPL requires that modified versions be marked as
+changed, so that their problems will not be attributed erroneously to
+authors of previous versions.
+
+  Some devices are designed to deny users access to install or run
+modified versions of the software inside them, although the manufacturer
+can do so.  This is fundamentally incompatible with the aim of
+protecting users' freedom to change the software.  The systematic
+pattern of such abuse occurs in the area of products for individuals to
+use, which is precisely where it is most unacceptable.  Therefore, we
+have designed this version of the GPL to prohibit the practice for those
+products.  If such problems arise substantially in other domains, we
+stand ready to extend this provision to those domains in future versions
+of the GPL, as needed to protect the freedom of users.
+
+  Finally, every program is threatened constantly by software patents.
+States should not allow patents to restrict development and use of
+software on general-purpose computers, but in those that do, we wish to
+avoid the special danger that patents applied to a free program could
+make it effectively proprietary.  To prevent this, the GPL assures that
+patents cannot be used to render the program non-free.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                       TERMS AND CONDITIONS
+
+  0. Definitions.
+
+  "This License" refers to version 3 of the GNU General Public License.
+
+  "Copyright" also means copyright-like laws that apply to other kinds of
+works, such as semiconductor masks.
+
+  "The Program" refers to any copyrightable work licensed under this
+License.  Each licensee is addressed as "you".  "Licensees" and
+"recipients" may be individuals or organizations.
+
+  To "modify" a work means to copy from or adapt all or part of the work
+in a fashion requiring copyright permission, other than the making of an
+exact copy.  The resulting work is called a "modified version" of the
+earlier work or a work "based on" the earlier work.
+
+  A "covered work" means either the unmodified Program or a work based
+on the Program.
+
+  To "propagate" a work means to do anything with it that, without
+permission, would make you directly or secondarily liable for
+infringement under applicable copyright law, except executing it on a
+computer or modifying a private copy.  Propagation includes copying,
+distribution (with or without modification), making available to the
+public, and in some countries other activities as well.
+
+  To "convey" a work means any kind of propagation that enables other
+parties to make or receive copies.  Mere interaction with a user through
+a computer network, with no transfer of a copy, is not conveying.
+
+  An interactive user interface displays "Appropriate Legal Notices"
+to the extent that it includes a convenient and prominently visible
+feature that (1) displays an appropriate copyright notice, and (2)
+tells the user that there is no warranty for the work (except to the
+extent that warranties are provided), that licensees may convey the
+work under this License, and how to view a copy of this License.  If
+the interface presents a list of user commands or options, such as a
+menu, a prominent item in the list meets this criterion.
+
+  1. Source Code.
+
+  The "source code" for a work means the preferred form of the work
+for making modifications to it.  "Object code" means any non-source
+form of a work.
+
+  A "Standard Interface" means an interface that either is an official
+standard defined by a recognized standards body, or, in the case of
+interfaces specified for a particular programming language, one that
+is widely used among developers working in that language.
+
+  The "System Libraries" of an executable work include anything, other
+than the work as a whole, that (a) is included in the normal form of
+packaging a Major Component, but which is not part of that Major
+Component, and (b) serves only to enable use of the work with that
+Major Component, or to implement a Standard Interface for which an
+implementation is available to the public in source code form.  A
+"Major Component", in this context, means a major essential component
+(kernel, window system, and so on) of the specific operating system
+(if any) on which the executable work runs, or a compiler used to
+produce the work, or an object code interpreter used to run it.
+
+  The "Corresponding Source" for a work in object code form means all
+the source code needed to generate, install, and (for an executable
+work) run the object code and to modify the work, including scripts to
+control those activities.  However, it does not include the work's
+System Libraries, or general-purpose tools or generally available free
+programs which are used unmodified in performing those activities but
+which are not part of the work.  For example, Corresponding Source
+includes interface definition files associated with source files for
+the work, and the source code for shared libraries and dynamically
+linked subprograms that the work is specifically designed to require,
+such as by intimate data communication or control flow between those
+subprograms and other parts of the work.
+
+  The Corresponding Source need not include anything that users
+can regenerate automatically from other parts of the Corresponding
+Source.
+
+  The Corresponding Source for a work in source code form is that
+same work.
+
+  2. Basic Permissions.
+
+  All rights granted under this License are granted for the term of
+copyright on the Program, and are irrevocable provided the stated
+conditions are met.  This License explicitly affirms your unlimited
+permission to run the unmodified Program.  The output from running a
+covered work is covered by this License only if the output, given its
+content, constitutes a covered work.  This License acknowledges your
+rights of fair use or other equivalent, as provided by copyright law.
+
+  You may make, run and propagate covered works that you do not
+convey, without conditions so long as your license otherwise remains
+in force.  You may convey covered works to others for the sole purpose
+of having them make modifications exclusively for you, or provide you
+with facilities for running those works, provided that you comply with
+the terms of this License in conveying all material for which you do
+not control copyright.  Those thus making or running the covered works
+for you must do so exclusively on your behalf, under your direction
+and control, on terms that prohibit them from making any copies of
+your copyrighted material outside their relationship with you.
+
+  Conveying under any other circumstances is permitted solely under
+the conditions stated below.  Sublicensing is not allowed; section 10
+makes it unnecessary.
+
+  3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+
+  No covered work shall be deemed part of an effective technological
+measure under any applicable law fulfilling obligations under article
+11 of the WIPO copyright treaty adopted on 20 December 1996, or
+similar laws prohibiting or restricting circumvention of such
+measures.
+
+  When you convey a covered work, you waive any legal power to forbid
+circumvention of technological measures to the extent such circumvention
+is effected by exercising rights under this License with respect to
+the covered work, and you disclaim any intention to limit operation or
+modification of the work as a means of enforcing, against the work's
+users, your or third parties' legal rights to forbid circumvention of
+technological measures.
+
+  4. Conveying Verbatim Copies.
+
+  You may convey 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;
+keep intact all notices stating that this License and any
+non-permissive terms added in accord with section 7 apply to the code;
+keep intact all notices of the absence of any warranty; and give all
+recipients a copy of this License along with the Program.
+
+  You may charge any price or no price for each copy that you convey,
+and you may offer support or warranty protection for a fee.
+
+  5. Conveying Modified Source Versions.
+
+  You may convey a work based on the Program, or the modifications to
+produce it from the Program, in the form of source code under the
+terms of section 4, provided that you also meet all of these conditions:
+
+    a) The work must carry prominent notices stating that you modified
+    it, and giving a relevant date.
+
+    b) The work must carry prominent notices stating that it is
+    released under this License and any conditions added under section
+    7.  This requirement modifies the requirement in section 4 to
+    "keep intact all notices".
+
+    c) You must license the entire work, as a whole, under this
+    License to anyone who comes into possession of a copy.  This
+    License will therefore apply, along with any applicable section 7
+    additional terms, to the whole of the work, and all its parts,
+    regardless of how they are packaged.  This License gives no
+    permission to license the work in any other way, but it does not
+    invalidate such permission if you have separately received it.
+
+    d) If the work has interactive user interfaces, each must display
+    Appropriate Legal Notices; however, if the Program has interactive
+    interfaces that do not display Appropriate Legal Notices, your
+    work need not make them do so.
+
+  A compilation of a covered work with other separate and independent
+works, which are not by their nature extensions of the covered work,
+and which are not combined with it such as to form a larger program,
+in or on a volume of a storage or distribution medium, is called an
+"aggregate" if the compilation and its resulting copyright are not
+used to limit the access or legal rights of the compilation's users
+beyond what the individual works permit.  Inclusion of a covered work
+in an aggregate does not cause this License to apply to the other
+parts of the aggregate.
+
+  6. Conveying Non-Source Forms.
+
+  You may convey a covered work in object code form under the terms
+of sections 4 and 5, provided that you also convey the
+machine-readable Corresponding Source under the terms of this License,
+in one of these ways:
+
+    a) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by the
+    Corresponding Source fixed on a durable physical medium
+    customarily used for software interchange.
+
+    b) Convey the object code in, or embodied in, a physical product
+    (including a physical distribution medium), accompanied by a
+    written offer, valid for at least three years and valid for as
+    long as you offer spare parts or customer support for that product
+    model, to give anyone who possesses the object code either (1) a
+    copy of the Corresponding Source for all the software in the
+    product that is covered by this License, on a durable physical
+    medium customarily used for software interchange, for a price no
+    more than your reasonable cost of physically performing this
+    conveying of source, or (2) access to copy the
+    Corresponding Source from a network server at no charge.
+
+    c) Convey individual copies of the object code with a copy of the
+    written offer to provide the Corresponding Source.  This
+    alternative is allowed only occasionally and noncommercially, and
+    only if you received the object code with such an offer, in accord
+    with subsection 6b.
+
+    d) Convey the object code by offering access from a designated
+    place (gratis or for a charge), and offer equivalent access to the
+    Corresponding Source in the same way through the same place at no
+    further charge.  You need not require recipients to copy the
+    Corresponding Source along with the object code.  If the place to
+    copy the object code is a network server, the Corresponding Source
+    may be on a different server (operated by you or a third party)
+    that supports equivalent copying facilities, provided you maintain
+    clear directions next to the object code saying where to find the
+    Corresponding Source.  Regardless of what server hosts the
+    Corresponding Source, you remain obligated to ensure that it is
+    available for as long as needed to satisfy these requirements.
+
+    e) Convey the object code using peer-to-peer transmission, provided
+    you inform other peers where the object code and Corresponding
+    Source of the work are being offered to the general public at no
+    charge under subsection 6d.
+
+  A separable portion of the object code, whose source code is excluded
+from the Corresponding Source as a System Library, need not be
+included in conveying the object code work.
+
+  A "User Product" is either (1) a "consumer product", which means any
+tangible personal property which is normally used for personal, family,
+or household purposes, or (2) anything designed or sold for incorporation
+into a dwelling.  In determining whether a product is a consumer product,
+doubtful cases shall be resolved in favor of coverage.  For a particular
+product received by a particular user, "normally used" refers to a
+typical or common use of that class of product, regardless of the status
+of the particular user or of the way in which the particular user
+actually uses, or expects or is expected to use, the product.  A product
+is a consumer product regardless of whether the product has substantial
+commercial, industrial or non-consumer uses, unless such uses represent
+the only significant mode of use of the product.
+
+  "Installation Information" for a User Product means any methods,
+procedures, authorization keys, or other information required to install
+and execute modified versions of a covered work in that User Product from
+a modified version of its Corresponding Source.  The information must
+suffice to ensure that the continued functioning of the modified object
+code is in no case prevented or interfered with solely because
+modification has been made.
+
+  If you convey an object code work under this section in, or with, or
+specifically for use in, a User Product, and the conveying occurs as
+part of a transaction in which the right of possession and use of the
+User Product is transferred to the recipient in perpetuity or for a
+fixed term (regardless of how the transaction is characterized), the
+Corresponding Source conveyed under this section must be accompanied
+by the Installation Information.  But this requirement does not apply
+if neither you nor any third party retains the ability to install
+modified object code on the User Product (for example, the work has
+been installed in ROM).
+
+  The requirement to provide Installation Information does not include a
+requirement to continue to provide support service, warranty, or updates
+for a work that has been modified or installed by the recipient, or for
+the User Product in which it has been modified or installed.  Access to a
+network may be denied when the modification itself materially and
+adversely affects the operation of the network or violates the rules and
+protocols for communication across the network.
+
+  Corresponding Source conveyed, and Installation Information provided,
+in accord with this section must be in a format that is publicly
+documented (and with an implementation available to the public in
+source code form), and must require no special password or key for
+unpacking, reading or copying.
+
+  7. Additional Terms.
+
+  "Additional permissions" are terms that supplement the terms of this
+License by making exceptions from one or more of its conditions.
+Additional permissions that are applicable to the entire Program shall
+be treated as though they were included in this License, to the extent
+that they are valid under applicable law.  If additional permissions
+apply only to part of the Program, that part may be used separately
+under those permissions, but the entire Program remains governed by
+this License without regard to the additional permissions.
+
+  When you convey a copy of a covered work, you may at your option
+remove any additional permissions from that copy, or from any part of
+it.  (Additional permissions may be written to require their own
+removal in certain cases when you modify the work.)  You may place
+additional permissions on material, added by you to a covered work,
+for which you have or can give appropriate copyright permission.
+
+  Notwithstanding any other provision of this License, for material you
+add to a covered work, you may (if authorized by the copyright holders of
+that material) supplement the terms of this License with terms:
+
+    a) Disclaiming warranty or limiting liability differently from the
+    terms of sections 15 and 16 of this License; or
+
+    b) Requiring preservation of specified reasonable legal notices or
+    author attributions in that material or in the Appropriate Legal
+    Notices displayed by works containing it; or
+
+    c) Prohibiting misrepresentation of the origin of that material, or
+    requiring that modified versions of such material be marked in
+    reasonable ways as different from the original version; or
+
+    d) Limiting the use for publicity purposes of names of licensors or
+    authors of the material; or
+
+    e) Declining to grant rights under trademark law for use of some
+    trade names, trademarks, or service marks; or
+
+    f) Requiring indemnification of licensors and authors of that
+    material by anyone who conveys the material (or modified versions of
+    it) with contractual assumptions of liability to the recipient, for
+    any liability that these contractual assumptions directly impose on
+    those licensors and authors.
+
+  All other non-permissive additional terms are considered "further
+restrictions" within the meaning of section 10.  If the Program as you
+received it, or any part of it, contains a notice stating that it is
+governed by this License along with a term that is a further
+restriction, you may remove that term.  If a license document contains
+a further restriction but permits relicensing or conveying under this
+License, you may add to a covered work material governed by the terms
+of that license document, provided that the further restriction does
+not survive such relicensing or conveying.
+
+  If you add terms to a covered work in accord with this section, you
+must place, in the relevant source files, a statement of the
+additional terms that apply to those files, or a notice indicating
+where to find the applicable terms.
+
+  Additional terms, permissive or non-permissive, may be stated in the
+form of a separately written license, or stated as exceptions;
+the above requirements apply either way.
+
+  8. Termination.
+
+  You may not propagate or modify a covered work except as expressly
+provided under this License.  Any attempt otherwise to propagate or
+modify it is void, and will automatically terminate your rights under
+this License (including any patent licenses granted under the third
+paragraph of section 11).
+
+  However, if you cease all violation of this License, then your
+license from a particular copyright holder is reinstated (a)
+provisionally, unless and until the copyright holder explicitly and
+finally terminates your license, and (b) permanently, if the copyright
+holder fails to notify you of the violation by some reasonable means
+prior to 60 days after the cessation.
+
+  Moreover, your license from a particular copyright holder is
+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that
+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+  Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License.  If your rights have been terminated and not permanently
+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
+
+  9. Acceptance Not Required for Having Copies.
+
+  You are not required to accept this License in order to receive or
+run a copy of the Program.  Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
+nothing other than this License grants you permission to propagate or
+modify any covered work.  These actions infringe copyright if you do
+not accept this License.  Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+  10. Automatic Licensing of Downstream Recipients.
+
+  Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License.  You are not responsible
+for enforcing compliance by third parties with this License.
+
+  An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations.  If propagation of a covered
+work results from an entity transaction, each party to that
+transaction who receives a copy of the work also receives whatever
+licenses to the work the party's predecessor in interest had or could
+give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if
+the predecessor has it or can get it with reasonable efforts.
+
+  You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License.  For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
+
+  A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based.  The
+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version.  For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
+this License.
+
+  Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+  In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement).  To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+  If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If 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 convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU 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 that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  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.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+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.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     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
+state 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 3 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 <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program 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, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU 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.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
diff --git a/net/alcoholic_jwt/README.md b/net/alcoholic_jwt/README.md
new file mode 100644
index 000000000000..b9ff57df4be3
--- /dev/null
+++ b/net/alcoholic_jwt/README.md
@@ -0,0 +1,62 @@
+alcoholic_jwt
+=============
+
+[![Build Status](https://travis-ci.org/aprilabank/alcoholic_jwt.svg?branch=master)](https://travis-ci.org/aprilabank/alcoholic_jwt)
+
+This is a library for **validation** of **RS256** JWTs using keys from
+a JWKS. Nothing more, nothing less.
+
+RS256 is the most commonly used asymmetric signature mechanism for
+JWTs, encountered in for example [Google][]'s or [Aprila][]'s APIs.
+
+The name of the library stems from the potential side-effects of
+trying to use the other Rust libraries that are made for similar
+purposes.
+
+## Usage overview
+
+You are retrieving JWTs from some authentication provider that uses
+`RS256` signatures and provides its public keys in [JWKS][] format.
+
+Example for a token that provides the key ID used for signing in the
+[`kid` claim][]:
+
+```rust
+extern crate alcoholic_jwt;
+
+use alcoholic_jwt::{JWKS, Validation, validate, token_kid};
+
+// The function implied here would usually perform an HTTP-GET
+// on the JWKS-URL for an authentication provider and deserialize
+// the result into the `alcoholic_jwt::JWKS`-struct.
+let jwks: JWKS = jwks_fetching_function();
+
+let token: String = some_token_fetching_function();
+
+// Several types of built-in validations are provided:
+let validations = vec![
+  Validation::Issuer("auth.test.aprila.no".into()),
+  Validation::SubjectPresent,
+];
+
+// If a JWKS contains multiple keys, the correct KID first
+// needs to be fetched from the token headers.
+let kid = token_kid(&token)
+    .expect("Failed to decode token headers")
+    .expect("No 'kid' claim present in token");
+
+let jwk = jwks.find(&kid).expect("Specified key not found in set");
+
+validate(token, jwk, validations).expect("Token validation has failed!");
+```
+
+## Under the hood
+
+This library aims to only use trustworthy off-the-shelf components to
+do the work. Cryptographic operations are provided by the `openssl`
+crate, JSON-serialisation is provided by `serde_json`.
+
+[Google]: https://www.google.com/
+[Aprila]: https://www.aprila.no/
+[JWKS]: https://tools.ietf.org/html/rfc7517
+[`kid` claim]: https://tools.ietf.org/html/rfc7515#section-4.1.4
diff --git a/net/alcoholic_jwt/src/lib.rs b/net/alcoholic_jwt/src/lib.rs
new file mode 100644
index 000000000000..c98bee61505d
--- /dev/null
+++ b/net/alcoholic_jwt/src/lib.rs
@@ -0,0 +1,451 @@
+// Copyright (C) 2018  Aprila Bank ASA
+//
+// alcoholic_jwt 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 3 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 <http://www.gnu.org/licenses/>.
+
+//! Implements a library for for **validation** of **RS256** JWTs
+//! using keys from a JWKS. Nothing more, nothing less.
+//!
+//! The name of the library stems from the potential side-effects of
+//! trying to use the other Rust libraries that are made for similar
+//! purposes.
+//!
+//! This library is specifically aimed at developers that consume
+//! tokens from services which provide their RSA public keys in
+//! [JWKS][] format.
+//!
+//! ## Usage example (token with `kid`-claim)
+//!
+//! ```rust
+//! # extern crate serde_json;
+//! extern crate alcoholic_jwt;
+//!
+//! use alcoholic_jwt::{JWKS, Validation, validate, token_kid};
+//!
+//! # fn some_token_fetching_function() -> &'static str {
+//! #   "eyJraWQiOiI4ckRxOFB3MEZaY2FvWFdURVZRbzcrVGYyWXpTTDFmQnhOS1BDZWJhYWk0PSIsImFsZyI6IlJTMjU2IiwidHlwIjoiSldUIn0.eyJpc3MiOiJhdXRoLnRlc3QuYXByaWxhLm5vIiwiaWF0IjoxNTM2MDUwNjkzLCJleHAiOjE1MzYwNTQyOTMsInN1YiI6IjQyIiwiZXh0Ijoic21va2V0ZXN0IiwicHJ2IjoiYXJpc3RpIiwic2NwIjoicHJvY2VzcyJ9.gOLsv98109qLkmRK6Dn7WWRHLW7o8W78WZcWvFZoxPLzVO0qvRXXRLYc9h5chpfvcWreLZ4f1cOdvxv31_qnCRSQQPOeQ7r7hj_sPEDzhKjk-q2aoNHaGGJg1vabI--9EFkFsGQfoS7UbMMssS44dgR68XEnKtjn0Vys-Vzbvz_CBSCH6yQhRLik2SU2jR2L7BoFvh4LGZ6EKoQWzm8Z-CHXLGLUs4Hp5aPhF46dGzgAzwlPFW4t9G4DciX1uB4vv1XnfTc5wqJch6ltjKMde1GZwLR757a8dJSBcmGWze3UNE2YH_VLD7NCwH2kkqr3gh8rn7lWKG4AUIYPxsw9CB"
+//! # }
+//!
+//! # fn jwks_fetching_function() -> JWKS {
+//! #   let jwks_json = "{\"keys\":[{\"kty\":\"RSA\",\"alg\":\"RS256\",\"use\":\"sig\",\"kid\":\"8rDq8Pw0FZcaoXWTEVQo7+Tf2YzSL1fBxNKPCebaai4=\",\"n\":\"l4UTgk1zr-8C8utt0E57DtBV6qqAPWzVRrIuQS2j0_hp2CviaNl5XzGRDnB8gwk0Hx95YOhJupAe6RNq5ok3fDdxL7DLvppJNRLz3Ag9CsmDLcbXgNEQys33fBJaPw1v3GcaFC4tisU5p-o1f5RfWwvwdBtdBfGiwT1GRvbc5sFx6M4iYjg9uv1lNKW60PqSJW4iDYrfqzZmB0zF1SJ0BL_rnQZ1Wi_UkFmNe9arM8W9tI9T3Ie59HITFuyVSTCt6qQEtSfa1e5PiBaVuV3qoFI2jPBiVZQ6LPGBWEDyz4QtrHLdECPPoTF30NN6TSVwwlRbCuUUrdNdXdjYe2dMFQ\",\"e\":\"DhaD5zC7mzaDvHO192wKT_9sfsVmdy8w8T8C9VG17_b1jG2srd3cmc6Ycw-0blDf53Wrpi9-KGZXKHX6_uIuJK249WhkP7N1SHrTJxO0sUJ8AhK482PLF09Qtu6cUfJqY1X1y1S2vACJZItU4Vjr3YAfiVGQXeA8frAf7Sm4O1CBStCyg6yCcIbGojII0jfh2vSB-GD9ok1F69Nmk-R-bClyqMCV_Oq-5a0gqClVS8pDyGYMgKTww2RHgZaFSUcG13KeLMQsG2UOB2OjSC8FkOXK00NBlAjU3d0Vv-IamaLIszO7FQBY3Oh0uxNOvIE9ofQyCOpB-xIK6V9CTTphxw\"}]}";
+//! #   serde_json::from_str(jwks_json).unwrap()
+//! # }
+//! #
+//! // The function implied here would usually perform an HTTP-GET
+//! // on the JWKS-URL for an authentication provider and deserialize
+//! // the result into the `alcoholic_jwt::JWKS`-struct.
+//! let jwks: JWKS = jwks_fetching_function();
+//!
+//! let token = some_token_fetching_function();
+//!
+//! // Several types of built-in validations are provided:
+//! let validations = vec![
+//!   Validation::Issuer("auth.test.aprila.no".into()),
+//!   Validation::SubjectPresent,
+//! ];
+//!
+//! // If a JWKS contains multiple keys, the correct KID first
+//! // needs to be fetched from the token headers.
+//! let kid = token_kid(&token)
+//!     .expect("Failed to decode token headers")
+//!     .expect("No 'kid' claim present in token");
+//!
+//! let jwk = jwks.find(&kid).expect("Specified key not found in set");
+//!
+//! validate(token, jwk, validations).expect("Token validation has failed!");
+//! ```
+//!
+//! [JWKS]: https://tools.ietf.org/html/rfc7517
+
+#[macro_use] extern crate serde_derive;
+
+extern crate base64;
+extern crate openssl;
+extern crate serde;
+extern crate serde_json;
+
+use base64::{URL_SAFE_NO_PAD, Config, DecodeError};
+use openssl::bn::BigNum;
+use openssl::error::ErrorStack;
+use openssl::hash::MessageDigest;
+use openssl::pkey::{Public, PKey};
+use openssl::rsa::Rsa;
+use openssl::sign::Verifier;
+use serde::de::DeserializeOwned;
+use serde_json::Value;
+use std::time::{UNIX_EPOCH, Duration, SystemTime};
+
+#[cfg(test)]
+mod tests;
+
+/// URL-safe character set without padding that allows trailing bits,
+/// which appear in some JWT implementations.
+///
+/// Note: The functions on `base64::Config` are not marked `const`,
+/// and the constructors are not exported, which is why this is
+/// implemented as a function.
+fn jwt_forgiving() -> Config {
+    URL_SAFE_NO_PAD.decode_allow_trailing_bits(true)
+}
+
+/// JWT algorithm used. The only supported algorithm is currently
+/// RS256.
+#[derive(Clone, Deserialize, Debug)]
+enum KeyAlgorithm { RS256 }
+
+/// Type of key contained in a JWT. The only supported key type is
+/// currently RSA.
+#[derive(Clone, Deserialize, Debug)]
+enum KeyType { RSA }
+
+/// Representation of a single JSON Web Key. See [RFC
+/// 7517](https://tools.ietf.org/html/rfc7517#section-4).
+#[allow(dead_code)] // kty & alg only constrain deserialisation, but aren't used
+#[derive(Clone, Debug, Deserialize)]
+pub struct JWK {
+    kty: KeyType,
+    alg: Option<KeyAlgorithm>,
+    kid: Option<String>,
+
+    // Shared modulus
+    n: String,
+
+    // Public key exponent
+    e: String,
+}
+
+/// Representation of a set of JSON Web Keys. See [RFC
+/// 7517](https://tools.ietf.org/html/rfc7517#section-5).
+#[derive(Clone, Debug, Deserialize)]
+pub struct JWKS {
+    // This is a vector instead of some kind of map-like structure
+    // because key IDs are in fact optional.
+    //
+    // Technically having multiple keys with the same KID would not
+    // violate the JWKS-definition either, but behaviour in that case
+    // is unspecified.
+    keys: Vec<JWK>,
+}
+
+impl JWKS {
+    /// Attempt to find a JWK by its key ID.
+    pub fn find(&self, kid: &str) -> Option<&JWK> {
+        self.keys.iter().find(|jwk| jwk.kid == Some(kid.into()))
+    }
+}
+
+/// Representation of an undecoded JSON Web Token. See [RFC
+/// 7519](https://tools.ietf.org/html/rfc7519).
+struct JWT<'a> (&'a str);
+
+/// Representation of a decoded and validated JSON Web Token.
+///
+/// Specific claim fields are only decoded internally in the library
+/// for validation purposes, while it is generally up to the consumer
+/// of the validated JWT what structure they would like to impose.
+pub struct ValidJWT {
+    /// JOSE header of the JSON Web Token. Certain fields are
+    /// guaranteed to be present in this header, consult section 5 of
+    /// RFC7519 for more information.
+    pub headers: Value,
+
+    /// Claims (i.e. primary data) contained in the JSON Web Token.
+    /// While there are several registered and recommended headers
+    /// (consult section 4.1 of RFC7519), the presence of no field is
+    /// guaranteed in these.
+    pub claims: Value,
+}
+
+/// Possible token claim validations. This enumeration only covers
+/// common use-cases, for other types of validations the user is
+/// encouraged to inspect the claim set manually.
+pub enum Validation {
+    /// Validate that the issuer ("iss") claim matches a specified
+    /// value.
+    Issuer(String),
+
+    /// Validate that the audience ("aud") claim matches a specified
+    /// value.
+    Audience(String),
+
+    /// Validate that a subject value is present.
+    SubjectPresent,
+
+    /// Validate that the expiry time of the token ("exp"-claim) has
+    /// not yet been reached.
+    NotExpired,
+}
+
+/// Possible results of a token validation.
+#[derive(Debug)]
+pub enum ValidationError {
+    /// Invalid number of token components (not a JWT?)
+    InvalidComponents,
+
+    /// Token segments had invalid base64-encoding.
+    InvalidBase64(DecodeError),
+
+    /// Decoding of the provided JWK failed.
+    InvalidJWK,
+
+    /// Signature validation failed, i.e. because of a non-matching
+    /// public key.
+    InvalidSignature,
+
+    /// An OpenSSL operation failed along the way at a point at which
+    /// a more specific error variant could not be constructed.
+    OpenSSL(ErrorStack),
+
+    /// JSON decoding into a provided type failed.
+    JSON(serde_json::Error),
+
+    /// One or more claim validations failed. This variant contains
+    /// human-readable validation errors.
+    InvalidClaims(Vec<&'static str>),
+}
+
+type JWTResult<T> = Result<T, ValidationError>;
+
+impl From<ErrorStack> for ValidationError {
+    fn from(err: ErrorStack) -> Self { ValidationError::OpenSSL(err) }
+}
+
+impl From<serde_json::Error> for ValidationError {
+    fn from(err: serde_json::Error) -> Self { ValidationError::JSON(err) }
+}
+
+impl From<DecodeError> for ValidationError {
+    fn from(err: DecodeError) -> Self { ValidationError::InvalidBase64(err) }
+}
+
+/// Attempt to extract the `kid`-claim out of a JWT's header claims.
+///
+/// This function is normally used when a token provider has multiple
+/// public keys in rotation at the same time that could all still have
+/// valid tokens issued under them.
+///
+/// This is only safe if the key set containing the currently allowed
+/// key IDs is fetched from a trusted source.
+pub fn token_kid(token: &str) -> JWTResult<Option<String>> {
+    // Fetch the header component of the JWT by splitting it out and
+    // dismissing the rest.
+    let parts: Vec<&str> = token.splitn(2, '.').collect();
+    if parts.len() != 2 {
+        return Err(ValidationError::InvalidComponents);
+    }
+
+    // Decode only the first part of the token into a specialised
+    // representation:
+    #[derive(Deserialize)]
+    struct KidOnly {
+        kid: Option<String>,
+    }
+
+    let kid_only: KidOnly = deserialize_part(parts[0])?;
+
+    Ok(kid_only.kid)
+}
+
+/// Validate the signature of a JSON Web Token and optionally apply
+/// claim validations. Signatures are always verified before claims,
+/// and if a signature verification passes *all* claim validations are
+/// run and returned.
+///
+/// If validation succeeds a representation of the token is returned
+/// that contains the header and claims as simple JSON values.
+///
+/// It is the user's task to ensure that the correct JWK is passed in
+/// for validation.
+pub fn validate(token: &str,
+                jwk: &JWK,
+                validations: Vec<Validation>) -> JWTResult<ValidJWT> {
+    let jwt = JWT(token);
+    let public_key = public_key_from_jwk(&jwk)?;
+    validate_jwt_signature(&jwt, public_key)?;
+
+    // Split out all three parts of the JWT this time, deserialising
+    // the first and second as appropriate.
+    let parts: Vec<&str> = jwt.0.splitn(3, '.').collect();
+    if parts.len() != 3 {
+        // This is unlikely considering that validation has already
+        // been performed at this point, but better safe than sorry.
+        return Err(ValidationError::InvalidComponents)
+    }
+
+    // Perform claim validations before constructing the valid token:
+    let partial_claims = deserialize_part(parts[1])?;
+    validate_claims(partial_claims, validations)?;
+
+    let headers = deserialize_part(parts[0])?;
+    let claims = deserialize_part(parts[1])?;
+    let valid_jwt = ValidJWT { headers, claims };
+
+    Ok(valid_jwt)
+}
+
+// Internal implementation
+//
+// The functions in the following section are not part of the public
+// API of this library.
+
+/// Decode a single key fragment (base64-url encoded integer) to an
+/// OpenSSL BigNum.
+fn decode_fragment(fragment: &str) -> JWTResult<BigNum> {
+    let bytes = base64::decode_config(fragment, jwt_forgiving())
+        .map_err(|_| ValidationError::InvalidJWK)?;
+
+    BigNum::from_slice(&bytes).map_err(Into::into)
+}
+
+/// Decode an RSA public key from a JWK by constructing it directly
+/// from the public RSA key fragments.
+fn public_key_from_jwk(jwk: &JWK) -> JWTResult<Rsa<Public>> {
+    let jwk_n = decode_fragment(&jwk.n)?;
+    let jwk_e = decode_fragment(&jwk.e)?;
+    Rsa::from_public_components(jwk_n, jwk_e).map_err(Into::into)
+}
+
+/// Decode a base64-URL encoded string and deserialise the resulting
+/// JSON.
+fn deserialize_part<T: DeserializeOwned>(part: &str) -> JWTResult<T> {
+    let json = base64::decode_config(part, jwt_forgiving())?;
+    serde_json::from_slice(&json).map_err(Into::into)
+}
+
+/// Validate the signature on a JWT using a provided public key.
+///
+/// A JWT is made up of three components (headers, claims, signature)
+/// - only the first two are part of the signed data.
+fn validate_jwt_signature(jwt: &JWT, key: Rsa<Public>) -> JWTResult<()> {
+    let key = PKey::from_rsa(key)?;
+    let mut verifier = Verifier::new(MessageDigest::sha256(), &key)?;
+
+    // Split the token from the back to a maximum of two elements.
+    // There are technically three components using the same separator
+    // ('.'), but we are interested in the first two together and
+    // splitting them is unnecessary.
+    let token_parts: Vec<&str> = jwt.0.rsplitn(2, '.').collect();
+    if token_parts.len() != 2 {
+        return Err(ValidationError::InvalidComponents);
+    }
+
+    // Second element of the vector will be the signed payload.
+    let data = token_parts[1];
+
+    // First element of the vector will be the (encoded) signature.
+    let sig_b64 = token_parts[0];
+    let sig = base64::decode_config(sig_b64, jwt_forgiving())?;
+
+    // Verify signature by inserting the payload data and checking it
+    // against the decoded signature.
+    verifier.update(data.as_bytes())?;
+
+    match verifier.verify(&sig)? {
+        true  => Ok(()),
+        false => Err(ValidationError::InvalidSignature),
+    }
+}
+
+/// Internal helper struct for claims that are relevant for claim
+/// validations.
+#[derive(Deserialize)]
+struct PartialClaims {
+    aud: Option<String>,
+    iss: Option<String>,
+    sub: Option<String>,
+    exp: Option<u64>,
+}
+
+/// Apply a single validation to the claim set of a token.
+fn apply_validation(claims: &PartialClaims,
+                    validation: Validation) -> Result<(), &'static str> {
+    match validation {
+        // Validate that an 'iss' claim is present and matches the
+        // supplied value.
+        Validation::Issuer(iss) => {
+            match claims.iss {
+                None => Err("'iss' claim is missing"),
+                Some(ref claim) => if *claim == iss {
+                    Ok(())
+                } else {
+                    Err("'iss' claim does not match")
+                }
+            }
+        },
+
+        // Validate that an 'aud' claim is present and matches the
+        // supplied value.
+        Validation::Audience(aud) => {
+            match claims.aud {
+                None => Err("'aud' claim is missing"),
+                Some(ref claim) => if *claim == aud {
+                    Ok(())
+                } else {
+                    Err("'aud' claim does not match")
+                }
+            }
+        },
+
+        Validation::SubjectPresent => match claims.sub {
+            Some(_) => Ok(()),
+            None => Err("'sub' claim is missing"),
+        },
+
+        Validation::NotExpired => match claims.exp {
+            None => Err("'exp' claim is missing"),
+            Some(exp) => {
+                // Determine the current timestamp in seconds since
+                // the UNIX epoch.
+                let now = SystemTime::now()
+                    .duration_since(UNIX_EPOCH)
+                    // this is an unrecoverable, critical error. There
+                    // aren't many ways this can occur, other than
+                    // system time being set into the far future or
+                    // this library being used in some sort of future
+                    // museum.
+                    .expect("system time is likely incorrect");
+
+                // Convert the expiry time (which is also in epoch
+                // seconds) to a duration.
+                let exp_duration = Duration::from_secs(exp);
+
+                // The token has not expired if the expiry duration is
+                // larger than (i.e. in the future from) the current
+                // time.
+                if exp_duration > now {
+                    Ok(())
+                } else {
+                    Err("token has expired")
+                }
+            }
+        },
+    }
+}
+
+/// Apply all requested validations to a partial claim set.
+fn validate_claims(claims: PartialClaims,
+                   validations: Vec<Validation>) -> JWTResult<()> {
+    let validation_errors: Vec<_> = validations.into_iter()
+        .map(|v| apply_validation(&claims, v))
+        .filter_map(|result| match result {
+            Ok(_)    => None,
+            Err(err) => Some(err),
+        })
+        .collect();
+
+    if validation_errors.is_empty() {
+        Ok(())
+    } else {
+        Err(ValidationError::InvalidClaims(validation_errors))
+    }
+}
diff --git a/net/alcoholic_jwt/src/tests.rs b/net/alcoholic_jwt/src/tests.rs
new file mode 100644
index 000000000000..81890986f8a2
--- /dev/null
+++ b/net/alcoholic_jwt/src/tests.rs
@@ -0,0 +1,61 @@
+// Copyright (C) 2018  Aprila Bank ASA
+//
+// alcoholic_jwt 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 3 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 <http://www.gnu.org/licenses/>.
+
+use super::*;
+
+#[test]
+fn test_fragment_decoding() {
+    let fragment = "ngRRjNbXgPW29oNtF0JgsyyfTwPyEL0u_X16s453X2AOc33XGFxVKLEQ7R_TiMenaKcr-tPifYqgps_deyi0XOr4I3SOdOMtAVKDZJCANe--CANOHZb-meIfjKhCHisvT90fm5Apd6qPRVsXsZ7A8pmClZHKM5fwZUkBv8NsPLm2Xy2sGOZIiwP_7z8m3j0abUzniPQsx2b3xcWimB9vRtshFHN1KgPUf1ALQ5xzLfJnlFkCxC7kmOxKC7_NpQ4kJR_DKzKFV_r3HxTqf-jddHcXIrrMcLQXCSyeLQtLaz7whQ4F-EfL42z4XgwPr4ji3sct2gWL13EqlbE5DDxLKQ";
+    let bignum = decode_fragment(fragment).expect("Failed to decode fragment");
+
+    let expected = "19947781743618558124649689124245117083485690334420160711273532766920651190711502679542723943527557680293732686428091794139998732541701457212387600480039297092835433997837314251024513773285252960725418984381935183495143908023024822433135775773958512751261112853383693442999603704969543668619221464654540065497665889289271044207667765128672709218996183649696030570183970367596949687544839066873508106034650634722970893169823917299050098551447676778961773465887890052852528696684907153295689693676910831376066659456592813140662563597179711588277621736656871685099184755908108451080261403193680966083938080206832839445289";
+    assert_eq!(expected, format!("{}", bignum), "Decoded fragment should match ");
+}
+
+#[test]
+fn test_decode_find_jwks() {
+    let json = "{\"keys\":[{\"kty\":\"RSA\",\"alg\":\"RS256\",\"use\":\"sig\",\"kid\":\"mUjI\\/rIMLLtung35BKZfdbrqtlEAAYJ4JX\\/SKvnLxJc=\",\"n\":\"ngRRjNbXgPW29oNtF0JgsyyfTwPyEL0u_X16s453X2AOc33XGFxVKLEQ7R_TiMenaKcr-tPifYqgps_deyi0XOr4I3SOdOMtAVKDZJCANe--CANOHZb-meIfjKhCHisvT90fm5Apd6qPRVsXsZ7A8pmClZHKM5fwZUkBv8NsPLm2Xy2sGOZIiwP_7z8m3j0abUzniPQsx2b3xcWimB9vRtshFHN1KgPUf1ALQ5xzLfJnlFkCxC7kmOxKC7_NpQ4kJR_DKzKFV_r3HxTqf-jddHcXIrrMcLQXCSyeLQtLaz7whQ4F-EfL42z4XgwPr4ji3sct2gWL13EqlbE5DDxLKQ\",\"e\":\"GK7oLCDbNPAF59LhvyseqcG04hDnPs58qGYolr_HHmaR4lulWJ90ozx6e4Ut363yKG2p9vwvivR5UIC-aLPtqT2qr-OtjhBFzUFVaMGZ6mPCvMKk0AgMYdOHvWTgBSqQtNJTvl1yYLnhcWyoE2fLQhoEbY9qUyCBCEOScXOZRDpnmBtz5I8q5yYMV6a920J24T_IYbxHgkGcEU2SGg-b1cOMD7Rja7vCfV---CQ2pR4leQ0jufzudDoe7z3mziJm-Ihcdrz2Ujy5kPEMdz6R55prJ-ENKrkD_X4u5aSlSRaetwmHS3oAVkjr1JwUNbqnpM-kOqieqHEp8LUmez-Znw\"}]}";
+    let jwks: JWKS = serde_json::from_str(json).expect("Failed to decode JWKS");
+    let jwk = jwks.find("mUjI/rIMLLtung35BKZfdbrqtlEAAYJ4JX/SKvnLxJc=")
+        .expect("Failed to find required JWK");
+
+    public_key_from_jwk(&jwk).expect("Failed to construct public key from JWK");
+}
+
+#[test]
+fn test_token_kid() {
+    let jwt = "eyJraWQiOiI4ckRxOFB3MEZaY2FvWFdURVZRbzcrVGYyWXpTTDFmQnhOS1BDZWJhYWk0PSIsImFsZyI6IlJTMjU2IiwidHlwIjoiSldUIn0.eyJpc3MiOiJhdXRoLnRlc3QuYXByaWxhLm5vIiwiaWF0IjoxNTM2MDUwNjkzLCJleHAiOjE1MzYwNTQyOTMsInN1YiI6IjQyIiwiZXh0Ijoic21va2V0ZXN0IiwicHJ2IjoiYXJpc3RpIiwic2NwIjoicHJvY2VzcyJ9.gOLsv98109qLkmRK6Dn7WWRHLW7o8W78WZcWvFZoxPLzVO0qvRXXRLYc9h5chpfvcWreLZ4f1cOdvxv31_qnCRSQQPOeQ7r7hj_sPEDzhKjk-q2aoNHaGGJg1vabI--9EFkFsGQfoS7UbMMssS44dgR68XEnKtjn0Vys-Vzbvz_CBSCH6yQhRLik2SU2jR2L7BoFvh4LGZ6EKoQWzm8Z-CHXLGLUs4Hp5aPhF46dGzgAzwlPFW4t9G4DciX1uB4vv1XnfTc5wqJch6ltjKMde1GZwLR757a8dJSBcmGWze3UNE2YH_VLD7NCwH2kkqr3gh8rn7lWKG4AUIYPxsw9CB";
+
+    let kid = token_kid(&jwt).expect("Failed to extract token KID");
+    assert_eq!(Some("8rDq8Pw0FZcaoXWTEVQo7+Tf2YzSL1fBxNKPCebaai4=".into()),
+               kid, "Extracted KID did not match expected KID");
+}
+
+#[test]
+fn test_validate_jwt() {
+    let jwks_json = "{\"keys\":[{\"kty\":\"RSA\",\"alg\":\"RS256\",\"use\":\"sig\",\"kid\":\"8rDq8Pw0FZcaoXWTEVQo7+Tf2YzSL1fBxNKPCebaai4=\",\"n\":\"l4UTgk1zr-8C8utt0E57DtBV6qqAPWzVRrIuQS2j0_hp2CviaNl5XzGRDnB8gwk0Hx95YOhJupAe6RNq5ok3fDdxL7DLvppJNRLz3Ag9CsmDLcbXgNEQys33fBJaPw1v3GcaFC4tisU5p-o1f5RfWwvwdBtdBfGiwT1GRvbc5sFx6M4iYjg9uv1lNKW60PqSJW4iDYrfqzZmB0zF1SJ0BL_rnQZ1Wi_UkFmNe9arM8W9tI9T3Ie59HITFuyVSTCt6qQEtSfa1e5PiBaVuV3qoFI2jPBiVZQ6LPGBWEDyz4QtrHLdECPPoTF30NN6TSVwwlRbCuUUrdNdXdjYe2dMFQ\",\"e\":\"DhaD5zC7mzaDvHO192wKT_9sfsVmdy8w8T8C9VG17_b1jG2srd3cmc6Ycw-0blDf53Wrpi9-KGZXKHX6_uIuJK249WhkP7N1SHrTJxO0sUJ8AhK482PLF09Qtu6cUfJqY1X1y1S2vACJZItU4Vjr3YAfiVGQXeA8frAf7Sm4O1CBStCyg6yCcIbGojII0jfh2vSB-GD9ok1F69Nmk-R-bClyqMCV_Oq-5a0gqClVS8pDyGYMgKTww2RHgZaFSUcG13KeLMQsG2UOB2OjSC8FkOXK00NBlAjU3d0Vv-IamaLIszO7FQBY3Oh0uxNOvIE9ofQyCOpB-xIK6V9CTTphxw\"}]}";
+
+    let jwks: JWKS = serde_json::from_str(jwks_json)
+        .expect("Failed to decode JWKS");
+
+    let jwk = jwks.find("8rDq8Pw0FZcaoXWTEVQo7+Tf2YzSL1fBxNKPCebaai4=")
+        .expect("Failed to find required JWK");
+
+    let pkey = public_key_from_jwk(&jwk).expect("Failed to construct public key");
+
+    let jwt = JWT("eyJraWQiOiI4ckRxOFB3MEZaY2FvWFdURVZRbzcrVGYyWXpTTDFmQnhOS1BDZWJhYWk0PSIsImFsZyI6IlJTMjU2IiwidHlwIjoiSldUIn0.eyJpc3MiOiJhdXRoLnRlc3QuYXByaWxhLm5vIiwiaWF0IjoxNTM2MDUwNjkzLCJleHAiOjE1MzYwNTQyOTMsInN1YiI6IjQyIiwiZXh0Ijoic21va2V0ZXN0IiwicHJ2IjoiYXJpc3RpIiwic2NwIjoicHJvY2VzcyJ9.gOLsv98109qLkmRK6Dn7WWRHLW7o8W78WZcWvFZoxPLzVO0qvRXXRLYc9h5chpfvcWreLZ4f1cOdvxv31_qnCRSQQPOeQ7r7hj_sPEDzhKjk-q2aoNHaGGJg1vabI--9EFkFsGQfoS7UbMMssS44dgR68XEnKtjn0Vys-Vzbvz_CBSCH6yQhRLik2SU2jR2L7BoFvh4LGZ6EKoQWzm8Z-CHXLGLUs4Hp5aPhF46dGzgAzwlPFW4t9G4DciX1uB4vv1XnfTc5wqJch6ltjKMde1GZwLR757a8dJSBcmGWze3UNE2YH_VLD7NCwH2kkqr3gh8rn7lWKG4AUIYPxsw9CB".into());
+
+    validate_jwt_signature(&jwt, pkey).expect("Validation failed unexpectedly");
+}