libdkim++ is a lightweight and portable DKIM (RFC6376) library for *NIX, supporting both signing and DMARC/ARC/SDID verification sponsored and used by Halon Security's (http://halon.io) SMTP platform. libdkim++ has extensive unit test coverage and aims to fully comply with the current RFC.

Building

This library requires CMake (http://www.cmake.org/) to compile, and depends on OpenSSL (which is normally shipped with *NIX distributions).

$ cmake .
$ make && make install

You might need to add some packages, like a C++ compiler and cppunit which can be done by running pkg_add -r cppunit, apt-get install cppunit or yum install cppunit-devel depending on operating system.

• cmake
• pkg-config
• cppunit
• libssl-dev
• libsodium

Because some systems (like OpenBSD) lacks a reentrant resolver, this library might not be thread-safe on all platforms.

Testing

libdkim++ has extensive unit test coverage and aims to fully comply with the current RFC.

$ make test

which should result in this output:

Running tests...
Test project /home/erik/Desktop/libdkimpp/build
   Start 1: QuotedPrintableTest
1/8 Test #1: QuotedPrintableTest ..............   Passed    0.00 sec
   Start 2: Base64Test
2/8 Test #2: Base64Test .......................   Passed    0.00 sec
   Start 3: CanonicalizationTest
3/8 Test #3: CanonicalizationTest .............   Passed    0.00 sec
   Start 4: MailParserTest
4/8 Test #4: MailParserTest ...................   Passed    0.00 sec
   Start 5: TokenizerTest
5/8 Test #5: TokenizerTest ....................   Passed    0.00 sec
   Start 6: EncodedWordTest
6/8 Test #6: EncodedWordTest ..................   Passed    0.00 sec
   Start 7: SignatoryTest
7/8 Test #7: SignatoryTest ....................   Passed    0.04 sec
   Start 8: TagListTest
8/8 Test #8: TagListTest ......................   Passed    0.00 sec
100% tests passed, 0 tests failed out of 8
Total Test time (real) =   0.08 sec