State new contribution rules.

* doc/DCO: New.
* doc/HACKING: Document new rules.

1 files changed, 29 insertions, 0 deletions

diff --git a/doc/DCO b/doc/DCO
new file mode 100644
index 00000000..ee460f6b
--- /dev/null
+++ b/doc/DCO
@@ -0,0 +1,29 @@
+Libgcrypt Developer's Certificate of Origin.  Version 1.0
+=========================================================
+
+By making a contribution to the Libgcrypt project, I certify that:
+
+(a) The contribution was created in whole or in part by me and I
+    have the right to submit it under the free software license
+    indicated in the file; or
+
+(b) The contribution is based upon previous work that, to the
+    best of my knowledge, is covered under an appropriate free
+    software license and I have the right under that license to
+    submit that work with modifications, whether created in whole
+    or in part by me, under the same free software license
+    (unless I am permitted to submit under a different license),
+    as indicated in the file; or
+
+(c) The contribution was provided directly to me by some other
+    person who certified (a), (b) or (c) and I have not modified
+    it.
+
+(d) I understand and agree that this project and the contribution
+    are public and that a record of the contribution (including
+    all personal information I submit with it, including my
+    sign-off) is maintained indefinitely and may be redistributed
+    consistent with this project or the free software license(s)
+    involved.
+
+Signed-off-by: [Your name and mail address]