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| author | Dimitri Staessens <[email protected]> | 2019-08-02 19:12:34 +0200 |
|---|---|---|
| committer | Sander Vrijders <[email protected]> | 2019-08-03 12:10:57 +0200 |
| commit | 9e8d603d14561095fb8d08871319a315d3bf6763 (patch) | |
| tree | 7a87c212fcd642a8696145b4246a4fc4cf964e10 /src/lib/config.h.in | |
| parent | 8a37ffbf8c0776a38f2de18a63e885383960ee68 (diff) | |
| download | ouroboros-9e8d603d14561095fb8d08871319a315d3bf6763.tar.gz ouroboros-9e8d603d14561095fb8d08871319a315d3bf6763.zip | |
lib: Add per-message encryption with OpenSSL
This adds a per-message symmetric encryption using the OpenSSL
library. At flow allocation, an Elliptic Curve Diffie-Hellman exchange
is performed to derive a shared secret, which is then hashed using
SHA3-256 to be used as a key for symmetric AES-256 encryption. Each
message on an encrypted flow adds a small crypto header that includes
a random 128-bit Initialization Vector (IV). If the server does not
have OpenSSL enabled, the flow allocation will fail with an -ECRYPT
error.
Future optimizations are to piggyback the public keys on the flow
allocation message, and to enable per-flow encryption that maintains
the context of the encryption over multiple packets and doesn't
require sending IVs.
Signed-off-by: Dimitri Staessens <[email protected]>
Signed-off-by: Sander Vrijders <[email protected]>
Diffstat (limited to 'src/lib/config.h.in')
| -rw-r--r-- | src/lib/config.h.in | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/lib/config.h.in b/src/lib/config.h.in index 3e5a7b1e..70261cab 100644 --- a/src/lib/config.h.in +++ b/src/lib/config.h.in @@ -24,6 +24,10 @@ #cmakedefine HAVE_LIBGCRYPT #cmakedefine HAVE_OPENSSL +#ifdef HAVE_OPENSSL +#define HAVE_ENCRYPTION +#endif + #define SYS_MAX_FLOWS @SYS_MAX_FLOWS@ #cmakedefine SHM_RBUFF_LOCKLESS |