Create a new API to abstract the crypto functions used by pppd.

This re-introduces the missing DES encryption functions copied from Openssl 3.0 project. Incorporates a new API for performing MD4/MD5/SHA and encryption using DES-ECB mode.

Unit tests are included for respective digest/encryption functions using this new API. With this change, you can pass configure --without-openssl to use the internally provided functions. If you do have openssl, then it will default to use these functions. This also provides a framework to allow other vendors to provide crypto.

This closes #333, partially addresses #242 (except the pkcs11 engine support). Word has it that openssl is working on support for this, and the libp11 / opensc project are inclined not to support this.

Signed-off-by: Eivind Næss <eivnaes@yahoo.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/pppd/main.c b/pppd/main.c
index 7e47752..8d5f32b 100644
--- a/pppd/main.c
+++ b/pppd/main.c
@@ -109,6 +109,7 @@
 #include "ccp.h"
 #include "ecp.h"
 #include "pathnames.h"
+#include "ppp-crypto.h"
 
 #ifdef PPP_WITH_TDB
 #include "tdb.h"
@@ -294,6 +295,8 @@ main(int argc, char *argv[])
     struct protent *protp;
     char numbuf[16];
 
+    PPP_crypto_init();
+
     strlcpy(path_ipup, PPP_PATH_IPUP, MAXPATHLEN);
     strlcpy(path_ipdown, PPP_PATH_IPDOWN, MAXPATHLEN);
 
@@ -581,6 +584,7 @@ main(int argc, char *argv[])
 	}
     }
 
+    PPP_crypto_deinit();
     die(status);
     return 0;
 }