Begin implementing symmetric encryption

Support RC4. Future commits will add support for more modern algorithms.

1 files changed, 5 insertions, 0 deletions

diff --git a/cbits/btls.c b/cbits/btls.c
index d4bfd62..38cf73a 100644
--- a/cbits/btls.c
+++ b/cbits/btls.c
@@ -12,8 +12,13 @@
 // License for the specific language governing permissions and limitations under
 // the License.
 
+#include <openssl/cipher.h>
 #include <openssl/digest.h>
 
+void btlsFinalizeEVPCipherCtx(EVP_CIPHER_CTX* const ctx) {
+  (void)EVP_CIPHER_CTX_cleanup(ctx);
+}
+
 void btlsFinalizeEVPMDCtx(EVP_MD_CTX* const ctx) {
   (void)EVP_MD_CTX_cleanup(ctx);
 }