Fix FFI cipher interface

Was totally broken, when not encrypting in one shot. (GH #1003)

Enable the test, which had been commented out :(

1 files changed, 2 insertions, 0 deletions

diff --git a/src/lib/ffi/ffi.cpp b/src/lib/ffi/ffi.cpp
index 7cf69efb3..6c97520ce 100644
--- a/src/lib/ffi/ffi.cpp
+++ b/src/lib/ffi/ffi.cpp
@@ -935,6 +935,7 @@ int botan_cipher_update(botan_cipher_t cipher_obj,
          cipher.update(mbuf);
 
          input_size -= ud;
+         copy_mem(output, mbuf.data(), ud);
          input += ud;
          taken += ud;
 
@@ -946,6 +947,7 @@ int botan_cipher_update(botan_cipher_t cipher_obj,
       *output_written = written;
       *input_consumed = taken;
 
+      return 0;
       }
    catch(std::exception& e)
       {