Make Stream_Cipher::set_iv() pure virtual

It provided a default implementation that only checked
that the length was correct, but ignored the actual data
and did not notify the caller, which seemed like a
rather odd behaviour.

The only implementation that used this default implementation,
RC4, now throws an exception.

1 files changed, 0 insertions, 6 deletions

diff --git a/src/lib/stream/stream_cipher.cpp b/src/lib/stream/stream_cipher.cpp
index 6f98df1fb..cd6400d8f 100644
--- a/src/lib/stream/stream_cipher.cpp
+++ b/src/lib/stream/stream_cipher.cpp
@@ -44,12 +44,6 @@ std::vector<std::string> StreamCipher::providers(const std::string& algo_spec)
 StreamCipher::StreamCipher() {}
 StreamCipher::~StreamCipher() {}
 
-void StreamCipher::set_iv(const byte[], size_t iv_len)
-   {
-   if(!valid_iv_length(iv_len))
-      throw Invalid_IV_Length(name(), iv_len);
-   }
-
 #if defined(BOTAN_HAS_CHACHA)
 BOTAN_REGISTER_T_1LEN(StreamCipher, ChaCha, 20);
 #endif