1 files changed, 66 insertions, 0 deletions
diff --git a/lib/crypto/c_src/rc4.c b/lib/crypto/c_src/rc4.c
new file mode 100644
index 0000000000..483c87b04b
--- /dev/null
+++ b/lib/crypto/c_src/rc4.c
@@ -0,0 +1,66 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2010-2018. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#include "rc4.h"
+
+ERL_NIF_TERM rc4_set_key(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (Key) */
+#ifndef OPENSSL_NO_RC4
+    ErlNifBinary key;
+    ERL_NIF_TERM ret;
+
+    CHECK_NO_FIPS_MODE();
+
+    if (!enif_inspect_iolist_as_binary(env,argv[0], &key)) {
+	return enif_make_badarg(env);
+    }
+    RC4_set_key((RC4_KEY*)enif_make_new_binary(env, sizeof(RC4_KEY), &ret),
+		key.size, key.data);
+    return ret;
+#else
+    return enif_raise_exception(env, atom_notsup);
+#endif
+}
+
+ERL_NIF_TERM rc4_encrypt_with_state(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{/* (State, Data) */
+#ifndef OPENSSL_NO_RC4
+    ErlNifBinary state, data;
+    RC4_KEY* rc4_key;
+    ERL_NIF_TERM new_state, new_data;
+
+    CHECK_NO_FIPS_MODE();
+
+    if (!enif_inspect_iolist_as_binary(env,argv[0], &state)
+	|| state.size != sizeof(RC4_KEY)
+	|| !enif_inspect_iolist_as_binary(env,argv[1], &data)) {
+	return enif_make_badarg(env);
+    }
+    rc4_key = (RC4_KEY*)enif_make_new_binary(env, sizeof(RC4_KEY), &new_state);
+    memcpy(rc4_key, state.data, sizeof(RC4_KEY));
+    RC4(rc4_key, data.size, data.data,
+	enif_make_new_binary(env, data.size, &new_data));
+    CONSUME_REDS(env,data);
+    return enif_make_tuple2(env,new_state,new_data);
+#else
+    return enif_raise_exception(env, atom_notsup);
+#endif
+}
+