chore: checkpoint before Python removal

vendor/des/benches/mod.rs

@@ -0,0 +1,19 @@
+#![feature(test)]
+extern crate test;
+
+use cipher::{block_decryptor_bench, block_encryptor_bench};
+use des::{Des, TdesEde3};
+
+block_encryptor_bench!(Key: Des, des_encrypt_block, des_encrypt_blocks);
+block_decryptor_bench!(Key: Des, des_decrypt_block, des_decrypt_blocks);
+
+block_encryptor_bench!(
+    Key: TdesEde3,
+    tdes_ede3_encrypt_block,
+    tdes_ede3_encrypt_blocks,
+);
+block_decryptor_bench!(
+    Key: TdesEde3,
+    tdes_ede3_decrypt_block,
+    tdes_ede3_decrypt_blocks,
+);