feat: encrypt works

examples/test.rs

@@ -0,0 +1,47 @@
+use benchmark_simple::{Bench, Options};
+
+use sm4_gcm::Sm4GcmStreamEncryptor;
+
+fn main() {
+    let key = [0u8; 16];
+    let nonce = [0u8; 12];
+    let mut e = Sm4GcmStreamEncryptor::new(key, &nonce);
+
+    println!("{}", hex::encode(&key));
+    println!("{}", hex::encode(&nonce));
+
+    let a = e.update(b"hello world");
+    let (b, t) = e.finalize();
+
+    let mut enc = a.clone();
+    enc.extend_from_slice(&b);
+    enc.extend_from_slice(&t);
+
+    println!("{}", hex::encode(&enc));
+
+    // ----------------------------------------------------------------------
+    let bench = Bench::new();
+    let mut m = vec![0xd0u8; 16384];
+
+    let options = &Options {
+        iterations: 1_000,
+        warmup_iterations: 1_00,
+        min_samples: 5,
+        max_samples: 10,
+        max_rsd: 1.0,
+        ..Default::default()
+    };
+
+    let res = bench.run(options, || test_sm4_encrypt(&mut m));
+    println!("SM4/GCM encrypt : {}", res.throughput(m.len() as _));
+}
+
+
+fn test_sm4_encrypt(m: &mut [u8]) {
+    let key = [0u8; 16];
+    let nonce = [0u8; 12];
+    let mut encryptor = Sm4GcmStreamEncryptor::new(key, &nonce);
+
+    encryptor.update(m);
+    encryptor.finalize();
+}