init: v1.0.0

2026-05-27 23:03:00 +08:00
commit 8d97f750eb
466 changed files with 80067 additions and 0 deletions
@@ -0,0 +1,110 @@
+package gcm
+
+import (
+	"bytes"
+	"crypto/cipher"
+	"encoding/hex"
+	"fmt"
+	"testing"
+
+	"xdx.jelly/xgcl/sm/sm4"
+)
+
+func TestGCM(t *testing.T) {
+	key, _ := hex.DecodeString("11754cd72aec309bf52f7687212e8957")
+	block, _ := sm4.NewCipher(key)
+	aead, _ := NewGCM(block)
+	gcm := aead.(*gcm)
+
+	f1 := &gcmFieldElement{
+		low:  0,
+		high: 1,
+	}
+	// f2 := &gcmFieldElement{
+	// 	low:  0,
+	// 	high: 0x8000000000000000,
+	// }
+
+	gcm.mul(f1)
+	fmt.Printf("%016x %016x\n", f1.high, f1.low)
+
+}
+
+// sm4_GCM模式
+var sm4GCMTests = []struct {
+	key, nonce, plaintext, ad, result string
+}{
+	{
+		"11754cd72aec309bf52f7687212e8957",
+		"3c819d9a9bed087615030b65", // nonce should be 12 bytes.
+		"plaintext",
+		"additional message not need encrypt, empty is ok",
+		"6111f78f2f82b913c20e333160bfec034c3720ac133a6203b1",
+	},
+}
+
+func TestSM4GCM(t *testing.T) {
+
+	for i, test := range sm4GCMTests {
+		key, _ := hex.DecodeString(test.key)
+		var sm4gcm cipher.AEAD
+		var err error
+		// user cipher.NewGCM
+		block, err := sm4.NewCipher(key)
+		if err != nil {
+			t.Fatal(err)
+		}
+		sm4gcm, err = NewGCM(block)
+
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		nonce, _ := hex.DecodeString(test.nonce)
+		plaintext := []byte(test.plaintext)
+
+		ad := []byte(test.ad)
+		fmt.Printf("plaintext:%x\n", plaintext)
+		ct := sm4gcm.Seal(plaintext[:0], nonce, plaintext, ad)
+
+		fmt.Printf("plaintext: %x\n", plaintext)
+		fmt.Printf("cipherText: %x\n", ct)
+
+		if ctHex := hex.EncodeToString(ct); ctHex != test.result {
+			t.Errorf("#%d: got %s, want %s", i, ctHex, test.result)
+			continue
+		}
+
+		plaintext2, err := sm4gcm.Open(ct[:0], nonce, ct, ad)
+		if err != nil {
+			t.Errorf("#%d: Open failed", i)
+			continue
+		}
+
+		if !bytes.Equal(plaintext, plaintext2) {
+			t.Errorf("#%d: plaintext's don't match: got %x vs %x", i, plaintext2, plaintext)
+			continue
+		}
+
+		// if ad, nonce, ct was changed, return err
+		if len(ad) > 0 {
+			ad[0] ^= 0x80
+			if _, err := sm4gcm.Open(nil, nonce, ct, ad); err == nil {
+				t.Errorf("#%d: Open was successful after altering additional data", i)
+			}
+			ad[0] ^= 0x80
+		}
+
+		nonce[0] ^= 0x80
+		if _, err := sm4gcm.Open(nil, nonce, ct, ad); err == nil {
+			t.Errorf("#%d: Open was successful after altering nonce", i)
+		}
+		nonce[0] ^= 0x80
+
+		ct[0] ^= 0x80
+		if _, err := sm4gcm.Open(nil, nonce, ct, ad); err == nil {
+			t.Errorf("#%d: Open was successful after altering ciphertext", i)
+		}
+		ct[0] ^= 0x80
+	}
+}