add go version to increase performance

gover/.gitignore

@@ -0,0 +1,2 @@
+proto
+*.exe

gover/ec2b/ec2b.go

@@ -0,0 +1,64 @@
+package ec2b
+
+import (
+	"encoding/binary"
+	"errors"
+
+	"github.com/MoonlightPS/Iridium-gidra/gover/utils"
+)
+
+var le = binary.LittleEndian
+
+// UnityPlayer:$26EA90
+func key_scramble(key []byte) {
+	round_keys := make([]byte, 11*16)
+	for round := 0; round <= 10; round++ {
+		for i := 0; i < 16; i++ {
+			for j := 0; j < 16; j++ {
+				idx := (round << 8) + (i * 16) + j
+				round_keys[round*16+i] ^= aes_xorpad_table[1][idx] ^ aes_xorpad_table[0][idx]
+			}
+		}
+	}
+	var chip [16]byte
+	oqs_mhy128_enc_c(key, round_keys, chip[:])
+	copy(key, chip[:])
+}
+
+// UnityPlayer:$19DA40
+func get_decrypt_vector(key, crypt []byte) ([]byte, error) {
+	var val uint64 = 0xFFFFFFFFFFFFFFFF
+	for i := 0; i < len(crypt)>>3; i++ {
+		val = le.Uint64(crypt[i<<3:]) ^ val
+	}
+
+	key_hi, key_lo := le.Uint64(key), le.Uint64(key[8:])
+	mt := utils.NewMT19937_64()
+	mt.Seed(key_lo ^ 0xCEAC3B5A867837AC ^ val ^ key_hi)
+
+	out := make([]byte, 0, utils.DEFAULT_KEY_LEN)
+	for i := 0; i < utils.DEFAULT_KEY_LEN; i += 8 {
+		out = le.AppendUint64(out, mt.Int64())
+	}
+	return out, nil
+}
+
+func Derive(ec2b []byte) ([]byte, error) {
+	if len(ec2b) != 2076 {
+		return nil, errors.New("ec2b size must be 2076")
+	}
+
+	var key [16]byte
+	var data [2048]byte
+
+	copy(key[:], ec2b[8:])
+	copy(data[:], ec2b[28:])
+
+	key_scramble(key[:])
+
+	for i := 0; i < 16; i++ {
+		key[i] ^= key_xorpad_table[i]
+	}
+
+	return get_decrypt_vector(key[:], data[:])
+}

gover/ec2b/ec2b_test.go

@@ -0,0 +1,19 @@
+package ec2b
+
+import (
+	"encoding/base64"
+	"fmt"
+	"testing"
+)
+
+func TestEC2B(t *testing.T) {
+	d, err := base64.StdEncoding.DecodeString("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")
+	if err != nil {
+		panic(err)
+	}
+	res, err := Derive(d)
+	if err != nil {
+		panic(err)
+	}
+	fmt.Println(res[0], res[1], res[2], res[3])
+}