diff --git a/Project/Src/com/cscn/Method.java b/Project/Src/com/cscn/Method.java
index cb4648f..e002501 100644
--- a/Project/Src/com/cscn/Method.java
+++ b/Project/Src/com/cscn/Method.java
@@ -25,10 +25,16 @@ public final class Method {
 	};
 
 	// IV
-	private static final byte[] IV25 = {//todo 23 -> 25
-			(byte)0x30,(byte)0x31,(byte)0x32,(byte)0x33,(byte)0x34,(byte)0x35,(byte)0x36,(byte)0x37,
-			(byte)0x38,(byte)0x39,(byte)0x61,(byte)0x62,(byte)0x63,(byte)0x64,(byte)0x65,(byte)0x66,
-			(byte)0x67,(byte)0xC3,(byte)0x1C,(byte)0xB3,(byte)0xD3,(byte)0x5D,(byte)0xB7
+//	private static final byte[] IV23 = {
+//			(byte)0x30,(byte)0x31,(byte)0x32,(byte)0x33,(byte)0x34,(byte)0x35,(byte)0x36,(byte)0x37,
+//			(byte)0x38,(byte)0x39,(byte)0x61,(byte)0x62,(byte)0x63,(byte)0x64,(byte)0x65,(byte)0x66,
+//			(byte)0x67,(byte)0xC3,(byte)0x1C,(byte)0xB3,(byte)0xD3,(byte)0x5D,(byte)0xB7
+//	};
+	private static final byte[] IV25 = {
+		(byte)0x30,(byte)0x31,(byte)0x32,(byte)0x33,(byte)0x34,(byte)0x35,(byte)0x36,(byte)0x37,
+		(byte)0x38,(byte)0x39,(byte)0x61,(byte)0x62,(byte)0x63,(byte)0x64,(byte)0x65,(byte)0x66,
+		(byte)0x67,(byte)0x30,(byte)0x31,(byte)0x32,(byte)0x33,(byte)0x34,(byte)0x35,(byte)0x36,
+		(byte)0x37
 	};
 
 	// Input: 明文（38字节）
@@ -87,7 +93,8 @@ public final class Method {
 	short[] L2_t;
 	short[] L2_acc;
 
-	byte[] extract_iv_src;
+	byte[] extract_iv_last8;
+	byte[] extracted_iv_23;
 
 	short[] add64_tmp;
 
@@ -152,6 +159,9 @@ public final class Method {
 
 
 	public Method() {
+		// 算法内部使用23Byte IV
+		extracted_iv_23 = JCSystem.makeTransientByteArray((short)23, JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
+
 		ctx_buf = JCSystem.makeTransientByteArray((short)4, JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
         LFSR_hi = JCSystem.makeTransientShortArray((short)16, JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
         LFSR_lo = JCSystem.makeTransientShortArray((short)16, JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
@@ -175,7 +185,7 @@ public final class Method {
 		L2_t = JCSystem.makeTransientShortArray((short)2, JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
 		L2_acc = JCSystem.makeTransientShortArray((short)2, JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
 
-		extract_iv_src = JCSystem.makeTransientByteArray((short)8, JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
+		extract_iv_last8 = JCSystem.makeTransientByteArray((short)8, JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
 
 		add64_tmp = JCSystem.makeTransientShortArray((short)2, JCSystem.MEMORY_TYPE_TRANSIENT_RESET);
 
@@ -660,15 +670,15 @@ public final class Method {
 
 		// 处理剩余8字节
 		for (short i = 0; i < 8; i++) {
-			extract_iv_src[i] = (byte) (input25Byte[(short)(17 + i)] & 0x3F);
+			extract_iv_last8[i] = (byte) (input25Byte[(short)(17 + i)] & 0x3F);
 		}
 
-		output23Byte[17] = (byte) ((extract_iv_src[0] << 2) | (extract_iv_src[1] >>> 4));
-		output23Byte[18] = (byte) (((extract_iv_src[1] & 0x0F) << 4) | (extract_iv_src[2] >>> 2));
-		output23Byte[19] = (byte) (((extract_iv_src[2] & 0x03) << 6) | extract_iv_src[3]);
-		output23Byte[20] = (byte) ((extract_iv_src[4] << 2) | (extract_iv_src[5] >>> 4));
-		output23Byte[21] = (byte) (((extract_iv_src[5] & 0x0F) << 4) | (extract_iv_src[6] >>> 2));
-		output23Byte[22] = (byte) (((extract_iv_src[6] & 0x03) << 6) | extract_iv_src[7]);
+		output23Byte[17] = (byte) ((extract_iv_last8[0] << 2) | (extract_iv_last8[1] >>> 4));
+		output23Byte[18] = (byte) (((extract_iv_last8[1] & 0x0F) << 4) | (extract_iv_last8[2] >>> 2));
+		output23Byte[19] = (byte) (((extract_iv_last8[2] & 0x03) << 6) | extract_iv_last8[3]);
+		output23Byte[20] = (byte) ((extract_iv_last8[4] << 2) | (extract_iv_last8[5] >>> 4));
+		output23Byte[21] = (byte) (((extract_iv_last8[5] & 0x0F) << 4) | (extract_iv_last8[6] >>> 2));
+		output23Byte[22] = (byte) (((extract_iv_last8[6] & 0x03) << 6) | extract_iv_last8[7]);
 	}
 
 	/**
@@ -1403,13 +1413,14 @@ public final class Method {
 	//===zuc256Encryptctx
 
 	// 初始化加密上下文
-	public void initZuc256EncryptCtx(byte[] key32, byte[] iv) {
+	public void initZuc256EncryptCtx(byte[] key32, byte[] iv_in_25) {
+		extractIv(iv_in_25, extracted_iv_23);
 //        Arrays.fill(this.buf, (byte) 0);
 		for (short i = 0; i < (short)this.ctx_buf.length; i++) {
 			this.ctx_buf[i] = (byte)0;
 		}
 		this.ctx_buflen = 0;
-		initState(key32, iv);
+		initState(key32, extracted_iv_23);
 	}
 
 	// 分阶段处理加密数据