小于 4M 可以

This commit is contained in:
cheney 2026-06-03 16:34:41 +08:00
parent 7a4a83e6d0
commit a452376d8d
4 changed files with 211 additions and 4 deletions

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@ -45,6 +45,9 @@ public class SydApiException extends RuntimeException{
case 4:
msg = "DER 编码格式错误(公钥) ";
break;
case 31:
msg = "缓冲区索引错误";
break;
case 0xd:
msg = "公钥加密错误";
break;

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@ -0,0 +1,174 @@
package com.sunyard.util;
import java.nio.ByteOrder;
/**
* 字节数组转换工具类提供常见的基本类型与字节数组之间的互转功能
* 默认采用大端字节序高位在前也支持通过参数指定字节序
*
* @author YourName
*/
public final class BytesUtil {
private BytesUtil() {
// 私有构造方法防止实例化
}
// ==================== 无符号 short 转字节数组 ====================
/**
* 将无符号 short int 形式传入范围 0 ~ 65535转换为大端字节序的字节数组2字节
*
* @param value 无符号 short 0 65535
* @return 长度为 2 的字节数组高位在前
* @throws IllegalArgumentException 如果 value 超出 0~65535 范围
*/
public static byte[] unsignedShortToBytes(int value) {
if (value < 0 || value > 0xFFFF) {
throw new IllegalArgumentException("Value out of range for unsigned short: " + value);
}
return new byte[]{
(byte) ((value >> 8) & 0xFF),
(byte) (value & 0xFF)
};
}
/**
* 将无符号 short short 类型传入自动按无符号处理转换为大端字节序的字节数组2字节
* 例如传入 (short) 0x8001 会得到 { (byte)0x80, (byte)0x01 }
*
* @param value short 类型将按其二进制补码表示直接作为无符号值处理
* @return 长度为 2 的字节数组高位在前
*/
public static byte[] unsignedShortToBytes(short value) {
// short 转为无符号 int
int unsignedValue = value & 0xFFFF;
return unsignedShortToBytes(unsignedValue);
}
/**
* 将无符号 short int 类型转换为指定字节序的字节数组2字节
*
* @param value 无符号 short 0 65535
* @param byteOrder 字节序ByteOrder.BIG_ENDIAN ByteOrder.LITTLE_ENDIAN
* @return 长度为 2 的字节数组
* @throws IllegalArgumentException 如果 value 超出范围或 byteOrder null
*/
public static byte[] unsignedShortToBytes(int value, ByteOrder byteOrder) {
if (byteOrder == null) {
throw new IllegalArgumentException("ByteOrder must not be null");
}
byte[] bytes = unsignedShortToBytes(value);
if (byteOrder == ByteOrder.LITTLE_ENDIAN) {
// 交换高低位
byte tmp = bytes[0];
bytes[0] = bytes[1];
bytes[1] = tmp;
}
return bytes;
}
/**
* 将无符号 short short 类型转换为指定字节序的字节数组2字节
*
* @param value short 类型按无符号处理
* @param byteOrder 字节序
* @return 长度为 2 的字节数组
*/
public static byte[] unsignedShortToBytes(short value, ByteOrder byteOrder) {
return unsignedShortToBytes(value & 0xFFFF, byteOrder);
}
// ==================== 字节数组转无符号 short ====================
/**
* 从字节数组的起始位置读取 2 字节按大端序转换为无符号 short 返回 int 类型
*
* @param bytes 字节数组
* @param offset 起始偏移量
* @return 无符号 short 0 ~ 65535
* @throws IllegalArgumentException 如果 bytes null 或长度不足
*/
public static int bytesToUnsignedShort(byte[] bytes, int offset) {
if (bytes == null || offset + 2 > bytes.length) {
throw new IllegalArgumentException("Invalid byte array or offset");
}
return ((bytes[offset] & 0xFF) << 8) | (bytes[offset + 1] & 0xFF);
}
/**
* 从字节数组的起始位置读取 2 字节按指定字节序转换为无符号 short
*
* @param bytes 字节数组
* @param offset 起始偏移量
* @param byteOrder 字节序
* @return 无符号 short
*/
public static int bytesToUnsignedShort(byte[] bytes, int offset, ByteOrder byteOrder) {
if (byteOrder == ByteOrder.LITTLE_ENDIAN) {
return ((bytes[offset + 1] & 0xFF) << 8) | (bytes[offset] & 0xFF);
} else {
return bytesToUnsignedShort(bytes, offset);
}
}
// ==================== 其他常见转换扩展 ====================
/**
* int 值转换为大端序的 4 字节数组
*/
public static byte[] intToBytes(int value) {
return new byte[]{
(byte) ((value >> 24) & 0xFF),
(byte) ((value >> 16) & 0xFF),
(byte) ((value >> 8) & 0xFF),
(byte) (value & 0xFF)
};
}
/**
* 将大端序的 4 字节数组转换为 int
*/
public static int bytesToInt(byte[] bytes, int offset) {
if (bytes == null || offset + 4 > bytes.length) {
throw new IllegalArgumentException("Invalid byte array or offset");
}
return ((bytes[offset] & 0xFF) << 24)
| ((bytes[offset + 1] & 0xFF) << 16)
| ((bytes[offset + 2] & 0xFF) << 8)
| (bytes[offset + 3] & 0xFF);
}
/**
* long 值转换为大端序的 8 字节数组
*/
public static byte[] longToBytes(long value) {
return new byte[]{
(byte) ((value >> 56) & 0xFF),
(byte) ((value >> 48) & 0xFF),
(byte) ((value >> 40) & 0xFF),
(byte) ((value >> 32) & 0xFF),
(byte) ((value >> 24) & 0xFF),
(byte) ((value >> 16) & 0xFF),
(byte) ((value >> 8) & 0xFF),
(byte) (value & 0xFF)
};
}
/**
* 将大端序的 8 字节数组转换为 long
*/
public static long bytesToLong(byte[] bytes, int offset) {
if (bytes == null || offset + 8 > bytes.length) {
throw new IllegalArgumentException("Invalid byte array or offset");
}
return ((long) (bytes[offset] & 0xFF) << 56)
| ((long) (bytes[offset + 1] & 0xFF) << 48)
| ((long) (bytes[offset + 2] & 0xFF) << 40)
| ((long) (bytes[offset + 3] & 0xFF) << 32)
| ((long) (bytes[offset + 4] & 0xFF) << 24)
| ((long) (bytes[offset + 5] & 0xFF) << 16)
| ((long) (bytes[offset + 6] & 0xFF) << 8)
| ((long) (bytes[offset + 7] & 0xFF));
}
}

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@ -6966,7 +6966,7 @@ public class SydApi4j implements SydApi {
int isLast = bb.get();
byte[] dataLenArr = new byte[2];
bb.get(dataLenArr);
int dataLen = ByteUtil.bytesToInt(dataLenArr, ByteOrder.BIG_ENDIAN);
int dataLen = ByteUtil.bytesToShort(dataLenArr, ByteOrder.BIG_ENDIAN);
// byte[] data = new byte[dataLen];
// bb.get(data);
ByteBuffer slice = ByteBufferUtil.sliceAndConsume(bb, dataLen);
@ -7097,7 +7097,7 @@ public class SydApi4j implements SydApi {
int isLast = bb.get();
byte[] dataLenArr = new byte[2];
bb.get(dataLenArr);
int dataLen = ByteUtil.bytesToInt(dataLenArr, ByteOrder.BIG_ENDIAN);
int dataLen = ByteUtil.bytesToShort(dataLenArr, ByteOrder.BIG_ENDIAN);
ByteBuffer slice = ByteBufferUtil.sliceAndConsume(bb, dataLen);
return new MutiReturn7(retCode, isLast, slice);
} else {

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@ -16,7 +16,10 @@ public class FunctionTest {
private byte[] publicKey4Sign;
private byte[] privateKey4Ende;
private byte[] publicKey4Ende;
private byte[] orgData = new byte[15];
private byte[] orgData = new byte[1024];
private byte[] orgData2K = new byte[ 2 * 1024 ];
private byte[] orgData2M = new byte[ 2 * 1024 * 1024 ];
private byte[] orgData10M = new byte[ 4 * 1024 * 1024 - 1024];
private String sign;
@Before
@ -26,7 +29,7 @@ public class FunctionTest {
System.setProperty("com.sunyard.sydapi4j.debug", "true");
// 建立链接单台
this.api = (SydApi4j) new SydApi4j().connect("192.168.100.145", 8889, null, 5000);
this.api = (SydApi4j) new SydApi4j().connect("192.168.100.145", 8889, null, 30000);
// RetWrap keypair = this.getPrivateKeyAndPublickKey(keypairIndex4Sign);
// this.publicKey4Sign = Util.hexString2Bytes( keypair.get("pk").toString() );
@ -103,6 +106,33 @@ public class FunctionTest {
byte[] deData = this.api.SYD_SM2Decrypt(privateKey4Ende, enData);
Assert.assertArrayEquals(orgData, deData);
}
@Test
public void SYD_SM2_Encrypt_2K(){
byte[] enData = this.api.SYD_SM2Encrypt(publicKey4Ende, orgData2K);
System.out.println("密文=" + Util.bytes2HexString(enData));
byte[] deData = this.api.SYD_SM2Decrypt(privateKey4Ende, enData);
Assert.assertArrayEquals(orgData2K, deData);
}
@Test
public void SYD_SM2_Encrypt_2M(){
byte[] enData = this.api.SYD_SM2Encrypt(publicKey4Ende, orgData2M);
System.out.println("密文=" + Util.bytes2HexString(enData));
byte[] deData = this.api.SYD_SM2Decrypt(privateKey4Ende, enData);
Assert.assertArrayEquals(orgData2M, deData);
}
@Test
public void SYD_SM2_Encrypt_10M(){
byte[] enData = this.api.SYD_SM2Encrypt(publicKey4Ende, orgData10M);
System.out.println("密文=" + Util.bytes2HexString(enData));
byte[] deData = this.api.SYD_SM2Decrypt(privateKey4Ende, enData);
Assert.assertArrayEquals(orgData10M, deData);
}
}