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三类模式写

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This commit is contained in:
cheney
2022-09-08 16:18:39 +08:00
parent ce43b10cc6
commit c563ef91d3
9 changed files with 68 additions and 310 deletions
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src/main/java/com/sunyard/sge/database/SydSM4Backup.java
+186
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package com.sunyard.sge.database;
import com.sunyard.SydApiException;
import com.sunyard.proto.Util;
import java.nio.ByteBuffer;
public class SydSM4Backup {
private SydApi api;
private int iKeyIndex;
private byte[] pcdataResult = new byte[0];
private int iPkgNum = 1;
private int iFlag;
private boolean is_finished = false;
private byte[] dataResult = new byte[0];
ByteBuffer sourceWrap = ByteBuffer.wrap(new byte[0]);
public SydSM4Backup(SydApi api, int iKeyIndex, int endeFlag) {
this.api = api;
this.iFlag = endeFlag;
this.iKeyIndex = iKeyIndex;
}
public byte[] update(byte[] pcData) {
this.pcdataResult = pcData;
// this.dataResult = pcData;
if (null == pcData || pcData.length == 0) {
return new byte[0];
}
int plength = pcData.length;
if (is_finished) {
throw new SydApiException(0);
}
if (plength > 4064) {
throw new SydApiException(0);
}
if (iFlag == 1) {
if (0 == sourceWrap.array().length) {
//加密
if (plength < 16) {
ByteBuffer bufferResult = ByteBuffer.allocate(sourceWrap.array().length + plength);
bufferResult.put(sourceWrap);
bufferResult.put(pcData);
sourceWrap = bufferResult;
return new byte[0];
}
if (plength % 16 != 0) {
ByteBuffer buffer = ByteBuffer.wrap(pcData);
int remainder = plength % 16;
int intercept = plength - remainder;
byte[] bytes = new byte[intercept];
ByteBuffer byteBuffer = buffer.get(bytes, 0, intercept);
byte[] bytes1 = new byte[remainder];
byteBuffer.get(bytes1);
this.pcdataResult = bytes;
ByteBuffer bufferResult = ByteBuffer.allocate(sourceWrap.array().length + remainder);
bufferResult.put(bytes1);
sourceWrap = bufferResult;
}
byte[] bytes = api.SYD_SM4_LongData(iKeyIndex, pcdataResult, iPkgNum, iFlag);
iPkgNum = 2;
return bytes;
} else {
if (16 > pcData.length + sourceWrap.array().length) {
ByteBuffer bufferResult = ByteBuffer.allocate(sourceWrap.array().length + plength);
bufferResult.put(sourceWrap.array());
bufferResult.put(pcData);
sourceWrap = bufferResult;
return new byte[0];
} else if ((pcData.length + sourceWrap.array().length) % 16 == 0) {
ByteBuffer bufferResult = ByteBuffer.allocate(sourceWrap.array().length + plength);
bufferResult.put(sourceWrap.array());
bufferResult.put(pcData);
byte[] bytes = SydSM4Mac.bytebuffer2ByteArray(bufferResult);
byte[] bytes1 = api.SYD_SM4_LongData(iKeyIndex, bytes, iPkgNum, iFlag);
iPkgNum = 2;
return bytes1;
} else {
ByteBuffer bufferResult = ByteBuffer.allocate(sourceWrap.array().length + plength);
bufferResult.put(sourceWrap.array());
bufferResult.put(pcData);
byte[] bytes = SydSM4Mac.bytebuffer2ByteArray(bufferResult);
ByteBuffer buffer = ByteBuffer.wrap(bytes);
int remainder = bytes.length % 16;
int intercept = bytes.length - remainder;
byte[] pcdataByte = new byte[intercept];
ByteBuffer byteBuffer = buffer.get(pcdataByte, 0, intercept);
byte[] bytes1 = new byte[remainder];
byteBuffer.get(bytes1);
this.pcdataResult = pcdataByte;
ByteBuffer bufferResults = ByteBuffer.allocate(remainder);
bufferResults.put(bytes1);
sourceWrap = bufferResults;
byte[] bytes2 = api.SYD_SM4_LongData(iKeyIndex, pcdataResult, iPkgNum, iFlag);
iPkgNum = 2;
return bytes2;
}
}
}
else {
ByteBuffer nSourceWrap = ByteBuffer.allocate( sourceWrap.array().length + pcData.length );
byte[] waitData = sourceWrap.array();
nSourceWrap.put( waitData );
nSourceWrap.put( pcData );
sourceWrap = nSourceWrap;
System.out.println("new sourceWrap=" + Util.bytes2HexString(sourceWrap.array()));
int totalLen = sourceWrap.array().length;
if ( totalLen / 16 < 2){
return new byte[0];
}
int com = totalLen % 16;
int sendBuffLen = totalLen - com -16;
byte[] sendBuff = new byte[sendBuffLen];
sourceWrap.position(0);
sourceWrap.get( sendBuff , 0, sendBuff.length );
byte[] waitBuff = new byte[ totalLen - sendBuffLen ];
sourceWrap.get( waitBuff , 0, waitBuff.length );
System.out.println( String.format("debug inDataLen=%d totalDataLen=%d sendDataLen=%d 16=%d iPkgNum=%d",
pcData.length,
totalLen,
sendBuff.length,
sendBuff.length % 16,
iPkgNum)
);
System.out.println( "waitBuff=" + Util.bytes2HexString( waitBuff ) );
if( 0x00 == waitBuff[0] ) {
System.out.println("eee");
}
sourceWrap = ByteBuffer.wrap( waitBuff );
System.out.println("sourceWrap=" + Util.bytes2HexString(sourceWrap.array()));
byte[] bytes2 = api.SYD_SM4_LongData(iKeyIndex, sendBuff, iPkgNum, iFlag);
iPkgNum = 2;
return bytes2;
}
}
public byte[] finish() {
if (is_finished) {
throw new SydApiException(0);
}
this.is_finished = true;
if (1 == this.iPkgNum) {
this.iPkgNum = 0;
} else if (2 == this.iPkgNum) {
this.iPkgNum = 3;
}
if (iFlag == 0){
byte[] d = sourceWrap.array();
byte[] bytes = api.SYD_SM4_LongData(iKeyIndex,d, iPkgNum, iFlag);
sourceWrap = null;
return bytes;
}
byte[] bytes = api.SYD_SM4_LongData(iKeyIndex,sourceWrap.array(), iPkgNum, iFlag);
sourceWrap = null;
return bytes;
}
public ByteBuffer bufferResult(int plength, byte[] pcData) {
ByteBuffer bufferResult = ByteBuffer.allocate(sourceWrap.array().length + plength);
bufferResult.put(sourceWrap);
bufferResult.put(pcData);
return bufferResult;
}
}