Sunyard/sydapi-java-sge-database
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增加init/update/digest/finish长数据操作

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This commit is contained in:
junj2.liang 2022-09-01 14:18:35 +08:00
parent a5f38b4a8f
commit 6ff2df3857
1 changed files with 130 additions and 55 deletions
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83
src/main/java/com/sunyard/sge/database/SydApiSM4.java
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@ -13,6 +13,7 @@ public class SydApiSM4 {
private int iFlag;
private boolean is_finished = false;
private byte[] dataResult = new byte[0];
ByteBuffer sourceWrap = ByteBuffer.wrap(new byte[0]);
@ -35,13 +36,10 @@ public class SydApiSM4 {
if (plength > 4064) {
throw new SydApiException(0);
}
if (iFlag == 1) {
if (0 == sourceWrap.array().length) {
//加密
if (plength < 16) {
api.SYD_SM4_LongData(iKeyIndex, new byte[0], iPkgNum, iFlag);
if (iFlag == 0 && 1 == iPkgNum) {
throw new SydApiException("解密的首包不能小于 16 字节", 0);
}
ByteBuffer bufferResult = ByteBuffer.allocate(sourceWrap.array().length + plength);
bufferResult.put(sourceWrap);
bufferResult.put(pcData);
@ -60,6 +58,7 @@ public class SydApiSM4 {
bufferResult.put(bytes1);
sourceWrap = bufferResult;
}
iPkgNum = 2;
return api.SYD_SM4_LongData(iKeyIndex, pcdataResult, iPkgNum, iFlag);
@ -97,6 +96,73 @@ public class SydApiSM4 {
}
}
}
else {
if (0 == sourceWrap.array().length) {
if (plength<16){
api.SYD_SM4_LongData(iKeyIndex, new byte[0], iPkgNum, iFlag);
ByteBuffer bufferResult = ByteBuffer.allocate(sourceWrap.array().length + plength);
bufferResult.put(sourceWrap);
bufferResult.put(pcData);
sourceWrap = bufferResult;
}
ByteBuffer buffer = ByteBuffer.wrap(pcData);
int remainder = plength % 16;
int intercept = plength - remainder - 16;
byte[] bytes = new byte[intercept];
ByteBuffer byteBuffer = buffer.get(bytes, 0, intercept);
byte[] bytes1 = new byte[remainder];
byteBuffer.get(bytes1);
byte[] bytes2 = new byte[16];
ByteBuffer byte1 = buffer.get(bytes2,0,16);
dataResult=bytes2;
this.pcdataResult = bytes;
ByteBuffer bufferResult = ByteBuffer.allocate(sourceWrap.array().length + remainder);
bufferResult.put(bytes1);
sourceWrap = bufferResult;
iPkgNum = 2;
return api.SYD_SM4_LongData(iKeyIndex, pcdataResult, iPkgNum, iFlag);
} 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);
return api.SYD_SM4_LongData(iKeyIndex, bytes, iPkgNum, iFlag);
} 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 - 16;
byte[] pcdataByte = new byte[intercept];
ByteBuffer byteBuffer = buffer.get(pcdataByte, 0, intercept);
byte[] bytes1 = new byte[remainder];
byteBuffer.get(bytes1);
byte[] bytes2 = new byte[16];
ByteBuffer byteBuffer2 = buffer.get(bytes2, 0, 16);
this.dataResult = bytes2;
this.pcdataResult = pcdataByte;
ByteBuffer bufferResults = ByteBuffer.allocate(remainder);
bufferResults.put(bytes1);
sourceWrap = bufferResults;
iPkgNum = 2;
return api.SYD_SM4_LongData(iKeyIndex, pcdataResult, iPkgNum, iFlag);
}
}
}
}
public byte[] finish() {
if (is_finished) {
@ -109,6 +175,15 @@ public class SydApiSM4 {
this.iPkgNum = 3;
}
if (iFlag == 0){
ByteBuffer buffer = ByteBuffer.allocate(dataResult.length+sourceWrap.array().length);
buffer.put(dataResult);
buffer.put(sourceWrap.array());
byte[] bytes = api.SYD_SM4_LongData(iKeyIndex,buffer.array(), iPkgNum, iFlag);
sourceWrap = null;
return bytes;
}
byte[] bytes = api.SYD_SM4_LongData(iKeyIndex,sourceWrap.array(), iPkgNum, iFlag);
sourceWrap = null;
return bytes;