打包签名验签

2022-06-24 11:52:03 +08:00
parent 0c13d0c38a
commit 6cb3072453
6 changed files with 271 additions and 33 deletions
@@ -0,0 +1,67 @@
+package com.sunyard.util;
+
+import cn.hutool.core.bean.BeanUtil;
+import com.sunyard.RetWrap;
+import com.sunyard.proto.R;
+import com.sunyard.proto.Util;
+import org.bouncycastle.asn1.*;
+
+import java.io.IOException;
+
+
+public class ASN1Util {
+
+
+    public static RetWrap takeOutOriginDataFromPKCS7Sign(String sign) throws IOException {
+        RetWrap ret = new RetWrap();
+
+        ASN1Sequence seq = ASN1Sequence.getInstance(  Util.decodeBase64( sign ) );
+        ASN1TaggedObject tag = (ASN1TaggedObject) seq.getObjectAt(1).toASN1Primitive();
+        ASN1Sequence seq2 = (ASN1Sequence) tag.getObject();
+        ASN1Sequence seq3 = (ASN1Sequence) seq2.getObjectAt( 2 ).toASN1Primitive();
+        ASN1TaggedObject tag2 = (ASN1TaggedObject) seq3.getObjectAt( 1 );
+        DEROctetString o = (DEROctetString) tag2.getObject();
+        ret.put( "orgData", o.getOctets() );
+
+
+        ASN1TaggedObject tag3 = (ASN1TaggedObject) seq2.getObjectAt(3).toASN1Primitive();
+        ASN1Sequence seq4 = (ASN1Sequence) tag3.getObject();
+        ret.put("cert", CertUtil.encodeBase64(seq4.getEncoded()));
+
+        ASN1Sequence seq5 = (ASN1Sequence) seq4.getObjectAt( 0 ).toASN1Primitive();
+        ASN1Sequence seq6 = (ASN1Sequence) seq5.getObjectAt( 6 ).toASN1Primitive();
+        DERBitString pk = (DERBitString) seq6.getObjectAt( 1 ).toASN1Primitive();
+        ret.put("pk", pk.getEncoded() );
+
+        ASN1Encodable[] elements = seq3.toArray();
+        ASN1Encodable[] elements2 = new ASN1Encodable[ elements.length - 1];
+        for ( int i = 0; i < elements.length -1 ; i++ ){
+            elements2[i] = elements[i];
+        }
+
+        BeanUtil.setProperty(  seq3,  "elements", elements2);
+
+        ret.put("sign", Util.encodeBase64(seq.getEncoded()) );
+        return ret;
+    }
+
+    public static String addOriginDataToPKCS7Sign( byte[] originData, String sign) throws IOException {
+        ASN1Sequence seq = ASN1Sequence.getInstance(  Util.decodeBase64( sign ) );
+        ASN1TaggedObject tag = (ASN1TaggedObject) seq.getObjectAt(1).toASN1Primitive();
+        ASN1Sequence seq2 = (ASN1Sequence) tag.getObject();
+        ASN1Sequence seq3 = (ASN1Sequence) seq2.getObjectAt( 2 ).toASN1Primitive();
+
+        ASN1Encodable[] elements = seq3.toArray();
+        ASN1Encodable[] elements2 = new ASN1Encodable[ elements.length + 1];
+        for ( int i = 0; i < elements.length ; i++ ){
+            elements2[i] = elements[i];
+        }
+
+        elements2[ elements.length ] = new DERTaggedObject(true, 0, new DEROctetString( originData ));
+
+        BeanUtil.setProperty(  seq3,  "elements", elements2);
+
+        return Util.encodeBase64(seq.getEncoded());
+    }
+
+}
@@ -0,0 +1,9 @@
+package com.sunyard.util;
+
+import sun.misc.BASE64Encoder;
+
+public class CertUtil {
+    public static String encodeBase64(byte[] data){
+        return new BASE64Encoder().encode( data );
+    }
+}