java 对apk 文件进行伪加密，然后进行字节码变换的工具，可运行的源代码

package com.ljt.apk; class ZipConstants { /* * Compression methods */ static final int METHOD_STORED = 0; static final int METHOD_DEFLATED = 8; static final int METHOD_DEFLATED64 = 9; static final int METHOD_BZIP2 = 12; static final int METHOD_LZMA = 14; static final int METHOD_LZ77 = 19; static final int METHOD_AES = 99; /* * General purpose big flag */ static final int FLAG_ENCRYPTED = 0x01; static final int FLAG_DATADESCR = 0x08; // crc, size and csize in dd static final int FLAG_EFS = 0x800; // If this bit is set the filename and // comment fields for this file must be // encoded using UTF-8. /* * Header signatures */ static long LOCSIG = 0x04034b50L; // "PK\003\004" static long EXTSIG = 0x08074b50L; // "PK\007\008" static long CENSIG = 0x02014b50L; // "PK\001\002" static long ENDSIG = 0x06054b50L; // "PK\005\006" /* * Header sizes in bytes (including signatures) */ static final int LOCHDR = 30; // LOC header size static final int EXTHDR = 16; // EXT header size static final int CENHDR = 46; // CEN header size static final int ENDHDR = 22; // END header size /* * Local file (LOC) header field offsets */ static final int LOCVER = 4; // version needed to extract static final int LOCFLG = 6; // general purpose bit flag static final int LOCHOW = 8; // compression method static final int LOCTIM = 10; // modification time static final int LOCCRC = 14; // uncompressed file crc-32 value static final int LOCSIZ = 18; // compressed size static final int LOCLEN = 22; // uncompressed size static final int LOCNAM = 26; // filename length static final int LOCEXT = 28; // extra field length /* * Extra local (EXT) header field offsets */ static final int EXTCRC = 4; // uncompressed file crc-32 value static final int EXTSIZ = 8; // compressed size static final int EXTLEN = 12; // uncompressed size /* * Central directory (CEN) header field offsets */ static final int CENVEM = 4; // version made by static final int CENVER = 6; // version needed to extract static final int CENFLG = 8; // encrypt, decrypt flags static final int CENHOW = 10; // compression method static final int CENTIM = 12; // modification time static final int CENCRC = 16; // uncompressed file crc-32 value static final int CENSIZ = 20; // compressed size static final int CENLEN = 24; // uncompressed size static final int CENNAM = 28; // filename length static final int CENEXT = 30; // extra field length static final int CENCOM = 32; // comment length static final int CENDSK = 34; // disk number start static final int CENATT = 36; // internal file attributes static final int CENATX = 38; // external file attributes static final int CENOFF = 42; // LOC header offset /* * End of central directory (END) header field offsets */ static final int ENDSUB = 8; // number of entries on this disk static final int ENDTOT = 10; // total number of entries static final int ENDSIZ = 12; // central directory size in bytes static final int ENDOFF = 16; // offset of first CEN header static final int ENDCOM = 20; // zip file comment length /* * ZIP64 constants */ static final long ZIP64_ENDSIG = 0x06064b50L; // "PK\006\006" static final long ZIP64_LOCSIG = 0x07064b50L; // "PK\006\007" static final int ZIP64_ENDHDR = 56; // ZIP64 end header size static final int ZIP64_LOCHDR = 20; // ZIP64 end loc header size static final int ZIP64_EXTHDR = 24; // EXT header size static final int ZIP64_EXTID = 0x0001; // Extra field Zip64 header ID static final int ZIP64_MINVAL32 = 0xFFFF; static final long ZIP64_MINVAL = 0xFFFFFFFFL; /* * Zip64 End of central directory (END) header field offsets */ static final int ZIP64_ENDLEN = 4; // size of zip64 end of central dir static final int ZIP64_ENDVEM = 12; // version made by static final int ZIP64_ENDVER = 14; // version needed to extract static final int ZIP64_ENDNMD = 16; // number of this disk static final int ZIP64_ENDDSK = 20; // disk number of start static final int ZIP64_ENDTOD = 24; // total number of entries on this disk static final int ZIP64_ENDTOT = 32; // total number of entries static final int ZIP64_ENDSIZ = 40; // central directory size in bytes static final int ZIP64_ENDOFF = 48; // offset of first CEN header static final int ZIP64_ENDEXT = 56; // zip64 extensible data sector /* * Zip64 End of central directory locator field offsets */ static final int ZIP64_LOCDSK = 4; // disk number start static final int ZIP64_LOCOFF = 8; // offset of zip64 end static final int ZIP64_LOCTOT = 16; // total number of disks /* * Zip64 Extra local (EXT) header field offsets */ static final int ZIP64_EXTCRC = 4; // uncompressed file crc-32 value static final int ZIP64_EXTSIZ = 8; // compressed size, 8-byte static final int ZIP64_EXTLEN = 16; // uncompressed size, 8-byte /* * Extra field header ID */ static final int EXTID_ZIP64 = 0x0001; // ZIP64 static final int EXTID_NTFS = 0x000a; // NTFS static final int EXTID_UNIX = 0x000d; // UNIX static final int EXTID_EFS = 0x0017; // Strong Encryption static final int EXTID_EXTT = 0x5455; // Info-ZIP Extended Timestamp /* * fields access methods */ /////////////////////////////////////////////////////// static final int CH(byte[] b, int n) { return b[n] & 0xff; } static final int SH(byte[] b, int n) { return (b[n] & 0xff) | ((b[n + 1] & 0xff) << 8); } static final long LG(byte[] b, int n) { return ((SH(b, n)) | (SH(b, n + 2) << 16)) & 0xffffffffL; } static final long LL(byte[] b, int n) { return (LG(b, n)) | (LG(b, n + 4) << 32); } static final long GETSIG(byte[] b) { return LG(b, 0); } // local file (LOC) header fields static final long LOCSIG(byte[] b) { return LG(b, 0); } // signature static final int LOCVER(byte[] b) { return SH(b, 4); } // version needed to extract static final int LOCFLG(byte[] b) { return SH(b, 6); } // general purpose bit flags static final int LOCHOW(byte[] b) { return SH(b, 8); } // compression method static final long LOCTIM(byte[] b) { return LG(b, 10);} // modification time static final long LOCCRC(byte[] b) { return LG(b, 14);} // crc of uncompressed data static final long LOCSIZ(byte[] b) { return LG(b, 18);} // compressed data size static final long LOCLEN(byte[] b) { return LG(b, 22);} // uncompressed data size static final int LOCNAM(byte[] b) { return SH(b, 26);} // filename length static final int LOCEXT(byte[] b) { return SH(b, 28);} // extra field length // extra local (EXT) header fields static final long EXTCRC(byte[] b) { return LG(b, 4);} // crc of uncompressed data static final long EXTSIZ(byte[] b) { return LG(b, 8);} // compressed size static final long EXTLEN(byte[] b) { return LG(b, 12);} // uncompressed size /