1, Yes Yes Yes 2 3 If this bit is set, the fields crc-32, compressed Yes Yes Yes size and uncompressed size are set to zero in the header. The correct values are put in the data descriptor immediately following the compressed data. (PKZIP version 2.04g for DOS only recognizes this bit for method 8 compression, newer versions of PKZIP recognize this bit for any compression method.) 4 Reserved for use with method 8, for enhanced Ignore Bits set to Yes deflating 0 5 If this bit is set, this indicates that the file is Ignore Bits set to Yes compressed patched data. (Requires PKZIP 0 version 2.70 or greater.) 6 Strong encryption. If this bit is set, you should Ignore Bits set to Yes set the version needed to extract value to at 0 least 50 and you must also set bit 0. If AES encryption is used, the version needed to extract value must be at least 51. 7 Currently unused Ignore Bits set to Yes 0 8 Currently unused Ignore Bits set to Yes 0 9 Currently unused Ignore Bits set to Yes 0 10 Currently unused Ignore Bits set to Yes 0 11 Currently unused Ignore Bits set to Yes 0 12 Reserved by PKWARE for enhanced Ignore Bits set to Yes compression 0
1, 2 Yes Yes Yes 3 If this bit is set, the fields crc-32, compressed size and uncompressed size are set to zero in the header. The correct values are put in the data descriptor immediately following the compressed data. (PKZIP version 2.04g for DOS only recognizes this bit for method 8 compression, newer versions of PKZIP recognize this bit for any compression method.) Yes Yes Yes 4 Reserved for use with method 8, for enhanced deflating Ignore Bits set to 0 Yes 5 If this bit is set, this indicates that the file is compressed patched data. (Requires PKZIP version 2.70 or greater.) Ignore Bits set to 0 Yes 6 Strong encryption. If this bit is set, you should set the version needed to extract value to at least 50 and you must also set bit 0. If AES encryption is used, the version needed to extract value must be at least 51. Ignore Bits set to 0 Yes 7 Currently unused Ignore Bits set to 0 Yes 8 Currently unused Ignore Bits set to 0 Yes 9 Currently unused Ignore Bits set to 0 Yes 10 Currently unused Ignore Bits set to 0 Yes 11 Currently unused Ignore Bits set to 0 Yes 12 Reserved by PKWARE for enhanced compression Ignore Bits set to 0 Yes
Office%20Open%20XML%20Part%202%20-%20Open%20Packaging%20Conventions_final.docx