2.0 - File is a folder (directory)
2.0 - File is compressed using Deflate compression
2.0 - File is encrypted using traditional PKWARE encryption.
v21_DEFLATED64
v21_DEFLATED64 = 21 : int
v25_IMPLODED
v25_IMPLODED = 25 : int
v27_PATCH_DATA
v27_PATCH_DATA = 27 : int
v45_ZIP64_EXT
v45_ZIP64_EXT = 45 : int
v46_BZIP2
v46_BZIP2 = 46 : int
v50_ENCR_DES_3DES_RC2_ORIG_RC4
v50_ENCR_DES_3DES_RC2_ORIG_RC4 = 50 : int
5.0 - File is encrypted using DES
5.0 - File is encrypted using 3DES
5.0 - File is encrypted using original RC2 encryption
5.0 - File is encrypted using RC4 encryption.
v51_ENCR_AES_RC2_CORRECT
v51_ENCR_AES_RC2_CORRECT = 51 : int
5.1 - File is encrypted using AES encryption
5.1 - File is encrypted using corrected RC2 encryption**.
v52_ENCR_RC2_64_CORRECT
v52_ENCR_RC2_64_CORRECT = 52 : int
v61_ENCR_NON_OAE_KEY_WRAP
v61_ENCR_NON_OAE_KEY_WRAP = 61 : int
v62_ENCR_CENTRAL_DIR
v62_ENCR_CENTRAL_DIR = 62 : int
v63_LZMA_PPMD_BLOWFISH_TWOFISH
v63_LZMA_PPMD_BLOWFISH_TWOFISH = 63 : int
6.3 - File is compressed using LZMA
6.3 - File is compressed using PPMd+
6.3 - File is encrypted using Blowfish
6.3 - File is encrypted using Twofish.