Class ZipUtils

Inflates either zlib or gzip deflated memory. The inflated memory is expected to be freed by the caller.

It will allocate 256k for the destination buffer. If it is not enough it will multiply the previous buffer size per 2, until there is enough memory.

Inflates either zlib or gzip deflated memory. The inflated memory is expected to be freed by the caller.

outLenghtHint is assumed to be the needed room to allocate the inflated buffer.

inflates a GZip file into memory

inflates a CCZ file into memory

Sets the pvr.ccz encryption key parts separately for added security.

Example: If the key used to encrypt the pvr.ccz file is 0xaaaaaaaabbbbbbbbccccccccdddddddd you will call this function 4 different times, preferably from 4 different source files, as follows

ZipUtils::ccSetPvrEncryptionKeyPart(0, 0xaaaaaaaa); ZipUtils::ccSetPvrEncryptionKeyPart(1, 0xbbbbbbbb); ZipUtils::ccSetPvrEncryptionKeyPart(2, 0xcccccccc); ZipUtils::ccSetPvrEncryptionKeyPart(3, 0xdddddddd);

Splitting the key into 4 parts and calling the function from 4 different source files increases the difficulty to reverse engineer the encryption key. Be aware that encrpytion is never 100% secure and the key code can be cracked by knowledgable persons.

IMPORTANT: Be sure to call ccSetPvrEncryptionKey or ccSetPvrEncryptionKeyPart with all of the key parts before loading the spritesheet or decryption will fail and the spritesheet will fail to load.

Sets the pvr.ccz encryption key.

Example: If the key used to encrypt the pvr.ccz file is 0xaaaaaaaabbbbbbbbccccccccdddddddd you will call this function with the key split into 4 parts as follows

ZipUtils::ccSetPvrEncryptionKey(0xaaaaaaaa, 0xbbbbbbbb, 0xcccccccc, 0xdddddddd);

Note that using this function makes it easier to reverse engineer and discover the complete key because the key parts are present in one function call.

IMPORTANT: Be sure to call ccSetPvrEncryptionKey or ccSetPvrEncryptionKeyPart with all of the key parts before loading the spritesheet or decryption will fail and the spritesheet will fail to load.