xor

package

v0.6.1 Latest Latest Go to latest Published: Sep 27, 2022 License: BSD-3-Clause Imports: 3 Imported by: 0

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Repository

github.com/fzipp/gg

Links

Open Source Insights

Documentation ¶

Constants ¶

This section is empty.

Variables ¶

View Source

var DefaultKey = KnownKeys["56ad"]

It is the default key since the author of this package happens to have only ggpack files encrypted with this key.

View Source

var KnownKeys = map[string]Key{
	"5b6d": &twp.Key{
		MagicBytes: []byte{
			0x4F, 0xD0, 0xA0, 0xAC, 0x4A, 0x5B, 0xB9, 0xE5,
			0x93, 0x79, 0x45, 0xA5, 0xC1, 0xCB, 0x31, 0x93,
		},
		Multiplier: 0x6D,
	},
	"566d": &twp.Key{
		MagicBytes: []byte{
			0x4F, 0xD0, 0xA0, 0xAC, 0x4A, 0x56, 0xB9, 0xE5,
			0x93, 0x79, 0x45, 0xA5, 0xC1, 0xCB, 0x31, 0x93,
		},
		Multiplier: 0x6D,
	},
	"5bad": &twp.Key{
		MagicBytes: []byte{
			0x4F, 0xD0, 0xA0, 0xAC, 0x4A, 0x5B, 0xB9, 0xE5,
			0x93, 0x79, 0x45, 0xA5, 0xC1, 0xCB, 0x31, 0x93,
		},
		Multiplier: 0xAD,
	},
	"56ad": &twp.Key{
		MagicBytes: []byte{
			0x4F, 0xD0, 0xA0, 0xAC, 0x4A, 0x56, 0xB9, 0xE5,
			0x93, 0x79, 0x45, 0xA5, 0xC1, 0xCB, 0x31, 0x93,
		},
		Multiplier: 0xAD,
	},
	"delores": &twp.Key{
		MagicBytes: []byte{
			0x3F, 0x41, 0x41, 0x60, 0x95, 0x87, 0x4A, 0xE6,
			0x34, 0xC6, 0x3A, 0x86, 0x29, 0x27, 0x77, 0x8D,
			0x38, 0xB4, 0x96, 0xC9, 0x38, 0xB4, 0x96, 0xC9,
			0x00, 0xE0, 0x0A, 0xC6, 0x00, 0xE0, 0x0A, 0xC6,
			0x00, 0x3C, 0x1C, 0xC6, 0x00, 0x3C, 0x1C, 0xC6,
			0x00, 0xE4, 0x40, 0xC6, 0x00, 0xE4, 0x40, 0xC6,
		},
		Multiplier: 0x6D,
	},
	"rtmi": &rtmi.Key{
		Modifier: 0x78,
	},
}

KnownKeys is a collection of XOR keys for ggpack files found in the wild. These keys differ slightly at MagicBytes[5] (0x5B vs. 0x56) and regarding the multiplier (0x6D vs. 0xAD). This is reflected in the names (e.g. "56ad") by which they can be referenced.

Functions ¶

This section is empty.

Types ¶

type Key ¶

type Key interface {
	DecodingReader(r io.Reader, expectedSize int64) io.Reader
	EncodingWriter(w io.Writer, expectedSize int64) io.Writer
	NeedsLoading() bool
	LoadFrom(execFile string) error
	UsesShortKeyIndices() bool
}

Key is an XOR key for ggpack files.

Source Files ¶

View all Source files

key.go

Directories ¶

Path	Synopsis
rtmi Package rtmi encodes/decodes data with XOR encryption as used by Return to Monkey Island.	Package rtmi encodes/decodes data with XOR encryption as used by Return to Monkey Island.
twp Package twp encodes/decodes data with XOR encryption as used by Thimbleweed Park and Delores games.	Package twp encodes/decodes data with XOR encryption as used by Thimbleweed Park and Delores games.

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