Logical File Evidence Format (.lxnn)
.lxnn file signature | application/octet-stream
Logical File Evidence Format is a segmented digital evidence file format originally developed by Guidance Software for the EnCase forensic platform and now maintained within OpenText Forensics. It is used to store logical acquisitions, case data, and related forensic evidence for review, analysis, and long-term investigation workflows. The format is primarily historical and remains relevant in legacy forensic archives; files should be handled carefully to preserve chain of custody and verify integrity.
Magic Bytes
Offset 0
4C 45 46 32 0D 0A 82 00
Sources: Gary Kessler
Extension
.lxnn
MIME Type
application/octet-stream
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .lxnn files in Python
def is_lxnn(file_path: str) -> bool:
"""Check if file is a valid LXNN by magic bytes."""
signature = bytes([0x4C, 0x45, 0x46, 0x32, 0x0D, 0x0A, 0x82, 0x00])
with open(file_path, "rb") as f:
return f.read(8) == signatureHow to validate .lxnn files in Node.js
function isLXNN(buffer: Buffer): boolean {
const signature = Buffer.from([0x4C, 0x45, 0x46, 0x32, 0x0D, 0x0A, 0x82, 0x00]);
return buffer.subarray(0, 8).equals(signature);
}How to validate .lxnn files in Go
func IsLXNN(data []byte) bool {
signature := []byte{0x4C, 0x45, 0x46, 0x32, 0x0D, 0x0A, 0x82, 0x00}
if len(data) < 8 {
return false
}
return bytes.Equal(data[:8], signature)
}API Endpoint
/api/v1/lxnn
curl https://filesignature.org/api/v1/lxnn
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .lxnn file?
A .lxnn file is a Logical File Evidence Format file. Logical File Evidence Format is a segmented digital evidence file format originally developed by Guidance Software for the EnCase forensic platform and now maintained within OpenText Forensics. It is used to store logical acquisitions, case data, and related forensic evidence for review, analysis, and long-term investigation workflows. The format is primarily historical and remains relevant in legacy forensic archives; files should be handled carefully to preserve chain of custody and verify integrity.
What are the magic bytes for .lxnn files?
The magic bytes for Logical File Evidence Format files are 4C 45 46 32 0D 0A 82 00 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .lxnn file?
To validate a .lxnn file, read the first bytes of the file and compare them against the known magic bytes (4C 45 46 32 0D 0A 82 00) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .lxnn files?
There is no officially registered MIME type for .lxnn files. Systems typically use application/octet-stream as a generic fallback when handling this format.
Is it safe to open .lxnn files?
Logical File Evidence Format (.lxnn) files are generally safe to open. They are classified as low risk because they primarily contain data rather than executable code. However, always ensure files come from a trusted source.