NONE
application/octet-stream
Magic Bytes
Offset: 0
7F 45 4C 46
Executable and Linkable Format (ELF) is a standard file format for executables, object code, shared libraries, and core dumps, originally developed by Unix System Laboratories and now maintained by various industry groups. It serves as the binary format for Linux distributions and other Unix-like operating systems, facilitating the execution of programs and the linking of library dependencies. Although the format is fundamentally secure, these files carry binary instructions that can execute arbitrary code, necessitating strict verification before execution.
Validation Code
How to validate .none files in Python
Python
def is_none(file_path: str) -> bool:
"""Check if file is a valid NONE by magic bytes."""
signature = bytes([0x7F, 0x45, 0x4C, 0x46])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .none files in Node.js
Node.js
function isNONE(buffer: Buffer): boolean {
const signature = Buffer.from([0x7F, 0x45, 0x4C, 0x46]);
return buffer.subarray(0, 4).equals(signature);
}
Go
func IsNONE(data []byte) bool {
signature := []byte{0x7F, 0x45, 0x4C, 0x46}
if len(data) < 4 {
return false
}
return bytes.Equal(data[:4], signature)
}API Endpoint
GET
/api/v1/none
curl https://filesignature.org/api/v1/none