ELF (.elf)
.elf file signature | application/octet-stream
Executable and Linkable Format[25]
Magic Bytes
Offset 0
7F 45 4C 46
Sources: Wikipedia
Extension
.elf
MIME Type
application/octet-stream
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .elf files in Python
def is_elf(file_path: str) -> bool:
"""Check if file is a valid ELF by magic bytes."""
signature = bytes([0x7F, 0x45, 0x4C, 0x46])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .elf files in Node.js
function isELF(buffer: Buffer): boolean {
const signature = Buffer.from([0x7F, 0x45, 0x4C, 0x46]);
return buffer.subarray(0, 4).equals(signature);
}How to validate .elf files in Go
func IsELF(data []byte) bool {
signature := []byte{0x7F, 0x45, 0x4C, 0x46}
if len(data) < 4 {
return false
}
return bytes.Equal(data[:4], signature)
}API Endpoint
/api/v1/elf
curl https://filesignature.org/api/v1/elf
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .elf file?
A .elf file is a ELF file. Executable and Linkable Format[25]
What are the magic bytes for .elf files?
The magic bytes for ELF files are 7F 45 4C 46 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .elf file?
To validate a .elf file, read the first bytes of the file and compare them against the known magic bytes (7F 45 4C 46) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .elf files?
There is no officially registered MIME type for .elf files. Systems typically use application/octet-stream as a generic fallback when handling this format.
Is it safe to open .elf files?
ELF (.elf) 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.