Pufferencrypted archive (.puf)
.puf file signature | application/octet-stream
Pufferencrypted archive
Magic Bytes
Offset 0
50 55 46 58
Sources: Gary Kessler
Extension
.puf
MIME Type
application/octet-stream
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .puf files in Python
def is_puf(file_path: str) -> bool:
"""Check if file is a valid PUF by magic bytes."""
signature = bytes([0x50, 0x55, 0x46, 0x58])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .puf files in Node.js
function isPUF(buffer: Buffer): boolean {
const signature = Buffer.from([0x50, 0x55, 0x46, 0x58]);
return buffer.subarray(0, 4).equals(signature);
}How to validate .puf files in Go
func IsPUF(data []byte) bool {
signature := []byte{0x50, 0x55, 0x46, 0x58}
if len(data) < 4 {
return false
}
return bytes.Equal(data[:4], signature)
}API Endpoint
/api/v1/puf
curl https://filesignature.org/api/v1/puf
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .puf file?
A .puf file is a Pufferencrypted archive file. Pufferencrypted archive
What are the magic bytes for .puf files?
The magic bytes for Pufferencrypted archive files are 50 55 46 58 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .puf file?
To validate a .puf file, read the first bytes of the file and compare them against the known magic bytes (50 55 46 58) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .puf files?
There is no officially registered MIME type for .puf files. Systems typically use application/octet-stream as a generic fallback when handling this format.
Is it safe to open .puf files?
Pufferencrypted archive (.puf) 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.