PufferASCII-armored encrypted archive
application/octet-stream
Magic Bytes
Offset: 0
42 6C 69 6E 6B 20 62 79 20 44 2E 54 2E 53
The Puffer ASCII-armored encrypted archive is a legacy file format developed by the Puffer encryption utility for secure data storage. This format converts binary encrypted data into text-based ASCII characters to facilitate safe transmission via email systems and early bulletin board services. While once widely utilized for personal privacy, the format is now considered obsolete as modern cryptographic standards and specialized archival tools have superseded its functionality.
Validation Code
How to validate .apuf files in Python
def is_apuf(file_path: str) -> bool:
"""Check if file is a valid APUF by magic bytes."""
signature = bytes([0x42, 0x6C, 0x69, 0x6E, 0x6B, 0x20, 0x62, 0x79, 0x20, 0x44, 0x2E, 0x54, 0x2E, 0x53])
with open(file_path, "rb") as f:
return f.read(14) == signatureHow to validate .apuf files in Node.js
function isAPUF(buffer: Buffer): boolean {
const signature = Buffer.from([0x42, 0x6C, 0x69, 0x6E, 0x6B, 0x20, 0x62, 0x79, 0x20, 0x44, 0x2E, 0x54, 0x2E, 0x53]);
return buffer.subarray(0, 14).equals(signature);
}How to validate .apuf files in Go
func IsAPUF(data []byte) bool {
signature := []byte{0x42, 0x6C, 0x69, 0x6E, 0x6B, 0x20, 0x62, 0x79, 0x20, 0x44, 0x2E, 0x54, 0x2E, 0x53}
if len(data) < 14 {
return false
}
return bytes.Equal(data[:14], signature)
}API Endpoint
/api/v1/apuf
curl https://filesignature.org/api/v1/apuf
Related Formats
Frequently Asked Questions
What is a .apuf file?
A .apuf file is a PufferASCII-armored encrypted archive file. The Puffer ASCII-armored encrypted archive is a legacy file format developed by the Puffer encryption utility for secure data storage. This format converts binary encrypted data into text-based ASCII characters to facilitate safe transmission via email systems and early bulletin board services. While once widely utilized for personal privacy, the format is now considered obsolete as modern cryptographic standards and specialized archival tools have superseded its functionality.
What are the magic bytes for .apuf files?
The magic bytes for PufferASCII-armored encrypted archive files are 42 6C 69 6E 6B 20 62 79 20 44 2E 54 2E 53 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .apuf file?
To validate a .apuf file, read the first bytes of the file and compare them against the known magic bytes (42 6C 69 6E 6B 20 62 79 20 44 2E 54 2E 53) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .apuf files?
The primary MIME type for .apuf files is application/octet-stream.
Is it safe to open .apuf files?
PufferASCII-armored encrypted archive (.apuf) 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.