BAC (.bac)
.bac file signature | application/octet-stream
AmiBackAmigaBackupdata file
Magic Bytes
Offset 0
42 41 43 4B 4D 49 4B 45 44 49 53 4B
Sources: Wikipedia
Extension
.bac
MIME Type
application/octet-stream
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .bac files in Python
def is_bac(file_path: str) -> bool:
"""Check if file is a valid BAC by magic bytes."""
signature = bytes([0x42, 0x41, 0x43, 0x4B, 0x4D, 0x49, 0x4B, 0x45, 0x44, 0x49, 0x53, 0x4B])
with open(file_path, "rb") as f:
return f.read(12) == signatureHow to validate .bac files in Node.js
function isBAC(buffer: Buffer): boolean {
const signature = Buffer.from([0x42, 0x41, 0x43, 0x4B, 0x4D, 0x49, 0x4B, 0x45, 0x44, 0x49, 0x53, 0x4B]);
return buffer.subarray(0, 12).equals(signature);
}How to validate .bac files in Go
func IsBAC(data []byte) bool {
signature := []byte{0x42, 0x41, 0x43, 0x4B, 0x4D, 0x49, 0x4B, 0x45, 0x44, 0x49, 0x53, 0x4B}
if len(data) < 12 {
return false
}
return bytes.Equal(data[:12], signature)
}API Endpoint
/api/v1/bac
curl https://filesignature.org/api/v1/bac
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .bac file?
A .bac file is a BAC file. AmiBackAmigaBackupdata file
What are the magic bytes for .bac files?
The magic bytes for BAC files are 42 41 43 4B 4D 49 4B 45 44 49 53 4B at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .bac file?
To validate a .bac file, read the first bytes of the file and compare them against the known magic bytes (42 41 43 4B 4D 49 4B 45 44 49 53 4B) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .bac files?
There is no officially registered MIME type for .bac files. Systems typically use application/octet-stream as a generic fallback when handling this format.
Is it safe to open .bac files?
BAC (.bac) 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.