UCAS (.ucas)
.ucas file signature | application/octet-stream
Unreal EngineCompressed Asset Storage file
Magic Bytes
Offset 0
8C 0A 00
Sources: Wikipedia
Extension
.ucas
MIME Type
application/octet-stream
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .ucas files in Python
def is_ucas(file_path: str) -> bool:
"""Check if file is a valid UCAS by magic bytes."""
signature = bytes([0x8C, 0x0A, 0x00])
with open(file_path, "rb") as f:
return f.read(3) == signatureHow to validate .ucas files in Node.js
function isUCAS(buffer: Buffer): boolean {
const signature = Buffer.from([0x8C, 0x0A, 0x00]);
return buffer.subarray(0, 3).equals(signature);
}How to validate .ucas files in Go
func IsUCAS(data []byte) bool {
signature := []byte{0x8C, 0x0A, 0x00}
if len(data) < 3 {
return false
}
return bytes.Equal(data[:3], signature)
}API Endpoint
/api/v1/ucas
curl https://filesignature.org/api/v1/ucas
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .ucas file?
A .ucas file is a UCAS file. Unreal EngineCompressed Asset Storage file
What are the magic bytes for .ucas files?
The magic bytes for UCAS files are 8C 0A 00 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .ucas file?
To validate a .ucas file, read the first bytes of the file and compare them against the known magic bytes (8C 0A 00) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .ucas files?
There is no officially registered MIME type for .ucas files. Systems typically use application/octet-stream as a generic fallback when handling this format.
Is it safe to open .ucas files?
UCAS (.ucas) 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.