PowerISO Direct-Access-Archive image
application/octet-stream
Magic Bytes
Offset: 0
44 41 41
Direct-Access-Archive (DAA) is a proprietary disk image format developed and maintained by PowerISO Computing for managing optical media. This format is primarily used to create compressed, password-protected, and multi-volume backups of CD, DVD, and Blu-ray discs. While the container itself is secure, it is a closed-source legacy format requiring specialized software for extraction, and users should verify the integrity of any enclosed files to mitigate potential security risks.
Validation Code
How to validate .daa files in Python
Python
def is_daa(file_path: str) -> bool:
"""Check if file is a valid DAA by magic bytes."""
signature = bytes([0x44, 0x41, 0x41])
with open(file_path, "rb") as f:
return f.read(3) == signatureHow to validate .daa files in Node.js
Node.js
function isDAA(buffer: Buffer): boolean {
const signature = Buffer.from([0x44, 0x41, 0x41]);
return buffer.subarray(0, 3).equals(signature);
}
Go
func IsDAA(data []byte) bool {
signature := []byte{0x44, 0x41, 0x41}
if len(data) < 3 {
return false
}
return bytes.Equal(data[:3], signature)
}API Endpoint
GET
/api/v1/daa
curl https://filesignature.org/api/v1/daa