Synology router configuration backup file
application/octet-stream
Magic Bytes
Offset: 0
02 64 73 73
Synology router configuration backup (DSS) is a proprietary binary file format developed by Synology Inc. for their Synology Router Manager (SRM) operating system. It serves as a comprehensive archive of system parameters, firewall rules, and user settings, facilitating device restoration or hardware migration. Although the format is non-executable, these files frequently contain sensitive network credentials and should be managed with strict access controls to prevent unauthorized administrative access or potential network reconfiguration.
Validation Code
How to validate .dss files in Python
Python
def is_dss(file_path: str) -> bool:
"""Check if file is a valid DSS by magic bytes."""
signature = bytes([0x02, 0x64, 0x73, 0x73])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .dss files in Node.js
Node.js
function isDSS(buffer: Buffer): boolean {
const signature = Buffer.from([0x02, 0x64, 0x73, 0x73]);
return buffer.subarray(0, 4).equals(signature);
}
Go
func IsDSS(data []byte) bool {
signature := []byte{0x02, 0x64, 0x73, 0x73}
if len(data) < 4 {
return false
}
return bytes.Equal(data[:4], signature)
}API Endpoint
GET
/api/v1/dss
curl https://filesignature.org/api/v1/dss