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SISX (.sisx)

.sisx file signature | application/vnd.symbian.install

Safe

Magic Bytes

Offset 8
10 00 04 19

Sources: Apache Tika

Extension

.sisx

MIME Type

application/vnd.symbian.install

Byte Offset

8

Risk Level

Safe

Validation Code

How to validate .sisx files in Python

Python
def is_sisx(file_path: str) -> bool:
    """Check if file is a valid SISX by magic bytes."""
    signature = bytes([0x10, 0x00, 0x04, 0x19])
    with open(file_path, "rb") as f:
        return f.read(4) == signature

How to validate .sisx files in Node.js

Node.js
function isSISX(buffer: Buffer): boolean {
  const signature = Buffer.from([0x10, 0x00, 0x04, 0x19]);
  return buffer.subarray(0, 4).equals(signature);
}

How to validate .sisx files in Go

Go
func IsSISX(data []byte) bool {
    signature := []byte{0x10, 0x00, 0x04, 0x19}
    if len(data) < 4 {
        return false
    }
    return bytes.Equal(data[:4], signature)
}

API Endpoint

GET /api/v1/sisx
curl https://filesignature.org/api/v1/sisx

See the full API documentation for all endpoints and parameters.

Frequently Asked Questions

What is a .sisx file?

A .sisx file is a SISX file.

What are the magic bytes for .sisx files?

The magic bytes for SISX files are 10 00 04 19 at byte offset 8. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .sisx file?

To validate a .sisx file, read the first bytes of the file and compare them against the known magic bytes (10 00 04 19) at offset 8. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .sisx files?

The primary MIME type for .sisx files is application/vnd.symbian.install.

Is it safe to open .sisx files?

SISX (.sisx) 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.