HPAPP (.hpapp)
.hpapp file signature | application/octet-stream
HP Primegraphing calculator file
Magic Bytes
Offset 0
7C 61 8A B2
Sources: Wikipedia
Extension
.hpapp
MIME Type
application/octet-stream
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .hpapp files in Python
def is_hpapp(file_path: str) -> bool:
"""Check if file is a valid HPAPP by magic bytes."""
signature = bytes([0x7C, 0x61, 0x8A, 0xB2])
with open(file_path, "rb") as f:
return f.read(4) == signatureHow to validate .hpapp files in Node.js
function isHPAPP(buffer: Buffer): boolean {
const signature = Buffer.from([0x7C, 0x61, 0x8A, 0xB2]);
return buffer.subarray(0, 4).equals(signature);
}How to validate .hpapp files in Go
func IsHPAPP(data []byte) bool {
signature := []byte{0x7C, 0x61, 0x8A, 0xB2}
if len(data) < 4 {
return false
}
return bytes.Equal(data[:4], signature)
}API Endpoint
/api/v1/hpapp
curl https://filesignature.org/api/v1/hpapp
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .hpapp file?
A .hpapp file is a HPAPP file. HP Primegraphing calculator file
What are the magic bytes for .hpapp files?
The magic bytes for HPAPP files are 7C 61 8A B2 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .hpapp file?
To validate a .hpapp file, read the first bytes of the file and compare them against the known magic bytes (7C 61 8A B2) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .hpapp files?
There is no officially registered MIME type for .hpapp files. Systems typically use application/octet-stream as a generic fallback when handling this format.
Is it safe to open .hpapp files?
HPAPP (.hpapp) 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.