PGP public keyring file
application/octet-stream
Magic Bytes
Offset: 0
9C CB CB 8D 13 75 D2 11 91 58 00 C0 4F 79 56 A4
The PGP public keyring file is a proprietary data format originally created for Pretty Good Privacy software and currently maintained by Symantec Corporation. It serves as a local repository to store and organize the public keys required for encrypting communications and verifying digital signatures. Although contemporary OpenPGP implementations typically utilize newer formats, this legacy structure remains necessary for backward compatibility with older encryption suites and archived keychains.
Validation Code
How to validate .pkr files in Python
Python
def is_pkr(file_path: str) -> bool:
"""Check if file is a valid PKR by magic bytes."""
signature = bytes([0x9C, 0xCB, 0xCB, 0x8D, 0x13, 0x75, 0xD2, 0x11, 0x91, 0x58, 0x00, 0xC0, 0x4F, 0x79, 0x56, 0xA4])
with open(file_path, "rb") as f:
return f.read(16) == signatureHow to validate .pkr files in Node.js
Node.js
function isPKR(buffer: Buffer): boolean {
const signature = Buffer.from([0x9C, 0xCB, 0xCB, 0x8D, 0x13, 0x75, 0xD2, 0x11, 0x91, 0x58, 0x00, 0xC0, 0x4F, 0x79, 0x56, 0xA4]);
return buffer.subarray(0, 16).equals(signature);
}
Go
func IsPKR(data []byte) bool {
signature := []byte{0x9C, 0xCB, 0xCB, 0x8D, 0x13, 0x75, 0xD2, 0x11, 0x91, 0x58, 0x00, 0xC0, 0x4F, 0x79, 0x56, 0xA4}
if len(data) < 16 {
return false
}
return bytes.Equal(data[:16], signature)
}API Endpoint
GET
/api/v1/pkr
curl https://filesignature.org/api/v1/pkr