app-MAIL-temp/app/pgp_utils.py

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from io import BytesIO
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import gnupg
from app.config import GNUPGHOME
gpg = gnupg.GPG(gnupghome=GNUPGHOME)
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gpg.encoding = "utf-8"
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class PGPException(Exception):
pass
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def load_public_key(public_key: str) -> str:
"""Load a public key into keyring and return the fingerprint. If error, raise Exception"""
import_result = gpg.import_keys(public_key)
try:
return import_result.fingerprints[0]
except Exception as e:
raise PGPException("Cannot load key") from e
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def encrypt_file(data: BytesIO, fingerprint: str) -> str:
r = gpg.encrypt_file(data, fingerprint, always_trust=True)
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if not r.ok:
raise PGPException("Cannot encrypt")
return str(r)