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epicyon
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Code Issues 14 Releases Wiki Activity

Snake case

main
Bob Mottram 2022-01-02 21:48:09 +00:00
parent 019f9b3415
commit b99cc2ecb1
1 changed files with 16 additions and 16 deletions
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32
linked_data_sig.py
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@ -26,23 +26,23 @@ from utils import get_sha_256
def _options_hash(doc: {}) -> str: def _options_hash(doc: {}) -> str:
"""Returns a hash of the signature, with a few fields removed """Returns a hash of the signature, with a few fields removed
""" """
docSig = dict(doc["signature"]) doc_sig = dict(doc["signature"])
# remove fields from signature # remove fields from signature
for k in ["type", "id", "signatureValue"]: for key in ["type", "id", "signatureValue"]:
if k in docSig: if key in doc_sig:
del docSig[k] del doc_sig[key]
docSig["@context"] = "https://w3id.org/identity/v1" doc_sig["@context"] = "https://w3id.org/identity/v1"
options = { options = {
"algorithm": "URDNA2015", "algorithm": "URDNA2015",
"format": "application/nquads" "format": "application/nquads"
} }
normalized = normalize(docSig, options) normalized = normalize(doc_sig, options)
h = hashlib.new("sha256") hsh = hashlib.new("sha256")
h.update(normalized.encode("utf-8")) hsh.update(normalized.encode("utf-8"))
return h.hexdigest() return hsh.hexdigest()
def _doc_hash(doc: {}) -> str: def _doc_hash(doc: {}) -> str:
@ -60,18 +60,18 @@ def _doc_hash(doc: {}) -> str:
} }
normalized = normalize(doc, options) normalized = normalize(doc, options)
h = hashlib.new("sha256") hsh = hashlib.new("sha256")
h.update(normalized.encode("utf-8")) hsh.update(normalized.encode("utf-8"))
return h.hexdigest() return hsh.hexdigest()
def verify_json_signature(doc: {}, publicKeyPem: str) -> bool: def verify_json_signature(doc: {}, public_key_pem: str) -> bool:
"""Returns True if the given ActivityPub post was sent """Returns True if the given ActivityPub post was sent
by an actor having the given public key by an actor having the given public key
""" """
if not has_valid_context(doc): if not has_valid_context(doc):
return False return False
pubkey = load_pem_public_key(publicKeyPem.encode('utf-8'), pubkey = load_pem_public_key(public_key_pem.encode('utf-8'),
backend=default_backend()) backend=default_backend())
to_be_signed = _options_hash(doc) + _doc_hash(doc) to_be_signed = _options_hash(doc) + _doc_hash(doc)
signature = doc["signature"]["signatureValue"] signature = doc["signature"]["signatureValue"]
@ -91,7 +91,7 @@ def verify_json_signature(doc: {}, publicKeyPem: str) -> bool:
return False return False
def generate_json_signature(doc: {}, privateKeyPem: str) -> None: def generate_json_signature(doc: {}, private_key_pem: str) -> None:
"""Adds a json signature to the given ActivityPub post """Adds a json signature to the given ActivityPub post
""" """
if not doc.get('actor'): if not doc.get('actor'):
@ -106,7 +106,7 @@ def generate_json_signature(doc: {}, privateKeyPem: str) -> None:
doc["signature"] = options doc["signature"] = options
to_be_signed = _options_hash(doc) + _doc_hash(doc) to_be_signed = _options_hash(doc) + _doc_hash(doc)
key = load_pem_private_key(privateKeyPem.encode('utf-8'), key = load_pem_private_key(private_key_pem.encode('utf-8'),
None, backend=default_backend()) None, backend=default_backend())
digest = get_sha_256(to_be_signed.encode("utf-8")) digest = get_sha_256(to_be_signed.encode("utf-8"))
signature = key.sign(digest, signature = key.sign(digest,