Security News
Supply Chain Attack Detected in Solana's web3.js Library
A supply chain attack has been detected in versions 1.95.6 and 1.95.7 of the popular @solana/web3.js library.
This project is a Python implementation of the IETF CBOR Encoded Message Syntax (COSE). COSE has reached RFC status and is now available at RFC 8152.
$ pip install pycose
CBOR Encoded Message Syntax (COSE) is a data format for concise representation of small messages RFC 8152. COSE is optimized for low power devices. The messages can be encrypted, MAC'ed and signed. There are 6 different types of COSE messages:
A basic COSE message consists of 2 information buckets and the payload:
Additionally, based on the message type, other message fields can be added:
from binascii import unhexlify
from pycose.messages import Enc0Message
from pycose.keys import SymmetricKey
# Create a COSE Encrypt0 Message
msg = Enc0Message(
phdr={'ALG': 'A128GCM', 'IV': unhexlify(b'01010101010101010101010101010101')},
uhdr={'KID': b'meriadoc.brandybuck@buckland.example'},
payload='a secret message'.encode('utf-8')
)
# Create a COSE Symmetric Key
cose_key = SymmetricKey(key=unhexlify(b'000102030405060708090a0b0c0d0e0f'))
msg.key = cose_key
# Performs encryption and CBOR serialization
msg.encode()
b'\xd0\x83U\xa2\x01\x01\x05P\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\xa1\x04X$meriadoc.brandybuck@buckland.exampleX \xc4\xaf\x85\xacJQ4\x93\x19\x93\xec\n\x18c\xa6\xe8\xc6n\xf4\xc9\xac\x161^\xe6\xfe\xcd\x9b.\x1cy\xa1'
from binascii import unhexlify
from pycose.messages import Enc0Message
from pycose.keys import SymmetricKey
# message bytes (CBOR encoded)
msg = b'\xd0\x83U\xa2\x01\x01\x05P\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\x01\xa1\x04X$meriadoc.brandybuck@buckland.exampleX \xc4\xaf\x85\xacJQ4\x93\x19\x93\xec\n\x18c\xa6\xe8\xc6n\xf4\xc9\xac\x161^\xe6\xfe\xcd\x9b.\x1cy\xa1'
cose_msg = Enc0Message.decode(msg)
# Create a COSE Symmetric Key
cose_key = SymmetricKey(key=unhexlify(b'000102030405060708090a0b0c0d0e0f'))
cose_msg.key = cose_key
cose_msg.decrypt()
b'a secret message'
More examples can be found here
To run the test suite you need pytest
:
$ pip install pytest
Move to the root of the repository and type:
$ pytest
The project depends on pyca/cryptography for all cryptographic operations, except the deterministic ECDSA algorithm. For deterministic ECDSA cose
uses python-ecdsa.
More documentation on COSE and the cose
API can be found at: https://pycose.readthedocs.io
FAQs
CBOR Object Signing and Encryption (COSE) implementation
We found that pycose demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Security News
A supply chain attack has been detected in versions 1.95.6 and 1.95.7 of the popular @solana/web3.js library.
Research
Security News
A malicious npm package targets Solana developers, rerouting funds in 2% of transactions to a hardcoded address.
Security News
Research
Socket researchers have discovered malicious npm packages targeting crypto developers, stealing credentials and wallet data using spyware delivered through typosquats of popular cryptographic libraries.