pymdoccbor 1.0.0

Python parser and writer for Mobile Driving License and EUDI Wallet MDOC CBOR.

pyMDOC-CBOR

Python parser and writer for EUDI Wallet MDOC CBOR for credential Type 1 and also or mDL use cases.

This project is an experimental proposal born for educational purposes. Please do not consider it as usable before the release 0.6.0.

Specifications and Resources

• ISO 18013-5 - ISO-compliant driving licence — Mobile driving licence (mDL) application
• RFC 8949 - Concise Binary Object Representation (CBOR)
• RFC 9052 - CBOR Object Signing and Encryption (COSE): Structures and Process
  • deprecates RFC 8152 - CBOR Object Signing and Encryption (COSE)
• IANA Registry - Concise Binary Object Representation (CBOR) Tags

COSE label 33 (x5chain) in MSO:

• RFC 9360 CBOR Object Signing and Encryption (COSE) - Header Parameters for Carrying and Referencing X.509 Certificates

Scope

pyMDOC-CBOR is a cbor2 and pycose wrapper that parses, creates and validates MDOC CBOR encoded binaries according to ISO 18013-5.

Setup

pip install pymdoccbor

or

pip install git+https://github.com/peppelinux/pyMDOC-CBOR.git

Usage

Issue an MDOC CBOR signed with HSM key

PID_DATA = {
        "eu.europa.ec.eudiw.pid.1": {
            "family_name": "Raffaello",
            "given_name": "Mascetti",
            "birth_date": "1922-03-13"
        }
    }

mdoci = MdocCborIssuer(
    alg = 'ES256',
    kid = "demo-kid",
    hsm=True,
    key_label="p256-1",
    user_pin="1234",
    lib_path="/etc/utimaco/libcs2_pkcs11.so",
    slot_id=3
)

mdoc = mdoci.new(
    doctype="eu.europa.ec.eudiw.pid.1",
    data=PID_DATA,
    # cert_path="app/keys/IACAmDLRoot01.der" # DS certificate 
)

Issue an MDOC CBOR

MdocCborIssuer must be initialized with a private key. The method .new() gets the user attributes, devicekeyinfo and doctype.

import os

from pymdoccbor.mdoc.issuer import MdocCborIssuer

PKEY = {
    'KTY': 'EC2',
    'CURVE': 'P_256',
    'ALG': 'ES256',
    'D': os.urandom(32),
    'KID': b"demo-kid"
}

PID_DATA = {
        "eu.europa.ec.eudiw.pid.1": {
            "family_name": "Raffaello",
            "given_name": "Mascetti",
            "birth_date": "1922-03-13",
	        "birth_place": "Rome",
            "birth_country": "IT"
        }
    }

mdoci = MdocCborIssuer(
    private_key=PKEY,
    alg = "ES256"
)

mdoc = mdoci.new(
    doctype="eu.europa.ec.eudiw.pid.1",
    data=PID_DATA,
    devicekeyinfo=PKEY,
    validity = {"issuance_date": "2025-01-17", "expiry_date": "2025-11-13" },
    # cert_path="/path/"
)

mdoc
>> returns a python dictionay

mdoc.dump()
>> returns mdoc MSO bytes

mdoci.dump()
>> returns mdoc bytes

mdoci.dumps()
>> returns AF Binary mdoc string representation

Issue an MSO alone

MsoIssuer is a class that handles private keys, data processing, digests and signature operations.

The disclosure_map is used in the Mdoc nameSpaces object for issuance and presentations, it's carried in the mdoc but outside of the MSO, even if it is produced by MsoIssuer. that's why MsoIssuer.sign() returns a pure MSO, while disclosure_map is an attribute of the MsoIssuer instance.

import os
from pymdoccbor.mso.issuer import MsoIssuer

msoi = MsoIssuer(
    data = {
        "eu.europa.ec.eudiw.pid.1": {
            "family_name": "Raffaello",
            "given_name": "Mascetti",
            "birth_date": "1922-03-13"
        }
    },
    private_key = {
        'KTY': 'EC2',
        'CURVE': 'P_256',
        'ALG': 'ES256',
        'D': os.urandom(32),
        'KID': b"demo-kid"
    }
)

mso = msoi.sign()

API usage:

• msoi.data, user attributes to be encoded
• msoi.private_key, COSEKey
• msoi.public_key, COSEKey without d (for EC2Key)
• msoi.selfsigned_x509cert, using the private and the public keys returns a self-signed x509 certificate
• msoi.hash_map, digests that will be signed in the MSO
• msoi.disclosure_map, disclosure objects grouped by namespaces
• msoi.sign, signs the MSO and returns it

[Presentation] Parse a binary MDocCBOR

from pymdoccbor.mdoc.verifier import MdocCbor
ISSUED_MDOC="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"
mdoc = MdocCbor()
mdoc.loads(ISSUED_MDOC)
mdoc.verify()
>> True

mdoc
>> pymdoccbor.mdoc.verifier.MdocCbor [1 valid documents]

mdoc.documents
>> [pymdoccbor.mdoc.verifier.MobileDocument [valid]]

mdoc.disclosure_map
>> ... dictionary containing all the disclosed attributes ...

Verify the Mobile Security Object

from pymdoccbor.mso.verifier import MsoVerifier

import binascii
import cbor2

ISSUED_MDOC="a36776657273696f6e63312e3069646f63756d656e747381a367646f6354797065756f72672e69736f2e31383031332e352e312e6d444c6c6973737565725369676e6564a26a6e616d65537061636573a1716f72672e69736f2e31383031332e352e3186d8185863a4686469676573744944006672616e646f6d58208798645b20ea200e19ffabac92624bee6aec63aceedecfb1b80077d22bfc20e971656c656d656e744964656e7469666965726b66616d696c795f6e616d656c656c656d656e7456616c756563446f65d818586ca4686469676573744944036672616e646f6d5820b23f627e8999c706df0c0a4ed98ad74af988af619b4bb078b89058553f44615d71656c656d656e744964656e7469666965726a69737375655f646174656c656c656d656e7456616c7565d903ec6a323031392d31302d3230d818586da4686469676573744944046672616e646f6d5820c7ffa307e5de921e67ba5878094787e8807ac8e7b5b3932d2ce80f00f3e9abaf71656c656d656e744964656e7469666965726b6578706972795f646174656c656c656d656e7456616c7565d903ec6a323032342d31302d3230d818586da4686469676573744944076672616e646f6d582026052a42e5880557a806c1459af3fb7eb505d3781566329d0b604b845b5f9e6871656c656d656e744964656e7469666965726f646f63756d656e745f6e756d6265726c656c656d656e7456616c756569313233343536373839d818590471a4686469676573744944086672616e646f6d5820d094dad764a2eb9deb5210e9d899643efbd1d069cc311d3295516ca0b024412d71656c656d656e744964656e74696669657268706f7274726169746c656c656d656e7456616c7565590412ffd8ffe000104a46494600010101009000900000ffdb004300130d0e110e0c13110f11151413171d301f1d1a1a1d3a2a2c2330453d4947443d43414c566d5d4c51685241435f82606871757b7c7b4a5c869085778f6d787b76ffdb0043011415151d191d381f1f38764f434f7676767676767676767676767676767676767676767676767676767676767676767676767676767676767676767676767676ffc00011080018006403012200021101031101ffc4001b00000301000301000000000000000000000005060401020307ffc400321000010303030205020309000000000000010203040005110612211331141551617122410781a1163542527391b2c1f1ffc4001501010100000000000000000000000000000001ffc4001a110101010003010000000000000000000000014111213161ffda000c03010002110311003f00a5bbde22da2329c7d692bc7d0d03f52cfb0ff75e7a7ef3e7709723a1d0dae146ddfbb3c039ce07ad2bd47a7e32dbb8dd1d52d6ef4b284f64a480067dfb51f87ffb95ff00eb9ff14d215de66af089ce44b7dbde9cb6890a2838eddf18078f7add62d411ef4db9b10a65d6b95a147381ea0d495b933275fe6bba75c114104a8ba410413e983dff004f5af5d34b4b4cde632d0bf1fd1592bdd91c6411f3934c2fa6af6b54975d106dcf4a65ae56e856001ebc03c7ce29dd9eef1ef10fc447dc9da76ad2aee93537a1ba7e4f70dd8eff0057c6dffb5e1a19854a83758e54528750946ec6704850cd037bceb08b6d7d2cc76d3317fc7b5cc04fb6707269c5c6e0c5b60ae549242123b0e493f602a075559e359970d98db89525456b51c951c8afa13ea8e98e3c596836783d5c63f5a61a99fdb7290875db4be88ab384bbbbbfc7183fdeaa633e8951db7da396dc48524fb1a8bd611a5aa2a2432f30ab420a7a6d3240c718cf031fa9ef4c9ad550205aa02951df4a1d6c8421b015b769db8c9229837ea2be8b1b0d39d0eba9c51484efdb8c0efd8d258daf3c449699f2edbd4584e7af9c64e3f96b9beb28d4ac40931e6478c8e76a24a825449501d867d2b1dcdebae99b9c752ae4ecd6dde4a179c1c1e460938f9149ef655e515c03919a289cb3dca278fb7bf177f4faa829dd8ce3f2ac9a7ecde490971fafd7dce15eed9b71c018c64fa514514b24e8e4f8c5c9b75c1e82579dc1233dfec08238f6add62d391acc1c5256a79e706d52d431c7a0145140b9fd149eb3a60dc5e88cbbc2da092411e9dc71f39a7766b447b344e847dcac9dcb5abba8d145061d43a6fcf1e65cf15d0e90231d3dd9cfe62995c6dcc5ca12a2c904a15f71dd27d451453e09d1a21450961cbb3ea8a956433b781f1ce33dfed54f0e2b50a2b71d84ed6db18028a28175f74fc6bda105c529a791c25c4f3c7a11f71586268f4a66b726e33de9ea6f1b52b181c760724e47b514520a5a28a283ffd9d81858ffa4686469676573744944096672616e646f6d58204599f81beaa2b20bd0ffcc9aa03a6f985befab3f6beaffa41e6354cdb2ab2ce471656c656d656e744964656e7469666965727264726976696e675f70726976696c656765736c656c656d656e7456616c756582a37576656869636c655f63617465676f72795f636f646561416a69737375655f64617465d903ec6a323031382d30382d30396b6578706972795f64617465d903ec6a323032342d31302d3230a37576656869636c655f63617465676f72795f636f646561426a69737375655f64617465d903ec6a323031372d30322d32336b6578706972795f64617465d903ec6a323032342d31302d32306a697373756572417574688443a10126a118215901d2308201ce30820174a003020102021401ec51916031e6898e8fc7864af5e6d5f86602b6300a06082a8648ce3d04030230233114301206035504030c0b75746f7069612069616361310b3009060355040613025553301e170d3230313030313030303030305a170d3231313030313030303030305a30213112301006035504030c0975746f706961206473310b30090603550406130255533059301306072a8648ce3d020106082a8648ce3d03010703420004ace7ab7340e5d9648c5a72a9a6f56745c7aad436a03a43efea77b5fa7b88f0197d57d8983e1b37d3a539f4d588365e38cbbf5b94d68c547b5bc8731dcd2f146ba38187308184301e0603551d120417301581136578616d706c65406578616d706c652e636f6d301c0603551d1f041530133011a00fa00d820b6578616d706c652e636f6d301d0603551d0e0416041414e29017a6c35621ffc7a686b7b72db06cd12351300e0603551d0f0101ff04040302078030150603551d250101ff040b3009060728818c5d050102300a06082a8648ce3d0403020348003045022100bac6f93a8bacf0fc9aeac1c89a5c9293af2076942e9e972882a113640330702702207b7b73c0444371a4c94c9c888ddfe553ffde84ca492fd64dfbf02ad46a31cbc85903a2d81859039da66776657273696f6e63312e306f646967657374416c676f726974686d675348412d3235366c76616c756544696765737473a2716f72672e69736f2e31383031332e352e31ad00582075167333b47b6c2bfb86eccc1f438cf57af055371ac55e1e359e20f254adcebf01582067e539d6139ebd131aef441b445645dd831b2b375b390ca5ef6279b205ed45710258203394372ddb78053f36d5d869780e61eda313d44a392092ad8e0527a2fbfe55ae0358202e35ad3c4e514bb67b1a9db51ce74e4cb9b7146e41ac52dac9ce86b8613db555045820ea5c3304bb7c4a8dcb51c4c13b65264f845541341342093cca786e058fac2d59055820fae487f68b7a0e87a749774e56e9e1dc3a8ec7b77e490d21f0e1d3475661aa1d0658207d83e507ae77db815de4d803b88555d0511d894c897439f5774056416a1c7533075820f0549a145f1cf75cbeeffa881d4857dd438d627cf32174b1731c4c38e12ca936085820b68c8afcb2aaf7c581411d2877def155be2eb121a42bc9ba5b7312377e068f660958200b3587d1dd0c2a07a35bfb120d99a0abfb5df56865bb7fa15cc8b56a66df6e0c0a5820c98a170cf36e11abb724e98a75a5343dfa2b6ed3df2ecfbb8ef2ee55dd41c8810b5820b57dd036782f7b14c6a30faaaae6ccd5054ce88bdfa51a016ba75eda1edea9480c5820651f8736b18480fe252a03224ea087b5d10ca5485146c67c74ac4ec3112d4c3a746f72672e69736f2e31383031332e352e312e5553a4005820d80b83d25173c484c5640610ff1a31c949c1d934bf4cf7f18d5223b15dd4f21c0158204d80e1e2e4fb246d97895427ce7000bb59bb24c8cd003ecf94bf35bbd2917e340258208b331f3b685bca372e85351a25c9484ab7afcdf0d2233105511f778d98c2f544035820c343af1bd1690715439161aba73702c474abf992b20c9fb55c36a336ebe01a876d6465766963654b6579496e666fa1696465766963654b6579a40102200121582096313d6c63e24e3372742bfdb1a33ba2c897dcd68ab8c753e4fbd48dca6b7f9a2258201fb3269edd418857de1b39a4e4a44b92fa484caa722c228288f01d0c03a2c3d667646f6354797065756f72672e69736f2e31383031332e352e312e6d444c6c76616c6964697479496e666fa3667369676e6564c074323032302d31302d30315431333a33303a30325a6976616c696446726f6dc074323032302d31302d30315431333a33303a30325a6a76616c6964556e74696cc074323032312d31302d30315431333a33303a30325a5840cff12c17d4739aba806035a9cb2b34ae8a830cef4f329289f9a3ebd302dd6b99c584068257569397b92ba9aa5128554eb05d1273dafea313da4aff6b01a5fb3f6c6465766963655369676e6564a26a6e616d65537061636573d81841a06a64657669636541757468a1696465766963654d61638443a10105a0f65820200d73ded787c64652dc8ee743ea83a5260d5a3283fddc919b7b9cfb486addb26673746174757300"
BIN_ISSUED_MDOC = binascii.unhexlify(ISSUED_MDOC)

mdoc = cbor2.loads(BIN_ISSUED_MDOC)
msop = MsoVerifier(mdoc['documents'][0]['issuerSigned']['issuerAuth'])
msop.verify_signature()

API usage:

• msop.payload_as_dict: returns the MSO as Python dictionary.
• msop.payload_as_raw: returns the MSO as bytes in its original format.
• msop.payload_as_cbor: returns the MSO as CBOR encoded object.
• msop.object: returns a pycose COSE_Sign1 object.
• msop.raw_public_keys: returns the list of the public keys from the unprotected COSE header
• msop.public_key: returns cryptography.hazmat key.
• msop.x509_certificates: returns a list of cryptography.x509 certificate objects

Tests

coverage erase
pytest --cov-report term-missing --cov-report term:skip-covered --cov

Other examples

Quick preview in bash using AF binary

# D.4.1.2 mdoc response
export ISSUED_MDOC="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"

echo $ISSUED_MDOC | xxd -r -ps | python3 -m cbor2.tool --pretty

using cbor-diag

Install cbor-diag

pip install cbor-diag

Print a cbor diagnostic representation

from cbor_diag import *

encoded = bytes.fromhex(ISSUED_MDOC)
print(cbor2diag(encoded))

Other examples at cbor official documentation.

References

CBOR Diagnostic representation

• CBOR-DIAG-PY
• Authlete's CBOR diagnostic tools
• Auth0 CBOR diagnostic tool

X.509 certificates and chains

• Python Certvalidator

Authors and contributors

• Giuseppe De Marco
• Pasquale De Rose