This repository has been archived on 2024-05-31. You can view files and clone it, but cannot push or open issues or pull requests.
ssikit_trustchain/main.py

121 lines
4.1 KiB
Python
Raw Normal View History

import asyncio
import didkit
import json
from jinja2 import Environment, FileSystemLoader, select_autoescape
2023-11-10 05:45:12 +00:00
import idhub_ssikit
2023-11-22 13:09:08 +00:00
def issue_vc_test(vc_name):
2023-11-22 13:09:08 +00:00
jwk_issuer = didkit.generate_ed25519_key()
jwk_subject = didkit.generate_ed25519_key()
did_issuer = didkit.key_to_did("key", jwk_issuer)
did_subject = didkit.key_to_did("key", jwk_subject)
env = Environment(
loader=FileSystemLoader("vc_templates"),
autoescape=select_autoescape()
)
unsigned_vc_template = env.get_template(f"{vc_name}.json")
data_raw = open(f"vc_templates/{vc_name}--data.py").read()
data = eval(data_raw)
data["issuerDid"] = did_issuer
data["subjectDid"] = did_subject
2023-11-22 13:09:08 +00:00
signed_credential = idhub_ssikit.render_and_sign_credential(
unsigned_vc_template,
jwk_issuer,
data
)
print(signed_credential)
def issue_vc_test_2():
jwk_issuer = didkit.generate_ed25519_key()
jwk_subject = didkit.generate_ed25519_key()
did_issuer = didkit.key_to_did("key", jwk_issuer)
did_subject = didkit.key_to_did("key", jwk_subject)
2023-11-22 13:09:08 +00:00
env = Environment(
loader=FileSystemLoader("vc_templates"),
autoescape=select_autoescape()
)
unsigned_vc_template = env.get_template("membership-card.json")
data = {
"vc_id": "http://example.org/credentials/3731",
"issuer_did": did_issuer,
"subject_did": did_subject,
"issuance_date": "2020-08-19T21:41:50Z",
"validUntil": "2020-08-19T21:41:50Z",
"membershipType": "lareputa"
}
signed_credential = idhub_ssikit.render_and_sign_credential(
unsigned_vc_template,
jwk_issuer,
data
)
2023-11-22 13:09:08 +00:00
print(signed_credential)
verification_result = idhub_ssikit.verify_credential(signed_credential)
print(verification_result)
def replace(s, position, character):
return s[:position] + character + s[position+1:]
signed_credential = replace(signed_credential, 2843, "k")
verification_result = idhub_ssikit.verify_credential(signed_credential)
print(verification_result)
2023-11-22 13:09:08 +00:00
def issue_and_sign_vp_test():
2023-11-27 06:26:02 +00:00
"""
In this example execution two Verifiable Credentials associated with a single Holder are issued and then
combined into a single Verifiable Presentation.
The Verifiable Credentials are of two different models. The use-case is meant to mimic
- Holder being a physical person,
- Issuer A being "Pare Manel" foundation,
- Issuer B being "EXO" foundation,
- Verifier (not pictured) being "Som Connexio", which wants verifiable data of the Holder from both Issuers.
"""
2023-11-22 13:09:08 +00:00
jwk_issuer = didkit.generate_ed25519_key()
jwk_issuer2 = didkit.generate_ed25519_key()
jwk_subject = didkit.generate_ed25519_key()
did_issuer = didkit.key_to_did("key", jwk_issuer)
did_issuer2 = didkit.key_to_did("key", jwk_issuer2)
did_subject = didkit.key_to_did("key", jwk_subject)
print(did_issuer)
print(did_issuer2)
print(did_subject)
env = Environment(
loader=FileSystemLoader("vc_templates"),
autoescape=select_autoescape()
)
unsigned_vc_template = env.get_template("member.json")
data = {
"vc_id": "http://example.org/credentials/3731",
"issuer_did": did_issuer,
"subject_did": did_subject,
"issuance_date": "2020-08-19T21:41:50Z",
"subject_is_member_of": "Pangea"
}
signed_credential = idhub_ssikit.render_and_sign_credential(
unsigned_vc_template,
jwk_issuer,
data
)
data2 = data
data2["issuer_did"] = did_issuer2
signed_credential2 = idhub_ssikit.render_and_sign_credential(
unsigned_vc_template,
jwk_issuer2,
data2
)
signed_presentation = idhub_ssikit.issue_verifiable_presentation([signed_credential, signed_credential2], jwk_subject, did_subject)
print("##############--- SIGNED PRESENTATION ---##############")
2023-11-22 13:09:08 +00:00
print(signed_presentation)
print("##############--- ------------------- ---##############")
res = idhub_ssikit.verify_presentation(signed_presentation)
print(res)