56 lines
1.7 KiB
Python
56 lines
1.7 KiB
Python
"""Phase 23: Verifiable Credentials (VC) Manager.
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Issues and verifies W3C Verifiable Credentials and Presentations.
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"""
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import logging
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import json
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from typing import List, Dict, Any
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from agent.gemini_adapter import GeminiAdapter
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logger = logging.getLogger(__name__)
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class VCManager:
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def __init__(self):
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self.adapter = GeminiAdapter()
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def issue_credential(self, subject_did: str, claims: Dict[str, Any]) -> Dict[str, Any]:
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"""Issues a Verifiable Credential for a given subject and set of claims."""
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logger.info(f"Issuing Verifiable Credential for subject: {subject_did}")
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prompt = f"""
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Subject DID: {subject_did}
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Claims: {json.dumps(claims, indent=2)}
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Please generate a W3C-compliant Verifiable Credential for these claims.
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Include the proof (signature) metadata and the credential schema.
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Identify the 'Privacy-Preserving Safeguards' implemented in this credential.
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Format the output as JSON:
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{{
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"credential": {{
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"@context": [...],
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"type": ["VerifiableCredential", "..."],
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"issuer": "did:key:...",
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"issuanceDate": "...",
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"credentialSubject": {{
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"id": "{subject_did}",
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...
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}},
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"proof": {{...}}
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}},
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"privacy_safeguards": [...],
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"verification_directives": "..."
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}}
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"""
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result = self.adapter.generate(
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model="gemini-3.1-pro-preview",
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prompt=prompt,
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system_instruction="You are Timmy's VC Manager. Your goal is to ensure Timmy can issue and verify credentials with absolute cryptographic certainty.",
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thinking=True,
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response_mime_type="application/json"
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)
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vc_data = json.loads(result["text"])
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return vc_data
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