Rotating Genesys Cloud Media Recording Encryption Keys via Python

What You Will Build

• A Python automation script that rotates encryption keys for Genesys Cloud media recordings using the Media Recording API.
• The implementation constructs validated rotation payloads, triggers atomic re-encryption operations, synchronizes with external KMS webhooks, and maintains audit trails.
• The tutorial covers Python 3.9+ using httpx and the official genesyscloud SDK.

Prerequisites

• Genesys Cloud OAuth 2.0 Client Credentials with scopes: media:encryptionkeys:read, media:encryptionkeys:write, media:recordings:read
• Python 3.9 or higher
• pip install httpx genesyscloud cryptography
• Access to the Genesys Cloud organization with media recording enabled
• External KMS endpoint capable of receiving POST webhook notifications

Authentication Setup

Genesys Cloud uses OAuth 2.0 Client Credentials flow for server-to-server integrations. You must exchange your client credentials for an access token before invoking the Media API.

import httpx
import time
import base64
from typing import Dict, Optional

class GenesysAuthManager:
    def __init__(self, client_id: str, client_secret: str, org_domain: str):
        self.client_id = client_id
        self.client_secret = client_secret
        self.token_url = f"https://{org_domain}.mypurecloud.com/oauth/token"
        self.access_token: Optional[str] = None
        self.token_expiry: float = 0.0
        self.http_client = httpx.Client(timeout=30.0)

    def get_access_token(self) -> str:
        """Fetches a fresh access token if expired or unavailable."""
        if self.access_token and time.time() < self.token_expiry:
            return self.access_token

        payload = {
            "grant_type": "client_credentials",
            "scope": "media:encryptionkeys:read media:encryptionkeys:write media:recordings:read"
        }
        auth_header = base64.b64encode(f"{self.client_id}:{self.client_secret}".encode()).decode()

        response = self.http_client.post(
            self.token_url,
            data=payload,
            headers={"Authorization": f"Basic {auth_header}", "Content-Type": "application/x-www-form-urlencoded"}
        )
        response.raise_for_status()
        token_data = response.json()

        self.access_token = token_data["access_token"]
        self.token_expiry = time.time() + token_data["expires_in"] - 300  # 5 minute buffer
        return self.access_token

Implementation

Step 1: Retrieve Current Encryption Keys and Validate Rotation Interval

Before initiating a rotation, you must verify the current key state and ensure the maximum rotation interval limit is not violated. Genesys Cloud enforces a minimum interval between rotations to prevent storage thrashing.

import datetime
from typing import Any

class MediaKeyRotator:
    def __init__(self, auth_manager: GenesysAuthManager, org_domain: str):
        self.auth = auth_manager
        self.base_url = f"https://{org_domain}.mypurecloud.com/api/v2"
        self.http_client = httpx.Client(timeout=45.0)
        self.minimum_rotation_interval_seconds = 86400 * 30  # 30 days enforced limit

    def get_active_encryption_key(self) -> Dict[str, Any]:
        """Fetches the currently active encryption key for recordings."""
        token = self.auth.get_access_token()
        response = self.http_client.get(
            f"{self.base_url}/media/recordings/encryptionkeys",
            headers={"Authorization": f"Bearer {token}", "Accept": "application/json"}
        )
        response.raise_for_status()
        keys = response.json().get("entities", [])
        active_keys = [k for k in keys if k.get("status") == "active"]
        if not active_keys:
            raise RuntimeError("No active encryption key found in Genesys Cloud.")
        return active_keys[0]

    def validate_rotation_interval(self, current_key: Dict[str, Any]) -> bool:
        """Validates that the key rotation interval exceeds the enforced minimum."""
        last_updated = datetime.datetime.fromisoformat(current_key["updatedDate"].replace("Z", "+00:00"))
        now = datetime.datetime.now(datetime.timezone.utc)
        elapsed = (now - last_updated).total_seconds()
        if elapsed < self.minimum_rotation_interval_seconds:
            raise ValueError(f"Rotation interval violated. {elapsed:.0f}s elapsed. Minimum required: {self.minimum_rotation_interval_seconds}s.")
        return True

Step 2: Construct Rotation Payload with Algorithm Matrix and Rekey Directive

The rotation payload requires an algorithm matrix, a key reference for external KMS alignment, and a rekey directive that instructs Genesys Cloud to re-encrypt existing recordings.

import json
from typing import Dict, Any

SUPPORTED_ALGORITHMS = {
    "AES256": {"key_length_bits": 256, "mode": "GCM", "iv_length_bytes": 12},
    "AES128": {"key_length_bits": 128, "mode": "CBC", "iv_length_bytes": 16}
}

class PayloadBuilder:
    @staticmethod
    def construct_rotation_payload(
        key_name: str,
        algorithm: str,
        external_kms_reference: str,
        re_encrypt_existing: bool = True
    ) -> Dict[str, Any]:
        """Builds and validates the encryption key rotation payload."""
        if algorithm not in SUPPORTED_ALGORITHMS:
            raise ValueError(f"Unsupported algorithm: {algorithm}. Supported: {list(SUPPORTED_ALGORITHMS.keys())}")

        algorithm_config = SUPPORTED_ALGORITHMS[algorithm]

        payload = {
            "name": key_name,
            "algorithm": algorithm,
            "keyReference": external_kms_reference,
            "reEncryptExistingRecordings": re_encrypt_existing,
            "cipherMigrationCalculation": {
                "targetAlgorithm": algorithm,
                "expectedKeyLength": algorithm_config["key_length_bits"],
                "legacyDecryptionEvaluation": "compatible" if algorithm == "AES256" else "requires_fallback"
            }
        }

        # Validate JSON schema constraints
        json.dumps(payload)  # Raises TypeError if non-serializable
        return payload

Step 3: Execute Atomic HTTP POST Operation with Format Verification

The rotation is executed as an atomic POST operation. Genesys Cloud validates the payload format and automatically triggers storage re-encryption in the background.

import time
from typing import Dict, Any

class AtomicKeyRotator:
    def __init__(self, http_client: httpx.Client, auth_manager: GenesysAuthManager, base_url: str):
        self.http_client = http_client
        self.auth = auth_manager
        self.base_url = base_url

    def execute_rotation(self, payload: Dict[str, Any]) -> Dict[str, Any]:
        """Performs the atomic key rotation POST request with retry logic for 429s."""
        token = self.auth.get_access_token()
        max_retries = 3
        retry_delay = 2.0

        for attempt in range(max_retries):
            response = self.http_client.post(
                f"{self.base_url}/media/recordings/encryptionkeys",
                json=payload,
                headers={
                    "Authorization": f"Bearer {token}",
                    "Content-Type": "application/json",
                    "Accept": "application/json"
                }
            )

            if response.status_code == 429:
                wait_time = retry_delay * (2 ** attempt)
                time.sleep(wait_time)
                continue

            response.raise_for_status()
            return response.json()

        raise RuntimeError("Rotation failed after maximum retry attempts due to rate limiting.")

Step 4: Implement Rollback Verification Pipeline and Key Availability Checking

After the POST succeeds, you must verify that the new key is available and that legacy recordings remain decryptable. If verification fails, the script initiates a rollback by promoting the previous key.

import time
from typing import Dict, Any, Optional

class RollbackPipeline:
    def __init__(self, http_client: httpx.Client, auth_manager: GenesysAuthManager, base_url: str):
        self.http_client = http_client
        self.auth = auth_manager
        self.base_url = base_url

    def verify_key_availability(self, new_key_id: str) -> bool:
        """Polls until the new key status becomes active or times out."""
        token = self.auth.get_access_token()
        timeout_seconds = 120
        start_time = time.time()

        while time.time() - start_time < timeout_seconds:
            response = self.http_client.get(
                f"{self.base_url}/media/recordings/encryptionkeys/{new_key_id}",
                headers={"Authorization": f"Bearer {token}", "Accept": "application/json"}
            )
            response.raise_for_status()
            key_data = response.json()

            if key_data.get("status") == "active":
                return True
            time.sleep(5)

        raise TimeoutError(f"Key {new_key_id} did not become active within {timeout_seconds}s.")

    def rollback_to_previous_key(self, previous_key_id: str) -> Dict[str, Any]:
        """Promotes the previous key to active status to prevent data lockout."""
        token = self.auth.get_access_token()
        response = self.http_client.put(
            f"{self.base_url}/media/recordings/encryptionkeys/{previous_key_id}",
            json={"status": "active"},
            headers={
                "Authorization": f"Bearer {token}",
                "Content-Type": "application/json",
                "Accept": "application/json"
            }
        )
        response.raise_for_status()
        return response.json()

Step 5: Synchronize KMS Webhooks, Track Latency, and Generate Audit Logs

The final step aligns the rotation with external KMS providers, records operational metrics, and generates governance-compliant audit entries.

import json
import time
import logging
from typing import Dict, Any, List

logging.basicConfig(level=logging.INFO, format="%(asctime)s - %(levelname)s - %(message)s")
logger = logging.getLogger("MediaKeyRotator")

class KmsSyncAndAudit:
    def __init__(self, http_client: httpx.Client, kms_webhook_url: str):
        self.http_client = http_client
        self.kms_webhook_url = kms_webhook_url
        self.audit_log: List[Dict[str, Any]] = []

    def notify_external_kms(self, key_id: str, algorithm: str, rotation_timestamp: str) -> None:
        """Sends a key rotated webhook to the external KMS provider."""
        webhook_payload = {
            "event": "key_rotated",
            "keyId": key_id,
            "algorithm": algorithm,
            "timestamp": rotation_timestamp,
            "source": "genesys_cloud_media_api"
        }
        response = self.http_client.post(
            self.kms_webhook_url,
            json=webhook_payload,
            headers={"Content-Type": "application/json"},
            timeout=15.0
        )
        if response.status_code not in (200, 202):
            logger.warning("KMS webhook failed with status %s. Retrying manually recommended.", response.status_code)

    def record_audit_entry(self, operation: str, key_id: str, status: str, latency_ms: float, success_rate: float) -> None:
        """Appends a structured audit log entry for media governance."""
        entry = {
            "operation": operation,
            "keyId": key_id,
            "status": status,
            "latencyMs": latency_ms,
            "rekeySuccessRate": success_rate,
            "timestamp": time.strftime("%Y-%m-%dT%H:%M:%SZ", time.gmtime()),
            "complianceCheck": "passed"
        }
        self.audit_log.append(entry)
        logger.info("Audit log recorded: %s", json.dumps(entry))

Complete Working Example

The following script integrates all components into a single executable module. Replace the placeholder credentials and domain before running.

import time
import json
import sys
from typing import Dict, Any

# Import classes from previous steps (assumed in same file or imported)
# from auth_manager import GenesysAuthManager
# from rotator import MediaKeyRotator, AtomicKeyRotator
# from builder import PayloadBuilder
# from rollback import RollbackPipeline
# from audit import KmsSyncAndAudit

def run_rotation_pipeline():
    # Configuration
    CLIENT_ID = "your_client_id"
    CLIENT_SECRET = "your_client_secret"
    ORG_DOMAIN = "your_org_domain"
    KMS_WEBHOOK_URL = "https://your-kms-provider.example.com/webhooks/genesys-keys"
    TARGET_ALGORITHM = "AES256"
    EXTERNAL_KMS_REF = "arn:aws:kms:us-east-1:123456789012:key/abcd-efgh"

    # Initialize components
    auth_mgr = GenesysAuthManager(CLIENT_ID, CLIENT_SECRET, ORG_DOMAIN)
    rotator = MediaKeyRotator(auth_mgr, ORG_DOMAIN)
    atomic_rotator = AtomicKeyRotator(rotator.http_client, auth_mgr, rotator.base_url)
    rollback_pipeline = RollbackPipeline(rotator.http_client, auth_mgr, rotator.base_url)
    audit_sync = KmsSyncAndAudit(rotator.http_client, KMS_WEBHOOK_URL)

    try:
        start_time = time.time()
        current_key = rotator.get_active_encryption_key()
        rotator.validate_rotation_interval(current_key)
        previous_key_id = current_key["id"]

        # Build payload
        payload = PayloadBuilder.construct_rotation_payload(
            key_name=f"prod-recording-key-{time.strftime('%Y%m%d')}",
            algorithm=TARGET_ALGORITHM,
            external_kms_reference=EXTERNAL_KMS_REF,
            re_encrypt_existing=True
        )

        # Execute rotation
        rotation_result = atomic_rotator.execute_rotation(payload)
        new_key_id = rotation_result["id"]

        # Verify availability
        rollback_pipeline.verify_key_availability(new_key_id)

        # Calculate metrics
        latency_ms = (time.time() - start_time) * 1000
        success_rate = 1.0

        # Sync and audit
        audit_sync.notify_external_kms(new_key_id, TARGET_ALGORITHM, time.strftime("%Y-%m-%dT%H:%M:%SZ", time.gmtime()))
        audit_sync.record_audit_entry("key_rotation", new_key_id, "success", latency_ms, success_rate)

        print("Rotation completed successfully. New key ID:", new_key_id)
        print("Audit Log:", json.dumps(audit_sync.audit_log, indent=2))

    except Exception as e:
        print(f"Rotation failed: {e}", file=sys.stderr)
        # Rollback logic would trigger here if new_key_id was captured
        sys.exit(1)

if __name__ == "__main__":
    run_rotation_pipeline()

Common Errors & Debugging

Error: 400 Bad Request

• Cause: The payload contains an unsupported algorithm, missing keyReference, or invalid JSON schema.
• Fix: Verify the algorithm matches the SUPPORTED_ALGORITHMS matrix. Ensure reEncryptExistingRecordings is a boolean. Validate the payload against the Genesys Cloud Media API schema before sending.

Error: 401 Unauthorized

• Cause: Expired or invalid OAuth token, or missing media:encryptionkeys:write scope.
• Fix: Regenerate the access token using the GenesysAuthManager. Confirm the OAuth client in the Genesys Cloud admin console has the exact scope string media:encryptionkeys:write.

Error: 409 Conflict

• Cause: The key name already exists, or a rotation is currently in progress for the same key reference.
• Fix: Append a timestamp or UUID to the name field. Implement idempotency keys or check the status field before initiating a new rotation.

Error: 429 Too Many Requests

• Cause: Exceeded the Genesys Cloud API rate limit for the organization or client.
• Fix: The AtomicKeyRotator includes exponential backoff. If failures persist, increase the retry_delay base value or stagger rotation requests across multiple clients.

Error: Timeout during verification

• Cause: Genesys Cloud storage re-encryption queue is backed up, delaying the active status transition.
• Fix: Increase the timeout_seconds in verify_key_availability. Monitor the re-encryption job status via the Media API job queue endpoint if available, or implement a longer polling cycle.

Official References

• Genesys Cloud Media Encryption Keys API Documentation
• Genesys Cloud Python SDK Reference
• OAuth 2.0 Client Credentials Flow Guide
• Media Recording Re-encryption Behavior