feat: integrate standardized nostr libraries

- Integrated nostr-crypto-utils for core cryptographic operations
- Integrated nostr-nsec-seedphrase-library for key management
- Updated documentation with new dependencies and usage
- Improved security through standardized implementations

Author: vveerrgg

docs/key-management.md

@@ -57,6 +57,35 @@ The key management system is designed according to our core architectural princi
 - **Format**: `nostr_[environment]_[service]_[timestamp]`
 - **Validation**: SHA-256 hash stored in configuration
 
+## Cryptographic Operations
+
+### Standardized Crypto Utilities
+
+The middleware now uses standardized cryptographic operations from our official packages:
+
+- `@humanjavaenterprises/nostr-crypto-utils`: Core cryptographic operations
+- `@humanjavaenterprises/nostr-nsec-seedphrase-library`: Seedphrase-based key management
+
+These packages ensure:
+- Consistent cryptographic implementations across all Nostr projects
+- Standardized key generation and management
+- Improved security through well-tested, audited code
+- Better maintainability and updates
+
+### Development Mode
+
+In development mode, the middleware uses seedphrase-based key generation for predictable testing environments:
+
+```typescript
+import { generateKeyPair } from '@humanjavaenterprises/nostr-crypto-utils';
+import { generateFromSeed } from '@humanjavaenterprises/nostr-nsec-seedphrase-library';
+
+// Development mode uses deterministic key generation
+const keyPair = process.env.NODE_ENV === 'development' 
+  ? generateFromSeed('development-seed-phrase')
+  : generateKeyPair();
+```
+
 ## Environment-Specific Key Management
 
 ### Development Environment

docs/migration-guide.md

@@ -22,9 +22,19 @@ Before starting the migration:
 
 2. Install the package:
    ```bash
-   npm install @maiqr/nostr-auth-enroll
+   npm install @maiqr/nostr-auth-enroll @humanjavaenterprises/nostr-crypto-utils @humanjavaenterprises/nostr-nsec-seedphrase-library
    ```
 
+## Dependencies
+
+### Core Dependencies
+
+The middleware now uses standardized cryptographic operations:
+- `nostr-crypto-utils`: Provides core cryptographic operations
+- `nostr-nsec-seedphrase-library`: Handles seedphrase-based key management
+
+These packages ensure consistent cryptographic implementations across all your Nostr applications.
+
 ## Backend Migration
 
 ### 1. Initial Setup