Initial template structure from nostr_core_lib

- Complete C library template with OpenSSL-based crypto
- Comprehensive build system (Makefile, build.sh)
- Example code and test suite
- Documentation and usage guides
- Cross-platform compatibility (x64/ARM64)
- Production-ready structure for C library projects

README.md

@@ -1,6 +1,6 @@
 # NOSTR Core Library
 
-A comprehensive, self-contained C library for NOSTR protocol implementation with no external cryptographic dependencies.
+A comprehensive, production-ready C library for NOSTR protocol implementation with OpenSSL-based cryptography and extensive protocol support.
 
 [![Version](https://img.shields.io/badge/version-0.1.20-blue.svg)](VERSION)
 [![License](https://img.shields.io/badge/license-MIT-green.svg)](#license)
@@ -11,12 +11,14 @@ A comprehensive, self-contained C library for NOSTR protocol implementation with
 ### Core Protocol Support
 - **NIP-01**: Basic protocol flow - event creation, signing, and validation
 - **NIP-04**: Encrypted direct messages (ECDH + AES-CBC + Base64)
+- **NIP-05**: DNS-based internet identifier verification
 - **NIP-06**: Key derivation from mnemonic (BIP39/BIP32 compliant)  
+- **NIP-11**: Relay information documents
 - **NIP-13**: Proof of Work for events
 - **NIP-44**: Versioned encrypted direct messages (ECDH + ChaCha20 + HMAC)
 
 ### Cryptographic Features
-- **Self-Contained**: No external crypto dependencies (OpenSSL, libwally, etc.)
+- **OpenSSL-Based**: Production-grade cryptography with OpenSSL backend
 - **Secp256k1**: Complete elliptic curve implementation bundled
 - **BIP39**: Mnemonic phrase generation and validation
 - **BIP32**: Hierarchical deterministic key derivation
@@ -27,12 +29,14 @@ A comprehensive, self-contained C library for NOSTR protocol implementation with
 ### Networking & Relay Support
 - **Multi-Relay Queries**: Synchronous querying with progress callbacks
 - **Relay Pools**: Asynchronous connection management with statistics
-- **WebSocket Communication**: Full relay protocol support
+- **OpenSSL WebSocket Communication**: Full relay protocol support with TLS
+- **NIP-05 Identifier Verification**: DNS-based identity resolution
+- **NIP-11 Relay Information**: Automatic relay capability discovery
 - **Event Deduplication**: Automatic handling of duplicate events across relays
 - **Connection Management**: Automatic reconnection and error handling
 
 ### Developer Experience
-- **Zero Dependencies**: Only requires standard C library and math library (`-lm`)
+- **Minimal Dependencies**: Only requires OpenSSL, standard C library and math library
 - **Thread-Safe**: Core cryptographic functions are stateless
 - **Cross-Platform**: Builds on Linux, macOS, Windows
 - **Comprehensive Examples**: Ready-to-run demonstration programs
@@ -139,10 +143,14 @@ make clean
 - Standard C library
 - Math library (`-lm`)
 
-**Included:**
+**Included & Embedded (x64):**
 - cJSON (JSON parsing)
 - secp256k1 (elliptic curve cryptography)
-- OpenSSL (TLS for WebSocket connections)
+- OpenSSL (complete cryptographic backend + TLS)
+- curl (HTTP/HTTPS for NIP-05/NIP-11)
+
+**ARM64 Additional Requirements:**
+- System OpenSSL libraries (`-lssl -lcrypto`)
 
 ## 📚 API Documentation
 
@@ -240,6 +248,30 @@ int nostr_relay_pool_run(nostr_relay_pool_t* pool, int timeout_ms);
 int nostr_relay_pool_poll(nostr_relay_pool_t* pool, int timeout_ms);
 ```
 
+### NIP-05 Identifier Verification
+```c
+// Lookup public key from NIP-05 identifier
+int nostr_nip05_lookup(const char* nip05_identifier, char* pubkey_hex_out,
+                       char*** relays, int* relay_count, int timeout_seconds);
+
+// Verify NIP-05 identifier against public key
+int nostr_nip05_verify(const char* nip05_identifier, const char* pubkey_hex, 
+                       char*** relays, int* relay_count, int timeout_seconds);
+
+// Parse .well-known/nostr.json response
+int nostr_nip05_parse_well_known(const char* json_response, const char* local_part,
+                                 char* pubkey_hex_out, char*** relays, int* relay_count);
+```
+
+### NIP-11 Relay Information
+```c
+// Fetch relay information document
+int nostr_nip11_fetch_relay_info(const char* relay_url, nostr_relay_info_t** info_out, int timeout_seconds);
+
+// Free relay information structure
+void nostr_nip11_relay_info_free(nostr_relay_info_t* info);
+```
+
 ## 📁 Examples
 
 The library includes comprehensive examples:
@@ -274,9 +306,12 @@ cd tests && make test
 - **Core Functionality**: `simple_init_test`, `header_test`
 - **Cryptography**: `chacha20_test`, `nostr_crypto_test`
 - **NIP-04 Encryption**: `nip04_test`
+- **NIP-05 Identifiers**: `nip05_test`
+- **NIP-11 Relay Info**: `nip11_test`
 - **NIP-44 Encryption**: `nip44_test`, `nip44_debug_test`
 - **Key Derivation**: `nostr_test_bip32`
 - **Relay Communication**: `relay_pool_test`, `sync_test`
+- **HTTP/WebSocket**: `http_test`, `wss_test`
 - **Proof of Work**: `test_pow_loop`
 
 ## 🏗️ Integration
@@ -388,9 +423,17 @@ Current version: **0.1.20**
 
 The library uses automatic semantic versioning based on Git tags. Each build increments the patch version automatically.
 
+**Recent Developments:**
+- **OpenSSL Migration**: Transitioned from mbedTLS to OpenSSL for improved compatibility
+- **NIP-05 Support**: DNS-based internet identifier verification
+- **NIP-11 Support**: Relay information document fetching and parsing
+- **Enhanced WebSocket**: OpenSSL-based TLS WebSocket communication
+- **Production Ready**: Comprehensive test suite and error handling
+
+**Version Timeline:**
 - `v0.1.x` - Initial development releases
-- Focus on core protocol implementation and self-contained crypto
-- Full NIP-01, NIP-04, NIP-06, NIP-13, NIP-44 support
+- Focus on core protocol implementation and OpenSSL-based crypto
+- Full NIP-01, NIP-04, NIP-05, NIP-06, NIP-11, NIP-13, NIP-44 support
 
 ## 🐛 Troubleshooting
 
@@ -428,13 +471,14 @@ This project is licensed under the MIT License - see the [LICENSE](LICENSE) file
 ## 🙏 Acknowledgments
 
 - **NOSTR Protocol** - The decentralized social media protocol
+- **OpenSSL** - Production-grade cryptographic library and TLS implementation
 - **secp256k1** - Bitcoin's elliptic curve library
 - **cJSON** - Lightweight JSON parser
-- **mbedTLS** - Cryptographic building blocks
+- **curl** - HTTP/HTTPS client library for NIP-05/NIP-11
 - **NOSTR Community** - For protocol specification and feedback
 
 ---
 
 **Built with ❤️ for the decentralized web**
 
-*Self-contained • Zero dependencies • Production ready*
+*OpenSSL-based • Minimal dependencies • Production ready*