remove exposed .h crypto headers

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# NOSTR Core Library
A comprehensive, production-ready C library for NOSTR protocol implementation with OpenSSL-based cryptography and extensive protocol support.
A C library for NOSTR protocol implementation. Work in progress.
[![Version](https://img.shields.io/badge/version-0.1.20-blue.svg)](VERSION)
[![Version](https://img.shields.io/badge/version-0.2.1-blue.svg)](VERSION)
[![License](https://img.shields.io/badge/license-MIT-green.svg)](#license)
[![Build Status](https://img.shields.io/badge/build-passing-brightgreen.svg)](#building)
## 🚀 Features
### 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)
## 📋 NIP Implementation Status
### Cryptographic Features
- **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
- **ChaCha20**: Stream cipher for NIP-44 encryption
- **AES-CBC**: Block cipher for NIP-04 encryption
- **Schnorr Signatures**: BIP-340 compliant signing and verification
### Core Protocol NIPs
- [x] [NIP-01](nips/01.md) - Basic protocol flow - event creation, signing, and validation
- [ ] [NIP-02](nips/02.md) - Contact List and Petnames
- [ ] [NIP-03](nips/03.md) - OpenTimestamps Attestations for Events
- [x] [NIP-04](nips/04.md) - Encrypted Direct Messages (legacy)
- [x] [NIP-05](nips/05.md) - Mapping Nostr keys to DNS-based internet identifiers
- [x] [NIP-06](nips/06.md) - Basic key derivation from mnemonic seed phrase
- [ ] [NIP-07](nips/07.md) - `window.nostr` capability for web browsers
- [ ] [NIP-08](nips/08.md) - Handling Mentions
- [ ] [NIP-09](nips/09.md) - Event Deletion
- [ ] [NIP-10](nips/10.md) - Conventions for clients' use of `e` and `p` tags in text events
- [x] [NIP-11](nips/11.md) - Relay Information Document
- [ ] [NIP-12](nips/12.md) - Generic Tag Queries
- [x] [NIP-13](nips/13.md) - Proof of Work
- [ ] [NIP-14](nips/14.md) - Subject tag in text events
- [ ] [NIP-15](nips/15.md) - Nostr Marketplace (for resilient marketplaces)
- [ ] [NIP-16](nips/16.md) - Event Treatment
- [ ] [NIP-17](nips/17.md) - Private Direct Messages
- [ ] [NIP-18](nips/18.md) - Reposts
- [x] [NIP-19](nips/19.md) - bech32-encoded entities
- [ ] [NIP-20](nips/20.md) - Command Results
- [ ] [NIP-21](nips/21.md) - `nostr:` URI scheme
- [ ] [NIP-22](nips/22.md) - Event `created_at` Limits
- [ ] [NIP-23](nips/23.md) - Long-form Content
- [ ] [NIP-24](nips/24.md) - Extra metadata fields and tags
- [ ] [NIP-25](nips/25.md) - Reactions
- [ ] [NIP-26](nips/26.md) - Delegated Event Signing
- [ ] [NIP-27](nips/27.md) - Text Note References
- [ ] [NIP-28](nips/28.md) - Public Chat
- [ ] [NIP-29](nips/29.md) - Relay-based Groups
- [ ] [NIP-30](nips/30.md) - Custom Emoji
- [ ] [NIP-31](nips/31.md) - Dealing with Unknown Events
- [ ] [NIP-32](nips/32.md) - Labeling
- [ ] [NIP-33](nips/33.md) - Parameterized Replaceable Events
- [ ] [NIP-34](nips/34.md) - `git` stuff
- [ ] [NIP-35](nips/35.md) - Torrents
- [ ] [NIP-36](nips/36.md) - Sensitive Content / Content Warning
- [ ] [NIP-37](nips/37.md) - Draft Events
- [ ] [NIP-38](nips/38.md) - User Statuses
- [ ] [NIP-39](nips/39.md) - External Identities in Profiles
- [ ] [NIP-40](nips/40.md) - Expiration Timestamp
- [ ] [NIP-42](nips/42.md) - Authentication of clients to relays
- [x] [NIP-44](nips/44.md) - Versioned Encryption
- [ ] [NIP-45](nips/45.md) - Counting results
- [ ] [NIP-46](nips/46.md) - Nostr Connect
- [ ] [NIP-47](nips/47.md) - Wallet Connect
- [ ] [NIP-48](nips/48.md) - Proxy Tags
- [ ] [NIP-49](nips/49.md) - Private Key Encryption
- [ ] [NIP-50](nips/50.md) - Search Capability
- [ ] [NIP-51](nips/51.md) - Lists
- [ ] [NIP-52](nips/52.md) - Calendar Events
- [ ] [NIP-53](nips/53.md) - Live Activities
- [ ] [NIP-54](nips/54.md) - Wiki
- [ ] [NIP-55](nips/55.md) - Android Signer Application
- [ ] [NIP-56](nips/56.md) - Reporting
- [ ] [NIP-57](nips/57.md) - Lightning Zaps
- [ ] [NIP-58](nips/58.md) - Badges
- [ ] [NIP-59](nips/59.md) - Gift Wrap
- [ ] [NIP-60](nips/60.md) - Cashu Wallet
- [ ] [NIP-61](nips/61.md) - Nutzaps
- [ ] [NIP-62](nips/62.md) - Log events
- [ ] [NIP-64](nips/64.md) - Chess (PGN)
- [ ] [NIP-65](nips/65.md) - Relay List Metadata
- [ ] [NIP-66](nips/66.md) - Relay Monitor
- [ ] [NIP-68](nips/68.md) - Web badges
- [ ] [NIP-69](nips/69.md) - Peer-to-peer Order events
- [ ] [NIP-70](nips/70.md) - Protected Events
- [ ] [NIP-71](nips/71.md) - Video Events
- [ ] [NIP-72](nips/72.md) - Moderated Communities
- [ ] [NIP-73](nips/73.md) - External Content IDs
- [ ] [NIP-75](nips/75.md) - Zap Goals
- [ ] [NIP-77](nips/77.md) - Arbitrary custom app data
- [ ] [NIP-78](nips/78.md) - Application-specific data
- [ ] [NIP-84](nips/84.md) - Highlights
- [ ] [NIP-86](nips/86.md) - Relay Management API
- [ ] [NIP-87](nips/87.md) - Relay List Recommendations
- [ ] [NIP-88](nips/88.md) - Stella: A Stellar Relay
- [ ] [NIP-89](nips/89.md) - Recommended Application Handlers
- [ ] [NIP-90](nips/90.md) - Data Vending Machines
- [ ] [NIP-92](nips/92.md) - Media Attachments
- [ ] [NIP-94](nips/94.md) - File Metadata
- [ ] [NIP-96](nips/96.md) - HTTP File Storage Integration
- [ ] [NIP-98](nips/98.md) - HTTP Auth
- [ ] [NIP-99](nips/99.md) - Classified Listings
### Networking & Relay Support
- **Multi-Relay Queries**: Synchronous querying with progress callbacks
- **Relay Pools**: Asynchronous connection management with statistics
- **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
**Legend:** ✅ Fully Implemented | ⚠️ Partial Implementation | ❌ Not Implemented
### Developer Experience
- **System Dependencies**: Uses system-installed OpenSSL, curl, and secp256k1 libraries
- **Thread-Safe**: Core cryptographic functions are stateless
- **Cross-Platform**: Builds on Linux, macOS, Windows
- **Comprehensive Examples**: Ready-to-run demonstration programs
- **Automatic Versioning**: Git-tag based version management
**Implementation Summary:** 8 of 96+ NIPs fully implemented (8.3%)
## 📦 Blossom Protocol Support (BUD Implementation Status)
### Blossom Upgrade Documents (Client-Side Implementation)
- [ ] [BUD-01](blossom/buds/01.md) - Blob Retrieval - GET/HEAD endpoints for blob download
- [ ] [BUD-02](blossom/buds/02.md) - Upload/Management - Blob upload, listing, and deletion
- [ ] [BUD-03](blossom/buds/03.md) - User Server Lists - Managing preferred Blossom servers (kind 10063)
- [ ] [BUD-04](blossom/buds/04.md) - Mirroring - Copying blobs between servers
- [ ] [BUD-05](blossom/buds/05.md) - Media Optimization - Trusted server processing for media
- [ ] [BUD-06](blossom/buds/06.md) - Upload Requirements - Pre-upload validation with HEAD requests
- [ ] [BUD-07](blossom/buds/07.md) - Paid Operations - Payment handling (Cashu/Lightning)
- [ ] [BUD-08](blossom/buds/08.md) - NIP-94 Metadata - File metadata tag processing
- [ ] [BUD-09](blossom/buds/09.md) - Blob Reporting - Content moderation and reporting (NIP-56)
**Implementation Summary:** 0 of 9 client-relevant BUDs implemented (0%)
**Protocol Overview:** [Blossom README](blossom/README.md)
## 📦 Quick Start
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## 📈 Version History
Current version: **0.1.20**
Current version: **0.2.1**
The library uses automatic semantic versioning based on Git tags. Each build increments the patch version automatically.
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- **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
- **NIP-19 Support**: Bech32-encoded entities (nsec/npub)
- **Enhanced WebSocket**: OpenSSL-based TLS WebSocket communication
- **Production Ready**: Comprehensive test suite and error handling
- **Comprehensive Testing**: Extensive test suite and error handling
**Version Timeline:**
- `v0.2.x` - Current development releases with enhanced NIP support
- `v0.1.x` - Initial development releases
- 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
- Full NIP-01, NIP-04, NIP-05, NIP-06, NIP-11, NIP-13, NIP-19, NIP-44 support
## 🐛 Troubleshooting
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**Built with ❤️ for the decentralized web**
*OpenSSL-based • Minimal dependencies • Production ready*
*OpenSSL-based • Minimal dependencies • Work in progress*