Create Document Hash and Verification Library

[mftee]

Build cryptographic hashing library for document integrity verification

Description:
Develop a Rust library that generates cryptographic hashes of documents and verifies their integrity.

Requirements:

• Support multiple hash algorithms (SHA-256, SHA-512, BLAKE3)
• Merkle tree generation for multi-document verification
• Streaming hash calculation for large files
• Signature generation and verification (Ed25519)
• Hash comparison utilities
• CLI tool for hashing files
• Node.js FFI bindings
• Performance benchmarks
• Constant-time comparisons

Acceptance Criteria:

• Hashes are cryptographically secure
• Merkle tree implementation is correct
• Handles files >100MB efficiently
• Signatures verify correctly
• CLI tool is user-friendly
• FFI bindings are performant
• Unit tests with edge cases
• Security audit recommendations followed

[thebabalola]

@thebabalola has applied to work on this issue as part of the Stellar Wave Program's 1st wave.

Hi ..
I’d like to take on. I’ll implement a clean Rust library for generating and validating document hashes and verification metadata, with clear interfaces for Stellar anchoring.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @thebabalola to this issue.

[ShantelPeters]

@ShantelPeters has applied to work on this issue as part of the Stellar Wave Program's 1st wave.

I’m eager to work on the cryptographic hashing library because it combines my expertise in Rust, performance-critical systems, and security-focused development. I have experience implementing cryptographic primitives and designing libraries with constant-time operations, streaming support for large files, and robust FFI bindings. I can deliver multi-algorithm hashing (SHA-256, SHA-512, BLAKE3), Merkle tree generation for multi-document verification, and Ed25519 signature support, along with a performant CLI tool and Node.js integration. My background ensures secure, efficient, and thoroughly tested implementations suitable for real-world integrity verification scenarios.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @ShantelPeters to this issue.

[ryzen-xp]

@ryzen-xp has applied to work on this issue as part of the Stellar Wave Program's 1st wave.

Hi maintainers 👋
I’m a blockchain developer with strong expertise in Stellar, Rust,TS and Stellar SDK integrations. I’ve worked on multiple Stellar-based smart contract and backend systems.

I understand the scope of this issue and can deliver a reliable, production-quality solution with proper tests and documentation.
Plz assign me !!

ETA: 24 hours

ℹ️ Repo Maintainers: To accept this application, review their application or assign @ryzen-xp to this issue.

[ryzen-xp]

@ryzen-xp has applied to work on this issue as part of the Stellar Wave Program's 1st wave.

Hi maintainers 👋
I’m a blockchain developer with strong expertise in Stellar, Rust,TS and Stellar SDK integrations. I’ve worked on multiple Stellar-based smart contract and backend systems.

I understand the scope of this issue and can deliver a reliable, production-quality solution with proper tests and documentation.
Plz assign me !!

ETA: 24 hours

ℹ️ Repo Maintainers: To accept this application, review their application or assign @ryzen-xp to this issue.