File Security

AES-256 encryption, digital signatures, and integrity proofs

Encrypt any file with military-grade AES-256. Verify integrity with SHA-256 hashes. Sign documents with RSA digital signatures. Preview encrypted files without downloading — zero-knowledge architecture.

AES-256Advanced Encryption Standard with 256-bit keys
SHA-256Cryptographic hash verification for file integrity
RSAAsymmetric digital signatures for document authenticity
Zero-KZero-knowledge architecture — we never see your plaintext

Features

Enterprise-grade cryptographic protection for trade documents

Block 1hash: a3f2...prev: 0000...Block 2hash: b7e4...prev: a3f2...Block 3hash: c9d1...prev: b7e4...RSAPubPrivValidUploadtrade_doc.pdfSHA-256Hash generatedCertifiedIntegrity proven
File Encryption

AES-256-GCM encryption applied client-side before upload. Unique encryption keys per file with secure key wrapping. Decrypt only on authorized devices.

Hash Verification

SHA-256 hash computed on upload and stored immutably. Verify file integrity at any time — detect tampering, corruption, or unauthorized modification instantly.

Digital Signatures

RSA-2048 digital signatures for document authenticity. Sign purchase orders, invoices, and contracts. Third-party verifiable without platform access.

Zero-Download Preview

Preview encrypted PDFs, images, and documents in the browser without downloading. Server-side rendering in a secure enclave — file never touches disk.

Integrity Certificates

Generate tamper-proof integrity certificates for any file. Includes hash, timestamp, and digital signature. Share as proof of document authenticity.

Audit Trail

Every access, download, and share logged with immutable timestamps. Export audit reports for compliance. Role-based access controls with IP restrictions.

Try It: Hash Verification

Interactive
Original:a3f2c8d1b7e4f2a9...c9d1e5f3a2b8
Current:a3f2c8d1b7e4f2a9...c9d1e5f3a2b8

Who Uses This

Trade Auditor

Verifies authenticity of trade documents across counterparties

SHA-256 hash verification detects any tampering. Integrity certificates provide cryptographic proof of document authenticity.

Legal Counsel

Signs contracts and purchase orders for international deals

RSA-2048 digital signatures are third-party verifiable. Timestamped audit trail proves exactly when documents were signed.

IT Security

Enforces data protection policies across the organization

Zero-knowledge architecture means server compromise cannot expose plaintext. Role-based access controls with IP restrictions.

Trusted by traders worldwide

10M+Files encrypted
100%Hash verification rate
25K+Digital signatures
0Integrity failures

Frequently Asked Questions

Protect your trade documents

File encryption included with every TradeStance account. Digital signatures available on Pro plans.