Data Encryption - Cryptoffsize

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            🔐 Military-Grade Encryption: We use AES-256 encryption, the same standard used by governments 
            and militaries worldwide to protect classified information.
        

1. Encryption Overview

Cryptoffsize implements multiple layers of encryption to protect your data at rest and in transit. We use industry-standard, battle-tested encryption algorithms that have been thoroughly vetted by cryptographic experts.

1.1 Encryption Principles

Defense in Depth: Multiple layers of encryption
Strong Algorithms: Only proven, modern encryption methods
Key Management: Secure key generation, storage, and rotation
No Backdoors: No intentional vulnerabilities or government backdoors
Regular Updates: Algorithms updated as cryptographic research advances

2. Private Key Encryption (Cold Wallet)

2.1 Algorithm: AES-256-GCM

AES-256 GCM Mode 256-bit Keys

Private keys are encrypted using AES-256 in Galois/Counter Mode (GCM), which provides:

Confidentiality: Data cannot be read without the key
Authentication: Ensures data hasn't been tampered with
Performance: Fast encryption/decryption
NIST Approved: Recommended by US National Institute of Standards and Technology

2.2 Why AES-256?

🔢 256-bit Key Space:
AES-256 has 2²⁵⁶ possible keys (approximately 1.15 × 10⁷⁷).
To put this in perspective: Testing 1 trillion keys per second, it would take 3.67 × 10⁶⁰ years to try all combinations. The universe is only 13.8 billion years old.

Unbreakable: No known practical attack against AES-256
Quantum Resistant: Secure against current and near-future quantum computers
Government Grade: Approved for TOP SECRET information by NSA
Industry Standard: Used by banks, governments, and major tech companies

2.3 Encryption Process

Key Generation: Master encryption key generated using cryptographically secure random number generator (CSPRNG)
Initialization Vector (IV): Unique IV generated for each encryption operation
Encryption: Private key encrypted with AES-256-GCM using master key and IV
Authentication Tag: GCM generates authentication tag to verify data integrity
Storage: Encrypted private key + IV + Auth tag stored in cold wallet

3. Password Encryption

3.1 Algorithm: bcrypt

bcrypt Cost Factor: 12 Salted

User passwords are hashed using bcrypt with a cost factor of 12:

One-Way Function: Cannot be reversed (hashed, not encrypted)
Adaptive: Cost factor increases as computers get faster
Salt: Unique salt per password prevents rainbow table attacks
Slow by Design: Intentionally slow to prevent brute force attacks

3.2 Why bcrypt?

Time-Tested: Used successfully for over 20 years
Brute Force Resistant: Each hash attempt takes ~250ms
Future Proof: Cost factor can be increased as needed
Standard Compliant: Follows password hashing best practices

            🚫 What We Don't Use: MD5, SHA1, SHA256 for passwords (too fast, insecure for passwords)
        

4. Database Encryption

4.1 Data at Rest

AES-256-ECB Column-Level

Data Type	Encryption Level	Method
Private Keys	Application-Level	AES-256-GCM (in cold wallet)
Email Addresses	Database-Level	AES-256-ECB
Passwords	Application-Level	bcrypt (hashed)
Transaction Data	Disk Encryption	Full Disk Encryption (FDE)

4.2 Full Disk Encryption

Server Disks: All server disks encrypted with LUKS (Linux Unified Key Setup)
Backup Storage: Encrypted backups stored with AES-256
Key Management: Encryption keys stored in secure Hardware Security Module (HSM)

5. Transport Layer Encryption

5.1 TLS 1.3

TLS 1.3 Perfect Forward Secrecy HSTS Enabled

All data transmitted between your device and our servers is encrypted using TLS 1.3:

Latest Protocol: TLS 1.3 (published 2018) is the most secure version
Faster Handshake: Reduced latency compared to TLS 1.2
Forward Secrecy: Past sessions cannot be decrypted if key is compromised
Strong Ciphers Only: Weak cipher suites disabled

5.2 Supported Cipher Suites

We support only strong, modern cipher suites:

TLS_AES_256_GCM_SHA384
TLS_CHACHA20_POLY1305_SHA256
TLS_AES_128_GCM_SHA256

📜 HSTS (HTTP Strict Transport Security): Forces all connections to use HTTPS, preventing downgrade attacks and man-in-the-middle attacks.

6. Session Encryption

6.1 Session Data Protection

AES-256-CBC Encrypted Sessions

Session Encryption: All session data encrypted with AES-256-CBC
Secure Storage: Sessions stored encrypted in database or memory
Session Regeneration: New session ID after login
HttpOnly Cookies: Session cookies not accessible to JavaScript

7. Key Management

7.1 Master Key Protection

Master encryption keys are protected using multiple layers:

Hardware Security Module (HSM): Keys stored in tamper-resistant hardware
Key Splitting: No single person has access to complete keys
Multi-Signature: Multiple approvals required for key access
Geographic Distribution: Key fragments stored in different locations

7.2 Key Rotation

Regular Rotation: Encryption keys rotated on schedule
Compromise Response: Immediate key rotation if compromise suspected
Backward Compatibility: Old keys maintained for decrypting existing data
Automated Process: Key rotation automated to minimize human error

8. Encryption Standards Compliance

8.1 Industry Standards

FIPS 140-2 NIST ISO 27001

Our encryption implementation follows:

FIPS 140-2: Federal Information Processing Standard for cryptographic modules
NIST Guidelines: National Institute of Standards and Technology recommendations
ISO/IEC 27001: International standard for information security management
OWASP: Open Web Application Security Project cryptography guidelines

9. What We Don't Encrypt

9.1 Public Data

Some data is intentionally not encrypted as it's public by nature:

Blockchain Transactions: Public on TRON blockchain (by design)
Wallet Addresses: Public keys visible on blockchain
Transaction Hashes: Public identifiers on blockchain

9.2 Why Some Data Must Be Public

🔗 Blockchain Nature: Cryptocurrencies work on public blockchains. Wallet addresses and transaction details must be public for the network to function. However, addresses are pseudonymous (not linked to real identity).

10. Encryption Limitations

10.1 What Encryption Cannot Protect Against

While our encryption is extremely strong, it cannot protect against:

Phishing: If you give away your password, encryption won't help
Keyloggers: Malware on your device can capture passwords before encryption
Social Engineering: Tricking you into revealing information
Physical Access: If attacker has physical access to your device
Insider Threats: Malicious insiders with authorized access

10.2 Your Responsibilities

            🛡️ User Security: Encryption protects data in our systems, but you must:
            Use strong, unique passwords
Keep your email account secure (used for 2FA)
Protect your devices from malware
Never share your password or 2FA codes
Beware of phishing attempts

        

11. Future-Proofing

11.1 Quantum Computing Considerations

We monitor developments in quantum computing:

Current Status: AES-256 is considered quantum-resistant (would require doubling key size)
Migration Plan: Ready to migrate to post-quantum cryptography when needed
Research: Following NIST post-quantum cryptography standardization

11.2 Algorithm Updates

Deprecation Plan: Older algorithms phased out as needed
Security Research: Monitoring cryptographic research for vulnerabilities
Rapid Response: Can quickly update if vulnerabilities discovered

12. Transparency

12.1 Open About Methods

We are transparent about our encryption methods (as documented here) because:

No Security Through Obscurity: Strong encryption doesn't rely on secrecy of method
Peer Review: Public disclosure allows security community to review
User Trust: Transparency builds confidence

12.2 Continuous Improvement

We continuously update our encryption practices based on:

Latest cryptographic research
Security audit findings
Industry best practices
Emerging threats and vulnerabilities

Your data is protected by military-grade encryption, the gold standard in data security.