Security & Cryptography
Hardware-accelerated zero-knowledge hashing, AES encryption, keypair generators, and CSP evaluators.
Available Tools in this Suite
10 Utilities CatalogedSHA-256, SHA-512 & MD5 Hash Generator
Compute cryptographic hashes (SHA-256, SHA-512, SHA-384, SHA-1, MD5) with hardware acceleration via Web Crypto API.
Strong Password & Passphrase Generator
Generate cryptographically secure random passwords, memorable passphrases, and PINs with live entropy scoring.
BIP-39 Mnemonic Seed Phrase Generator
Generate secure 12 and 24-word cryptocurrency recovery seed phrases in-memory with Web Crypto CSPRNG.
HMAC Hash & Message Authentication Code Generator
Calculate keyed-hash message authentication codes (HMAC-SHA256, SHA512, SHA384, SHA1) with Web Crypto API.
Keccak-256 (Ethereum) Hash Calculator
Compute cryptographic Keccak-256 hashes used in Ethereum smart contracts from UTF-8 strings or raw hex.
Bcrypt Password Hash Generator & Checker
Generate secure salted Bcrypt password hashes with customizable cost factors and validate hash formats.
AES-GCM 256-bit Encryption Sandbox
Military-grade authenticated encryption using browser Web Crypto API with PBKDF2 key derivation and Base64 output.
RSA Key Pair Generator (2048 / 4096-bit)
Generate cryptographically secure public & private PEM key pairs in memory with one-click download.
Password Strength & Entropy Analyzer
Analyze cryptographic Shannon entropy, charset pool diversity, and brute-force crack time resistance.
IPv4 Subnet (CIDR) Calculator
Calculate netmask, broadcast, usable host ranges, wildcard mask, and network classification.
Security & Cryptography Architecture & Specifications
Local runtime benchmarks and security parameters for all Security & Cryptography utilities.
Real-World Workflows & Applications
Common technical problems solved with zero server dependencies.
Integrity Checksum Verification
Calculate SHA-256 or SHA-512 checksums of downloaded software or binaries to verify file integrity against tampered mirrors.
Encrypted Message Exchange
Encrypt sensitive text or passwords locally with AES-256 before transmitting over insecure channels or email.
Offline Blockchain Seed Generation
Generate BIP39 mnemonic phrases and seed words in an air-gapped browser tab with absolute zero network leakage.
Cryptographic Hashing & Encryption Standards
Standard specifications and quick-lookup reference table.
| Algorithm | Output Size | Security Level | Primary Application |
|---|---|---|---|
| SHA-256 | 256 bits (64 hex chars) | NIST Approved / Highly Secure | Digital signatures, Bitcoin, TLS certificates |
| SHA-512 | 512 bits (128 hex chars) | High Security / 64-bit Optimized | High-security checksums, Unix password hashes |
| Keccak-256 | 256 bits (64 hex chars) | Ethereum Standard | Ethereum smart contracts, address generation |
| AES-GCM | 128/256-bit symmetric key | Military-Grade Authenticated Cipher | Secure data storage, confidential communications |
| BIP-39 | 12–24 Mnemonic Words | CSPRNG Entropy Standard | Deterministic cryptocurrency wallet seeds |