CryptKit Security
Fast, privacy-focused online developer utilities. 100% browser-based with zero server lag.
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AES-256-GCM Text Encryption & Decryption Tool (Client-Side)
Encrypt and decrypt private messages and confidential payloads using military-grade AES-GCM (256-bit) and PBKDF2 passphrase key derivation.
HMAC Generator & Message Digest Verifier (SHA-256, SHA-512)
Compute cryptographic Hash-based Message Authentication Codes (HMAC) using SHA-256, SHA-384, and SHA-512 with hex and base64 digest outputs.
Password Entropy Calculator & CSPRNG Secure Password Studio
Calculate mathematical bits of password entropy, estimate brute-force cracking durations, and generate cryptographically secure randomized credentials.
RSA Public & Private Key Pair Generator (2048 / 4096-bit PEM)
Generate asymmetric RSA-OAEP / RSA-PSS 2048-bit and 4096-bit public and private key pairs formatted in industry-standard PEM blocks via native Web Crypto.
IPv4 CIDR Subnet Calculator & IP Range Inspector
Calculate network address, broadcast address, netmask, wildcard mask, usable host range, and total hosts from any IPv4 address and CIDR prefix.