Encrypt

Decrypt
Symmetric ciphers (like AES-256, Twofish-256) are quantum-safe. Most popular public-key cryptosystems (like RSA, DSA, ECDSA, EdDSA, DHKE, ECDH, ElGamal) are quantum-broken! Most digital signature algorithms (like RSA, ECDSA, EdDSA) are quantum-broken!