Passphrase Generator
Generate easy-to-remember, highly secure passphrases using standard cryptographic dictionaries.
Recent History
Why use passphrases?
Passphrases combine multiple words randomly selected from a pre-defined catalog. Because a 4-word passphrase has a potential dictionary search breadth exceeding billions of variations, it is mathematically more difficult to break than complex short passwords, while remaining exceptionally easy to type and remember.
What is the Passphrase Generator?
The Passphrase Generator builds high-entropy credentials using multiple random English words from the EFF Diceware list. Unlike traditional complex passwords that are hard to remember, passphrases utilize length to resist brute-force cracks. They are highly memorable for human users but mathematically secure against dictionary attack programs.
How it Works
The tool selects random numbers to correspond with keys in the EFF Diceware English wordlist. Each word represents approximately 12.9 bits of entropy. A five-word passphrase provides over 64 bits of security, resulting in millions of possible combinations that dictionary crackers cannot easily calculate.
Benefits of local generation
- Easy memorization: Simple English words are easier to recall than string sequences.
- Superior length: Length provides the strongest defense against cracking hardware.
- Zero network logs: Operates completely offline.
Security Information
We utilize standard EFF Diceware arrays compiled client-side. The local script executes inside your browser sandbox and guarantees offline security.
Best Practices
- Select a minimum of 4 to 5 words for basic logins.
- Use hyphens or periods as separators to break simple search dictionaries.
- Do not construct logical sentences, as grammatical rules reduce randomness.