🧬 DNAPass Password Generator

DNAPass generates passwords using DNA-inspired sequences:

🎲 Sequence Selection

DNAPass uses two sets of DNA-inspired sequences:

• Primary Sequences: A list of 200 DNA sequences derived from biological motifs, including ambiguous characters (e.g., 'N', 'R'). Selected with a 90% probability.
• Secondary Sequences: A smaller set of 8 sequences restricted to the nucleotides A, T, C, and G, selected with a 10% probability.

🤹 Ambiguity Resolution

Primary sequences often contain ambiguous characters defined by the IUPAC nucleotide code. These are resolved randomly using a predefined mapping:

• 'N': Random choice from ['A', 'T', 'C', 'G']
• 'R': Random choice from ['A', 'G']
• 'Y': Random choice from ['C', 'T']
• And so on...

🔣 Character Diversity

To ensure password strength, DNAPass enforces:

• Uppercase Letters: At least 10% of the password length (minimum 1)
• Lowercase Letters: At least one lowercase letter
• Digits: At least 2 digits for passwords < 50 characters, or 3 for ≥ 50 characters
• Special Characters: At least 4 special characters from a predefined set
• No Spaces: Any spaces are removed

📈 Entropy Considerations

The entropy of a DNAPass-generated password is influenced by:

• Sequence Selection: With 200 primary and 8 secondary sequences
• Ambiguity Resolution: Each ambiguous character has multiple possible outcomes
• Character Modifications: Adding digits, special characters, and case variations
• Random Shuffling: Ensures no predictable structure

For a 12-character password, DNAPass typically achieves entropy above NIST's 80-bit recommendation for high-security passwords.