Show HN: PunchCard Key Backup
a year ago
- #punched-cards
- #cryptography
- #data-backup
- A project allows backing up 128 bits of information into a physical medium using punched cards.
- The process involves using a self-contained HTML tool to generate a hole punching pattern for an aluminium sheet.
- Materials needed include an aluminium sheet, punch tool, small drill, cutter, and a stencil for guidance.
- Recovery of the information is done via the same HTML tool by matching punched holes to checkboxes.
- The project suggests using cryptographic tools like age or GnuPG for encrypting data with a 128-bit password.
- The method supports secret sharing and is licensed under CC BY 4.0, with flexibility for alternative licensing upon request.