Punchcard Key Backup

Free tool that backs up 128-bit cryptographic keys onto a physical punch-card medium.

Webfreeglobal

Punchcard Key Backup is a free tool that backs up a 128-bit cryptographic key onto a durable physical punch-card medium, offering an alternative to paper or digital-only key backups. It's aimed at people who need a long-term, physically durable backup of a critical short key.

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