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I'm an open source developer working primarily in cryptographic applications. I author the widely used acmetool Let's Encrypt/ACME client.

Featured work

  1. hlandau/acmetool

    🔒 acmetool, an automatic certificate acquisition tool for ACME (Let's Encrypt)

    Go 2,065
  2. hlandau/passlib

    🔑 Idiotproof golang password validation library inspired by Python's passlib

    Go 290

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What‽ Your browser did something unexpected. Please try again. If the error continues, try disabling all browser extensions. Please contact us if the problem persists. Contact Support — GitHub Status — @githubstatus