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Re: [openpgp] Deriving an OpenPGP secret key from a human readable seed

Kai Engert <kaie@kuix.de> Tue, 15 October 2019 12:23 UTC

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From: Kai Engert <kaie@kuix.de>
To: openpgp@ietf.org
References: <5eb8774d-8d4f-63e3-29bc-53f3c8d21c51@kuix.de>
Autocrypt: addr=kaie@kuix.de; keydata= xsFNBE8oE/UBEAC/Vx4tHVkfPdGf0BFMGcidXzAXKQ4+gI2F5rPBoV9fEtYngLHzm7+a6DL2 v5Jl5b4by9KtUbfIJysR1iniLWMJVPXZcyC4ovGouZ4MGK5cD9kMy+JdwebCs5/tj51vcvrS 08dP7r9Q0f0H7tsqhtVWuPFt+ZZEj8fIxjMgE3Z5BcyoGT1mXQ544RA0vr0fB9MngvfteD3L /wL2miDnYVtwB+VHC6kEB75Pte/yz1kFc/TDqKT8F45M3invhccY8Zwe7F88+uS+tgR5B3Ga RMc9WChZr5ed5vRxSLrGqBGSWBKomKuWXNFVMrZAOaq+W/+kOdNSXLdJSvXIAgV4Gywf1D0r ZTi8V+UoiTY8eDfT4OlBJrbbkge92/lrqaorAsuo/DVmfv7ARk7q2jvbSZD39zkWpLNsAulz gZOr+ffEHKy0f9fNwzenHpKvNtTUWGChEyDf7a6EtTBZsxAYco0xAtFOoQVwx5UzZk4tMVhv lrATrvmFdK5SLroDuwtSLUBJ5MhICyaB1kN7YSatQs33D+M5oPKVC+mn1WB/nznU475cssBW Asw+/K4VtXN08HxVFEvpV5MtpoYGe/cqsV87aVr/Igg45DVKtMMK8W5AmJDdGru3caxdVkkW fis9F1GBkk7ZPgip4cprh3KicuKsXhVrjk2mC/kCR+mrlY8ncQARAQABzSNLYWkgRW5nZXJ0 IChhdCB3b3JrKSA8a2FpZUBrdWl4LmRlPsLBegQTAQIAJAIbAwIeAQIXgAIZAQUCVdbtjAUL CQgHAwUVCgkICwUWAgMBAAAKCRAcJ0I3JQB3JEoOEAC9YaJFZCdCFXMb9HkQ4TS1z813EgTO lDFQwQ9vF26edvBjm80xcLQYUN5iRr6RNcHpx6FZLUX+AwAB5Cf2swVjvZB3LycwlKyKVuwd bXoLHPgq0XVu2l/ZbEKKmIR70UGAL/CKmZZm5rimicD1B5P+VXrnSl8uA7MjQFNnWnDuDHGk 9A/dl7RAEAenAiFlRFR5lwu9U/4TG0OrACgp7OIls3/jcszRRMJrc5OiTGWPq4d+Bo3a1yqA fdS2VjMObO8+zO7+4tact5uVFxrbMIRULKP0xJC/X77koUyn6ZSFIyFjJR2I/p4PCCLD0soJ 06e1e9bKUsKowFGwrvMnXqGEA4lij22R80paRH7VQ0QKQW9RDSqlF1YUafHpCt9D5i7HG2Ft ZgYz7VlfS27YMvG6Np+fN5Devh9Hap6fK5+SBTcs8v0Tgf8Ljx7OlajRHNtBxqRcPghnCZTJ oQpAJup5TYeqSGyp/Q2VT80h9iySGfBnn30qhcTr5lqOg/2NvQeu9wNVKBPmr8QpCfYb7ENZ CBifohzqBV8D6HaoBFeNts37kugcMWTw4C/RCtYI8TnjR18caDkc3kDh5p6anLnnQhCnGSVu LFj52lazHkj3FE+Ijg8ir95hm0d4PWZqk5UNfEPUa6ltBkHZstdpBvtqN+HxXpovqf8agBaZ ol2vXc7BTQRPKBP1ARAA54JU09VzBOPw44IYINiuQAEeyikO5sLT+Ixee8MM+T8tXk0Z9RSw UVctu8DwM+f8NjRI+dvmGSgezsiNL1ZkVuN37GM4dg7ZJ8oZCB5/YQQCCx1z7q4d68XsEfTs edl+Y2GcggbR6EpN4RbR38N6uhwKFZw0meuP6m1NaRCnihciJrXdoKxXcoHAxy3balGTPAbv OUmQaqI7dY5DVFPOT5I2wl1cWbkkTcx4wu8190sSMeW/IbwIg7inC/nqXCSKL633+Hv/2GcV zvBNK8JxO5YaHuHl+GBwP6cHlotHd2qr/BSyhYCt3CcMDHXR+vwSwawC+/zUpR5THrVLT6E/ hlpAZX5HQsY9BMrllI0Ap7MClj+kvRlkukNfc3/CKpAL1RjDV5+sr91ffBNXbZgpsp3/uCI6 QuJpFdUY8js5aYNwHCFbX8xkzdFqG95vt+uNoq/F7p7dEQi3BE0H2b0c4kuJX4G9MrAKdyfY r1KiPX513AQeIXZCE9UogON5jvKF6PBTTuzomsCZBa9ExbkLv+uCm7Q+EC4WwvvpbUaaLpmu t+oqnsSrYehg4ydm5NRhgfJy+Ris1sKAptyA7AlDWWsP5fFZE0rxeoDrTdbX6JVjxT509DtW a4rI0qgGTt625J6irm6nfbF8M1V5ZaBmSstWC/PDdggsfl35abQHxk8AEQEAAcLBXwQYAQIA CQUCTygT9QIbDAAKCRAcJ0I3JQB3JA5FEACCSZIzygwTFoOcFciojcbY3uvNamflJ0fMAv+h wO/Blprd1cHBmI0dQoTbpQ4NX33f9PVh4X9eCrxMCzUKB8RBS5ZNk5P0PYhJNooqKTmM3JIl coyvTruz9/Q2nbPA6z+0c7KJpmdJKn60vZfR4UDfwIOEqYvrZRbld3Bv1XXUQ6NHWvX6x2Ft vmASNON5m7ml4zwH6qSASJ0JZo0CuLwSOanmc5r+rDwtHHGqEpp6VwXpcPyF6ZUG5i0rU4OT H2y0kOb+7igK25LmjiXFNqbQb+K4lchVpxIGV6MvW6GAd3L0ei8cnYccZhAoPNCbKgEIA7qW 8g93U6Wf+P0yu9DbOqz2ETXoEqRJVDNLTrrvKyRYBDNpqvleUJtBHMnpU1Oqhf+ddCT292Ux fK9CoQe+st1QD5Mazlrnw4PuH7etS/Y2na7rXwqvop/IIu6Ba90/nddv/0cqvaRaDFYVN6HU GATLienjv0yS0QVTf/2x7B2NCtyT3lqRHrFByzm0FPAFxbr1HFJgE5CPGrmCn6ToR77gNBkL KUU3MVTGTRe35JHc5QVFuUwcrRBT/EcK8A3u0wmORswNnDylisYhzrw0RuS6WSvhAvuVQ0yF uh6SYw72DFmbX/h1A9BBMZ50tJtgqbD4Q+74J44SP8RD7qspTk6NNBa6D835NLx652yXwQ==
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Date: Tue, 15 Oct 2019 14:23:32 +0200
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Archived-At: <https://mailarchive.ietf.org/arch/msg/openpgp/9-N2LRGi9XfRhSgyfiuKMJGiYPg>
Subject: Re: [openpgp] Deriving an OpenPGP secret key from a human readable seed
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On 15.10.19 14:16, Kai Engert wrote:
> 
> A full recovery mnemonic based on a 128 bit seed could consist of 15
> words, 3 bytes for the descriptor prefix and 12 bytes for the seed.

3 words and 12 words (not bytes)

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