opmsg
File encryption, sign and verify utility


opmsg is a replacement for gpg which can encrypt/sign/verify your mails or create/verify detached signatures of local files. Even though the opmsg output looks similar, the concept is entirely different. * Perfect Forward Secrecy (PFS) by means of ECDH or DH Kex. * Native EC or RSA fallback if no (EC)DH keys left. * Signing messages is mandatory. * OTR-like deniable signatures if demanded. * Support for 1:1 key bindings to auto-select source key per destination. * Adds the possibility to (re-)route messages different from mail address to defeat meta data collection. * Key format suitable for easy use with QR codes. * Optional cross-domain ECDH Kex.

GPL-3.0-or-later

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