title: GPG: How to delete bad session key and get asked for encryption password again?
body: <p>I tried to solve this Geocache: </p>
  
  <p><a href="https://www.geocaching.com/geocache/GC67EXW_signaturbruch" rel="noreferrer">https://www.geocaching.com/geocache/GC67EXW_signaturbruch</a></p>
  
  <p>And it gave me a password prompt, when I tried to solve <code>gpg message.asc</code>, but I didn't know the correct password back then. </p>
  
  <p>Now I know it, but it just wouldn't give me the password prompt again, no matter how I tried it. </p>
  
  <p>The output is as follows: </p>
  
  <pre><code>Martinas-Air:gpg martl$ gpg message.asc
  gpg: WARNING:  Kein Kommando angegeben.  Versuche zu raten was gemeint ist ...
  gpg: CAST5 verschlüsselte Daten
  gpg: Verschlüsselt mit einer Passphrase
  gpg: Entschlüsselung fehlgeschlagen: Bad session key
  </code></pre>
  
  <p>(I am on a German MacOs Mojave, 10.14.6 and my <code>gpg --version</code> gives me this: </p>
  
  <pre><code>Martinas-Air:gpg martl$ gpg --version
  gpg (GnuPG/MacGPG2) 2.2.17
  libgcrypt 1.8.4
  Copyright (C) 2019 Free Software Foundation, Inc.
  License GPLv3+: GNU GPL version 3 or later &lt;https://gnu.org/licenses/gpl.html&gt;
  This is free software: you are free to change and redistribute it.
  There is NO WARRANTY, to the extent permitted by law.
  
  Home: /Users/martl/.gnupg
  Unterstützte Verfahren:
  Öff. Schlüssel: RSA, ELG, DSA, ECDH, ECDSA, EDDSA
  Verschlü.: IDEA, 3DES, CAST5, BLOWFISH, AES, AES192, AES256, TWOFISH,
             CAMELLIA128, CAMELLIA192, CAMELLIA256
  Hash: SHA1, RIPEMD160, SHA256, SHA384, SHA512, SHA224
  Komprimierung: nicht komprimiert, ZIP, ZLIB, BZIP2)
  </code></pre>
  
  <p>Can somebody tell me, how can I get back to getting asked for the password again??? I searched whole Internet for solutions like "restart your computer", reinstall all gpg tools, delete all .gpg files and so on, but nothing would make it better. </p>
  
  <p>Thanks in advance. </p>