As far as I know it is not possible to search encrypted memos. What to do when I want to go through all me sent and received transfers containing an encrypted memo text?
The following script uses beem. More information about installing this can be found on the github site.
The following script asks for a username and a memo key. Then it go through the complete account history and decrypts all encrypted transfer memos. The decrypted text is printed and stored into a csv file.
Store the following lines into a file decrypt_memos.py.