Answer :
You must change the trust level to do any certificate imported into Kleopatra before you can use it to decrypt messages.
The process of restoring an encrypted message to its original (readable) format is known as decryption. The plaintext message is the original communication. The ciphertext message is the name given to the encrypted message. By encrypting the content, you can increase the security of a message or file. You need the right key to decrypt a message as well as the right key to encrypt it. The key to deciphering encoded data is held by both the sender and the recipient, making it the most effective method for concealing communication. There is a chance that a decryption tool will help you recover your deleted encrypted files.
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