[imp] Cannot enter PGP password

[Klaus Uhl]

Hi all,

I want to use message signing/encryption with IMP. For the S/MIME part 
everything works perfectly. I uploaded my certificate, I can enter my 
certificate password and I can sign and encrypt messages.

But I have problems with PGP. I was able to upload my keypair but when 
I enter the passphrase I get the response "Invalid passphrase entered." 
and the Apache log contains the following lines:

gpg: [don't know]: invalid packet (ctb=0a)
gpg: read_block: read error: invalid packet
gpg: import from `[stdin]' failed: invalid keyring
gpg: klaus at u-h-l.de: skipped: public key not found
gpg: [stdin]: encryption failed: public key not found

I had a quick look onto the IMP source and found out that validating 
the entered password is a two-step process. First a test message is 
encrypted with the public key and second the encrypted test message is 
decrypted with the secret key and the entered password. The Apache log 
suggests that it is _not_ my password which is wrong but the test 
message cannot be encrypted.

Does anyone have a clue what might go wrong? Any help would be appreciated.

- Klaus

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