Encryption

I've gotten encrypted posts to work, so if a post seems nothing more than meaningless line noise, it needs decryption. In most cases the decryption key will be available. An example of encrypted text:

5ixPb4231zWJJ15H5rPb/lVKVnI/emA3qgCrco2EFIN9guK8\n
Kclwx4b5+fyG7p8PFN4SNAuQH0GOXlxaNeig55lWuBZ3kH2c\n
MZPHujjqFgA=

Decrypt text (passwd is 'decrypt-me')

---
Yesterday upon the stair
I met a man who wasn't there
He wasn't there again today
I think he's with the CIA