caption: ppp pretty good privacy
exif: {"Image DocumentName": "PGP - Pretty Good Privacy", "Image ImageDescription": "Autor: Phillip Zimmerman. Projeto para correio eletr\u00f4nico. Cifragem por chave \u00fanica. DES Triplo, CAST, IDEA, AES, Blowfish. Cifragem por chave p\u00fablica. RSA, Diffie-Hellman (DH/DSS) Fun\u00e7\u00e3o de Hash. MD5, SHA. Gratuito. Vers\u00e3o internacional (www.pgpi.com)", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}