PGP File Documentation

Overview

Feature Value
File Extension .pgp, .gpg
MIME Type application/pgp-encrypted
Encryption Public Key based
Digital Signature Supported
Compression ZIP, ZLIB, BZIP2
Usage Email security, File encryption
Public Key Algorithms RSA, Elgamal
Hash Algorithms SHA-1, SHA-256, SHA-384, SHA-512, MD5
Symmetric Key Algorithms AES, 3DES, CAST5
Key Sizes 1024 to 4096 bits for RSA
File Integrity Checksum or cryptographic hash
Key Expiry Adjustable
Revocation Revocation certificates supported
Web of Trust Decentralized trust model
ASCII Armor Text-based encoding for binary data
Key Management Public key servers, local keyrings
Multi-user Encryption Supported
Session Keys One-time-use symmetric keys for encryption
Metadata Privacy Filename and modification time can be encrypted