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The symmetric key is used only once and is also called a session key. The message and its session key are sent to the receiver. The session key must be sent to the receiver so they know how to decrypt the message, but to protect it during transmission it is encrypted with the receiver's public key.
In cryptography, the OpenPGP card [1] is an ISO/IEC 7816-4, -8 compatible smart card [2] that is integrated with many OpenPGP functions. Using this smart card, various cryptographic tasks (encryption, decryption, digital signing/verification, authentication etc.) can be performed. It allows secure storage of secret key material; all versions of ...
GnuPG is a hybrid-encryption software program because it uses a combination of conventional symmetric-key cryptography for speed, and public-key cryptography for ease of secure key exchange, typically by using the recipient's public key to encrypt a session key which is used only once. This mode of operation is part of the OpenPGP standard and ...
GoAnywhere OpenPGP Studio is a free desktop tool that protects sensitive files using the OpenPGP encryption standard. Documents can be encrypted, decrypted, signed and verified from a PC or workstation using this tool. An integrated key manager allows users to create, import, export and manage OpenPGP keys needed to encrypt and decrypt files.
GnuTLS (/ ˈ ɡ n uː ˌ t iː ˌ ɛ l ˈ ɛ s /, the GNU Transport Layer Security Library) is a free software implementation of the TLS, SSL and DTLS protocols. It offers an application programming interface (API) for applications to enable secure communication over the network transport layer, as well as interfaces to access X.509, PKCS #12, OpenPGP and other structures.
Seahorse (officially branded as Passwords and Secrets) is a GNOME front-end application for managing passwords, PGP and SSH keys. [4] [5] Seahorse integrates with a number of apps including Nautilus file manager, Epiphany browser and Evolution e-mail suite.
OpenKeychain is listed on the official OpenPGP homepage [5] and the well-known developer collective Guardian Project recommends it instead of APG to encrypt emails. [6] TechRepublic published an article about it and conclude that "OpenKeychain happens to be one of the easiest encryption tools available for Android (that also happens to best ...
pretty Easy privacy (p≡p or pEp) was a pluggable data encryption and verification system that provided automatic cryptographic key management through a set of libraries for written digital communications. It existed as a plugin for Microsoft Outlook [1] and Mozilla Thunderbird [2] as well as a mobile app for Android [3] [4] and iOS.