GPG: How to change/edit Private Key Passphrase?

You might forget your GPG private key’s passphrase. You need your private key’s passphrase in order to decrypt an encrypted message or document which is encrypted using your public key. So, if you lost or forgot it then you will not be able to decrypt the messages or documents sent to you. You don’t have … Read more

GPG: Encryption, Decryption & Digital Signature with Public & Private Key [A Complete Tutorial]

GNU Privacy Guard (GnuPG or GPG) is a free cryptographic software that can secure data transfer and communication between two parties by encrypting, signing and verifying data. Public Key Cryptography GnuPG uses public-key cryptography to communicate securely between two parties. In a public-key system, each user has a pair of keys: a private key and … Read more

Cryptography: Public-key Encryption & Digital Signature

History Public-key encryption makes key-management much easier. It was invented in 1976 by two Stanford mathematicians, Whitfield Diffie and Martin Hellman. Their discovery can be phrased simply: enciphering schemes should be asymmetric. For thousands of years all ciphers were symmetric—the key for encrypting a message was identical to the key for decrypting it, but used, … Read more