Digital signature, signing as a method of authenticating digital information
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In 1992 Data Securities International was asked to become an associate member of the American Bar Association’s Information Security Group (ISC) of the Science and Technology Section working on Digital Signatures.
a Public key certificate, also known as a Digital Certificate or a Digital identity certificate, an electronic document which uses a digital signature to bind together a public key with an identity.
Although root access is available on the Droid X, the bootloader is secured and uses PKI to check the signature of the kernel.
Chester Wisniewski, a senior security advisor at Sophos, a computer security company, stated in 2011 that spam messages posted on Yahoo! Groups bypass spam filters by way of using digital signatures.
Buldas was a leading contributor to the Estonian Digital Signature Act and ID-card from 1996 to 2002, currently the only national-level public-key infrastructure (PKI) which has achieved widespread adoption by a country's population for legally binding digital signatures.
Lamport signature – The Lamport one-time signature scheme is a method for constructing a digital signature.