A digital signature is a mathematical scheme for verifying the authenticity of digital messages or documents. A valid digital signature on a message gives a recipient confidence that the message came from a sender known to the recipient.
An electronic signature, or e-signature, is data that is logically associated with other data and which is used by the signatory to sign the associated data. This type of signature has the same legal standing as a handwritten signature as long as it adheres to the requirements of the specific regulation under which it was created.
The Electronic Signatures in Global and National Commerce Act is a United States federal law passed by the U.S. Congress to facilitate the use of electronic records and electronic signatures in interstate and foreign commerce by ensuring the validity and legal effect of contracts entered into electronically.The Act was signed into law by President Bill Clinton on June 30, 2000, and took effect on October 1, 2000.
A mobile signature is a digital signature generated either on a mobile phone or on a SIM card on a mobile phone.
Electronic authentication is the process of establishing confidence in user identities electronically presented to an information system. Digital authentication, or e-authentication, may be used synonymously when referring to the authentication process that confirms or certifies a person's identity and works. When used in conjunction with an electronic signature, it can provide evidence of whether data received has been tampered with after being signed by its original sender. Electronic authentication can reduce the risk of fraud and identity theft by verifying that a person is who they say they are when performing transactions online.
XAdES is a set of extensions to XML-DSig recommendation making it suitable for advanced electronic signatures. W3C and ETSI maintain and update XAdES together.
The Electronic Commerce Regulations 2002, SI 2002/2013, incorporates the EU Electronic Commerce Directive 2000/31/EC into the law of the United Kingdom. They apply to contracts concluded by electronic means over distance whereby the buyer is a consumer. This subordinate legislation provides for rights of the consumer and provisions for which the seller is obliged to fulfill.
Amateur chemistry or home chemistry is the pursuit of chemistry as a private hobby. Amateur chemistry is usually done with whatever chemicals are available at disposal at the privacy of one's home. It should not be confused with clandestine chemistry, which involves the illicit production of controlled drugs. Notable amateur chemists include Oliver Sacks and Sir Edward Elgar.
CAdES is a set of extensions to Cryptographic Message Syntax (CMS) signed data making it suitable for advanced electronic signatures.
PAdES is a set of restrictions and extensions to PDF and ISO 32000-1 making it suitable for advanced electronic signatures (AdES). This is published by ETSI as EN 319 142.
Electronic signature allows users to electronically perform the actions for which they previously had to give a signature on paper. Estonia's digital signature system is the foundation for some of its most popular e-services including registering a company online, e-banks, the e-voting system and electronic tax filing – essentially any services that require signatures to prove their validity.
The Electronic Signatures Directive 1999/93/EC was a European Union directive on the use of electronic signatures (e-signatures) in electronic contracts within the European Union (EU).
eIDAS is an EU regulation with the stated purpose of governing "electronic identification and trust services for electronic transactions". It passed in 2014 and its provisions came into effect between 2016 and 2018.
An advanced electronic signature is an electronic signature that has met the requirements set forth under EU Regulation No 910/2014 (eIDAS-regulation) on electronic identification and trust services for electronic transactions in the European Single Market.
A qualified electronic signature is an electronic signature that is compliant with EU Regulation No 910/2014 for electronic transactions within the internal European market. It enables to verify the authorship of a declaration in electronic data exchange over long periods of time. Qualified electronic signatures can be considered as a digital equivalent to handwritten signatures.
A trust service provider (TSP) is a person or legal entity providing and preserving digital certificates to create and validate electronic signatures and to authenticate their signatories as well as websites in general. Trust service providers are qualified certificate authorities required in the European Union and in Switzerland in the context of regulated electronic signing procedures.
In the context of Regulation (EU) No 910/2014 (eIDAS), a qualified digital certificate is a public key certificate issued by a trust service provider which has government-issued qualifications. The certificate is designed to ensure the authenticity and data integrity of an electronic signature and its accompanying message and/or attached data.
A secure signature creation device (SSCD) is a specific type of computer hardware or software that is used in creating an electronic signature. To be put into service as a secure signature creation device, the device must meet the rigorous requirements laid out under Annex II of Regulation (EU) No 910/2014 (eIDAS), where it is referred to as a qualified (electronic) signature creation device (QSCD). Using secure signature creation devices helps in facilitating online business processes that save time and money with transactions made within the public and private sectors.
A qualified website authentication certificate is a qualified digital certificate under the trust services defined in the European Union eIDAS Regulation.
An electronic seal is a piece of data attached to an electronic document or other data, which ensures data origin and integrity. The term is used in the EU Regulation No 910/2014 for electronic transactions within the internal European market.
