Detached signature

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A detached signature is a type of digital signature that is kept separate from its signed data, as opposed to bundled together into a single file.

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Ibanez is a Japanese guitar brand owned by Hoshino Gakki. Based in Nagoya, Aichi, Japan, Hoshino Gakki were one of the first Japanese musical instrument companies to gain a significant foothold in import guitar sales in the United States and Europe, as well as the first brand of guitars to mass-produce the seven-string guitar and eight-string guitar. Ibanez manufactures effects, accessories, amps, and instruments in Japan, China, Indonesia, and the United States. As of 2017 they marketed nearly 165 models of bass guitar, 130 acoustic guitars, and more than 300 electric guitars. After Gibson and Fender, Ibanez is considered the third biggest guitar brand.

A signature is a handwritten depiction of someone's name, nickname, or even a simple "X" or other mark that a person writes on documents as a proof of identity and intent. The writer of a signature is a signatory or signer. Similar to a handwritten signature, a signature work describes the work as readily identifying its creator. A signature may be confused with an autograph, which is chiefly an artistic signature. This can lead to confusion when people have both an autograph and signature and as such some people in the public eye keep their signatures private whilst fully publishing their autograph.

<span class="mw-page-title-main">Digital signature</span> Mathematical scheme for verifying the authenticity of digital documents

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In cryptography, a public key certificate, also known as a digital certificate or identity certificate, is an electronic document used to prove the validity of a public key. The certificate includes the public key and information about it, information about the identity of its owner, and the digital signature of an entity that has verified the certificate's contents. If the device examining the certificate trusts the issuer and finds the signature to be a valid signature of that issuer, then it can use the included public key to communicate securely with the certificate's subject. In email encryption, code signing, and e-signature systems, a certificate's subject is typically a person or organization. However, in Transport Layer Security (TLS) a certificate's subject is typically a computer or other device, though TLS certificates may identify organizations or individuals in addition to their core role in identifying devices. TLS, sometimes called by its older name Secure Sockets Layer (SSL), is notable for being a part of HTTPS, a protocol for securely browsing the web.

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Post-quantum cryptography (PQC), sometimes referred to as quantum-proof, quantum-safe, or quantum-resistant, is the development of cryptographic algorithms that are thought to be secure against a cryptanalytic attack by a quantum computer. The problem with popular algorithms currently used in the market is that their security relies on one of three hard mathematical problems: the integer factorization problem, the discrete logarithm problem or the elliptic-curve discrete logarithm problem. All of these problems could be easily solved on a sufficiently powerful quantum computer running Shor's algorithm or even faster and less demanding alternatives.

Docusign American software company

Docusign, Inc. is an American company headquartered in San Francisco, California, that allows organizations to manage electronic agreements with electronic signatures on different devices. As of 2024, Docusign has about 1.5 million clients in 180 countries. Signatures processed by Docusign are compliant with the US ESIGN Act and the European Union's eIDAS regulation, including EU Advanced and EU, Qualified Signatures.

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