Glossary

e-Transformation Terms Glossary

Short, factual definitions of the terms you often encounter in e-Signature, KEP, e-Notification and e-Correspondence, and in related Turkish legislation.

Denetim İzi (Audit Trail): A time-stamped, tamper-evident chain of records showing who created or modified a document, when, and from which IP address. In e-Signature flows it is kept in a certified manner.
e-Notification: A notification method with legal validity under Turkish Law No. 7201, delivered to the parties' electronic addresses through UETS (National Electronic Notification System).
e-Signature (Electronic Signature): Electronic data created under Turkish Law No. 5070 based on a qualified electronic certificate, with the same legal validity as a wet signature; bound to a single person, non-repudiation.
eIDAS: The EU regulation on Electronic Identification, Authentication and Trust Services; it governs cross-border recognition of trust services such as electronic signatures, seals and time stamps across the EU.
EYP (Electronic Correspondence Package): The e-Correspondence package standard defined by TSE (Turkish Standards Institute) that lets institutions prepare official inter-agency correspondence in a standard format (XML + attachments).
Hash (Digest Value): A fixed-length digest value produced algorithmically from a document's content; it changes completely when the content changes and serves as the mathematical proof of the document's integrity.
KEP (Registered Electronic Mail): A legal electronic mail service that uniquely identifies the sender and the recipient, and records the moment of sending and delivery as evidence.
KVKK: Turkish Law No. 6698 on the Protection of Personal Data, which regulates the processing, storage and protection of personal data in Türkiye; it sets compliance requirements for e-signature and e-government processes.
Law No. 5070 (Electronic Signature Law): Turkish Law No. 5070 that defines the legal framework for electronic signatures in Türkiye; an electronic signature created with a qualified electronic certificate (QEC) has the same legal validity as a wet (handwritten) signature.
Law No. 7201 (Notification Law): Turkish Law No. 7201 that regulates notification procedures in Türkiye; it forms the legal framework for electronic notification (e-Notification) sent through UETS.
Mobile Signature: An electronic signature created over the mobile operator infrastructure using a qualified electronic certificate held on a SIM card or mobile device; legally valid under Turkish Law No. 5070.
QEC (Qualified Electronic Certificate): A certificate issued by ESHS providers authorized by BTGM (Information and Communication Technologies Authority), used to create authenticated, secure electronic signatures.
Time Stamp: An electronic signature issued by a trusted third-party authority that proves an electronic datum existed at a specific date and time and has not been changed since.
UETS (National Electronic Notification System): The national system operated by PTT (Turkish postal service) where electronic notification addresses of legal and real persons are defined and e-Notification deliveries are carried out.
WORM (Write Once Read Many): A storage model where data is written once and cannot be modified afterwards, used for long-term archiving; it keeps e-Transformation documents intact throughout their legal retention periods.

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