eimza

Eimza, or e-imza, is the term used for electronic signatures in Turkish-speaking contexts. It refers to a digital signature that can be attached to electronic documents to verify the identity of the signer, ensure data integrity, and provide non-repudiation. E-imza is typically implemented using public key infrastructure (PKI): a pair of cryptographic keys (a private key known only to the signer and a public key available to others) and a digital certificate issued by a trusted certificate authority. When a document is signed, a cryptographic hash of the document is encrypted with the signer's private key, producing the signature. Recipients can verify the signature with the signer's public key and the certificate, confirming who signed and that the document has not been altered.

Most jurisdictions regulate e-imza under electronic signature laws; in Turkey, the framework recognizes and governs electronic signatures through relevant legislation and certification authorities, enabling e-imza to carry legal effect for contracts, official communications, and government services. There are variants such as advanced electronic signatures and, in some contexts, qualified electronic signatures that meet higher standards of assurance and may be issued with secure hardware devices (tokens, smart cards) and time-stamps.

Security best practices emphasize protecting the private key, using secure storage, and maintaining revocation information to handle lost or compromised keys. E-imza is widely used for online banking, e-government portals, business agreements, and other digital transactions, supporting faster, paperless processes while preserving authenticity and integrity.