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| English | Slovak |
| Challenge Handshake Authentication Protocol | protokol Challenge Handshake Authentication Protocol (A challenge-response authentication protocol for Point-to-Point Protocol (PPP) connections described in RFC 1994. It uses the industry-standard MD5 hashing algorithm to hash the combination of a challenge string issued by the authenticating server and the user's password in the response) |
| HIP challenge | test IRT (A challenge meant to be easily solved by humans, while remaining too hard to be economically solved by computers) |
| payment instrument challenge | kontrola spôsobu platby (A fraud prevention mechanism that attempts to verify that an individual using a payment instrument is authorized to use or is the owner of that instrument) |