opkrypter

Opkrypter is a Danish term that can refer to a person, program, or device that decrypts encrypted information. In standard Danish, the act of reversing encryption is most commonly expressed with the verb dekryptere and the noun dekryptering. The form opkrypter appears in some texts as a noun meaning a decryptor — that is, someone or something that performs decryption — or as a verb form in contexts describing the reversal of encryption. Because it is less common than dekryptere, its precise meaning can depend on the sentence.

In computing and information security, a decryptor or opkrypter is typically software or hardware that reverses cryptographic transformation using the appropriate keying material and algorithms. Decryption can be essential for data recovery, forensics, and authorized access to protected information, as when a user or organization retrieves data from an encrypted archive or message with permission. Ethically and legally, decryption must respect privacy, property rights, and applicable laws; unauthorized decryption is illegal in many jurisdictions and may breach terms of service.

Equivalent English terms include decryptor, decrypter, decryption. Danish equivalents are dekryptere (to decrypt) and dekryptering (decryption). The usage of opkrypter is largely limited to certain technical or colloquial contexts; in formal writing, dekryptering is more standard.