The one-time pad is a simple cipher. It ensures a perfect form of confidentiality known as perfect secrecy by combining a plaintext and a key of the same length with the exclusive-or (XOR) operator to produce a ciphertext. It is interesting from a theoretical point of view, but it could be more complex and questionable to use in practice. One-time pad is very appealing because of its perfect secrecy property. However, it lacks basic security properties shared by standard ciphers, namely authentication and integrity. In practice, its usage is rare and limited to circumstances where perfect secrecy is of utmost importance and integrity and authenticity can be guaranteed by other means.
CITATION STYLE
Lugrin, T. (2023). One-time pad. In Trends in Data Protection and Encryption Technologies (pp. 3–6). Springer Nature. https://doi.org/10.1007/978-3-031-33386-6_1
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