Digital fingerprint may refer to:
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Message digest
A cryptographic hash function (CHF) is a hash algorithm (a map of an arbitrary binary string to a binary string with fixed size of n bits) that has special properties desirable for cryptography:
* the probability of a particular n-bit output ...
, the output of a one-way function when applied to a stream of data
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Public key fingerprint
In public-key cryptography, a public key fingerprint is a short sequence of bytes used to identify a longer public key. Fingerprints are created by applying a cryptographic hash function to a public key. Since fingerprints are shorter than the k ...
, short sequence of bytes used to identify a longer public key
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Fingerprint (computing)
In computer science, a fingerprinting algorithm is a procedure that maps an arbitrarily large data item (such as a computer file) to a much shorter bit string, its fingerprint, that uniquely identifies the original data for all practical purpos ...
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Acoustic fingerprint
An acoustic fingerprint is a condensed digital summary, a fingerprint, deterministically generated from an audio signal, that can be used to identify an audio sample or quickly locate similar items in an audio database.
Practical uses of aco ...
, a condensed digital summary generated from an audio signal
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Device fingerprint
A device fingerprint or machine fingerprint is information collected about the software and hardware of a remote computing device for the purpose of identification. The information is usually assimilated into a brief identifier using a fingerprinti ...
, a compact summary of software and hardware settings collected from a remote device, for example a computer or a web browser
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Digital video fingerprinting
Video fingerprinting or video hashing are a class of dimension reduction techniques in which a system identifies, extracts, and then summarizes characteristic components of a video as a unique or a set of multiple perceptual hashes, enabling tha ...
, a technique to summarize characteristic components of a video recording
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TCP/IP stack fingerprinting
TCP/IP stack fingerprinting is the remote detection of the characteristics of a TCP/IP stack implementation. The combination of parameters may then be used to infer the remote machine's operating system (aka, OS fingerprinting), or incorporated ...
, the remote detection of the characteristics of a TCP/IP stack
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Content ID (algorithm)
Content ID is a digital Fingerprint (computing), fingerprinting system developed by Google which is used to easily identify and manage copyrighted content on YouTube. Videos uploaded to YouTube are similarity measure, compared against audio and v ...
, a Google technology used on YouTube to identify content protected by copyright
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