A shorter, redundant version of a message, made by applying a message digest algorithm (such as SHA-1) to a message. Each message digest is unique to the message encrypted; any changes to the message result in completely different message digests. A signed (and consequently) verified message digest lets Bob know that the message he has received from Alice has not been altered during transmission of the message. _____________________________________________________________________________
See cryptographic checksum.
a concise representation of the message used to create the digest
a condensed representation of the information to be signed
a condensed text string distilled from the contents of a text message
a digitally created hash (fingerprint) created from a plaintext block
a fixed-sized output, digest, from an arbitrary-sized input, typically a digital file containing some important data
a function that takes an arbitrary length message and outputs a fixed-length string that is characteristic of the message
a function that takes arbitrary-sized input data (referred to as a message ) and generates a fixed-size output, called a digest (or hash)
a hash value that is computed from a message
a method of creating a fixed-length representation of an arbitrary message that uniquely identifies it
a product of a one-way function which is a unique identifier of a file
a short, fixed-length digital code derived in a one-way fashion from a longer variable-length message
a short representation of the message
a unique and reliable hash of the message that lets the receiver know that the message received is the exact same message that was sent
a value, also known as cryptographic checksum or secure hash, that is computed over a sequence of bytes
a value generated for a message or document that is unique to that message, and is sometimes referred to as a "fingerprint" of that message or data
The output string from a hash function. See also Hash Value.
The output of a hash function.
The hash of a message. See also Hash
The basis for Digital Signatures in providing a digest of the random message being transmitted. As a result, they are difficult to reverse.
AKA thumbprint or hash Distillation of the information contained in a file [or message] into a single large number, typically between 128 and 256 bits in length. If any part of the file is changed, it should be computationally unfeasible to find another file with the same message digest value. Also called one-way hash functions because they produce values that are difficult to invert, resistant to attack, effectively unique, and widely distributed. See also hash.
A function that outputs a fixed-length string from input of arbitrary length. Synonym: hash function.
A message digest, also sometimes called a digital fingerprint, is a number which is calculated from all the information in a message through the use of a hash function, and which can be used to verify the data integrity of the message. Any change to the message, even of a single bit, typically results in a dramatically different message digest. A message digest algorithm is considered ‘secureâ€(tm) if it is not computationally feasible to determine the content of a message from its message digest, nor to find ‘collisionsâ€(tm), wherein two different messages have the same message digest.
A hash of a message, which can be used to verify that the contents of the message have not been altered in transit. See: SSL/TLS Encryption
(MD-2, MD-4, MD-5) Message digests are algorithmic operations, generally performed on text, which produce a unique signature for that text. MD-2, described in RFC 1319; MD-4, described in RFC 1320; and MD-5, described in RFC 1321 all produce a 128-bit signature. They differ in their operating speed and resistance to crypto-analytic attack. Generally, one must be traded off for the other. See PGP, DES, RSA.
A compact "distillate" of a message of file checksum. It represents the message such that if the message were altered in any way, a different message digest would be computed from it.
A redundant short proxy for a usually much larger message to identify if the message was modified during transmission. Message digest methods super compress messages so encryption and decryption operate on less data and, therefore, take less time. Also known as cryptographic hash; cryptographic checksum; digital or message fingerprint.
A mathematical function used in encryption to distill the information contained in a file into a single large number, typically between 128 and 256 bits in length. Message digests are also known as one-way hash functions because they produce results where it is mathematically infeasible to try to calculate the original message by computing backwards from the result. Message digest functions are designed so that a change to a single character in the message will cause the message to result in a very different message digest number. Many different message digest functions have been proposed and are now in use; most are considered highly resistant to attack.
A message that has been condensed into a string of letters and numbers using a one-way hash function. Used for authentication of the contents of a message or to produce a digital signature.
The result of applying a hash function to a message.
A number that is derived from a message. If you change a character in the message, it will then have a different message digest.
