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Export-restricted RSA encryption source code printed on a T-shirt made the T-shirt an export-restricted munition, as a freedom of speech protest against U.S. encryption export restrictions . [1] Changes in the export law means that it is no longer illegal to export this T-shirt from the U.S., or for U.S. citizens to show it to foreigners.
DeCSS. A fragment of the DeCSS code, which can be used by a computer to circumvent a DVD's copy protection. DeCSS is one of the first free computer programs capable of decrypting content on a commercially produced DVD video disc. Before the release of DeCSS, free and open source operating systems (such as BSD and Linux) could not play encrypted ...
XOR cipher. In cryptography, the simple XOR cipher is a type of additive cipher, [ 1] an encryption algorithm that operates according to the principles: A 0 = A, A A = 0, A B = B A, (A B) C = A (B C), (B A) A = B 0 = B, For example where denotes the exclusive disjunction (XOR) operation. [ 2] This operation is sometimes called modulus 2 ...
Comparison of implementations of message authentication code (MAC) algorithms. A MAC is a short piece of information used to authenticate a message—in other words, to confirm that the message came from the stated sender (its authenticity) and has not been changed in transit (its integrity). Implementation. HMAC - MD5. HMAC- SHA1.
Jefferson disk. A disk cipher device of the Jefferson type from the 2nd quarter of the 19th century in the National Cryptologic Museum. The Jefferson disk, also called the Bazeries cylinder or wheel cypher, [ 1] was a cipher system commonly attributed to Thomas Jefferson that uses a set of wheels or disks, each with letters of the alphabet ...
VeraCrypt. VeraCrypt is a free and open-source utility for on-the-fly encryption (OTFE). [ 5] The software can create a virtual encrypted disk that works just like a regular disk but within a file. It can also encrypt a partition [ 6] or (in Windows) the entire storage device with pre-boot authentication.
The bcrypt function uses these inputs to compute a 24-byte (192-bit) hash. The final output of the bcrypt function is a string of the form: $2<a/b/x/y>$ [cost]$ [22 character salt] [31 character hash] For example, with input password abc123xyz, cost 12, and a random salt, the output of bcrypt is the string.
The EFF's DES cracker "Deep Crack" custom microchip. In cryptography, the EFF DES cracker (nicknamed " Deep Crack ") is a machine built by the Electronic Frontier Foundation (EFF) in 1998, to perform a brute force search of the Data Encryption Standard (DES) cipher's key space – that is, to decrypt an encrypted message by trying every ...