Use "cryptograph" in a sentence
cryptograph example sentences
cryptograph
1. A rainbow table is a precomputed table for reversing cryptographic hash functions, usu-
2. 1Random numbers are used in both symmetric and asymmetric cryptography as a way of generating keys and for the random values used in the operation of some algorithms
3. cryptographers in the U
4. cryptography, which is all about how to protect
5. My specialty is cryptography and we devote considerable time to researching patterns of communication
6. He even has a brilliant plan to launch a new company, using his skills in cryptography and his business acumen
7. Churchill had then secretly ordered that the best British cryptographers break the password put by Nancy on her hidden computer files
8. And there is one further major development that we have been working on, with the Americans at the Los Alamos National Laboratory in New Mexico, and that is quantum cryptography, using satellites for transmission over long distances
9. If they entirely eliminate cash, then every monetary transaction becomes automatically cryptographed and is potentially traceable
10. The cryptography wasn"t the problem; it was the shear number of messages that his computer
11. such great interest over the centuries is also a very unique and ancient form of cryptography
12. symbology and cryptography, I applied my 20-plus years of computer programming and research
13. The use of a PKI makes it possible to transmit authentication data across a Windows network with greater security than clear-text authentication mechanisms like that of FTP or even other secret key cryptography mechanisms
14. Using a cryptographic trick known as secret sharing, a Bitcoin private key can be divided into many fragments, and only a certain number are required to reconstruct the key
15. Several different cryptographic protocols are used for secret sharing, but the most popular is Shamir’s Secret Sharing method, for which organizations can easily find open source implementations on the Web
16. We should note in advance that this storage method is impractical in several respects and recommended only for Bitcoin/cryptography experts
17. Someday we might look back and think it should have been obvious that a decentralized currency that is impossible to counterfeit and is built on cryptographic principles is more secure than traditional currencies
18. Here is the signature, created with the fancy-pants cryptography we’ve been discussing:
19. Chaum studied problems in cryptography while completing his PhD at the University of California, Berkeley, and was particularly interested in ways people could transfer money digitally and anonymously
20. Written under the pseudonym Satoshi Nakamoto and distributed on a cryptography mailing list in October 2008, a paper titled “Bitcoin: A peer-to-peer electronic cash system” was the first public mention of Bitcoin
21. Many cryptographers and programmers began to participate in Bitcoin’s development, including notable computer scientists like Hal Finney, who were longtime contributors to digital currency research (among other topics)
22. Recently, two well-known cryptocurrency developers and entrepreneurs, Adam Back and Austin Hill, have suggested that the value of new cryptocurrencies could be directly linked one-to-one with the value of a bitcoin by using cryptography to allow coins to “ jump” between block-chains using clever algorithms
23. Every armored van, security officer, and bank vault that is used to protect traditional currency uses resources, and if we moved to a currency that leverages modern cryptography for security, many of these traditional security mechanisms that physically deter thieves from accessing this money may in theory no longer be necessary
24. Bitcoin relies on cryptography to function, which is why it is sometimes called a cryptocurrency
25. 1 But what role does cryptography play in Bitcoin, and why is it needed? We’ll begin with a short introduction to some necessary cryptography concepts (if they are familiar to you, you can just skip to “The Reasons Bitcoin Needs Cryptography” on page 137), and then we’ll explore the specific cryptographic methods used in Bitcoin
26. If you flipped to this chapter only because you wanted to know whether the cryptography used by Bitcoin is safe, you can rest easy knowing that Bitcoin uses only tried-and-tested cryptographic techniques: All of the cryptographic methods used by Bitcoin have been widely used in the past by governments and major corporations to secure financial, medical, and other sensitive information, as well as personal identification data
27. In fact, the cryptography in Bitcoin could be described as boring, simply because it relies on very conservative cryptographic algorithms
28. But in some fields of study, such as accounting and dentistry, boring is good; in the case of Bitcoin, conservative and well-established cryptography helps make it more secure
29. The interesting part is what Bitcoin does with cryptography
30. Historically, cryptography was used to send secret messages when necessary to protect information
31. With the advent of computers, which could do in milliseconds what used to take hours manually, cryptography is now used routinely by the masses to encrypt/decrypt very important (e
32. Perhaps surprisingly, the convenience and speed of computers has led to the adoption of cryptographic methods for more than just encrypting secret messages
33. Both use cryptographic methods, but no message encryption is involved in either case
34. In addition to encrypting messages, modern cryptography is used to verify the validity of information (through cryptographic hash functions) and to prove one’s identity (through digital signatures)
35. For example, without modern cryptography, you wouldn’t be able to distinguish between two identical websites that both claimed to belong to your bank
36. Before we explain how digital signatures and cryptographic hash functions work, let’s explore one-way functions, a feature that both rely on
37. Another one-way function, which is a bit more complicated but is commonly used in cryptography, involves the discrete logarithm
38. In the early days of computers, people started applying the asymmetry in these one-way functions to build various classes of cryptographic algorithms, which is what we’ll discuss next
39. Cryptographic hash functions are one-way functions designed to take arbitrary data as input (e
40. Another, more exciting, use of cryptographic hash functions is proving that you know a secret password without giving it away
41. More important, even the slightest alteration to the unencrypted message would cause the cryptographic hash to be completely different, thus preventing any interceptor from modifying the signed message
42. Calculate the hash of the message using a suitable cryptographic hash function (e
43. Let’s explore the functions of Bitcoin that require cryptography and then delve into the specific methods that Bitcoin uses
44. The one-way function used in Bitcoin mining is a cryptographic hash function
45. Miners are given the output criteria (the output can be any number less than some threshold), but by design, cryptographic hash functions make it difficult to reverse calculate what the corresponding input needs to be
46. Public key cryptography is a high-level framework that can be implemented many different ways
47. But how are digital signatures implemented in Bitcoin? Many different cryptographic hash functions exist, and although the MD5 method mentioned earlier is widely used, it is not sufficiently secure for a cryptocurrency (collisions have been detected in MD5, resulting in two different inputs leading to the same output)
48. SHA256 and RIPEMD160 are the two cryptographic hash functions used in the Bitcoin protocol
49. Both SHA256 and RIPEMD160 are widely used, but the SHA methods are more popular and have undergone a higher degree of scrutiny from cryptographers
50. At the time of this writing, nobody has detected a collision in either SHA256 or RIPEMD160, which is an important measure of the security of a cryptographic hash function
