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WikiCards · Card list · Arts cards · SHA-2
Rare card · Arts
SHA-2, a Rare card
SHA-2 is a set of cryptographic hash functions designed by the United States National Security Agency and first published in 2001.
- Rarity
- Rare
- Domain
- Arts
- ATK
- 77
- DEF
- 66
- Power
- 143
- Wikipedia reads a year
- 260,000
Power 143 (ATK + DEF): stronger than 75 % of WikiCards cards.
SHA-2 quiz: 3 questions
Three questions on the SHA-2 card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Find the missing word
SHA-2 includes significant changes from its ______, SHA-1.
Answer
predecessor. SHA-2 includes significant changes from its predecessor, SHA-1. From the SHA-2 article on Wikipedia.
In which decade?
SHA-2 is a set of cryptographic hash functions designed by the United States National Security Agency and first published in ____.
Answer
2000s. SHA-2 is a set of cryptographic hash functions designed by the United States National Security Agency and first published in 2001. From the SHA-2 article on Wikipedia.
Which of these cards hits hardest (highest ATK)?
Answer
Anansi. Anansi 85 · Neoclassical architecture 82 · SHA-2 77 · Chiron 73 ATK in WikiCards.
In a duel, each round asks a question like these about the opposing card, with 15 seconds to answer.
The facts on the card
The card carries these facts from its Wikipedia article.
- They are built using the Merkle–Damgård construction, from a one-way compression function itself built using the Davies–Meyer structure from a specialized block cipher.
- SHA-2 includes significant changes from its predecessor, SHA-1.
- The SHA-2 family consists of six hash functions with digests that are 224, 256, 384 or 512 bits: SHA-224, SHA-256, SHA-384, SHA-512, SHA-512/224, SHA-512/256.
Why it is Rare
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The SHA-2 article was read about 260,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 77 and blocks with 66: each hit it takes is cut by 26 %.
How to get SHA-2
Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.
More Arts cards
Cards close in power
The cards just above and just below SHA-2 in the power ranking, all domains together.
- 2013–14 UEFA Champions LeagueRare · Society · ATK 76 DEF 67
- ChironRare · Arts · ATK 73 DEF 70
- JuniperRare · Nature · ATK 73 DEF 70
- African buffaloRare · Nature · ATK 78 DEF 69
- Niccolò PaganiniRare · Arts · ATK 73 DEF 70
- OuagadougouRare · Society · ATK 72 DEF 71
Card lists
- Wikipedia quizNew questions every day
- All cards from A to ZEvery card, by name
- Arts cards
- Legendary cards
- Tier listS and A tiers by power (ATK + DEF)
Credits
Text : Wikipedia, SHA-2 (revision), CC BY-SA 4.0. Photo : kockmeyer, CC BY-SA 3.0, Wikimedia Commons.
