Digital signature, an Uncommon card

The card carries these facts from its Wikipedia article.

• A valid digital signature on a message gives any recipient confidence that the message came from a sender known to the recipient.
• In contrast, a message authentication code only gives confidence to a specific recipient that the message came from a known sender.
• Digital signatures are a type of public-key cryptography, and are commonly used for software distribution, financial transactions, contract management software, and in other cases where it is important to detect forgery or tampering.

Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Digital signature article was read about 140,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 74 and blocks with 48: each hit it takes is cut by 19 %.

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.

The cards just above and just below Digital signature in the power ranking, all domains together.