There is another statement written by Shadow brokers concerning the auction of those tools.
We auction best files to highest bidder. Auction files better than stuxnet. Auction files better than free files we already give you. The party which sends most bitcoins to address: 19BY2XCgbDe6WtTVbTyzM9eR3LYr6VitWK before bidding stops is winner, we tell how to decrypt. Very important!!! When you send bitcoin you add additional output to transaction. You add OP_Return output. In Op_Return output you put your (bidder) contact info. We suggest use bitmessage or I2P-bote email address. No other information will be disclosed by us publicly. Do not believe unsigned messages. We will contact winner with decryption instructions. Winner can do with files as they please, we not release files to public.
Linked from <https://en.wikipedia.org/wiki/The_Shadow_Brokers>
In this statement, there is an expression of “decryption instructions”, which is originally created by the Japanese sentence meaning “We will tell you a way of the decryption”. This word “decryption” is a noun in Japanese as well, but easily converted to a verb as it is. If they are not familiar with the word “decryption”, they should mention rather “decrypting instruction”. This “decryption” possesses a meaning of the present participle in this statement, implying it is used as a verb in their communication frequently.
The bottom line is “decryption” is used as a noun and verb in Japanese, or “decrypt” and “decrypting” is not used in Japanese language system, once “decryption” got a dominance, as it can be used as a noun and verb.
The word of “decryption” is often used by engineers of encrypted communication. The decryption key is a necessary component to read an encrypted message. Although, there are other types of people who are familiar with this word, which are criminals committing a ransomware. They hack the corporate server, which is encrypted not to be read. Then, they ask the management to pay a ransom to get a decryption code.
In this occasion, the word “decryption” is used in Japanese well, saying “We will tell you a way of decryption, once the payment is confirmed”. That is why they used “decryption instructions”, indicating they are Japanese criminals of the ransomware.