972未解歷史密碼
中文譯本 · 原作 Daniel Bourdeau《Unsolved Historical Ciphers》 以 CC BY 4.0 釋出，本頁由 JIC 翻譯，非原作者官方版本，譯文如有出入以英文原頁為準 · 檢視英文原頁 ↗
1753 → 3571 · 1753 → 7531 · 1753 → 3175 · 1753 → 21753, 17536
“by taking ye Figures of every Cypher backwards …”

海牙 → Jones 先生 · 關於編制密碼的明文信件 · 1753年1月16日

Schaeblin 致 Jones 先生，海牙，1753年，談一部新的法文密碼

British Library，Add MS 32256 f. 235（DECODE R9218），編目為 Jones 先生致 Ben. Schaeblin 的兩頁數字名碼本信件，未解讀。這兩頁其實是英文明文，而且信的方向正好相反：是 Schaeblin 寫信給 Jones，談他正在編制的新法文密碼。這裡沒有什麼需要解密的；信件已全文轉錄。

Daniel Bourdeau · 釋出於 · 更新於

方法：並非密碼

摘要。DECODE 把 R9218 列為一封加密信件，“Mr. Jones (Hague) to Ben. Schaeblin”，1753年，數字名碼本，無解讀。影象上看不到任何密文。這是一封清晰的英文信，1753年1月16日寫於海牙，署名“C. Ben. Schaeblin”，收信人為“To Mr Jones”，所以 DECODE 把發信人和收信人弄反了。Schaeblin 正在仿照“the English Cypher”為英國方面編制一部新的法文密碼：3000個數字外加空位，歐洲各宮廷的現任大臣，以及歐洲人在亞洲、非洲和美洲的殖民據點。他提議不借助第二部密碼來加以偽裝，辦法是把每個數字倒過來寫、輪換其數位，或者加一個虛設數位，每次切換都用一個“Change the Cypher”碼組來標示。頁面上僅有的數字是他以1753為例演示的算例。整封信都已轉錄；那部法文密碼本身沒有去查詢。

01 文獻

f. 235r 下半部分：幾種偽裝方法，1753寫作3571和7531
f. 235r，頁尾：“by taking ye Figures of every Cypher backwards, E.G. 1753. write 3571 … by putting ye first figure at ye End, E.G. 1753. write 7531.” 影象：British Library，Add MS 32256 f. 235r，經由 DECODE R9218。

一葉，兩面書寫，字跡清晰，日期為“Hague Janry 16. 1753”，署名“C. Ben. Schaeblin”，背面頁尾有“To Mr Jones.”。Add MS 32256 屬於紐卡斯爾檔案（Newcastle Papers）中1753年的外交通訊。DECODE 的標籤“nomenclator; numerical”描述的是這封信所談論的那部密碼。

02 文字

保留縮寫（yr = your，ye = the，wch = which）。

Sr. — I have yr Honr of sending you inclosed a List of Names of most of the Ministers actually employed by the several Courts of Europe, in publick Affairs, which I intended to insert into the new French Cypher, and beg you will send it me back with the Additions or omissions that may be thought proper; I have added a List of names, that though in the English Cypher are either dead or no more in a publick Capacity, & in regard to wch I beg to be instructed. I did not think it necessary to send you also a List of the Places, Countries &c. I kept all those that are found in the English Cypher, & added many more, particularly ye names of most of the European Settlements in Asia, Africa, & America, as those places will chiefly be ye Subject of French Papers that may be wanted to be put into Cypher. As for ye rest, I shall make it in ye same manner as ye English, with ye same number of Cyphers, viz. 3000. and bring likewise in several Blanks.

In Order to disguise it sometimes, without ye help of a Second Cypher, I propose several Methods, for Instance, by taking ye Figures of every Cypher backwards, E.G. 1753. write 3571. and vice versâ in decyphering it; Item, by putting ye first figure at ye End, E.G. 1753. write 7531. Item by putting ye last figure at ye head, as 1753 write 3175. & both vice versâ in decyphering. Item by adding any indifferent figure at ye head or end of each Cypher, wch is then only to be taken off in decyphering, E.G. 1753. write 21753, or 17536. Each of these Methods might be marked where it begins, by two or three Cyphers like the Change the Cypher in the last English Cyphers; & some other marks, where it changes again into the natural way. To avoid Confusion, I wd add a Note that these different Methods are not to be minded, or to follow one another immediately, without Changing before into ye natural way.

I beg ye favour you will let me know, wch of these several Methods I may make use of, & as soon as I am honoured with yr Answer, I shall only want a week’s Time to put it entirely in order, & transmit a fair Copy of it. I shall do my Utmost Endeavours to make it as compleat as possible, & flatter myself to succeed as far as can be expected. — I have ye Honour &c. C. Ben. Schaeblin. To Mr Jones.

03 尚存疑問

04 來源

筆記與轉錄：程式碼庫中的 targets/jones1753/。