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A40781 Cryptomenysis patefacta, or, The art of secret information disclosed without a key containing, plain and demonstrative rules, for decyphering all manner of secret writing with exact methods, for resolving secret intimations by signs or gestures, or in speech : as also an inquiry into the secret ways of conveying written messages, and the several mysterious proposals for secret information, mentioned by Trithemius, &c. / by J. F. J. F. (John Falconer) 1685 (1685) Wing F296; ESTC R6319 86,972 206

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Ease Whether Speech or that dumb kind of Eloquence by Signs be first Ordine Naturae is under Debate and let it remain so But without Controversie for a methodical comprehending the whole Rules of Discovery 't is most proper to begin with Cryptography being the Resolution of the rest of the Chapters in a manner depend upon this Cryptomenysis Patefacta OR THE Art of Secret Information disclosed without a Key CHAP. I. Of Secret Writing and the Resolution thereof IN Secret Writing there are reckoned these Requisites Requisites in Cryptography c. 1. That it be void of Suspicion if possible 2. That it be difficult to be unfolded if doubted 3. That it be fitted for Dispatch i.e. easie to be writ and Decyphered by the Key From whence I shall here only observe Note That every thing is to be Examined that comes from a suspected Hand The particular ways of Tryal will appear as we proceed This Art is by some Authors call'd Crytographia 〈◊〉 〈◊〉 〈◊〉 〈◊〉 〈◊〉 to hide or keep secret Etymolog of Cryptog c. and 〈◊〉 〈◊〉 〈◊〉 〈◊〉 〈◊〉 to write carve or grave By others Steganographia 〈◊〉 〈◊〉 〈◊〉 〈◊〉 〈◊〉 to conceal and 〈◊〉 〈◊〉 〈◊〉 〈◊〉 〈◊〉 Trithemius entitles the six Books he himself published upon this Subject Libri Polygraphiae from 〈◊〉 〈◊〉 〈◊〉 〈◊〉 〈◊〉 because of the numerous or rather innumerable Differences it is capable of And yet all will fall under the following Sections which I have digested after this Method 1. I shall examine that way of Secret Writing by Altering the Powers of the Letters as also by invented Notes and Characters 2. By changing the Places of the Letters where the Powers are the same 3. By using more Letters or Characters than are requisite to frame Words 4. I shall enquire into that Secresie which arises by writing with fewer Letters than the words require 5. I shall consider the Secresie in Writing that proceeds from a Deceit in the Paper or some other Material instead thereof And 6. That Fallacy where the Secret Intentions are concealed by a Deceit arising from the Ink or some other Liquor used for it SECT 1. Of Secret Writing by changing the Powers of Letters c. ¶ 1. Contains several Ancient and Modern Inventions of this kind THis way of Secret Writing by changing the Powers of Letters of purpose to confound the true Intent of a written Message was very early in the World Sec. and Swift Mes p. 69 70. and the Author of the Secret and Swift Messenger tells us much of the ancient Jewish Learning is wrapt up in it Suetonius relates See also Aul. Gell. noct Atti● l. 17. c. 9. That Julius Caesar writ his Epistles of Moment per quartam elementorum literam as that Author hath it in this Order D e f g h i k l m n o p q r s t u w x y z a b c. A b c d e f g h i k l m n o p q r s t u w x y z. D being put for A and E for B c. E g. Xlh Hqhpb mw mq kvhdx gmwrvghv idoo ysrq xlhp zmxl doo hashgmxmrq The Enemy is in great Disorder fall upon them with all Expedition Augustus Caesar in communicating his secret Intentions secundum elementum proprii loco substituit i.e. He put B for A for B he put C c. and for A he used XX. thus X X a b c d e f g h i k l m n o p q r s t u w x y. A b c d e f g h i k l m n o p q r s t u w x y z. This Transposition will appear fully as much a Stranger to the true meaning in an Epistle as any notwithstanding of the near Neighbourhood of the Letters that are express'd and understood It is ordinary in Secret Writing of this nature to make use of some word wherein one Letter is only once express'd to frame their Alphabet by writing first the Word it self and after it the Letters wanting to compleat the Alphabet and that either by two Lines at length or by the Alphabet divided E. g. Let Liberty be for the Key In two full Lines L i b e r t y a c d f g h k m n o p q s u w x z. a b c d e f g h i k l m n o p q r s t u w x y z. By the Alphabet divided L i b e r t y a c d f g h k m n o p q s v w x z. So that in Writing L is used for H and again H for L they use I for K and K for I c. I have seen Transpositions of the Letters so ordered in framing an Alphabet that the seeming barbarous words in the writing could be well enough pronounced in Speech and would at first view appear to be some strange kind of Language But why should I enlarge upon Particulars Trithemius his fifth Book contains nothing but Tables for Transpositions and tho he had employed the whole time of his Life that way he had left a vast variety untouched for let the Alphabet stand in its natural Order viz. a b c d e f g h c. for an Index to shew the Powers of the several possible Combinations of the twenty four Letters to be placed opposite to it in Rows and allowing five of these Rows to stand in an Inch measure One end of this Tabula transpositionis expansa when writ in a Scroul if reached to the Man in the Moon Nay to go farther if Mercury who once taught the use of Writing had it the other might remain with us And besides the Transpositions which must lie by the way thither abundance of different Alphabets left for the Use of this lower World upon Occasion To be serious according to the following Rules for combining any Number of Letters you will find twenty four Letters have 620448401733239439360000 several Positions And Schottus demonstrates Steganog Clas 5. c. 5. tho the Calculation in his Book be not exact that a thousand Million of Men in as many years could not write down all those different Transpositions of the Alphabet granting every one should compleat forty Pages a day and every Page contain forty several Positions For if one Writer in one day write forty Pages every one containing forty Combinations 40 multiplied by 40 gives 1600 the Number he compleats in one day which multiplied by 366 the Number and more of Days in a Year a Writer in one Year shall compass 585600 distinct Rows Therefore in a thousand million of years he could write 585600000000000 which being again multiplied by 1000000000 the number of Writers supposed the Product will be 585600000000000000000000 which wants of the number of Combinations no less than 34848401733239439360000. But those are not all for the Alphabet put for the Index is capable of 620448401733239439359999 Variations to each of the former Positions And besides many have