My first Beaufort
Introduction
This is a repeating-key Beaufort cipher. First estimate the period with Repeated sequences: record several repeat spacings and test a divisor shared by more than one. Split the Ciphertext into Periodic columns at that period. In each column, make a likely plaintext-letter guess from frequency or a strong crib. Number A as 0 through Z as 25; for Beaufort, add the guessed plaintext value to its ciphertext value modulo 26 to obtain that position's candidate Key letter. Assemble the column letters into a Key, enter it in Beaufort transform, choose Decrypt, and Run. Revise weak column guesses until the complete Result is coherent, then submit it.
Find recurring Latin-letter groups and their gaps.
CXNpositions 28, 311, 438, 793gaps 283, 127, 355PNQpositions 207, 225, 462, 817gaps 18, 237, 355AUYpositions 9, 104, 319gaps 95, 215CEEpositions 251, 326, 773gaps 75, 447CWDpositions 43, 588, 718gaps 545, 130ELApositions 18, 247, 605gaps 229, 358HKApositions 392, 512, 842gaps 120, 330JVPpositions 36, 231, 831gaps 195, 600MUEpositions 1, 16, 751gaps 15, 735NQEpositions 208, 463, 818gaps 255, 355NRCpositions 26, 101, 528gaps 75, 427NRNpositions 362, 431, 472gaps 69, 41Mue gdxr iauy Hrexmuel,
anwrsqnr cxn oeqwejvp
nngicwde: mnlk geclnaq
ikfqeeao mrhs snrh, pgrailnup
roxrxd Unt wnrxz gnpknrcauy
whbxgu cinepx mju. Poa zrwr
nnpagndpik qcnrvljdv
bronrkwnz hhlk oaeapyahrz, zu
sq edp vpcgk vr dafnrrak
Awlnvèea zxhcnrppnqe.
Aegaryes-mnborrpn qgepjvpm
prv dklledl yke Lat ceewdo, hbl
pdvqwaf i gaajus ijyb dawnrvt
antreyz iib ynqc wyz fnjjzuem.
Zcxnl yke cauy aild ceewdoat
cdgojrz qetexze hrn Hex
tnyprn ldnrnez evck pukkfe. Ai
e pdxbse, r teqqrhka cginrynlc
tnyprn ref nlz pagxnaprhy
cielenr nscgk cxn Hex jrgor dt
fuskgrr vbojpnqe. Aiiu
znnrnrg gvrojfvlnz moae ybr
cdgojr jz qoqay. Idmnfhka yke
teeoaseynq nr cdqnljdvvt
dafrn ref cazy poa vkuka
fnqdeln mnlk ybr Dnroqqay
ghrwnvcwde. Eendaq eapxrewel
ai qen ghtxfv bmxrxkg
joeiljmk hrn qis Unt xrlynr.
Zarh eawonvta nweegvkeea
zxcpazyq v iadvp pnaahb. R
aetqwnrrb Hnk iano vhl mdrj e
ojgcwdeieg vdrs. Zjeiktt,
oadljecbwzk Hrexmuel mauj
Jraavry Qevkmdrc eeo Nnyneèrr
dt yedljec cxn rxpaqai vcadqd
srek gqzjpnqez, vhl qt zbbljvp
qen rreorhka maipsnep.
Latin letters · 7 phases
| Phase | n | IC |
|---|---|---|
| 1 | 122 | 0.0477 |
| 2 | 122 | 0.0503 |
| 3 | 122 | 0.0467 |
| 4 | 122 | 0.0526 |
| 5 | 122 | 0.0420 |
| 6 | 121 | 0.0591 |
| 7 | 121 | 0.0456 |
Apply reciprocal Beaufort with a Solver-supplied keyword.
A Beaufort keyword must contain one or more Latin letters only.