Christmas Challenge 2020 – Day 06 (Dec 23)

A 4×4 Hill Cipher, one layer

SKYJGOHWIPIRPGVJMFYVFCGXHWQTGYSEKTMILCDHGZYCABYOVALAIYIWIZCVFKKQLGOMCXTXLNLTHLTEJBUBMZEHDPIHFBQZKSHOVIRLBCRYJEHJYJRPACWSLFUNOBVXMDCMDTVCXJXFGXWALYBMSFERMJTNXTCVVJKWRHACIFOEDBTCHBXXCEAFYTKLYCPFGPUQGKQXXQLNDNDQCFWPXSVHHJQGAPARNCZZFZZHUWQFODLNBXCYXWGMJKDGCWZEXNZVBKJZLVGVBXGWBHBBIAPDABTBYJSSVHKDUEXYXFOVCLHZMPSABSKLWCFHXCDBVIKSFRJQBFKYJPSUBSKLYDGPHVZGRWTBTKWWMPFWTXYQDBYZAXETDRIQVWUANNVHKNMPHRFSNSGYBCSPFRJQLCNJTRYLJODMYQSNLLIVRATKSOBBSSWZGTPRPBQTRNYZBLPHHAWGEWGBKOKDYJKUJOWPBENAIFISRVSLWOJTHNVRIFEIPKYVZOXFSEYEPHFINZBHCTHTHQIWOTKESAEOJZKRPRNSBKTBCZNLRWBGXNZFBYNVEISFQZNIDVPLXNHGJNYVKCDJTTNLOGHYVXYWIGMEFWKUOSZUZJJLLPBESBJTSZIEXGTEMILWLFOKDBMQDXQUMWDUKDGNFQZFPYEAYUONHJVHVIRVYYSCEIOWVZHELPWQOPAAXDIXDHYTUQAXTTXNYJCJTMDSNWLFBQYYNCZZLQTJICHCFHIOHASKBELHFFJMWWEOTXSVHUBBXLLCZPQVELUIVNSZYCNWWQXAWEMOHHENFRIJRQHDARCHVPIXMRUXVYQMQLWQFZZHVHTENKFFCDCKLFVQEKHMHTWORHXVUAMCEPTDPDNTDJMNLMPQFZZHVHTENKFFBXLNSTHRUXWQZJSODLGYUFEVBAKOAUBIIUHCPOCSWEKOETEZTMGLKMOLHRPBATHLWHUABEJSOZMHTKEKQZMHIJVJXSZRRURBLHGTIAZBDWZAXFLVRCEDLERABKAWRZKJCTHTPKGGRKNGOIKHPWWUIQSSXHPVVEXOZBXSNIDDBAYMZYCLLDUUMDGLAUVPTDLPDUYRWZSZQPIUHUGJWZSZFQZFNROZDZCNZJTKCUCWLGVCPDOHBETLSKYJZRVEZXYFEJBVYFBW


Day 6: 4×4 Hill cipher

Encryption Matrix:
20 8 9 19
9 19 14 15
20 20 8 5
5 14 4 1

(This is not the end)

Plaintext :
This battle was not fought for the sake of gaining positions or so many square miles of desert territory. General Alexander and General Montgomery fought it with one single idea. they meant to destroy the armed force of the enemy and to destroy it at the place where the disaster would be most far-reaching and irrecoverable….

Now this is not the end. It is not even the beginning of the end. but it is, perhaps, the end of the beginning. Henceforth Hitler’s Nazis will meet equally well armed, and perhaps better armed troops. Hence forth they will have to face in many theatres of war that superiority in the air which they have so often used without mercy against other, of which they boasted all round the world, and which they intended to use as an instrument for convincing all other peoples that all resistance to them was hopeless….

We mean to hold our own. I have not become the King’s First Minister in order to preside over the liquidation of the British Empire. For that task, if ever it were prescribed, someone else would have to be found, and, under democracy, I suppose the nation would have to be consulted. I am proud to be a member of that vast commonwealth and society of nations and communities gathered in and around the ancient British monarchy, without which the good cause might well have perished from the face of the earth. Here we are, and here we stand, a veritable rock of salvation in this drifting world….