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"# ---------------------------------------------------------------\n",
"# python best courses https://courses.tanpham.org/\n",
"# ---------------------------------------------------------------\n",
"# Write a Python program to create a Caesar encryption\n",
"\n",
"# Note : In cryptography, a Caesar cipher, also known as Caesar's cipher, the shift cipher, Caesar's code or Caesar shift, is one of the simplest and most widely known encryption techniques.\n",
"# It is a type of substitution cipher in which each letter in the plaintext is replaced by a letter some fixed number of positions down the alphabet.\n",
"# For example, with a left shift of 3, D would be replaced by A, E would become B, and so on.\n",
"# The method is named after Julius Caesar, who used it in his private correspondence.\n",
"\n",
"# plaintext: defend the east wall of the castle\n",
"# ciphertext: efgfoe uif fbtu xbmm pg uif dbtumf"
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