ciphertext = "Zvqbprna Havirefvgl nfcverf gb npuvrir rkpryyrapr va bayvar uvture rqhpngvba naq shysvyy fhfgnvanoyr qrirybczrag tbnyf gb raunapr dhnyvgl bs yvsr. Vg nvzf gb ohvyq n trarengvba bs yrnqref pncnoyr bs pbagevohgvat gb pbzzhavgl qrirybczrag guebhtu n havdhr rqhpngvbany zbqry gung yrirentrf gur yngrfg r-yrneavat grpuabybtvrf gb qvffrzvangr xabjyrqtr naq sbfgre vaabingvba va znantrzrag, vasbezngvba grpuabybtl, zrqvn, naq uhznavgvrf."


shift = 13


def caesar_decrypt(ciphertext, shift):
    plaintext = ""
    for char in ciphertext:
        if char.isalpha():
            
            if char.isupper():
                plaintext += chr((ord(char) - 65 - shift) % 26 + 65)
            else:
                plaintext += chr((ord(char) - 97 - shift) % 26 + 97)
        else:
            plaintext += char
    return plaintext


decrypted_text = caesar_decrypt(ciphertext, shift)
print(decrypted_text)




النص المشفر:

"Midocean University aspires to achieve excellence in online higher education and fulfill sustainable development goals to enhance quality of life. It aims to build a generation of leaders capable of contributing to community development through a unique educational model that leverages the latest e-learning technologies to disseminate knowledge and foster innovation in management, information technology, media, and humanities."