Plaintext

In cryptography, plaintext is information used as input to an encryption algorithm; the output is termed ciphertext. The plaintext could be, for example, a diplomatic message, a bank transaction, an e-mail, a diary and so forth — any information that someone might want to prevent others from reading. Typically the plaintext is the message in a form where no special effort has been made to make the information unreadable without special knowledge. In some systems, however, multiple layers of encryption are used, in which case the ciphertext output of one encryption algorithm becomes the plaintext input to the next.
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<cryptography> A message before encryption or after decryption, i.e. in its usual form which anyone can read, as opposed to its encrypted form ("ciphertext").
(1995-05-10)

plaintext
danh từ hình thức có thể hiểu được của một văn bản được mã hoá
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