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· Criptosistema de un solo uso
Bloc
utilizado como serie cifrante que contiene caracteres o números aleatorios.
Se producen sólo dos blocs, original y
copia, con destino a cada extremo de un criptosistema. Cada hoja del bloc se
usa una sola vez, destruyéndose a continuación. [Ribagorda:1997]
Procedimiento
de cifrado manual presentado en forma de bloc y diseñado de manera que cada
hoja, conteniendo caracteres aleatorios que sirven de clave para un mensaje, es
destruida después de usada. [CESID:1997]
Manual one-time
cryptosystem produced in pad form. [CNSSI_4009:2010]
1. (N) A manual
encryption system in the form of a paper pad for one-time use.
2. (I) An
encryption algorithm in which the key is a random sequence of symbols and each
symbol is used for encryption only one time -- i.e., used to encrypt only one
plaintext symbol and thus produce only one ciphertext symbol -- and a copy of
the key is used similarly for decryption.
[RFC4949:2007]
In cryptography,
the one-time pad is an encryption algorithm with text combined with a random
key or "pad" that is as long as the plain-text and used only once.
Additionally, if key is truly random, never reused, and, kept secret, the
one-time pad is unbreakable.
https://www.pcisecuritystandards.org/security_standards/glossary.php
A secret-key
cipher in which the key is a truly random sequence of bits that is as long as
the message itself, and encryption is performed by XORing the message with the
key. This is
theoretically unbreakable.
http://www.rsasecurity.com/rsalabs/faq
In cryptography,
a one-time pad is a system in which a private key generated randomly is used
only once to encrypt a message that is then decrypted by the receiver using a
matching one-time pad and key. Messages encrypted with keys based on randomness
have the advantage that there is theoretically no way to "break the
code" by analyzing a succession of messages. Each encryption is unique and
bears no relation to the next encryption so that some pattern can be detected.
With a one-time pad, however, the decrypting party must have access to the same
key used to encrypt the message and this raises the problem of how to get the
key to the decrypting party safely or how to keep both keys secure. One-time
pads have sometimes been used when the both parties started out at the same
physical location and then separated, each with knowledge of the keys in the
one-time pad. The key used in a one-time pad is called a secret key because if
it is revealed, the messages encrypted with it can easily be deciphered.
One-time pads figured prominently in secret message transmission and espionage
before and during World War II and in the Cold War era. On the Internet, the
difficulty of securely controlling secret keys led to the invention of public
key cryptography.
http://searchsoftwarequality.techtarget.com/glossary/
En cryptographie, le
pad ponctuel est un algorithme de cryptage avec un texte combiné à une clé
aléatoire ou «pad»,aussi longue que le texte clair et utilisée une seule fois.
En outre, si la clé est réellement aléatoire, jamais réutilisée et tenue
secrète, le pad unique est inviolable.
http://fr.pcisecuritystandards.org/
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