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/