| i | insére du texte à la gauche du curseur (entrée en mode "insertion") |
| a | insére du texte à la droite du curseur |
| ESC | sort du mode "insertion" |
| x | efface le caractère sur lequel se trouve le curseur |
| dd | efface la ligne |
| :w | sauve le fichier |
| :q | quitte vi |
| u | undo la dernière commande |
[The MD5 alogirthm] takes as
input a message of arbitrary length and produces as output a 128-bit "fingerprint"
or "message digest" of the input. It is conjectured
that it is computationally infeasible
to produce two messages having the same message digest, or to produce any
message having a given prespecified target
message digest. The MD5 algorithm
is intended for digital signature applications, where a large file must
be "compressed" in a secure manner before being
encrypted with a private (secret)
key under a public-key cryptosystem such as RSA.
In essence, MD5 is a way to verify data integrity, and is much more reliabe than checksum and many other commonly used methods.
co -p -r1.3 fastalgos.lyx > last.lyx