This is an implementation of double-array structure for representing trie,
as proposed by Junichi Aoe [1].
Trie is a kind of digital search tree, an efficient indexing method with
O(1) time complexity for searching. Comparably as efficient as hashing,
trie also provides flexibility on incremental matching and key spelling
manipulation. This makes it ideal for lexical analyzers, as well as spelling
dictionaries.
See the details of the implementation at [2]:
http://linux.thai.net/~thep/datrie/datrie.html
Historically, this was first implemented as C++ classes in a library called
midatrie [2], but later simplified and rewritten from scratch in C.
This project demonstrates the use of secure hash functions technique
to implement a file encryption / decryption system.
This implemented application can encrypt / decrypt multiple files
on the fly using a password. The password supplied by the user
is used as the source message from which the hash code (key) is
generated using the SHA algorithm. Then this key is used to
enctypted the data in the file(s). This key is stored in the
encrypted file along with the encrypted data.
This project demonstrates the use of secure hash functions technique
to implement a file encryption / decryption system.
This implemented application can encrypt / decrypt multiple files
on the fly using a password. The password supplied by the user
is used as the source message from which the hash code (key) is
generated using the SHA algorithm. Then this key is used to
enctypted the data in the file(s). This key is stored in the
encrypted file along with the encrypted data.
XTHIDE is a GUI that allows the user to hide a text message in an image file.
The user will be asked for a key that will be used to both encode and decode the text into an image.
The key can be of length from 2 to 900 characters.
The encryption pattern for a key hell is not a subset of the encryption pattern for hello .
See help. Created with version 7.01.
This Program Cotains Eeprom Read-write functions, 4 Bit LCD interface routines, Keyboard Interface with normal Key Input to the 89C52 atmel Microcontroller.
Program for implementing AES on 8051 based microcontrollers. SDCC is used as the C compiler. Microcontroller used is P89V51RD2. There are 2 programs included. One program will accept string via UART and accept key via a 4x4 keypad and display decrypted text on 16x2 LCD. The other program will accept plaintext from UART and show encrypted text on 16x2 LCD after receiving key from 4x4 membrane keypad. Schematics and screenshots are included.
單總線多點(diǎn)測溫系統(tǒng),單總線它采用單根信號線既傳輸時鐘又傳輸數(shù)據(jù),而且數(shù)據(jù)傳輸是雙向的它具有節(jié)省I/O 口線資源結(jié)構(gòu)簡單成本低廉便于總線擴(kuò)展和
維護(hù)等諸多優(yōu)點(diǎn)。本系統(tǒng)中所有的DS18B20都接在單片機(jī)的P1.1口上。用一個液晶屏顯示,從單片機(jī)P3口接上8個開關(guān),與右邊的DS18B20
編號對應(yīng)。當(dāng)沒有開關(guān)按下時屏幕顯示"which NO you want press which key",要想看那一點(diǎn)處的溫度就按下幾號鍵(點(diǎn)擊key右邊的小紅
點(diǎn),按一下彈下,再按一下彈起)。只能有一個按鍵按下,當(dāng)有多個按鍵下時,屏幕上顯示“please press one key only !".
very simple nonvisual Delphi component useful for shareware program developing.
It uses crypted license files containing information about exe file (size and crc), expired date and any additional information.
As TArtLicense uses RSA asymmetric algorithm and TArtLicense knows only decryption key, nobody can change information inside license file.