/*************************************************************************/
/*???????????????????????????????????????????????????????????????????????
/*?Describe?:?ADFGVX?Cipher?Function
/*?Input?key?and?plaintext
/*?Transform?key?into?a?matrix?of?5*5???
/*?Author?:?ZongNanYaoFengyi????????????????????????????????????????????
/*?Date?:?2009?-?7?-?23?13:09????????????????????????????????????????????
/*???????????????????????????????????????????????????????????????????????
/*************************************************************************/
#include?“string.h“
#include?“ctype.h“
#include?“stdlib.h“
#include?“stack-c.h“

int?ADFGVX（char?*keychar?*ciphertext）
{
	int?ijk;???????????//Define?cycle?control?variables
	char?Location[6]?=?{‘A‘‘D‘‘F‘‘G‘‘V‘‘X‘};???//?Define?look-up?table?used?to?locate?coordinate
	int?row;?????????//?Row?coordinates
	int?grade;???????//Column?coordinates
	int?plaintextLength;?
	int?ciphertextLength;
???????char?*plaintext;

	ciphertextLength?=?strlen（ciphertext）;?//Compute?length
????plaintext?=?（char?*）malloc（ciphertextLength+1）;?//??Encryption?for?every?letter
????strcpy（plaintextciphertext）;

	plaintextLength?=?strlen（plaintext）;????????
	for（i?=?0k?=?0;i?	{
		if（plaintext[i]?==?‘?‘）?
		{
			k?-=?2;
			continue;???????//?Filter?Spaces
		}
		for（j?=?0;j?			if（key[j]?==?tolower（plaintext[i]））
				break;??????????????????//?Search?the?letter?in?the?alphabet
		row?=?j?/?6;
		grade?=?j?%?6;????????????????????
		ciphertext[k]?=?Location[row];
		ciphertext[k?+?1]?=?Location[grade];
	}
	ciphertext[k]?=?‘\0‘;
	free（plaintext）;
	return?0;
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????1696??2009-08-20?11:22??ADFGVX.c

?????文件???????1689??2009-08-23?00:09??ADFGX.c

?????文件???????1139??2009-08-23?00:09??Affine.c

?????文件???????1539??2009-08-20?11:21??Beaufort.c

?????文件???????1516??2009-08-20?11:21??Box.c

?????文件???????1313??2009-08-22?11:22??Caesar.c

?????文件???????1249??2009-08-22?11:25??CharSingTabRe.c

?????文件???????1592??2009-08-20?11:19??DeADFGVX.c

?????文件???????1418??2009-08-23?00:23??DeADFGX.c

?????文件???????1242??2009-08-22?11:26??DeAffine.c

?????文件???????1381??2009-08-20?11:07??DeBeaufort.c

?????文件???????1564??2009-08-20?11:08??DeBox.c

?????文件???????1381??2009-08-22?11:26??DeCaesar.c

?????文件???????1049??2009-08-22?11:27??DeCharSingTabRe.c

?????文件???????1143??2009-08-22?11:28??DeGCaesar.c

?????文件???????1430??2009-08-20?11:20??DeMultiplicator.c

?????文件???????2756??2009-08-23?00:25??DePlayfair.c

?????文件???????1964??2009-08-22?11:33??DeSingTabRe.c

?????文件???????2803??2009-08-20?11:19??DeTranspose.c

?????文件???????1450??2009-08-23?00:04??DeVigenere.c

?????文件???????1141??2009-08-22?11:31??GCaesar.c

?????文件???????1280??2009-08-20?11:06??Multiplicator.c

?????文件???????3496??2009-08-23?00:10??Playfair.c

?????文件???????2071??2009-08-22?11:33??SingleTableRe.c

?????文件???????2329??2009-08-23?00:37??Transpose.c

?????文件???????1505??2009-08-20?11:03??Vigenere.c

-----------?---------??----------?-----??----

????????????????43136????????????????????26