试用维吉利亚密码的方法，以ART（不区分大小写）为密钥对任意给定的字母进行加密。（加密方法：将字母a,b,c…z 对应数字0,1,2……25。明文字母m，密文c，密钥k，c=m+ki mod 26 (I=1,2,3)。例如：m="data security"对应数字"3,0,19,0,18,......,19,24"；k="best" 对应数字为"1,4,18,19"密钥长度为4。c="eeltt ……r"）其中c1=m1 + k1 mod 26 = 4 (e)，c5=m5+k1 mod 26=19(t)，c12=m12 +k4 mod 26 = 17 (r)。-Password维吉利亚trial approach to ART (not case-sensitive) as the key for any given encrypted letters. (Encryption methods: the letters a, b, c ... z corresponds to the number 0,1,2 ... ... 25. Expressly letters m, ciphertext c, the key k, c = m+ ki mod 26 (I = 1,2, 3). For example: m = " data security"　corresponds to the number of " 3,0,19,0,18 ,......, 19,24"　 k = " best"　corresponding figure for the " 1,4,18 , 19 " key length of 4. c ="　eeltt ... ... r " ) in which c1 = m1+ k1 mod 26 = 4 (e), c5 = m5+ k1 mod 26 = 19 (t), c12 = m12+ k4 mod 26 = 17 (r).