function encode( $str = '' ){ $strrev = strrev( $str ); $string = ''; for( $i=0; $i $char = substr( $strrev, $i, 1 ); $ordChar = ord( $char ) + 1; $char = chr( $ordChar ); $string = $string.$char; } $string = base64_encode( $string ); $str…

题目下载 给了n，e，其中n可以分解： p = 18443 q = 49891 依次进行解密即可。 import gmpy2 import libnum p = 18443 q = 49891 e = 19 s = (p- 1) * (q - 1) d = long(gmpy2.invert(e, s)) n = p *q b = '' a=[704796792,752211152,274704164,18414022,368…