| 摘要 |
<p>The present invention discloses a digital data transforming method. The method solves the problems of low encoding efficiency and increasing the network load when prepared to transmit enciphered e-mails or any 8-bit data sequence. The key technology is designing a 'base-91 encoding' general bit strings to printable ASCII characters which is also referred to base91 encoding or Radix-91 encoding. Combined with Internet standard SMTP, MIME, S/MIME etc., the present invention can reduce 7.7 % of transmitted data or storage demand in place of Base64 encoding; and reduce 58.97 % of transmitted data or storage demand in place of QP encoding which processes the byte data with the high bit being 1. The present invention is applied in enciphering the Internet e-mails and transmitting or storing the compressed data.</p> |
