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* varchar at least eight (8) characters<ref>[https://www.owasp.org/index.php/Password_length_%26_complexity Password length & complexity - OWASP] "Minimum length. Passwords should be at least eight (8) characters long." </ref>
 
* varchar at least eight (8) characters<ref>[https://www.owasp.org/index.php/Password_length_%26_complexity Password length & complexity - OWASP] "Minimum length. Passwords should be at least eight (8) characters long." </ref>
  
=== 雜湊碼 (hash value) e.g. MD5, SHA ===
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=== 雜湊碼 (hash value) ===
 
* [https://zh.wikipedia.org/wiki/MD5 MD5]:  CHAR(32) or VARCHAR(32)<ref>[https://stackoverflow.com/questions/14922208/can-i-use-varchar32-for-md5-values php - Can I use VARCHAR(32) for md5() values? - Stack Overflow]</ref>
 
* [https://zh.wikipedia.org/wiki/MD5 MD5]:  CHAR(32) or VARCHAR(32)<ref>[https://stackoverflow.com/questions/14922208/can-i-use-varchar32-for-md5-values php - Can I use VARCHAR(32) for md5() values? - Stack Overflow]</ref>
 
* [https://zh.wikipedia.org/wiki/SHA%E5%AE%B6%E6%97%8F SHA] 256<ref>[https://stackoverflow.com/questions/2240973/how-long-is-the-sha256-hash mysql - How long is the SHA256 hash? - Stack Overflow]</ref><ref>[http://fishjerky.blogspot.com/2013/06/md5sha512.html 魚乾的筆記本: MD5被破解了,要改用SHA]</ref>:  
 
* [https://zh.wikipedia.org/wiki/SHA%E5%AE%B6%E6%97%8F SHA] 256<ref>[https://stackoverflow.com/questions/2240973/how-long-is-the-sha256-hash mysql - How long is the SHA256 hash? - Stack Overflow]</ref><ref>[http://fishjerky.blogspot.com/2013/06/md5sha512.html 魚乾的筆記本: MD5被破解了,要改用SHA]</ref>:  

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