dict_key=1 and 1=convertvarchar100substringsysfn_sqlvarbasetostrHashBytesMD5188541332--是攻击信息吗

The provided input appears to be an SQL injection attempt. It is attempting to manipulate the query by using the '1=convert(varchar(100),substring(sys.fn_sqlvarbasetostr(HashBytes('MD5','188541')),3,32))--' statement. This technique is commonly used to exploit vulnerabilities in an application's database layer.

It is crucial to prevent and mitigate SQL injection attacks by properly sanitizing and validating user input, and by using parameterized queries or prepared statements.