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>30.10. Miscellaneous Functions</A
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>   As always, there are some functions that just don't fit anywhere.
  </P
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><CODE
CLASS="FUNCTION"
>PQencryptPassword</CODE
>
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>      Prepares the encrypted form of a <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> password.
      </P><PRE
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>       char * PQencryptPassword(const char *passwd, const char *user);
      </PRE
><P>
      This function is intended to be used by client applications that
      wish to send commands like <TT
CLASS="LITERAL"
>ALTER USER joe PASSWORD
      'pwd'</TT
>.  It is good practice not to send the original cleartext
      password in such a command, because it might be exposed in command
      logs, activity displays, and so on.  Instead, use this function to
      convert the password to encrypted form before it is sent.  The
      arguments are the cleartext password, and the SQL name of the user
      it is for.  The return value is a string allocated by
      <CODE
CLASS="FUNCTION"
>malloc</CODE
>, or <TT
CLASS="SYMBOL"
>NULL</TT
> if out of
      memory.  The caller can assume the string doesn't contain any
      special characters that would require escaping.  Use
      <CODE
CLASS="FUNCTION"
>PQfreemem</CODE
> to free the result when done with it.
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