MD5 passwords in PostgreSQL Database

Hi!
I have to store some MD5 hashed passwords in a table in a my PostgreSQL Database. The problem is that when I try to store those "hashed" Strings with an INSERT Statement I get the error: java.sql.SQLException: ERROR: parser: parse error at or near "��h".
This happens not always when I hash and store a clear text String with the MD5 algorithm. Some Strings work fine others not! I think it has something to do with the character encoding in my JDBC Driver. I use the ISO-8859-15 encoding.
Please give me some hints to solve this problem!
Thx

I'm not an MD5 expert, but as far as I know the MD5 code is "binary" meaning, it can contain values below 32 which are non-printable characters (and even negativ values as they are bytes). I think you have to encode the MD5 checksum as e.g. Base64
Thomas

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ppp     auth required         pam_dhkeys.so.1
ppp     auth required         pam_dial_auth.so.1
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other   session required      pam_unix_session.so.1
other   password required     pam_dhkeys.so.1
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netmasks:   files
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