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oracle md5 函式

create or replace function md5(input_string VARCHAR2) return varchar2 IS raw_input RAW(128) := UTL_RAW.CAST_TO_RAW(input_string); decrypted_raw RAW(2048); error_in_input_buffer_length EXCEPTION; BEGIN sys.dbms_obfuscation_toolkit.MD5(input => raw_input, checksum => decrypted_raw); return lower(rawtohex(decrypted_raw)); END;