加密函数:CREATE OR REPLACE function encrypt_info(p_text varchar2, p_key varchar2) return varchar2 isv_text varchar2(4000);v_enc varchar2(4000);raw_input RAW(128) ;key_input RAW(128) ;decrypted_raw RAW(2048);beginv_text := rpad( p_text, (trunc(length(p_text)/8)+1)*8, chr(0));raw_input := UTL_RAW.CAST_TO_RAW(v_text);key_input := UTL_RAW.CAST_TO_RAW(p_key);dbms_obfuscation_toolkit.DESEncrypt(input => raw_input,key => key_input,encrypted_data =>decrypted_raw);v_enc := rawtohex(decrypted_raw);dbms_output.put_line(v_enc);return v_enc;end; update info set phone= encrypt_des(phone,'padpad_padpadd') where phone is not null or phone !=''; 执行更新语句调用加密函数报错:ORA-28232: obfuscation 工具箱的输入长度无效ORA-06512: 在 "SYS.DBMS_OBFUSCATION_TOOLKIT_FFI", line 21ORA-06512: 在 "SYS.DBMS_OBFUSCATION_TOOLKIT", line 99ORA-06512: 在 "BB_SZRX.ENCRYPT_DES", line 12百度了半天没有解决,有没有大神懂得这方面啊