Oracle Encryption and decryption ____oracle

Oracle Encryption and decryption

Cryptographic functions

Create or Replace function
Encrypt_des (P_text varchar2, P_key varchar2) return varchar2 is
V_text varchar2 (4000);
V_ENC varchar2 (4000);
Raw_input RAW (128);
Key_input RAW (128);
Decrypted_raw Raw (2048);
Begin
V_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

Decryption function

Create or Replace function decrypt_des (p_text varchar2,p_key varchar2) return varchar2 is
V_text VARCHAR2 (2000);
Begin
Dbms_obfuscation_toolkit. Desdecrypt (input_string => Utl_raw. CAST_TO_VARCHAR2 (P_text), key_string =>p_key, decrypted_string=> v_text);
V_text: = RTrim (V_TEXT,CHR (0));
Dbms_output.put_line (V_text);
return v_text;
End

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Encryption

Select Encrypt_des (' Feng ', ' Test#5&124*!de ') from dual;

Input secret key: 15+5=17 result: B33f50ea2f5e23d7

Decrypt

Select Decrypt_des (' B33f50ea2f5e23d7 ', ' Test#5&124*!de ') from dual;

Input secret key: 15+5=17 result: Feng