调用相应的API对BLOB数据 相应的加密和解密 PL/SQL 加密解密 –加密function encrypt_aes256 (p_blob in blob, p_key in varchar2) return blobas l_key_raw raw(32); l_returnvalue blob;begin /* Purpose: encrypt blob Remarks: p_key should be 32 charac
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--加密function encrypt_aes256 (p_blob in blob, p_key in varchar2) return blobas l_key_raw raw(32); l_returnvalue blob;begin /* Purpose: encrypt blob Remarks: p_key should be 32 characters (256 bits / 8 = 32 bytes) Who Date Description ------ ---------- ------------------------------------- MBR 20.01.2011 Created */ --获得 raw类型的key l_key_raw := utl_raw.cast_to_raw (p_key); dbms_lob.createtemporary (l_returnvalue, false); dbms_crypto.encrypt (l_returnvalue, p_blob, g_encryption_type_aes, l_key_raw<i>本文来源gaodai$ma#com搞$$代**码)网@</i>); return l_returnvalue;end encrypt_aes256;--解密 function decrypt_aes256 (p_blob in blob, p_key in varchar2) return blobas l_key_raw raw(32); l_returnvalue blob;begin /* Purpose: decrypt blob Remarks: p_key should be 32 characters (256 bits / 8 = 32 bytes) Who Date Description ------ ---------- ------------------------------------- MBR 20.01.2011 Created */ l_key_raw := utl_raw.cast_to_raw (p_key); dbms_lob.createtemporary (l_returnvalue, false); dbms_crypto.decrypt (l_returnvalue, p_blob, g_encryption_type_aes, l_key_raw); return l_returnvalue;end decrypt_aes256;
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