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  • SQL证书加密

    --创建证书
    CREATE CERTIFICATE cert_TTS --证书名称
    ENCRYPTION BY PASSWORD ='sihuiTTS0001'--加密证书的密码
    WITH SUBJECT ='DB_Encrypt_TTS Database Encryption Certificate',--证书主题
    START_DATE ='3/14/2013', EXPIRY_DATE ='10/20/2015'--起止日期
    GO
    --备份
    BACKUP CERTIFICATE cert_TTS
    TO FILE='D:certTTS.BAK' --证书备份路径,用来加密
    WITH PRIVATE KEY (FILE='D:certTTSPK.BAK', --证书私钥文件路径,用来解密
    ENCRYPTION BY PASSWORD ='sihuiTTS0001', --加密私钥密码
    DECRYPTION BY PASSWORD ='sihuiTTS0001' ) --解密私钥密码
    
    --备份后,可以在其他数据库中使用这个证书,或使用DROP CERTIFICATE命令删除它。
    DROP CERTIFICATE cert_TTS
    GO
    --从备份文件中还原证书到数据库中
    CREATE CERTIFICATE cert_TTS
    FROMFILE='H:SqlBackupcertDemo.BAK'
    WITH PRIVATE KEY (FILE='H:SqlBackupcertDemoPK.BAK',
    DECRYPTION BY PASSWORD ='sihuiTTS0001' ,--解密私钥密码
    ENCRYPTION BY PASSWORD ='sihuiTTS0001')--加密私钥密码
    
    
    --从证书中删除私钥 
    ALTER CERTIFICATE cert_TTS 
    REMOVE PRIVATE KEY 
    
    --从备份文件为既有证书重新增加私钥 
    ALTER CERTIFICATE cert_TTS 
    WITH PRIVATE KEY 
    (FILE='H:SqlBackupcertDemoPK.BAK', 
    DECRYPTION BY PASSWORD ='sihuiTTS0001' ,--解密私钥密码 
    ENCRYPTION BY PASSWORD ='sihuiTTS0001')--加密私钥密码 
    
    --修改既有私钥的密码 
    ALTER CERTIFICATE cert_Demo 
    WITH PRIVATE KEY (DECRYPTION BY PASSWORD ='sihuiTTS0001', 
    ENCRYPTION BY PASSWORD ='mynewpassword!!!13E')
    
    
    select cast ( DecryptByCert( Cert_ID('cert_TTS') ,cityname ,N'sihuiTTS0001') as varchar(200)) from city
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  • 原文地址:https://www.cnblogs.com/Fashion/p/3257359.html
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