MSSQL 2019 Encrypt / Decrypt 대칭키 암호화 사용 (AES_256) /* -- 테이블 생성 Create Table RTable ( R_ID VARCHAR(20), -- R_Value VARCHAR(20), -- R_Var varbinary(256) NOT NULL -- 구분 ) -- drop master key Create Master key Encryption by Password = '비밀번호입력' -- drop Certificate mCertify Create Certificate mCertify with Subject = 'keyCert', EXPIRY_DATE = '2099-12-01'; -- 만료일자 go -- drop symmetric key mCKey Create Sy..
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: UNPROTECTED PRIVATE KEY FILE! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ Permissions 0644 for '/Users/kkkkk/.ssh/id_rsa' are too open. It is required that your private key files are NOT accessible by others. This private key will be ignored. Load key "/Users/kkkk/.ssh/id_rsa": bad permissions ubuntu@xxx.xxx..
dotnet ef migrations add Initial dotnet ef migrations remove 삭제 오류메시지: The migration '20220518102320_Initial' has already been applied to the database. Revert it and try again. If the migration has been applied to other databases, consider reverting its changes using a new migration instead. 해결 --> 1. dotnet ef database update 0 2. dotnet ef migrations remove 업데이트 해주고 삭제. 오류 메시지: The name 'Initi..
1. sudo nano pishutbtn.py ---------------------------------------------------------------------- #!/usr/bin/python # shutdown/reboot(/power on) Raspberry Pi with pushbutton import RPi.GPIO as GPIO from subprocess import call from datetime import datetime import time # pushbutton connected to this GPIO pin, using pin 5 also has the benefit of # waking / powering up Raspberry Pi when button is pre..
var request = WebRequest.Create("Https://~~~~"); Error: TrustFailure (Authentication failed, see inner exception.) Let's Encrypt Root CA 인증이 2021-09-30 만료되었음. Let's Encrypt https 인증 받는 사이트의 Mono .Net Core 서비스는 Linux 에서 인증오류가 발생함. Mono applications cannot connect to a website using an SSL certificate issued by Let's Encrypt if their trust store includes the old DST Root CA X3 certificate that exp..
현재 백라이트 밝기 값 확인 cat /sys/class/backlight/rpi_backlight/brightness 백라이트 확인 cat /sys/class/backlight/rpi_backlight/bl_power 0이면 켜짐 1이면 꺼짐. 백라이트 밝기 조절 sudo sh -c 'echo "128" > /sys/class/backlight/rpi_backlight/brightness' 또는 sudo bash -c "echo 100 > /sys/class/backlight/rpi_backlight/brightness" 밝기 값: 0~255 (위 예제는 128로 설정)
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