This is the step by step procedure to generate certificate on master slave and witness server for the database replication on microsoft SQL

1. OUTBOUND A
On the master database, create the database master key, if needed.
USE master;
CREATE MASTER KEY ENCRYPTION BY PASSWORD = 'Motorola1';
GO
Make a certificate for this server instance.
use master;
create certificate HOST_A_CERT with subject ='HOST_A Certificate'
GO
Create a mirroring endpoint for server instance using the certificate.
create ENDPOINT Endpoint_Mirroring STATE=STARTED AS TCP(LISTENER_PORT=7024,
LISTENER_IP=ALL)
FOR DATABASE_MIRRORING(AUTHENTICATION=CERTIFICATE
HOST_A_CERT,ENCRYPTION=REQUIRED
ALGORITHMAES,ROLE=ALL);
Backup the HOST_A certificate and copy it to other system HOST-B
BACKUP CERTIFICATE HOST_A_CERT TO FILE='C:backupHOST_A_CERT.cer'
OUTBOUND B
On the master database, create the database master key, if needed.
USE master;
CREATE MASTER KEY ENCRYPTION BY PASSWORD = 'Motorola1';
GO

2. Make a certificate for this server instance.
use master;
create certificate HOST_B_CERT with subject ='HOST_B Certificate'
GO
Create a mirroring endpoint for server instance using the certificate.
create ENDPOINT Endpoint_Mirroring STATE=STARTED AS TCP(LISTENER_PORT=7024,
LISTENER_IP=ALL)
FOR DATABASE_MIRRORING(AUTHENTICATION=CERTIFICATE
HOST_B_CERT,ENCRYPTION=REQUIRED
ALGORITHMAES,ROLE=ALL);
Backup the HOST_B certificate and copy it to other systemHOST-B
BACKUP CERTIFICATE HOST_B_CERT TO FILE='C:backupHOST_B_CERT.cer'
OUTBOUND C
On the master database, create the database master key, if needed.
USE master;
CREATE MASTER KEY ENCRYPTION BY PASSWORD = 'Motorola1';
GO
Make a certificate for this server instance.
use master;
create certificate HOST_C_CERT with subject ='HOST_C Certificate'
GO

3. Create a mirroring endpoint for server instance using the certificate.
create ENDPOINT Endpoint_Mirroring STATE=STARTED AS TCP(LISTENER_PORT=7024,
LISTENER_IP=ALL)
FOR DATABASE_MIRRORING(AUTHENTICATION=CERTIFICATE
HOST_C_CERT,ENCRYPTION=REQUIRED
ALGORITHMAES,ROLE=ALL);
Backup the HOST_C certificate and copy it to other system HOST-B
BACKUP CERTIFICATE HOST_C_CERT TO FILE='C:backupHOST_C_CERT.cer'
INBOUND A FOR B
To configure HOST_A for inbond connections:
1. create login on HOST-A for HOST-B
use master;
create login HOST_B_LOGIN with PASSWORD = 'Motorola1'
2. Create a user for that login
create user HOST_B_USER FOR LOGIN HOST_B_LOGIN;
GO
3. Associate the certificate with the user:
create CERTIFICATE HOST_B_CERT AUTHORIZATION HOST_B_USER FROMFILE =
'C:backupHOST_B_CERT.cer'

4. 4. Grant connect permissions on the login for the remote mirroring end point
Grant CONNECT on ENDPOINT::Endpoint_Mirroring TO [HOST_B_LOGIN];
GO
INBOUND A FOR C
To configure HOST_A for inbond connections:
1. create login on HOST-A for HOST-C
use master;
create login HOST_C_LOGIN with PASSWORD = 'Motorola1'
2. Create a user for that login
create user HOST_C_USER FOR LOGIN HOST_C_LOGIN;
GO
3. Associate the certificate with the user:
create CERTIFICATE HOST_C_CERT AUTHORIZATION HOST_C_USER FROMFILE =
'C:backupHOST_C_CERT.cer'
4. Grant connect permissions on the login for the remote mirroring end point
Grant CONNECT on ENDPOINT::Endpoint_Mirroring TO [HOST_C_LOGIN];
GO

5. INBOUND B FOR A
To configure HOST_B for inbond connections:
1. create login on HOST-B for HOST-A
use master;
create login HOST_A_LOGIN with PASSWORD = 'Motorola1'
2. Create a user for that login
create user HOST_A_USER FOR LOGIN HOST_A_LOGIN;
GO
3. Associate the certificate with the user:
create CERTIFICATE HOST_A_CERT AUTHORIZATION HOST_A_USER FROMFILE =
'C:backupHOST_A_CERT.cer'
4. Grant connect permissions on the login for the remote mirroring end point
Grant CONNECT on ENDPOINT::Endpoint_Mirroring TO [HOST_A_LOGIN];
GO
INBOUND B FOR C
To configure HOST_B for inbond connections:
1. create login on HOST-B for HOST-C
use master;
create login HOST_C_LOGIN with PASSWORD = 'Motorola1'

6. 2. Create a user for that login
create user HOST_C_USER FOR LOGIN HOST_C_LOGIN;
GO
3. Associate the certificate with the user:
create CERTIFICATE HOST_C_CERT AUTHORIZATION HOST_C_USER FROMFILE =
'C:backupHOST_C_CERT.cer'
4. Grant connect permissions on the login for the remote mirroring end point
Grant CONNECT on ENDPOINT::Endpoint_Mirroring TO [HOST_C_LOGIN];
GO
INBOUND C FOR A
To configure HOST_C for inbond connections:
1. create login on HOST-C for HOST-A
use master;
create login HOST_A_LOGIN with PASSWORD = 'Motorola1'
2. Create a user for that login
create user HOST_A_USER FOR LOGIN HOST_A_LOGIN;
GO
3. Associate the certificate with the user:
create CERTIFICATE HOST_A_CERT AUTHORIZATION HOST_A_USER FROMFILE =
'C:backupHOST_A_CERT.cer'

7. 4. Grant connect permissions on the login for the remote mirroring end point
Grant CONNECT on ENDPOINT::Endpoint_Mirroring TO [HOST_A_LOGIN];
GO
INBOUND C FOR B
To configure HOST_C for inbond connections:
1. create login on HOST-C for HOST-B
use master;
create login HOST_B_LOGIN with PASSWORD = 'Motorola1'
2. Create a user for that login
create user HOST_B_USER FOR LOGIN HOST_B_LOGIN;
GO
3. Associate the certificate with the user:
create CERTIFICATE HOST_B_CERT AUTHORIZATION HOST_B_USER FROMFILE =
'C:backupHOST_B_CERT.cer'
4. Grant connect permissions on the login for the remote mirroring end point
Grant CONNECT on ENDPOINT::Endpoint_Mirroring TO [HOST_B_LOGIN];
GO