![]() Only applications running on the same Windows Server will be able to decrypt the value stored in the registry. ![]() The encryption key is not stored in plaintext form it is protected using Windows Data Protection API (DPAPI, see for more information.) The Camtasia Relay server uses the DPAPI to have the Windows Local Security Authority encrypt the encryption key. The private key is generated at random during installation of the first Camtasia Relay team member unless an encryption key is already present in the registry. About the Private Key Used for Symmetric Encryption The private key used to encrypt the master LDAP password and publishing destination passwords is stored in the Windows registry under HKEY_LOCAL_MACHINE/SOFTWARE/TechSmith/Camtasia Relay Server/Key. The encrypted password is stored in the database and is decrypted by the server when publishing. The encrypted pass- word is stored in the database and is decrypted by the server when the master LDAP password is required for LDAP authentication (such as when Camtasia Relay must resynchronize a user managed by LDAP.) To encrypt publishing destination passwords (as well as iTunesU shared secrets), if provided for a pub- lishing destination. ![]() The Rijndael symmetric (private key) encryption algorithm is used in the following cases: To encrypt the master LDAP password, if provided during LDAP configuration. ![]() The SHA384 hash algorithm is used by the Camtasia Relay server in the following cases: -For users managed by Camtasia Relay, users’ passwords are salted and hashed multiple times and the resulting hash value is stored in the database. Cryptography Used by the Server The SHA1 hash algorithm is used by the Camtasia Relay server in the following cases: For the server’s web service, to calculate and verify the message digest for web service requests. This message digest helps prevent message tampering and to ensure that only authorized clients use the server’s web service to authenticate, retrieve profile information, and upload presentations. Camtasia Relay Installation Guide On both clients, to calculate a message digest of requests that will be sent to the server.
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