In order to prevent man-in-the-middle attacks, the authorization server MUST require the use of TLS with server authentication as defined by RFC2818 for any request sent to the authorization and token endpoints. The client MUST validate the authorization server’s TLS certificate as defined by RFC6125 and in accordance with its requirements for server identity authentication.
SuiteCRM uses key cryptography in order to encrypt and decrypt, as well as verify the integrity of signatures.
Please ensure that you have the following:
OpenSSL PHP Extension installed and configured
The SuiteCRM instance must be configured to use HTTPS/SSL
You need to have PHP version 5.5.9, or 7.0 and above
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