Unless , that is , TLS-PSK , the Secure Remote Password -LRB- SRP -RRB- protocol , or some other protocol is used that can provide strong mutual authentication in the absence of certificates .

Mutual authentication requires public key infrastructure -LRB- ORGANIZATION@1 -RRB- deployment to clients unless TLS-PSK or the Secure Remote Password -LRB- SRP -RRB- protocol are used , which provide strong mutual authentication without needing to deploy a ORGANIZATION@1 .
