The February 9th, 1995 version of the SSL document differs from https://www.netscape.com in the following ways. ===== The key material for generating a SSL_CK_DES_64_CBC_WITH_MD5 key is KEY-MATERIAL-0 = MD5[MASTER-KEY,"0",CHALLENGE,CONNECTION-ID] not KEY-MATERIAL-0 = MD5[MASTER-KEY,CHALLENGE,CONNECTION-ID] as specified in the documentation. ===== From the section 2.6 Server Only Protocol Messages If the SESSION-ID-HIT flag is non-zero then the CERTIFICATE-TYPE, CERTIFICATE-LENGTH and CIPHER-SPECS-LENGTH fields will be zero. This is not true for https://www.netscape.com. The CERTIFICATE-TYPE is returned as 1. ===== I have not tested the following but it is reported by holtzman@mit.edu. SSLref clients wait to receive a server-verify before they send a client-finished. Besides this not being evident from the examples in 2.2.1, it makes more sense to always send all packets you can before reading. SSLeay was waiting in the server to receive a client-finish before sending the server-verify :-). I have changed SSLeay to send a server-verify before trying to read the client-finished.