公开(公告)号：US09813250B2

公开(公告)日：2017-11-07

申请号：US14945649

申请日：2015-11-19

Applicant: WhatsApp Inc.

Inventor： Bryan D O'Connor ,  Eugene Fooksman

IPC: H04L9/32 ,  H04L9/08

CPC classification number: H04L9/3271 ,  H04L9/0819 ,  H04L9/0863 ,  H04L9/3234 ,  H04L9/3297

Abstract: A system and methods are provided for establishing an authenticated and encrypted communication connection between two devices with at most two round-trip communications. During establishment of an initial authenticated, encrypted communication connection (or afterward), a first device (e.g., a server) provides the second device (e.g., a client) with a token (e.g., a challenge) that lives or persists beyond the current connection. After that connection is terminated and the second device initiates a new connection, it uses the token as part of the handshaking process to reduce the necessary round-trip communications to one.

公开(公告)号：US10187215B2

公开(公告)日：2019-01-22

申请号：US15804291

申请日：2017-11-06

Applicant: WhatsApp Inc.

Inventor： Bryan D O'Connor ,  Eugene Fooksman

IPC: H04L9/32 ,  H04L9/08

Abstract: A system and methods are provided for establishing an authenticated and encrypted communication connection between two devices with at most two round-trip communications. During establishment of an initial authenticated, encrypted communication connection (or afterward), a first device (e.g., a server) provides the second device (e.g., a client) with a token (e.g., a challenge) that lives or persists beyond the current connection. After that connection is terminated and the second device initiates a new connection, it uses the token as part of the handshaking process to reduce the necessary round-trip communications to one.