US 11,895,100 B2
Upstream approach for secure cryptography key distribution and management for multi-site data centers
Govind Prasad Sharma, Union City, CA (US); Javed Asghar, Dublin, CA (US); Prabhu Balakannan, Milpitas, CA (US); and Sridhar Vallepalli, Fremont, CA (US)
Assigned to Cisco Technology, Inc., San Jose, CA (US)
Filed by Cisco Technology, Inc., San Jose, CA (US)
Filed on Jul. 27, 2020, as Appl. No. 16/940,114.
Application 16/940,114 is a continuation of application No. 16/166,973, filed on Oct. 22, 2018, granted, now 10,778,662.
Prior Publication US 2020/0358750 A1, Nov. 12, 2020
Int. Cl. H04L 9/40 (2022.01); H04L 9/08 (2006.01); H04L 12/46 (2006.01); H04L 69/14 (2022.01); H04L 69/22 (2022.01)
CPC H04L 63/062 (2013.01) [H04L 9/0891 (2013.01); H04L 12/4641 (2013.01); H04L 63/0428 (2013.01); H04L 63/166 (2013.01); H04L 69/14 (2013.01); H04L 69/22 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method performed at least partly by a multi-site controller (MSC) for a multi-site network, the method comprising:
receiving, at the MSC and from a first site of the multi-site network, a request to distribute an encryption key to a second site of the multi-site network, wherein the request includes a value associated with the encryption key;
sending, from the MSC and to the second site, the encryption key and the value, wherein the encryption key is configured to decrypt encrypted packets sent from the first site;
receiving, at the MSC and from the second site, an acknowledgment that the encryption key was received at the second site; and
sending, from the MSC and to the first site, a confirmation that the encryption key and the value were received at the second site.