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US 2018/0295103 A1Published application
Use of optical transport network overhead data for encryption
AssigneeFujitsu Limited
InventorsMuhammad Sakhi Sarwar, Erik Charles Stewart, Junichi Sugiyama
Life of this patent
Estimating the term…
Abstract
Methods and systems may use optical transport network overhead data for encryption. In particular, specific overhead encryption bits and other encryption data may be stored in an OTN header and used for signaling between a transmitter and a receiver for encrypted transmission without lost data frames.
Claims20
A method for encryption in optical transport networks, the method comprising:
- receiving, at a transmitter and a receiver, provisioning instructions for provisioning an optical path between a first port at the transmitter and a second port at the receiver in an optical transport network (OTN);
- receiving, at the transmitter and at the receiver, encryption instructions to encrypt a data payload in OTN frames transmitted from the first port to the second port;
- and
- using overhead encryption bits in an overhead portion of the OTN frames for encryption signaling, the overhead encryption bits including:
- a set_encryption bit indicative of whether the data payload is encrypted or unencrypted;
- a deprovision_encryption bit indicative of deprovisioning of encrypting the data payload;
- and
- at least one encryption key bit identifying an encryption key selected from a plurality of encryption keys.
5 more elements
An optical transport network (OTN), comprising:
- an optical path provisioned between a first port at a transmitter and a second port at a receiver included in the OTN, wherein the transmitter and the receiver are enabled for:
- receiving provisioning instructions for provisioning the optical path;
- receiving encryption instructions to encrypt a data payload in OTN frames transmitted from the first port to the second port;
- and
- using overhead encryption bits in an overhead portion of the OTN frames for encryption signaling, the overhead encryption bits including:
- a set_encryption bit indicative of whether the data payload is encrypted or unencrypted;
- a deprovision_encryption bit indicative of deprovisioning of encrypting the data payload;
- and
- at least one encryption key bit identifying an encryption key selected from a plurality of encryption keys.
6 more elements
Dependencies are inferred from the claim text.