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1. (WO2013117243) LAWFUL INTERCEPTION OF ENCRYPTED COMMUNICATIONS
PCT Biblio. Data
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Pub. No.:
WO/2013/117243
International Application No.:
PCT/EP2012/057788
Publication Date:
15.08.2013
International Filing Date:
27.04.2012
Chapter 2 Demand Filed:
06.12.2013
IPC:
H04L 29/06
(2006.01)
H
ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
L
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
29
Arrangements, apparatus, circuits or systems, not covered by a single one of groups H04L1/-H04L27/136
02
Communication control; Communication processing
06
characterised by a protocol
Applicants:
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
[SE/SE]; S-164 83 Stockholm (SE)
(For All Designated States Except US)
.
NÄSLUND, Mats
[SE/SE]; (SE)
(For US Only)
.
IOVIENO, Maurizio
[IT/IT]; (IT)
(For US Only)
.
NORRMAN, Karl
[SE/SE]; (SE)
(For US Only)
Inventors:
NÄSLUND, Mats
; (SE).
IOVIENO, Maurizio
; (IT).
NORRMAN, Karl
; (SE)
Agent:
MITCHELL, Matthew
; Marks & Clerk LLP Fletcher House Heatley Road The Oxford Science Park Oxford OX4 4GE (GB)
Priority Data:
1202058.2
07.02.2012
GB
Title
(EN)
LAWFUL INTERCEPTION OF ENCRYPTED COMMUNICATIONS
(FR)
INTERCEPTION LÉGALE DE COMMUNICATIONS CHIFFRÉES
Abstract:
(EN)
A method and apparatus for providing access to an encrypted communication between a sending node and a receiving node to a Law Enforcement Agency (LEA). A Key Management Server (KMS) function stores cryptographic information used to encrypt the communication at a database. The cryptographic information is associated with an identifier used to identify the encrypted communication between the sending node and the receiving node. The KMS receives a request for Lawful Interception, the request including an identity of a Lawful Interception target. The KMS uses the target identity to determine the identifier, and retrieves the cryptographic information associated with the identifier from the database. The cryptographic information can be used to decrypt the encrypted communication. The KMS then sends either information derived from the cryptographic information or a decrypted communication towards the LEA. This allows the LEA to obtain a decrypted version of the communication.
(FR)
L'invention concerne un procédé et un appareil permettant de donner à un organisme d'application de la loi (LEA) l'accès à une communication chiffrée entre un nœud expéditeur et un nœud récepteur. Une fonction d'un serveur de gestion de clés (KMS) stocke dans une base de données des informations cryptographiques servant à chiffrer la communication. Ces informations cryptographiques sont associées à un identificateur destiné à identifier la communication chiffrée entre le nœud expéditeur et le nœud récepteur. Le KMS reçoit une demande d'interception légale incluant l'identité de la cible de l'interception légale. Ledit KMS utilise l'identité de la cible pour déterminer l'identificateur, et extrait de la base de données les informations cryptographiques associées audit identificateur. Les informations cryptographiques permettent de déchiffrer la communication chiffrée. Le KMS envoie alors vers la LEA les informations déduites grâce aux informations cryptographiques, ou bien une communication déchiffrée. Ainsi, la LEA peut obtenir une version déchiffrée de la communication.
Designated States:
AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language:
English (
EN
)
Filing Language:
English (
EN
)