EP 1388230 B1 20050216 - METHOD AND DEVICE FOR ENCRYPTING A DISCRETE SIGNAL AND METHOD AND DEVICE FOR DECRYPTING THE SAME
Title (en)
METHOD AND DEVICE FOR ENCRYPTING A DISCRETE SIGNAL AND METHOD AND DEVICE FOR DECRYPTING THE SAME
Title (de)
VERFAHREN UND VORRICHTUNG ZUM VERSCHLÜSSELN EINES DISKRETEN SIGNALS SOWIE VERFAHREN UND VORRICHTUNG ZUR ENTSCHLÜSSELUNG
Title (fr)
PROCEDE ET DISPOSITIF DESTINES AU CRYPTAGE D'UN SIGNAL DISCRET, ET PROCEDE ET DISPOSITIF DE DECRYPTAGE
Publication
Application
Priority
- DE 10138650 A 20010807
- EP 0208661 W 20020802
Abstract (en)
[origin: WO03015328A2] The invention relates to a method for encrypting a discrete signal that consists of subsequent scanned values (62), according which subsequent scanned values (62) are divided up into subsequent time blocks (66) and the subsequent time blocks (66) are then encoded in encoded data blocks (70) having a predetermined order. The predetermined order of the encoded data blocks (70) is then modified in accordance with a predetermined exchange instruction (76, 80). Due to the integration of a time discontinuity, the inventive method allows a very high security of encryption. Mistakes that occur when signals encrypted in this manner are processed without authorization can be prevented and the compatibility with standard codings can be ensured by carrying out the modification of the chronological order after the discrete signal has been encoded, that is with respect to encoded data blocks into which an encoder encodes the discrete signal.
IPC 1-7
IPC 8 full level
H04K 1/06 (2006.01)
CPC (source: EP US)
H04K 1/06 (2013.01 - EP US)
Designated contracting state (EPC)
AT CH DE FR GB LI
DOCDB simple family (publication)
WO 03015328 A2 20030220; WO 03015328 A3 20031127; AT E289461 T1 20050315; DE 10138650 A1 20030227; DE 50202283 D1 20050324; EP 1388230 A2 20040211; EP 1388230 B1 20050216; HK 1059518 A1 20040702; US 2004196971 A1 20041007; US 8520843 B2 20130827
DOCDB simple family (application)
EP 0208661 W 20020802; AT 02751172 T 20020802; DE 10138650 A 20010807; DE 50202283 T 20020802; EP 02751172 A 20020802; HK 04101815 A 20040312; US 48630402 A 20020802