Abstract: The invention concerns a method and system for manufacturing a three-dimensional part by a computer-aided manufacturing process, and an associated method and system for detecting a manufacturing process breach in a computer-aided manufacturing process of a three-dimensional part. The three-dimensional part manufacturing comprises computing pedigree information (10) relating to the manufacturing process of the three-dimensional part, wherein the pedigree information (10) gives access to pedigree data of the manufacturing process of the three-dimensional part, the pedigree data comprising manufacturing data (8D) collected during the manufacturing process of the three-dimensional part, and inserting a mark (20) encoding the pedigree information on a surface or within a volume of the three-dimensional part, to obtain a marked three-dimensional part (24).

Abstract: Transmission method for VOD “Push” programs, comprising the steps of: transmission of a stream containing VOD “Push” programs from a remote server over a broadcasting network to a destination of multiple decoders, storage of program units in the memory by each decoder; the stream containing a first program unit comprising a first audio/video content, a second program unit comprising a second audio/video content, and a third program unit comprising a list containing at least the identifiers of the first and second units, according to which, when the decoder receives a command for playing the third program unit, it proceeds to displaying on the screen successively the first and the second audio/video contents, depending on the data present in a field of metadata of the third program unit.

Abstract: This invention relates to a transmission method for conditional access content, in which said content is broadcast in the form of data packets (DP). These data packets contain at least one marker having a known value and a useful part (PL). This method includes the following steps: extraction of said marker (Mc) from the data packet (DP) and replacement of this marker with an encryption key identification information (PAR); encryption of said useful part (PL) by an encryption key (K1) that can be identified by said encryption key identification information (PAR); formation of an encrypted data packet containing at least said encryption key identification information (PAR) and the encrypted useful part (PLK1); transmission of said encrypted data packet to at least one receiver.

Abstract: Example embodiments relate to an encryption and decryption method for a conditional access content, including (a) extracting a marker (Mc) from a data packet (DP); (b) creating a first marking block including the marker (Mc) and a second padding value (PAD2); (c) encrypting the first marking block with a second encryption key (K2); (d) encrypting a second encrypted marking value (MK2) of the first encrypted marking block; (e) creating a mixed marking block including the second encrypted marking value (MK2) a the first encrypted padding element (PADK1); (f) decrypting the mixed marking block a device of the first encryption key (K1), in order to obtain a decrypted mixed marking block; (g) extracting a predetermined part of the decrypted mixed marking block; (h) comparing the extracted part with a reference value (Mc; PDV2); and (i) if the comparison leads to an identity, determining a new set of encryption parameters different to the first set of encryption parameters and repeating steps b) to h) in which the

Abstract: This invention relates to an encryption and decryption method for a conditional access content, in which the content is broadcast in the form of data packets (DP), the previous packets being encrypted by a first key (K1) associated to a first padding value (PAD1) and to a first encrypted padding element (PADK1) and the following packets being encrypted by a second key (K2) associated to a second padding value (PAD2) and to a second encrypted padding element (PADK2). In this method, the first key (K1) and the first padding value (PAD1) form a first set of encryption parameters, the second key (K2) and the second padding value forming a second set of encryption parameters.

Abstract: This invention relates to a transmission method for conditional access content, in which said content is broadcast in the form of data packets (DP). These data packets contain at least one marker having a known value and a useful part (PL). This method includes the following steps: extraction of said marker (Mc) from the data packet (DP) and replacement of this marker with an encryption key identification information (PAR); encryption of said useful part (PL) by an encryption key (K1) that can be identified by said encryption key identification information (PAR); formation of an encrypted data packet containing at least said encryption key identification information (PAR) and the encrypted useful part (PLK1); transmission of said encrypted data packet to at least one receiver.