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f59b5652a343786673021c98989987de | 103 794 | 2 References | |
f59b5652a343786673021c98989987de | 103 794 | 2.1 Normative references | References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. Referenced documents which a... |
f59b5652a343786673021c98989987de | 103 794 | 2.2 Informative references | References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. NOTE: While any hyperlinks i... |
f59b5652a343786673021c98989987de | 103 794 | 3 Definition of terms, symbols and abbreviations | |
f59b5652a343786673021c98989987de | 103 794 | 3.1 Terms | For the purposes of the present document, the terms given in ETSI EN 303 613 [1] and ETSI TR 121 905 [i.1] apply. |
f59b5652a343786673021c98989987de | 103 794 | 3.2 Symbols | Void. |
f59b5652a343786673021c98989987de | 103 794 | 3.3 Abbreviations | For the purposes of the present document, the abbreviations given in ETSI EN 303 613 [1], ETSI TR 121 905 [i.1] and the following apply: ATS Abstract Test Suite GCF Global Certification Forum ICS Implementation Conformance Statement IUT Implementation Under Test PICS Protocol Implementation Conformance Statement PTCRB ... |
f59b5652a343786673021c98989987de | 103 794 | 4 Protocol aspects | The supplier of an implementation shall complete the Implementation Conformance Statement (ICS) in Annex A of ETSI TS 136 523-2 [4]. The parts of the Table A.4.4-1 of ETSI TS 136 523-2 [4] which are applicable to ETSI EN 303 613 [1] are items 148 to 157. The protocol tests performed shall be as described in clauses 7.3... |
f59b5652a343786673021c98989987de | 103 794 | 5 Radio transmission and reception aspects | The supplier of an implementation shall complete the Implementation Conformance Statement (ICS) in Annex A of ETSI TS 136 521-2 [7]. The items applicable to ETSI EN 303 613 [1] are in Tables A.4.3-4d, A.4.3-4da and A.4.3-4db. The radio transmission and reception tests performed shall be as defined in ETSI TS 136 523-1 ... |
f59b5652a343786673021c98989987de | 103 794 | 6 Protection of DSRC tolling stations | The supplier of an implementation shall complete the Protocol Implementation Conformance Statement (PICS) in Annex A of ETSI TS 102 916-1 [9] for Mode A. The Test Suite Structure and Test Purposes (TSS&TP) used shall be as defined in ETSI TS 102 916-2 [10]. The Abstract Test Suites (ATS) used shall be as defined in ETS... |
b825df04b252ffee5ac707aacb34483d | 103 789 | 1 Scope | The purpose of the present document is to summarize Radar related parameters for object detection, identification and RCS measurement and to develop a physical test setup (e.g. based on fixed and moving targets with specified RCS) to provide a simplified test for the assessment of RBS and RBR requirements. Therefore, a... |
b825df04b252ffee5ac707aacb34483d | 103 789 | 2 References | |
b825df04b252ffee5ac707aacb34483d | 103 789 | 2.1 Normative references | References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. Referenced documents which a... |
b825df04b252ffee5ac707aacb34483d | 103 789 | 2.2 Informative references | References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. NOTE: While any hyperlinks i... |
b825df04b252ffee5ac707aacb34483d | 103 789 | 3 Definition of terms, symbols and abbreviations | |
b825df04b252ffee5ac707aacb34483d | 103 789 | 3.1 Terms | For the purposes of the present document, the following terms apply: assessment area/volume: area/volume the target could move based on the test set-up and specified based on the intended use supporting structure: to realize larger distances for simulating the intended use and positioning the object/target in the asses... |
b825df04b252ffee5ac707aacb34483d | 103 789 | 3.2 Symbols | For the purposes of the present document, the following symbols apply: Aeff effective area of the receiving antenna [m²] c speed of light: 299 792 458 [m/s] D distance between EUT and target [m] DT maximal distance between EUT and target for the use-case Dwp maximum distance to the target based on the wanted technical ... |
b825df04b252ffee5ac707aacb34483d | 103 789 | 3.3 Abbreviations | For the purposes of the present document, the following abbreviations apply: AFR Alias Free Range CAN Controller Area Network CPD Child Presence Detection e.i.r.p. equivalent isotropically radiated power EURAD European Radar Conference EUT Equipment Under Test FAR False Alarm Rate HPBW Half Power Beamwidth IRS Internat... |
b825df04b252ffee5ac707aacb34483d | 103 789 | 4 Object and Radar Cross-Section | |
b825df04b252ffee5ac707aacb34483d | 103 789 | 4.1 Radar Cross-Section (RCS) | |
b825df04b252ffee5ac707aacb34483d | 103 789 | 4.1.1 General | Informally, the RCS of a target is the cross-sectional area of a perfectly reflecting sphere that would produce the same strength reflection as would the target in question. (Bigger sizes of this imaginary sphere would produce stronger reflections.) Thus, RCS is an abstraction: the Radar Cross-Sectional area of an obje... |
b825df04b252ffee5ac707aacb34483d | 103 789 | 4.1.2 Radar equation | The RCS of a radar target is the hypothetical area required to intercept the transmitted power density at the target as if the total intercepted power were re-radiated isotopically. This is a complex statement that can be understood by examining the monostatic radar (radar transmitter and receiver co-located, see figur... |
b825df04b252ffee5ac707aacb34483d | 103 789 | 4.1.3 Maximum detection distance | The maximum detection distance for a EUT is if the received signal is equal to the sensitivity level of the receiver Psen, (see clause 4.1.2, equation (4)). Together with equation (4) and equation (3) (see clause 4.1.2) the maximum detection distance Dmax for a EUT with the same antenna gain for the transmitting and re... |
b825df04b252ffee5ac707aacb34483d | 103 789 | 4.1.4 Scaling distance and RCS | |
b825df04b252ffee5ac707aacb34483d | 103 789 | 4.1.4.1 General on scaling | In equation (6) the EUT related parameter and the frequency are constant, the maximal distance the EUT is able to detect an object is only relating to the RCS of the object, see equation (7). = × × (×) × = √ × (7) If the maximum detection distance Dwp according to the wanted tech... |
b825df04b252ffee5ac707aacb34483d | 103 789 | 4.1.4.2 Scaling limitations for considering in related standard | There are limitations to the RCS vs. distance scaling approach. The related standard shall consider the following points in context with the use-case, wanted technical performance and restrict the scaling as necessary, if one of the conditions below would apply: • the detection algorithm of the EUT is configured for a ... |
b825df04b252ffee5ac707aacb34483d | 103 789 | 4.1.5 Receiving power based on distance and RCS (in dB) | Based on clause 4.1.2, equation (3) and the case that the antenna gain for the transmitting and receiving path will be considered separately. This would lead to: P = × × × (×)× × RCS (10) With the mathematical consideration: P[dBW]= 10log (P[W]) (11) ETSI ETSI TS 103 789 V1.1.1 (2023-05) 13 The received power PR... |
b825df04b252ffee5ac707aacb34483d | 103 789 | 4.2 Direct Object Reflectors | Summary mechanical objects, details inside a specific Annex A. The shape and size of radar targets depend on the desired Radar Cross-Section (RCS). Conducting spheres as well as square or triangular shaped corner reflectors of different sizes are most suitable for this purpose. The equations for the Radar Cross-Section... |
b825df04b252ffee5ac707aacb34483d | 103 789 | 5 RCS of targets | The present document provides the following information on Radar Cross-Section (RCS) and targets: • In clauses 4.2 and A.1 are information on typical simplified mechanical test targets. More information on mechanical targets are also available in [i.16]. • Clause A.2 of the present document provides guidance to find an... |
b825df04b252ffee5ac707aacb34483d | 103 789 | 6 Test Set-up | 6.1 General points and points to be considered in related standard The proposed replacement of a human or parts of could be done by a mechanical radar target (reflector). This simplification was used in test and presented in several publications, see clause 2. For most of the assessed use-cases and applications there i... |
b825df04b252ffee5ac707aacb34483d | 103 789 | 6.2 Radar Target | Based on Annex A there are several technical solutions possible to realize a mechanical radar target. Based on the required RCS in dBm2 (provided by the use-case in the related standard) there may be a mechanical limitation (in size) to use one or the other mechanical solution. For that reason, the kind and size of the... |
b825df04b252ffee5ac707aacb34483d | 103 789 | 6.3 Set-up 1: rotating Target, RCS varies within a range | Within this setup the specified object is rotating around an axis. The RCS varies within a range. This depends on the orientation of the object in relation to the EUT. The relative movement (delta in the distance and in speed) of the object to the EUT could be specified with an arm between the rotating axis and the obj... |
b825df04b252ffee5ac707aacb34483d | 103 789 | 6.4 Set-up 2: rotating Target, constant RCS to the EUT | In this set-up the object/RCS is realized in such a way that the visible RCS for the EUT is constant but there would be a change in the distance. Technical possibilities to realize such set up is shown in Annex F. The related standard shall consider following points in context with the use-case; wanted technical perfor... |
b825df04b252ffee5ac707aacb34483d | 103 789 | 6.5 Set-up 3: constant RCS to the EUT with small movement | Within this setup the RCS as seen by the EUT is constant and the movement/delta in the distance is small. A solution for such could be realized based on an actuator (e.g. loudspeaker), see figure 12. Figure 12: Principal solution to realize a fixed RCS with a small delta in the distance The related standard shall consi... |
b825df04b252ffee5ac707aacb34483d | 103 789 | 6.6 Set-up 4: constant RCS to the EUT with large movement | Within this setup the RCS is constant as seen by the EUT and the movement/delta in the distance could be realized over a larger range. A solution for such could be realized based on a linear actuator, see figure 13. ETSI ETSI TS 103 789 V1.1.1 (2023-05) 24 Figure 13: Principal solution to realize a fixed RCS with a lar... |
b825df04b252ffee5ac707aacb34483d | 103 789 | 6.7 Measurement uncertainty of the radar target | A typical uncertainty for a mechanical targets/target set-up is around: ±2 to ±3 dB. ETSI ETSI TS 103 789 V1.1.1 (2023-05) 25 |
b825df04b252ffee5ac707aacb34483d | 103 789 | 7 RCS measurement | |
b825df04b252ffee5ac707aacb34483d | 103 789 | 7.1 Justification for RCS measurement with VNA | Radar Cross-Section (RCS) is the measure of a target's ability to reflect a radar signal in the direction of the radar receiver i.e. it is the measure of the ratio of backscatter per steradian in the direction of the radar (from the object) to the power density that is intercepted by the target, see clauses 4.1 and 4.2... |
b825df04b252ffee5ac707aacb34483d | 103 789 | 7.2 Preparation set-up | |
b825df04b252ffee5ac707aacb34483d | 103 789 | 7.2.1 Vector Network Analyser (VNA) | The VNA shown in figure 15 and figure 16 measures the S-parameters in the frequency domain. The VNA shall be able to operate over the OFR of the EUT in the related standard. The time domain function of the VNA will transform the S-parameter frequency domain measurement (S11/S21 vs. frequency) to the time domain (S11/S2... |
b825df04b252ffee5ac707aacb34483d | 103 789 | 7.2.2 Test antennas | The measurement antenna shown in figure 15 and figure 16 shall be able to operate over the OFR of the EUT in the related standard and shall have the same kind of polarization as the EUT. If the EUT polarization is not known the RCS of the object/target could be assessed in horizontal and vertical polarization planes (e... |
b825df04b252ffee5ac707aacb34483d | 103 789 | 7.2.3 Test set-up arrangement | For the assessment of the maximum measurement range D the transform process is the Alias Free Range (AFR). The transform is a circular function and repeats itself periodically outside of its inherent time range that is: t = 1/(Frequency Step Size) The frequency step size is proportional to the frequency span and invers... |
b825df04b252ffee5ac707aacb34483d | 103 789 | 7.3 RCS assessment | |
b825df04b252ffee5ac707aacb34483d | 103 789 | 7.3.1 Antenna System Calibration | The RCS of known target geometries and their corresponding Radar Cross-Section (RCS) are shown in clause A.1. The ideal standard to use is a conducting sphere of a known diameter. For example, a 1,13 m diameter sphere has an RCS of 1 m2 that is independent of frequency. The diameter of the sphere whose RCS corresponds ... |
b825df04b252ffee5ac707aacb34483d | 103 789 | 7.3.2 RCS assessment procedure | For the RCS assessment use the following steps: Step 1: Run an OSM calibration of the VNA (including the necessary cables), see figure 19 (and figure 16). ETSI ETSI TS 103 789 V1.1.1 (2023-05) 29 Figure 19: OSM calibration for one-port test set-up Step 2: Connect one port of the VNA to the measurement antenna. Step 3: ... |
012fcfda0b6fb15c1007016fb2789afa | 103 745 | 1 Scope | The present document specifies sharing solutions for use of the frequency band 5 915 - 5 925 MHz (Band U) by Urban Rail and Road ITS considering that Urban Rail has priority in that band. In addition, it addresses the shared use of the band 5 875 - 5 915 MHz (Band R) by Urban Rail ITS, where Road ITS has priority. |
012fcfda0b6fb15c1007016fb2789afa | 103 745 | 2 References | |
012fcfda0b6fb15c1007016fb2789afa | 103 745 | 2.1 Normative references | References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. Referenced documents which a... |
012fcfda0b6fb15c1007016fb2789afa | 103 745 | 2.2 Informative references | References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. NOTE: While any hyperlinks i... |
012fcfda0b6fb15c1007016fb2789afa | 103 745 | 3 Definition of terms, symbols and abbreviations | |
012fcfda0b6fb15c1007016fb2789afa | 103 745 | 3.1 Terms | For the purposes of the present document, the following terms apply: Band R: frequency band 5 875 - 5 915 MHz Band U: frequency band 5 915 - 5 925 MHz Restricted Modes of Operation (RMO): set of operational constraints that may be imposed on a specified set of devices under certain conditions RMO map: data collection c... |
012fcfda0b6fb15c1007016fb2789afa | 103 745 | 3.2 Symbols | Void. |
012fcfda0b6fb15c1007016fb2789afa | 103 745 | 3.3 Abbreviations | For the purposes of the present document, the following abbreviations apply: API Application Programming Interface ASN.1 Abstract Syntax Notation One CBTC BS Communications-Based Train Control Base Station CBTC Communication Based Train Control C-ITS Cooperative Intelligent Transport Systems EIRP Equivalent Isotropic R... |
012fcfda0b6fb15c1007016fb2789afa | 103 745 | 4 General overview | Existing CBTC systems operate in the frequency band 5 915 - 5 935 MHz. RITS-Ss operate in the 5 875 - 5 915 MHz band (Band R) and more spectrum is likely to be necessary in the future to enable all the envisaged services. To address this issue, the Commission made the decision to allow Road ITS use of the 5 915 - 5 925... |
012fcfda0b6fb15c1007016fb2789afa | 103 745 | 5 Use of Band U | |
012fcfda0b6fb15c1007016fb2789afa | 103 745 | 5.1 RMO Service description | The RMO Service enables (possibly non-interoperable) devices to use a given frequency band under conditions that respect the devices that have priority in that frequency band. In particular, this service is designed to enable use of Band U by RITS-Ss while avoiding interference to URITS-Es operating in that band. The R... |
012fcfda0b6fb15c1007016fb2789afa | 103 745 | 5.2 Structure and content of the RMO Service. | The RMO service involves the definition of several structures that are elements of an RMO map that is distributed to devices subject to the requirements in the RMO map. An RMO map is composed of one or more RMO zones. An RMO zone contains a rmoRegionIdentifier that refers to a geographic region (RMO region), a set of a... |
012fcfda0b6fb15c1007016fb2789afa | 103 745 | 5.3 Requirements | An RITS-S intending to transmit in any portion of Band U and which is subject to the present document shall comply with the conditions for use of that band as specified in clause 5.5. These conditions are contained in the RMO map available on an RMO map server. The validity of an RMO map, including the RMO zones, and R... |
012fcfda0b6fb15c1007016fb2789afa | 103 745 | 5.4 Application Programming Interface | In order to provide a machine-readable interface, the distribution of signed RMO map and RMO Region structures shall be done via a defined web-endpoint distribution centre of the map server. End-points are available as plain http, reachable at the following URL: http://<HOST>. <HOST> is the map server URL defined by a ... |
012fcfda0b6fb15c1007016fb2789afa | 103 745 | 5.5 Restricted Modes of Operation applicable to RITS-Ss | |
012fcfda0b6fb15c1007016fb2789afa | 103 745 | 5.5.1 Description | Clauses 5.5.2 to 5.5.3 describe three restricted modes of operation. NOTE: Additional restricted modes of operation may be added in the future. Since RITS-Ss apply at least one RMO listed in a "sequenceOfRmo", adding a RMO to a sequenceOfRmo does not impose additional restrictions on RITS-Ss that can use the band witho... |
012fcfda0b6fb15c1007016fb2789afa | 103 745 | 5.5.2 Class noTx(0) | The NoTransmission class (noTx) in a region is a prohibition on transmission by RITS-Ss in the channel set out by the parameter restrictedChannel of the RMO structure. When located in a RmoRegion having a RmoClass of type noTx, i.e. equal to 0, the RITS-S shall not transmit in the restrictedChannel. ETSI ETSI TS 103 74... |
012fcfda0b6fb15c1007016fb2789afa | 103 745 | 5.5.3 Class eirp(1) | When located in an RmoRegion having an RmoClass of type eirp, i.e. equal to 1, the RITS-S shall limit its EIRP to the maximum value defined by the parameter "limit" set out in the RMO structure and expressed in dBm. This limit applies to the power radiated by the RITS-S in the frequency band contained in the parameter ... |
012fcfda0b6fb15c1007016fb2789afa | 103 745 | 5.5.4 Class allowedOnPeriods(2) | The purpose of the "AllowedOnPeriod" RMO is to provide RITS-S with an opportunity to send packets during a short period of time on a regular basis while URITS-E have access to the channel majority of the time without RITS-S transmission. When located in a RmoRegion having a RmoClass of type allowedOnPeriods, i.e. equal... |
012fcfda0b6fb15c1007016fb2789afa | 103 745 | 6 Use of Band R | The use of Band R is regulated by Commission Implementing Decision (EU) 2020/1426 [i.1] and by ECC Decision (08)01 [i.5]. Road ITS shall have priority below 5 915 MHz and Urban Rail ITS shall have priority above 5 915 MHz, so that protection is afforded to the application having priority. ETSI ETSI TS 103 745 V1.1.1 (2... |
856850865c40cb04931b6c475756c133 | 103 744 | 1 Scope | The present document specifies several methods for deriving cryptographic keys from multiple shared secrets. The shared secrets are established using existing traditional key establishment schemes, like Elliptic Curve Diffie-Hellman (ECDH) in NIST SP800-56Ar3 [1], and new quantum-safe Key Encapsulation Mechanisms (KEMs... |
856850865c40cb04931b6c475756c133 | 103 744 | 2 References | |
856850865c40cb04931b6c475756c133 | 103 744 | 2.1 Normative references | References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. Referenced documents which a... |
856850865c40cb04931b6c475756c133 | 103 744 | 2.2 Informative references | References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. NOTE: While any hyperlinks i... |
856850865c40cb04931b6c475756c133 | 103 744 | 3 Definition of terms, symbols and abbreviations | |
856850865c40cb04931b6c475756c133 | 103 744 | 3.1 Terms | For the purposes of the present document, the following terms apply: asymmetric cryptography: cryptographic system that utilizes a pair of keys, a private key known only to one entity, and a public key that can be openly distributed without loss of security big-endian: octet ordering that signifies "big-end", or most s... |
856850865c40cb04931b6c475756c133 | 103 744 | 3.2 Symbols | For the purposes of the present document, the following symbols apply: A || B The concatenation of binary strings A followed by B ∅ A zero-length octet string [x]n An integer value x expressed as an n-bit integer q The least integer value x greater than or equal to q len(A) The number of octets in an octet string A h... |
856850865c40cb04931b6c475756c133 | 103 744 | 3.3 Abbreviations | For the purposes of the present document, the following abbreviations apply: AES Advanced Encryption Standard BP-P BrainPool elliptic curve over finite Prime field CAVP Cryptographic Algorithm Validation Program CDH Cofactor Diffie-Hellman CID Ciphersuite IDentifier ECC Elliptic Curve Cryptography ECDH Elliptic Curve D... |
856850865c40cb04931b6c475756c133 | 103 744 | 4 Purpose of quantum-safe hybrid key establishment | |
856850865c40cb04931b6c475756c133 | 103 744 | 4.1 Status of quantum-safe key encapsulation mechanisms | NIST has initiated a process of analysing and standardizing one or more new quantum-safe key encapsulation mechanisms suitable to replace traditional key establishment schemes. At the time of the present document, there is one FIPS approved standard, FIPS 203 [11]. The present document addresses the following cases: 1)... |
856850865c40cb04931b6c475756c133 | 103 744 | 5.1 Functional entities | There are two entities defined for quantum-safe hybrid key establishment, an Initiator A that initiates a key establishment scheme, and a Responder B who responds to the request. The entities communicate over a network medium. EXAMPLE: Examples of such mediums are: ethernet, wireless and cellular networks. Figure 1: Co... |
856850865c40cb04931b6c475756c133 | 103 744 | 5.2 Information relationships (reference points) | The network media over which the Initiator and Responder communicate will have a packet formatting scheme that allows the encoding and transmission of octet (byte) strings. The Initiator and Responder will exchange messages, where each message is an octet string that can span multiple packets. MA denotes a message from... |
856850865c40cb04931b6c475756c133 | 103 744 | 6 Introductory information | |
856850865c40cb04931b6c475756c133 | 103 744 | 6.1 Introduction | Quantum-safe hybrid key establishment combines a traditional key establishment scheme, like ECDH and a quantum- safe Key Encapsulation Mechanism (KEM). Hybrid key establishment schemes specified in the present document use two or more shared secrets to derive cryptographic key material using a key derivation function. ... |
856850865c40cb04931b6c475756c133 | 103 744 | 6.2 Notation | |
856850865c40cb04931b6c475756c133 | 103 744 | 6.2.1 Radix | The prefix "0x" indicates hexadecimal numbers. |
856850865c40cb04931b6c475756c133 | 103 744 | 6.2.2 Conventions | The assignment operator "=", as used in several programming languages: <variable> = <expression> means that <variable> assumes the value that <expression> had before the assignment took place. For instance: x = x + y + 3 means: (new value of x) becomes (old value of x) + (old value of y) + 3. |
856850865c40cb04931b6c475756c133 | 103 744 | 6.2.3 Bit/Byte ordering | All data variables are represented with the most significant bit (or byte) on the left-hand side and the least significant bit (or byte) on the right-hand side. Where a variable is broken down into a number of sub-strings, the left most (most significant) sub-string is numbered 0, the next most significant is numbered,... |
856850865c40cb04931b6c475756c133 | 103 744 | 6.2.4 Integer encoding | Integers are represented in the bit/byte ordering defined in clause 6.2.3. The most significant bit (or byte) on the left-hand side and the least significant bit (or byte) on the right-hand side. EXAMPLE: A 32-bit integer of the value I = 37 is encoded as: I = 0x00000025 NOTE: This is big-endian or network byte orderin... |
856850865c40cb04931b6c475756c133 | 103 744 | 7 Cryptographic primitives | |
856850865c40cb04931b6c475756c133 | 103 744 | 7.1 Hash functions (hash) | A hash function maps an arbitrary length bit string (input) to a fixed length (digest_len) octet string output (digest): digest = hash(input) Approved hash functions for the purpose of the present document shall be limited to those in the following list: • SHA-256, SHA-384 as defined in FIPS PUB 180-4 [4]. |
856850865c40cb04931b6c475756c133 | 103 744 | 7.2 Context formatting function (f) | |
856850865c40cb04931b6c475756c133 | 103 744 | 7.2.1 Context formatting function (f) description | The context formatting functions used in the present document take a list of inputs and return an octet string. A generic calling interface to the context function f used in the present document is defined in the present clause: context = f(val1, val2,…) where the parameters and output shall be defined as follows: Inpu... |
856850865c40cb04931b6c475756c133 | 103 744 | 7.2.2 Concatenate-based context formatting function | The present clause defines a concatenate-based context formatting function. The concatenate-based context formatting function takes an ordered sequence of octet strings and converts them into a length-delimited single octet string. The concatenate-based context formatting function f has the following calling interface:... |
856850865c40cb04931b6c475756c133 | 103 744 | 7.2.3 Concatenate-and-hash-based context formatting function | The present clause defines a concatenate-and-hash context formatting function. The concatenate-and-hash context formatting function takes an ordered sequence of octet strings and converts them into a length delimited octet string. The concatenate-and-hash-based context formatting function f has the following calling in... |
856850865c40cb04931b6c475756c133 | 103 744 | 7.3 PseudoRandom Function (PRF) | |
856850865c40cb04931b6c475756c133 | 103 744 | 7.3.1 PRF description | A PseudoRandom Function generates output from a random (or secret) seed such that the output is computationally indistinguishable from truly random output. A generic calling interface to the PRF used in the present document is defined in the present clause: output = PRF(secret, val1, val2, …) where the parameters and o... |
856850865c40cb04931b6c475756c133 | 103 744 | 7.3.2 PRF to HMAC mapping | This clause specifies a mapping from the PRF definition to HMAC with a specified hash function. HMAC shall be as defined in IETF RFC 2104 [2] with an approved SHA2 hash function from clause 7.1 and has a calling interface: output = HMAC(secret, data) where the prerequisite, parameters, and output shall be defined as fo... |
856850865c40cb04931b6c475756c133 | 103 744 | 7.3.3 PRF to KMAC mapping | This clause specifies a mapping from the PRF definition to KMAC function, KMAC128 or KMAC256. KMAC shall be as defined in NIST SP800-185 [9] and has a calling interface: output = KMAC(K, X, L, S) ETSI ETSI TS 103 744 V1.2.2 (2026-02) 15 where the prerequisite, parameters, and output shall be defined as follows: Prerequ... |
856850865c40cb04931b6c475756c133 | 103 744 | 7.4 Key Derivation Functions (KDFs) | |
856850865c40cb04931b6c475756c133 | 103 744 | 7.4.1 KDF description | The key derivation functions used in the present document are derived from PRFs. A generic calling interface to the KDFs used in the present document is defined in the present clause: key_material = KDF(secret, label, context, length) where the parameters and output shall be defined as follows: Input: secret - an octet... |
856850865c40cb04931b6c475756c133 | 103 744 | 7.4.2 KDF to HKDF mapping | This clause specifies a mapping from the KDF definition to HKDF with a SHA2 hash function from clause 7.1. HKDF shall be as defined in IETF RFC 5869 [3] and has a calling interface: key_material = HKDF(secret, salt, info, length) where the parameters and output shall be defined as follows: Input: secret - an octet stri... |
856850865c40cb04931b6c475756c133 | 103 744 | 7.4.3 KDF to HMAC mapping | This clause specifies a mapping from the KDF definition to an HMAC implementation of the NIST SP800-56Cr2 [10] One step Key Derivation Function using HMAC. HMAC shall be as defined in IETF RFC 2104 [2] with an approved SHA2 hash function from clause 7.1 and has a calling interface: output = HMAC(secret, data) where the... |
856850865c40cb04931b6c475756c133 | 103 744 | 7.4.4 KDF to KMAC mapping | This clause specifies a mapping from the KDF definition to KMAC implementation of the NIST SP800-56Cr2 [10] One step Key Derivation Function using KMAC128 or KMAC256. KMAC shall be as defined in NIST SP800-185 [9] and has a calling interface: key_material = KMAC(K, X, L, S) where the parameters and output shall be defi... |
856850865c40cb04931b6c475756c133 | 103 744 | 7.5 Elliptic Curve Diffie-Hellman (ECDH) |
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