C.I.E – Carta di Identità Elettronica Functional Specification Version 2.0

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13. Cryptographic algoritmsThis annex describes the crypto used in CIE and it’s split in two parts:• Asymmetric Algorithms: RSA• Symmetric Algorithms: DES, 3DES, MAC313.1 RSA (Rimvest-Shamir-Adleman)In this section, the following notation will be followed:Symbol DescriptionpqNedMCFirst secret primeSecond secret primeModulus (N=p*q)Public exponentPrivate exponentPlain dataCiphered dataTable 61: Symbols legendThe public transformation in RSA (used for encipher a plaintext or verify a digital signature) isdefined from the mathematical operation:C = M e mod NThe private transformation in RSA (used for decipher a cipher text or to sign digitally) is definedfrom the mathematical operation:M = C d mod NThe command GENERATE KEY PAIR in the CIE generates a key pair having the followingcharacteristics:• The modulus N is an 1024 bits long integer.• The length in bits of the public exponent e is in the range from 16 to 64.CIE - Functional Specification v 2.0 -Page 72/76
• The length in bits of the private exponent d is the same of the modulus.The plain text M may be a 1024 bits integer smaller than the modulus (usually the most significantbyte is zero).13.2 Symmetric algorithmsDifferently from RSA (and other asymmetric algoritms) where different keys (public and private)are used for direct and inverse transformation, symmetric algorithms are characterized by the use ofthe same key for both operations.Symbol DescriptionKK 1K 2K 3D KD -1 KDES KeyThe first DES key for 3DES computationThe second DES key for 3DES computationThe third DES key for 3DES computationDES with key KInverse DES with key K3D K1K2 3DES with keys K 1 and K 2ENCDECMCEncipheringDeciperingPlain dataCiphered dataTable 62: Symbols legend for asymmetric cryptography13.2.1 DES (Data Encryption Standard)The Data Encryption Standard (DES) was developed by an IBM team around 1974 and adopted as anational standard in 1977 in fact is one of the FIPS approved algorithms for encryption. DES wasthe first official U.S. government cipher intended for commercial use and it’s the most widely usedcryptosystem in the world.The DES algorithm is specified in FIPS 46-3.In the CIE the DES is used only as Triple DESCIE - Functional Specification v 2.0 -Page 73/76
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C.I.E. - Carta di Identità Elettro
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Table of Contents1. Revision Histor
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12.17 GENERATE KEY PAIR ...........
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2. IntroductionThis document is the
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4. Reference Documents1. ISO/IEC 78
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Public Key - That key of an entity
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lsbLSBMACMFmsbMSBMSEMTSCOSOCIPINPPP
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6. Electrical ParametersFor all ele
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8. Answer To Reset (ATR)The Answer
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XXh XXh H5/H6 Y02h H7 Y49h H8 Y54h
Page 21 and 22: 9. Application SelectionNo explicit
Page 23 and 24: Record structure:The EF is seen at
Page 25 and 26: Linear Variable TLV or Cyclic EFSiz
Page 27 and 28: The card maintains an internal Secu
Page 29 and 30: BSO ID 1 01h to 1FhOPTION 1 See Tab
Page 31 and 32: RSA public key Exponent for Authent
Page 33 and 34: 11.4 Secure MessagingThe Secure Mes
Page 35 and 36: Byte Nr. SM Condition1 ENC USE IN2
Page 37 and 38: • Step 4: APDU command set up in
Page 39 and 40: 11.4.5 SM Response in SM_ENCOrigina
Page 41 and 42: 11.4.7 SM Response in SM_ENC_SIGOri
Page 43 and 44: 12. APDU ReferenceThe CIE supports
Page 45 and 46: 6A 86 Incorrect P1-P26A 87 Lc incon
Page 47 and 48: The PUT DATA - DATA_OCI acts on the
Page 49 and 50: 3DES - SM Cipher 10h 83h 03h3DES -
Page 51 and 52: 3 8Fh 6 BYTE 1: Not used - MUST be
Page 53 and 54: Table35Table 34: SELECT FILE Comman
Page 55 and 56: The operation is possible if the ac
Page 57 and 58: n has to be different from FFh.P1=0
Page 59 and 60: First and NextLast and PreviousSecu
Page 61 and 62: acktrackingallowed.b6 = 0b5 = 0b4 -
Page 63 and 64: 12.13 RESET RETRY COUNTERCLA INS P1
Page 65 and 66: 12.15 GIVE RANDOMCLA INS P1 P2 P3 D
Page 67 and 68: Security:The access condition to sa
Page 69 and 70: The access condition to satisfy is
Page 71: 0X 04 00 00 LC = 00 EmptyTable 59:
Page 75 and 76: • a sequence of q cipher text blo
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