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rfc:rfc5794

Independent Submission J. Lee Request for Comments: 5794 J. Lee Category: Informational J. Kim ISSN: 2070-1721 D. Kwon

                                                                C. Kim
                                                                  NSRI
                                                            March 2010
           A Description of the ARIA Encryption Algorithm

Abstract

 This document describes the ARIA encryption algorithm.  ARIA is a
 128-bit block cipher with 128-, 192-, and 256-bit keys.  The
 algorithm consists of a key scheduling part and data randomizing
 part.

Status of This Memo

 This document is not an Internet Standards Track specification; it is
 published for informational purposes.
 This is a contribution to the RFC Series, independently of any other
 RFC stream.  The RFC Editor has chosen to publish this document at
 its discretion and makes no statement about its value for
 implementation or deployment.  Documents approved for publication by
 the RFC Editor are not a candidate for any level of Internet
 Standard; see Section 2 of RFC 5741.
 Information about the current status of this document, any errata,
 and how to provide feedback on it may be obtained at
 http://www.rfc-editor.org/info/rfc5794.

Copyright Notice

 Copyright (c) 2010 IETF Trust and the persons identified as the
 document authors.  All rights reserved.
 This document is subject to BCP 78 and the IETF Trust's Legal
 Provisions Relating to IETF Documents
 (http://trustee.ietf.org/license-info) in effect on the date of
 publication of this document.  Please review these documents
 carefully, as they describe your rights and restrictions with respect
 to this document.

Lee, et al. Informational [Page 1] RFC 5794 The ARIA Encryption Algorithm March 2010

1. Introduction

1.1. ARIA Overview

 ARIA is a general-purpose block cipher algorithm developed by Korean
 cryptographers in 2003.  It is an iterated block cipher with 128-,
 192-, and 256-bit keys and encrypts 128-bit blocks in 12, 14, and 16
 rounds, depending on the key size.  It is secure and suitable for
 most software and hardware implementations on 32-bit and 8-bit
 processors.  It was established as a Korean standard block cipher
 algorithm in 2004 [ARIAKS] and has been widely used in Korea,
 especially for government-to-public services.  It was included in
 PKCS #11 in 2007 [ARIAPKCS].

2. Algorithm Description

 The algorithm consists of a key scheduling part and data randomizing
 part.

2.1. Notations

 The following notations are used in this document to describe the
 algorithm.
    ^   bitwise XOR operation
    <<< left circular rotation
    >>> right circular rotation
    ||  concatenation of bit strings
    0x  hexadecimal representation

2.2. Key Scheduling Part

 Let K denote a master key of 128, 192, or 256 bits.  Given the master
 key K, we first define 128-bit values KL and KR as follows.
 KL || KR = K || 0 ... 0,
 where the number of zeros is 128, 64, or 0, depending on the size of
 K.  That is, KL is set to the leftmost 128 bits of K and KR is set to
 the remaining bits of K (if any), right-padded with zeros to a
 128-bit value.  Then, we define four 128-bit values (W0, W1, W2, and
 W3) as the intermediate round values appearing in the encryption of
 KL || KR by a 3-round, 256-bit Feistel cipher.
 W0 = KL,
 W1 = FO(W0, CK1) ^ KR,
 W2 = FE(W1, CK2) ^ W0,
 W3 = FO(W2, CK3) ^ W1.

Lee, et al. Informational [Page 2] RFC 5794 The ARIA Encryption Algorithm March 2010

 Here, FO and FE, respectively called odd and even round functions,
 are defined in Section 2.4.1.  CK1, CK2, and CK3 are 128-bit
 constants, taking one of the following values.
 C1 =  0x517cc1b727220a94fe13abe8fa9a6ee0
 C2 =  0x6db14acc9e21c820ff28b1d5ef5de2b0
 C3 =  0xdb92371d2126e9700324977504e8c90e
 These values are obtained from the first 128*3 bits of the fractional
 part of 1/PI, where PI is the circle ratio.  Now the constants CK1,
 CK2, and CK3 are defined by the following table.
     Key size  CK1  CK2  CK3
       128     C1   C2   C3
       192     C2   C3   C1
       256     C3   C1   C2
 For example, if the key size is 192 bits, CK1 = C2, CK2 = C3, and
 CK3 = C1.
 Once W0, W1, W2, and W3 are determined, we compute encryption round
 keys ek1, ..., ek17 as follows.
 ek1  = W0 ^(W1 >>> 19),
 ek2  = W1 ^(W2 >>> 19),
 ek3  = W2 ^(W3 >>> 19),
 ek4  = (W0 >>> 19) ^ W3,
 ek5  = W0 ^ (W1 >>> 31),
 ek6  = W1 ^ (W2 >>> 31),
 ek7  = W2 ^ (W3 >>> 31),
 ek8  = (W0 >>> 31) ^ W3,
 ek9  = W0 ^ (W1 <<< 61),
 ek10 = W1 ^ (W2 <<< 61),
 ek11 = W2 ^ (W3 <<< 61),
 ek12 = (W0 <<< 61) ^ W3,
 ek13 = W0 ^ (W1 <<< 31),
 ek14 = W1 ^ (W2 <<< 31),
 ek15 = W2 ^ (W3 <<< 31),
 ek16 = (W0 <<< 31) ^ W3,
 ek17 = W0 ^ (W1 <<< 19).
 The number of rounds depends on the size of the master key as
 follows.
      Key size     Number of Rounds
       128              12
       192              14
       256              16

Lee, et al. Informational [Page 3] RFC 5794 The ARIA Encryption Algorithm March 2010

 Due to an extra key addition layer in the last round, 12-, 14-, and
 16-round algorithms require 13, 15, and 17 round keys, respectively.
 Decryption round keys are derived from the encryption round keys.
 dk1 = ek{n+1},
 dk2 = A(ek{n}),
 dk3 = A(ek{n-1}),
 ...,
 dk{n}= A(ek2),
 dk{n+1}= ek1.
 Here, A and n denote the diffusion layer of ARIA and the number of
 rounds, respectively.  The diffusion layer A is defined in Section
 2.4.3.

2.3. Data Randomizing Part

 The data randomizing part of the ARIA algorithm consists of the
 encryption and decryption processes.  The encryption and decryption
 processes use functions FO, FE, A, SL1, and SL2.  These functions are
 defined in Section 2.4.

2.3.1. Encryption Process

2.3.1.1. Encryption for 128-Bit Keys

 Let P be a 128-bit plaintext and K be a 128-bit master key.  Let ek1,
 ..., ek13 be the encryption round keys defined by K.  Then the
 ciphertext C is computed by the following algorithm.
 P1  = FO(P  , ek1 );              // Round 1
 P2  = FE(P1 , ek2 );              // Round 2
 P3  = FO(P2 , ek3 );              // Round 3
 P4  = FE(P3 , ek4 );              // Round 4
 P5  = FO(P4 , ek5 );              // Round 5
 P6  = FE(P5 , ek6 );              // Round 6
 P7  = FO(P6 , ek7 );              // Round 7
 P8  = FE(P7 , ek8 );              // Round 8
 P9  = FO(P8 , ek9 );              // Round 9
 P10 = FE(P9 , ek10);              // Round 10
 P11 = FO(P10, ek11);              // Round 11
 C   = SL2(P11 ^ ek12) ^ ek13;     // Round 12

Lee, et al. Informational [Page 4] RFC 5794 The ARIA Encryption Algorithm March 2010

2.3.1.2. Encryption for 192-Bit Keys

 Let P be a 128-bit plaintext and K be a 192-bit master key.  Let ek1,
 ..., ek15 be the encryption round keys defined by K.  Then the
 ciphertext C is computed by the following algorithm.
 P1  = FO(P  , ek1 );              // Round 1
 P2  = FE(P1 , ek2 );              // Round 2
 P3  = FO(P2 , ek3 );              // Round 3
 P4  = FE(P3 , ek4 );              // Round 4
 P5  = FO(P4 , ek5 );              // Round 5
 P6  = FE(P5 , ek6 );              // Round 6
 P7  = FO(P6 , ek7 );              // Round 7
 P8  = FE(P7 , ek8 );              // Round 8
 P9  = FO(P8 , ek9 );              // Round 9
 P10 = FE(P9 , ek10);              // Round 10
 P11 = FO(P10, ek11);              // Round 11
 P12 = FE(P11, ek12);              // Round 12
 P13 = FO(P12, ek13);              // Round 13
 C   = SL2(P13 ^ ek14) ^ ek15;     // Round 14

2.3.1.3. Encryption for 256-Bit Keys

 Let P be a 128-bit plaintext and K be a 256-bit master key.  Let ek1,
 ..., ek17 be the encryption round keys defined by K.  Then the
 ciphertext C is computed by the following algorithm.
 P1 = FO(P  , ek1 );              // Round 1
 P2 = FE(P1 , ek2 );              // Round 2
 P3 = FO(P2 , ek3 );              // Round 3
 P4 = FE(P3 , ek4 );              // Round 4
 P5 = FO(P4 , ek5 );              // Round 5
 P6 = FE(P5 , ek6 );              // Round 6
 P7 = FO(P6 , ek7 );              // Round 7
 P8 = FE(P7 , ek8 );              // Round 8
 P9 = FO(P8 , ek9 );              // Round 9
 P10= FE(P9 , ek10);              // Round 10
 P11= FO(P10, ek11);              // Round 11
 P12= FE(P11, ek12);              // Round 12
 P13= FO(P12, ek13);              // Round 13
 P14= FE(P13, ek14);              // Round 14
 P15= FO(P14, ek15);              // Round 15
 C  = SL2(P15 ^ ek16) ^ ek17;     // Round 16

Lee, et al. Informational [Page 5] RFC 5794 The ARIA Encryption Algorithm March 2010

2.3.2. Decryption Process

 The decryption process of ARIA is the same as the encryption process
 except that encryption round keys are replaced by decryption round
 keys.  For example, encryption round keys ek1, ..., ek13 of the
 12-round ARIA algorithm are replaced by decryption round keys dk1,
 ..., dk13, respectively.

2.4. Components of ARIA

2.4.1. Round Functions

 There are two types of round functions for ARIA.  One is called an
 odd round function and is denoted by FO.  It takes as input a pair
 (D,RK) of two 128-bit strings and outputs
 FO(D,RK) = A(SL1(D ^ RK)).
 The other is called an even round function and is denoted by FE.  It
 takes as input a pair (D,RK) of two 128-bit strings and outputs
 FE(D,RK) = A(SL2(D ^ RK)).
 Functions SL1 and SL2, called substitution layers, are described in
 Section 2.4.2.  Function A, called a diffusion layer, is described in
 Section 2.4.3.

2.4.2. Substitution Layers

 ARIA has two types of substitution layers that alternate between
 rounds.  Type 1 is used in the odd rounds, and type 2 is used in the
 even rounds.
 Type 1 substitution layer SL1 is an algorithm that takes a 16-byte
 string x0 || x1 ||...|| x15 as input and outputs a 16-byte string
 y0 || y1 ||...|| y15 as follows.
 y0 = SB1(x0),  y1 = SB2(x1),  y2 = SB3(x2),  y3 = SB4(x3),
 y4 = SB1(x4),  y5 = SB2(x5),  y6 = SB3(x6),  y7 = SB4(x7),
 y8 = SB1(x8),  y9 = SB2(x9),  y10= SB3(x10), y11= SB4(x11),
 y12= SB1(x12), y13= SB2(x13), y14= SB3(x14), y15= SB4(x15).
 Type 2 substitution layer SL2 is an algorithm that takes a 16-byte
 string x0 || x1 ||...|| x15 as input and outputs a 16-byte string
 y0 || y1 ||...|| y15 as follows.

Lee, et al. Informational [Page 6] RFC 5794 The ARIA Encryption Algorithm March 2010

 y0 = SB3(x0),  y1 = SB4(x1),  y2 = SB1(x2),  y3 = SB2(x3),
 y4 = SB3(x4),  y5 = SB4(x5),  y6 = SB1(x6),  y7 = SB2(x7),
 y8 = SB3(x8),  y9 = SB4(x9),  y10= SB1(x10), y11= SB2(x11),
 y12= SB3(x12), y13= SB4(x13), y14= SB1(x14), y15= SB2(x15).
 Here, SB1, SB2, SB3, and SB4 are S-boxes that take an 8-bit string as
 input and output an 8-bit string.  These S-boxes are defined by the
 following look-up tables.
    SB1:
        0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
     00 63 7c 77 7b f2 6b 6f c5 30 01 67 2b fe d7 ab 76
     10 ca 82 c9 7d fa 59 47 f0 ad d4 a2 af 9c a4 72 c0
     20 b7 fd 93 26 36 3f f7 cc 34 a5 e5 f1 71 d8 31 15
     30 04 c7 23 c3 18 96 05 9a 07 12 80 e2 eb 27 b2 75
     40 09 83 2c 1a 1b 6e 5a a0 52 3b d6 b3 29 e3 2f 84
     50 53 d1 00 ed 20 fc b1 5b 6a cb be 39 4a 4c 58 cf
     60 d0 ef aa fb 43 4d 33 85 45 f9 02 7f 50 3c 9f a8
     70 51 a3 40 8f 92 9d 38 f5 bc b6 da 21 10 ff f3 d2
     80 cd 0c 13 ec 5f 97 44 17 c4 a7 7e 3d 64 5d 19 73
     90 60 81 4f dc 22 2a 90 88 46 ee b8 14 de 5e 0b db
     a0 e0 32 3a 0a 49 06 24 5c c2 d3 ac 62 91 95 e4 79
     b0 e7 c8 37 6d 8d d5 4e a9 6c 56 f4 ea 65 7a ae 08
     c0 ba 78 25 2e 1c a6 b4 c6 e8 dd 74 1f 4b bd 8b 8a
     d0 70 3e b5 66 48 03 f6 0e 61 35 57 b9 86 c1 1d 9e
     e0 e1 f8 98 11 69 d9 8e 94 9b 1e 87 e9 ce 55 28 df
     f0 8c a1 89 0d bf e6 42 68 41 99 2d 0f b0 54 bb 16
    SB2:
        0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
     00 e2 4e 54 fc 94 c2 4a cc 62 0d 6a 46 3c 4d 8b d1
     10 5e fa 64 cb b4 97 be 2b bc 77 2e 03 d3 19 59 c1
     20 1d 06 41 6b 55 f0 99 69 ea 9c 18 ae 63 df e7 bb
     30 00 73 66 fb 96 4c 85 e4 3a 09 45 aa 0f ee 10 eb
     40 2d 7f f4 29 ac cf ad 91 8d 78 c8 95 f9 2f ce cd
     50 08 7a 88 38 5c 83 2a 28 47 db b8 c7 93 a4 12 53
     60 ff 87 0e 31 36 21 58 48 01 8e 37 74 32 ca e9 b1
     70 b7 ab 0c d7 c4 56 42 26 07 98 60 d9 b6 b9 11 40
     80 ec 20 8c bd a0 c9 84 04 49 23 f1 4f 50 1f 13 dc
     90 d8 c0 9e 57 e3 c3 7b 65 3b 02 8f 3e e8 25 92 e5
     a0 15 dd fd 17 a9 bf d4 9a 7e c5 39 67 fe 76 9d 43
     b0 a7 e1 d0 f5 68 f2 1b 34 70 05 a3 8a d5 79 86 a8
     c0 30 c6 51 4b 1e a6 27 f6 35 d2 6e 24 16 82 5f da
     d0 e6 75 a2 ef 2c b2 1c 9f 5d 6f 80 0a 72 44 9b 6c
     e0 90 0b 5b 33 7d 5a 52 f3 61 a1 f7 b0 d6 3f 7c 6d
     f0 ed 14 e0 a5 3d 22 b3 f8 89 de 71 1a af ba b5 81

Lee, et al. Informational [Page 7] RFC 5794 The ARIA Encryption Algorithm March 2010

    SB3:
        0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
     00 52 09 6a d5 30 36 a5 38 bf 40 a3 9e 81 f3 d7 fb
     10 7c e3 39 82 9b 2f ff 87 34 8e 43 44 c4 de e9 cb
     20 54 7b 94 32 a6 c2 23 3d ee 4c 95 0b 42 fa c3 4e
     30 08 2e a1 66 28 d9 24 b2 76 5b a2 49 6d 8b d1 25
     40 72 f8 f6 64 86 68 98 16 d4 a4 5c cc 5d 65 b6 92
     50 6c 70 48 50 fd ed b9 da 5e 15 46 57 a7 8d 9d 84
     60 90 d8 ab 00 8c bc d3 0a f7 e4 58 05 b8 b3 45 06
     70 d0 2c 1e 8f ca 3f 0f 02 c1 af bd 03 01 13 8a 6b
     80 3a 91 11 41 4f 67 dc ea 97 f2 cf ce f0 b4 e6 73
     90 96 ac 74 22 e7 ad 35 85 e2 f9 37 e8 1c 75 df 6e
     a0 47 f1 1a 71 1d 29 c5 89 6f b7 62 0e aa 18 be 1b
     b0 fc 56 3e 4b c6 d2 79 20 9a db c0 fe 78 cd 5a f4
     c0 1f dd a8 33 88 07 c7 31 b1 12 10 59 27 80 ec 5f
     d0 60 51 7f a9 19 b5 4a 0d 2d e5 7a 9f 93 c9 9c ef
     e0 a0 e0 3b 4d ae 2a f5 b0 c8 eb bb 3c 83 53 99 61
     f0 17 2b 04 7e ba 77 d6 26 e1 69 14 63 55 21 0c 7d
    SB4:
        0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
     00 30 68 99 1b 87 b9 21 78 50 39 db e1 72  9 62 3c
     10 3e 7e 5e 8e f1 a0 cc a3 2a 1d fb b6 d6 20 c4 8d
     20 81 65 f5 89 cb 9d 77 c6 57 43 56 17 d4 40 1a 4d
     30 c0 63 6c e3 b7 c8 64 6a 53 aa 38 98 0c f4 9b ed
     40 7f 22 76 af dd 3a 0b 58 67 88 06 c3 35 0d 01 8b
     50 8c c2 e6 5f 02 24 75 93 66 1e e5 e2 54 d8 10 ce
     60 7a e8 08 2c 12 97 32 ab b4 27 0a 23 df ef ca d9
     70 b8 fa dc 31 6b d1 ad 19 49 bd 51 96 ee e4 a8 41
     80 da ff cd 55 86 36 be 61 52 f8 bb 0e 82 48 69 9a
     90 e0 47 9e 5c 04 4b 34 15 79 26 a7 de 29 ae 92 d7
     a0 84 e9 d2 ba 5d f3 c5 b0 bf a4 3b 71 44 46 2b fc
     b0 eb 6f d5 f6 14 fe 7c 70 5a 7d fd 2f 18 83 16 a5
     c0 91 1f 05 95 74 a9 c1 5b 4a 85 6d 13 07 4f 4e 45
     d0 b2 0f c9 1c a6 bc ec 73 90 7b cf 59 8f a1 f9 2d
     e0 f2 b1 00 94 37 9f d0 2e 9c 6e 28 3f 80 f0 3d d3
     f0 25 8a b5 e7 42 b3 c7 ea f7 4c 11 33 03 a2 ac 60
 For example, SB1(0x23) = 0x26 and SB4(0xef) = 0xd3.  Note that SB3
 and SB4 are the inverse functions of SB1 and SB2, respectively, and
 accordingly SL2 is the inverse of SL1.

2.4.3. Diffusion Layer

 Diffusion layer A is an algorithm that takes a 16-byte string x0 ||
 x1 || ... || x15 as input and outputs a 16-byte string
 y0 || y1 ||...|| y15 by the following equations.

Lee, et al. Informational [Page 8] RFC 5794 The ARIA Encryption Algorithm March 2010

    y0  = x3 ^ x4 ^ x6 ^ x8  ^ x9  ^ x13 ^ x14,
    y1  = x2 ^ x5 ^ x7 ^ x8  ^ x9  ^ x12 ^ x15,
    y2  = x1 ^ x4 ^ x6 ^ x10 ^ x11 ^ x12 ^ x15,
    y3  = x0 ^ x5 ^ x7 ^ x10 ^ x11 ^ x13 ^ x14,
    y4  = x0 ^ x2 ^ x5 ^ x8  ^ x11 ^ x14 ^ x15,
    y5  = x1 ^ x3 ^ x4 ^ x9  ^ x10 ^ x14 ^ x15,
    y6  = x0 ^ x2 ^ x7 ^ x9  ^ x10 ^ x12 ^ x13,
    y7  = x1 ^ x3 ^ x6 ^ x8  ^ x11 ^ x12 ^ x13,
    y8  = x0 ^ x1 ^ x4 ^ x7  ^ x10 ^ x13 ^ x15,
    y9  = x0 ^ x1 ^ x5 ^ x6  ^ x11 ^ x12 ^ x14,
    y10 = x2 ^ x3 ^ x5 ^ x6  ^ x8  ^ x13 ^ x15,
    y11 = x2 ^ x3 ^ x4 ^ x7  ^ x9  ^ x12 ^ x14,
    y12 = x1 ^ x2 ^ x6 ^ x7  ^ x9  ^ x11 ^ x12,
    y13 = x0 ^ x3 ^ x6 ^ x7  ^ x8  ^ x10 ^ x13,
    y14 = x0 ^ x3 ^ x4 ^ x5  ^ x9  ^ x11 ^ x14,
    y15 = x1 ^ x2 ^ x4 ^ x5  ^ x8  ^ x10 ^ x15.
 Note that A is an involution.  That is, for any 16-byte input string
 x, x = A(A(x)) holds.

3. Security Considerations

 ARIA is designed to be resistant to all known attacks on block
 ciphers [ARIA03].  Its security was analyzed by the COSIC group of
 K.U.Leuven in Belgium [ARIAEVAL] and no security flaw has been found.

4. Informative References

 [ARIAEVAL] Biryukov, A., et al., "Security and Performance Analysis
            of ARIA", K.U.Leuven (2003), available at
            http://www.cosic.esat.kuleuven.be/publications/
            article-500.pdf
 [ARIA03]   Kwon, D., et al., "New Block Cipher: ARIA", ICISC 2003,
            pp. 432-445.
 [ARIAKS]   Korean Agency for Technology and Standards (KATS), "128
            bit block encryption algorithm ARIA", KS X 1213:2004,
            December 2004 (In Korean).
 [ARIAPKCS] RSA Laboratories, PKCS #11 v2.20 Amendment 3 Revision 1:
            Additional PKCS #11 Mechanisms, January 2007.
 [X.680]    ITU-T Recommendation X.680 (2002) | ISO/IEC 8824-1:2002,
            Information technology - Abstract Syntax Notation One
            (ASN.1): Specification of basic notation.

Lee, et al. Informational [Page 9] RFC 5794 The ARIA Encryption Algorithm March 2010

 [X.681]    ITU-T Recommendation X.681 (2002) | ISO/IEC 8824-2:2002,
            Information technology - Abstract Syntax Notation One
            (ASN.1): Information object specification.
 [X.682]    ITU-T Recommendation X.682 (2002) | ISO/IEC 8824-3:2002,
            Information technology - Abstract Syntax Notation One
            (ASN.1): Constraint specification.
 [X.683]    ITU-T Recommendation X.683 (2002) | ISO/IEC 8824-4:2002,
            Information technology - Abstract Syntax Notation One
            (ASN.1): Parameterization of ASN.1 specifications.

Lee, et al. Informational [Page 10] RFC 5794 The ARIA Encryption Algorithm March 2010

Appendix A. Example Data of ARIA

 Here are test data for ARIA in hexadecimal form.

A.1. 128-Bit Key

  1. Key : 000102030405060708090a0b0c0d0e0f
  2. Plaintext : 00112233445566778899aabbccddeeff
  3. Ciphertext: d718fbd6ab644c739da95f3be6451778
  1. Round key generators

W0: 000102030405060708090a0b0c0d0e0f

    W1: 2afbea741e1746dd55c63ba1afcea0a5
    W2: 7c8578018bb127e02dfe4e78c288e33c
    W3: 6785b52b74da46bf181054082763ff6d
  1. Encryption round keys

e1: d415a75c794b85c5e0d2a0b3cb793bf6

    e2:  369c65e4b11777ab713a3e1e6601b8f4
    e3:  0368d4f13d14497b6529ad7ac809e7d0
    e4:  c644552b549a263fb8d0b50906229eec
    e5:  5f9c434951f2d2ef342787b1a781794c
    e6:  afea2c0ce71db6de42a47461f4323c54
    e7:  324286db44ba4db6c44ac306f2a84b2c
    e8:  7f9fa93574d842b9101a58063771eb7b
    e9:  aab9c57731fcd213ad5677458fcfe6d4
    e10: 2f4423bb06465abada5694a19eb88459
    e11: 9f8772808f5d580d810ef8ddac13abeb
    e12: 8684946a155be77ef810744847e35fad
    e13: 0f0aa16daee61bd7dfee5a599970fb35
  1. Intermediate round values

P1: 7fc7f12befd0a0791de87fa96b469f52

    P2:  ac8de17e49f7c5117618993162b189e9
    P3:  c3e8d59ec2e62d5249ca2741653cb7dd
    P4:  5d4aebb165e141ff759f669e1e85cc45
    P5:  7806e469f68874c5004b5f4a046bbcfa
    P6:  110f93c9a630cdd51f97d2202413345a
    P7:  e054428ef088fef97928241cd3be499e
    P8:  5734f38ea1ca3ddd102e71f95e1d5f97
    P9:  4903325be3e500cccd52fba4354a39ae
    P10: cb8c508e2c4f87880639dc896d25ec9d
    P11: e7e0d2457ed73d23d481424095afdca0

Lee, et al. Informational [Page 11] RFC 5794 The ARIA Encryption Algorithm March 2010

A.2. 192-Bit Key

 Key       : 000102030405060708090a0b0c0d0e0f
             1011121314151617
 Plaintext : 00112233445566778899aabbccddeeff
 Ciphertext: 26449c1805dbe7aa25a468ce263a9e79

A.3. 256-Bit Key

 Key       : 000102030405060708090a0b0c0d0e0f
             101112131415161718191a1b1c1d1e1f
 Plaintext : 00112233445566778899aabbccddeeff
 Ciphertext: f92bd7c79fb72e2f2b8f80c1972d24fc

Appendix B. OIDs

 Here is an ASN.1 module conforming to the 2002 version of ASN.1
 [X.680][X.681][X.682][X.683].
 AriaModesOfOperation {
 iso(1) member-body(2) korea(400) nsri(200046) algorithm (1)
 symmetric-encryption-algorithm(1) asn1-module(0) alg-oids(0) }
 DEFINITIONS IMPLICIT TAGS ::=
 BEGIN
 OID ::= OBJECT IDENTIFIER
  1. - Synonyms –
 id-algorithm OID ::=  { iso(1) member-body(2) korea(410) nsri(200046)
 algorithm(1)}
 id-sea OID ::= { id-algorithm symmetric-encryption-algorithm(1)}
 id-pad OID ::= { id-algorithm pad(2)}
 id-pad-null  RELATIVE-OID ::= {0} -- no padding algorithms identified
 id-pad-1     RELATIVE-OID ::= {1}
 -- padding method 2 of ISO/IEC 9797-1:1999
  1. - confidentiality modes:
  2. - ECB, CBC, CFB, OFB, CTR
 id-aria128-ecb OID ::= { id-sea aria128-ecb(1)}
 id-aria128-cbc OID ::= { id-sea aria128-cbc(2)}
 id-aria128-cfb OID ::= { id-sea aria128-cfb(3)}
 id-aria128-ofb OID ::= { id-sea aria128-ofb(4)}
 id-aria128-ctr OID ::= { id-sea aria128-ctr(5)}

Lee, et al. Informational [Page 12] RFC 5794 The ARIA Encryption Algorithm March 2010

 id-aria192-ecb OID ::= { id-sea aria192-ecb(6)}
 id-aria192-cbc OID ::= { id-sea aria192-cbc(7)}
 id-aria192-cfb OID ::= { id-sea aria192-cfb(8)}
 id-aria192-ofb OID ::= { id-sea aria192-ofb(9)}
 id-aria192-ctr OID ::= { id-sea aria192-ctr(10)}
 id-aria256-ecb OID ::= { id-sea aria256-ecb(11)}
 id-aria256-cbc OID ::= { id-sea aria256-cbc(12)}
 id-aria256-cfb OID ::= { id-sea aria256-cfb(13)}
 id-aria256-ofb OID ::= { id-sea aria256-ofb(14)}
 id-aria256-ctr OID ::= { id-sea aria256-ctr(15)}
  1. - authentication modes: CMAC
 id-aria128-cmac OID ::= { id-sea aria128-cmac(21)}
 id-aria192-cmac OID ::= { id-sea aria192-cmac(22)}
 id-aria256-cmac OID ::= { id-sea aria256-cmac(23)}
  1. - modes for both confidentiality and authentication
  2. - OCB 2.0, GCM, CCM, Key Wrap
 id-aria128-ocb2 OID ::= { id-sea aria128-ocb2(31)}
 id-aria192-ocb2 OID ::= { id-sea aria192-ocb2(32)}
 id-aria256-ocb2 OID ::= { id-sea aria256-ocb2(33)}
 id-aria128-gcm OID ::= { id-sea aria128-gcm(34)}
 id-aria192-gcm OID ::= { id-sea aria192-gcm(35)}
 id-aria256-gcm OID ::= { id-sea aria256-gcm(36)}
 id-aria128-ccm OID ::= { id-sea aria128-ccm(37)}
 id-aria192-ccm OID ::= { id-sea aria192-ccm(38)}
 id-aria256-ccm OID ::= { id-sea aria256-ccm(39)}
 id-aria128-kw OID ::= { id-sea aria128-kw(40)}
 id-aria192-kw OID ::= { id-sea aria192-kw(41)}
 id-aria256-kw OID ::= { id-sea aria256-kw(42)}
  1. - ARIA Key-Wrap with Padding Algorithm (AES version: RFC 5649)
 id-aria128-kwp OID ::= { id-sea aria128-kwp(43)}
 id-aria192-kwp OID ::= { id-sea aria192-kwp(44)}
 id-aria256-kwp OID ::= { id-sea aria256-kwp(45)}

Lee, et al. Informational [Page 13] RFC 5794 The ARIA Encryption Algorithm March 2010

 AriaModeOfOperation ::= AlgorithmIdentifier
 { {AriaModeOfOperationAlgorithms} }
 AriaModeOfOperationAlgorithms ALGORITHM ::= {
 aria128ecb  |aria128cbc  |aria128cfb  |aria128ofb  |aria128ctr  |
 aria192ecb  |aria192cbc  |aria192cfb  |aria192ofb  |aria192ctr  |
 aria256ecb  |aria256cbc  |aria256cfb  |aria256ofb  |aria256ctr  |
 aria128cmac |aria192cmac |aria256cmac |
 aria128ocb2 |aria192ocb2 |aria256ocb2 |
 aria128gcm  |aria192gcm  |aria256gcm  |
 aria128ccm  |aria192ccm  |aria256ccm  |
 aria128kw   |aria192kw   |aria256kw   |
 aria128kwp  |aria192kwp  |aria256kwp ,
 ... --Extensible
 }
 aria128ecb  ALGORITHM ::=
 { OID id-aria128-ecb PARAMS AriaEcbParameters }
 aria128cbc  ALGORITHM ::=
 { OID id-aria128-cbc PARAMS AriaCbcParameters }
 aria128cfb  ALGORITHM ::=
 { OID id-aria128-cfb PARAMS AriaCfbParameters }
 aria128ofb  ALGORITHM ::=
 { OID id-aria128-ofb PARAMS AriaOfbParameters }
 aria128ctr  ALGORITHM ::=
 { OID id-aria128-ctr PARAMS AriaCtrParameters }
 aria192ecb  ALGORITHM ::=
 { OID id-aria192-ecb PARAMS AriaEcbParameters }
 aria192cbc  ALGORITHM ::=
 { OID id-aria192-cbc PARAMS AriaCbcParameters }
 aria192cfb  ALGORITHM ::=
 { OID id-aria192-cfb PARAMS AriaCfbParameters }
 aria192ofb  ALGORITHM ::=
 { OID id-aria192-ofb PARAMS AriaOfbParameters }
 aria192ctr  ALGORITHM ::=
 { OID id-aria192-ctr PARAMS AriaCtrParameters }

Lee, et al. Informational [Page 14] RFC 5794 The ARIA Encryption Algorithm March 2010

 aria256ecb  ALGORITHM ::=
 { OID id-aria256-ecb PARAMS AriaEcbParameters }
 aria256cbc  ALGORITHM ::=
 { OID id-aria256-cbc PARAMS AriaCbcParameters }
 aria256cfb  ALGORITHM ::=
 { OID id-aria256-cfb PARAMS AriaCfbParameters }
 aria256ofb  ALGORITHM ::=
 { OID id-aria256-ofb PARAMS AriaOfbParameters }
 aria256ctr  ALGORITHM ::=
 { OID id-aria256-ctr PARAMS AriaCtrParameters }
 aria128cmac ALGORITHM ::=
 { OID id-aria128-cmac PARAMS AriaCmacParameters }
 aria192cmac ALGORITHM ::=
 { OID id-aria192-cmac PARAMS AriaCmacParameters }
 aria256cmac ALGORITHM ::=
 { OID id-aria256-cmac PARAMS AriaCmacParameters }
 aria128ocb2 ALGORITHM ::=
 { OID id-aria128-ocb2 PARAMS AriaOcb2Parameters }
 aria192ocb2 ALGORITHM ::=
 { OID id-aria192-ocb2 PARAMS AriaOcb2Parameters }
 aria256ocb2 ALGORITHM ::=
 { OID id-aria256-ocb2 PARAMS AriaOcb2Parameters }
 aria128gcm  ALGORITHM ::=
 { OID id-aria128-gcm PARAMS AriaGcmParameters }
 aria192gcm  ALGORITHM ::=
 { OID id-aria192-gcm PARAMS AriaGcmParameters }
 aria256gcm  ALGORITHM ::=
 { OID id-aria256-gcm PARAMS AriaGcmParameters }
 aria128ccm  ALGORITHM ::=
 { OID id-aria128-ccm PARAMS AriaCcmParameters }
 aria192ccm  ALGORITHM ::=
 { OID id-aria192-ccm PARAMS AriaCcmParameters }
 aria256ccm  ALGORITHM ::=
 { OID id-aria256-ccm PARAMS AriaCcmParameters }
 aria128kw   ALGORITHM ::= { OID id-aria128-kw }
 aria192kw   ALGORITHM ::= { OID id-aria192-kw }
 aria256kw   ALGORITHM ::= { OID id-aria256-kw }
 aria128kwp   ALGORITHM ::= { OID id-aria128-kwp }
 aria192kwp   ALGORITHM ::= { OID id-aria192-kwp }
 aria256kwp   ALGORITHM ::= { OID id-aria256-kwp }

Lee, et al. Informational [Page 15] RFC 5794 The ARIA Encryption Algorithm March 2010

 AriaPadAlgo ::= CHOICE {
     specifiedPadAlgo   RELATIVE-OID,
     generalPadAlgo     OID
 }
 AriaEcbParameters ::= SEQUENCE {
     padAlgo   AriaPadAlgo  DEFAULT specifiedPadAlgo:id-pad-null
 }
 AriaCbcParameters ::= SEQUENCE {
     m         INTEGER       DEFAULT 1,
     -- number of stored ciphertext blocks
     padAlgo   AriaPadAlgo   DEFAULT specifiedPadAlgo:id-pad-1
 }
 AriaCfbParameters ::= SEQUENCE {
     r         INTEGER,
     -- bit-length of feedback buffer, 128<=r<=128*1024
     k         INTEGER,
     -- bit-length of feedback variable, 1<=k<=128
     j         INTEGER,
     -- bit-length of plaintext/ciphertext block, 1<=j<=k
     padAlgo   AriaPadAlgo  DEFAULT specifiedPadAlgo:id-pad-null
 }
 AriaOfbParameters ::= SEQUENCE {
     j         INTEGER,
     -- bit-length of plaintext/ciphertext block, 1<=j<=128
     padAlgo   AriaPadAlgo  DEFAULT specifiedPadAlgo:id-pad-null
 }
 AriaCtrParameters ::= SEQUENCE {
     j         INTEGER,
     -- bit-length of plaintext/ciphertext block, 1<=j<=128
     padAlgo   AriaPadAlgo  DEFAULT specifiedPadAlgo:id-pad-null
 }
 AriaCmacParameters ::= INTEGER -- bit-length of authentication tag
 AriaOcb2Parameters ::= INTEGER -- bit-length of authentication tag
 AriaGcmParameters  ::= SEQUENCE {
     s       INTEGER,   -- bit-length of starting variable
     t       INTEGER    -- bit-length of authentication tag
 }

Lee, et al. Informational [Page 16] RFC 5794 The ARIA Encryption Algorithm March 2010

 AriaCcmParameters  ::= SEQUENCE {
     w      INTEGER (2|3|4|5|6|7|8),
     -- length of message length field in octets
     t      INTEGER (32|48|64|80|96|112|128)
     -- bit-length of authentication tag
 }
 ALGORITHM ::= CLASS {
     &id    OBJECT IDENTIFIER UNIQUE,
     &Type  OPTIONAL
 }
 WITH SYNTAX { OID &id  [PARAMS &Type] }
 AlgorithmIdentifier { ALGORITHM:AlgoSet } ::= SEQUENCE {
     algorithm    ALGORITHM.&id( {AlgoSet} ),
     parameters ALGORITHM.&Type( {AlgoSet}{@algorithm} ) OPTIONAL
 }
 END

Lee, et al. Informational [Page 17] RFC 5794 The ARIA Encryption Algorithm March 2010

Authors' Addresses

 Jungkeun Lee
 National Security Research Institute
 P.O.Box 1, Yuseong, Daejeon, 305-350, Korea
 EMail: jklee@ensec.re.kr
 Jooyoung Lee
 National Security Research Institute
 P.O.Box 1, Yuseong, Daejeon, 305-350, Korea
 EMail: jlee05@ensec.re.kr
 Jaeheon Kim
 National Security Research Institute
 P.O.Box 1, Yuseong, Daejeon, 305-350, Korea
 EMail: jaeheon@ensec.re.kr
 Daesung Kwon
 National Security Research Institute
 P.O.Box 1, Yuseong, Daejeon, 305-350, Korea
 EMail: ds_kwon@ensec.re.kr
 Choonsoo Kim
 National Security Research Institute
 P.O.Box 1, Yuseong, Daejeon, 305-350, Korea
 EMail: jbr@ensec.re.kr

Lee, et al. Informational [Page 18]

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