RC4 test vectors: Test Vectors for the Stream Cipher RC4

Internet Engineering Task Force (IETF)                   J. Strombergson
Request for Comments: 6229                            SecWorks Sweden AB
Category: Informational                                     S. Josefsson
ISSN: 2070-1721                           Simon Josefsson Datakonsult AB
                                                                May 2011


                 Test Vectors for the Stream Cipher RC4

Abstract

   This document contains test vectors for the stream cipher RC4.

Status of This Memo

   This document is not an Internet Standards Track specification; it is
   published for informational purposes.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Not all documents
   approved by the IESG are 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/rfc6229.

Copyright Notice

   Copyright (c) 2011 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.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Test Vectors for RC4 . . . . . . . . . . . . . . . . . . . . .  4
   3.  Security Considerations  . . . . . . . . . . . . . . . . . . . 11
   4.  Copying Conditions . . . . . . . . . . . . . . . . . . . . . . 11
   5.  References . . . . . . . . . . . . . . . . . . . . . . . . . . 11
     5.1.  Normative References . . . . . . . . . . . . . . . . . . . 11
     5.2.  Informative References . . . . . . . . . . . . . . . . . . 11

1.  Introduction

   The RC4 [RC4] algorithm is a widely used stream cipher.  Test vectors
   for algorithms are useful for implementers.  The RC4 cipher can use
   different key lengths.  Advances in crypto-analysis [FMcG] [MANTIN01]
   [MIRONOV] [MANTIN05] suggest that initial parts of the stream output
   need to be discarded.  This document contains several test vectors
   for different key lengths and for different offsets in the stream.

   Motivation for this document arose from the implementation of
   [RFC4345].

   The test vectors provided in this document have been collected by
   generating RC4 keystream output from three separate implementations
   and comparing the streams.  The RC4 implementations used are
   Libgcrypt 1.4.4 [LIBGCRYPT], Nettle 2.0 [NETTLE], and a custom
   implementation.

   The document contains test vectors for two different keys:

   Key 1:  The key byte index (starting on one), that is: 0x01, 0x02,
      0x03, 0x04,...

   Key 2:  Generated by hashing the string "Internet Engineering Task
      Force" with the SHA-256 [SHS] [RFC4634] hash function, using the
      following command:

      $ echo -n "Internet Engineering Task Force" | sha256sum
      1ada31d5cf688221c109163908ebe51debb46227c6cc8b37641910833222772a

   The generated string has also been verified using the SHA-256 hash
   function implementation in OpenSSL (versions 0.9.8l and 1.0.0a)
   [OPENSSL].

   The digest that is generated is then truncated to the appropriate
   length, keeping the Least Significant Bit (LSB) part of the digest as
   the key.

   The key lengths used in this document are 40, 56, 64, 80, 128, 192,
   and 256 bits, respectively.  The stream offsets used in this document
   are 0, 256, 512, 768, 1024, 1536, 2048, 3072, and 4096 bytes,
   respectively.  Offset 1536 corresponds to recommendations in
   [RFC4345].  The offsets 768 and 3072 correspond to recommendations in
   [SANS].

2.  Test Vectors for RC4

 Key length: 40 bits.
 key: 0x0102030405

 DEC    0 HEX    0:  b2 39 63 05  f0 3d c0 27   cc c3 52 4a  0a 11 18 a8
 DEC   16 HEX   10:  69 82 94 4f  18 fc 82 d5   89 c4 03 a4  7a 0d 09 19
 DEC  240 HEX   f0:  28 cb 11 32  c9 6c e2 86   42 1d ca ad  b8 b6 9e ae
 DEC  256 HEX  100:  1c fc f6 2b  03 ed db 64   1d 77 df cf  7f 8d 8c 93
 DEC  496 HEX  1f0:  42 b7 d0 cd  d9 18 a8 a3   3d d5 17 81  c8 1f 40 41
 DEC  512 HEX  200:  64 59 84 44  32 a7 da 92   3c fb 3e b4  98 06 61 f6
 DEC  752 HEX  2f0:  ec 10 32 7b  de 2b ee fd   18 f9 27 76  80 45 7e 22
 DEC  768 HEX  300:  eb 62 63 8d  4f 0b a1 fe   9f ca 20 e0  5b f8 ff 2b
 DEC 1008 HEX  3f0:  45 12 90 48  e6 a0 ed 0b   56 b4 90 33  8f 07 8d a5
 DEC 1024 HEX  400:  30 ab bc c7  c2 0b 01 60   9f 23 ee 2d  5f 6b b7 df
 DEC 1520 HEX  5f0:  32 94 f7 44  d8 f9 79 05   07 e7 0f 62  e5 bb ce ea
 DEC 1536 HEX  600:  d8 72 9d b4  18 82 25 9b   ee 4f 82 53  25 f5 a1 30
 DEC 2032 HEX  7f0:  1e b1 4a 0c  13 b3 bf 47   fa 2a 0b a9  3a d4 5b 8b
 DEC 2048 HEX  800:  cc 58 2f 8b  a9 f2 65 e2   b1 be 91 12  e9 75 d2 d7
 DEC 3056 HEX  bf0:  f2 e3 0f 9b  d1 02 ec bf   75 aa ad e9  bc 35 c4 3c
 DEC 3072 HEX  c00:  ec 0e 11 c4  79 dc 32 9d   c8 da 79 68  fe 96 56 81
 DEC 4080 HEX  ff0:  06 83 26 a2  11 84 16 d2   1f 9d 04 b2  cd 1c a0 50
 DEC 4096 HEX 1000:  ff 25 b5 89  95 99 67 07   e5 1f bd f0  8b 34 d8 75
 Key length: 56 bits.
 key: 0x01020304050607

 DEC    0 HEX    0:  29 3f 02 d4  7f 37 c9 b6   33 f2 af 52  85 fe b4 6b
 DEC   16 HEX   10:  e6 20 f1 39  0d 19 bd 84   e2 e0 fd 75  20 31 af c1
 DEC  240 HEX   f0:  91 4f 02 53  1c 92 18 81   0d f6 0f 67  e3 38 15 4c
 DEC  256 HEX  100:  d0 fd b5 83  07 3c e8 5a   b8 39 17 74  0e c0 11 d5
 DEC  496 HEX  1f0:  75 f8 14 11  e8 71 cf fa   70 b9 0c 74  c5 92 e4 54
 DEC  512 HEX  200:  0b b8 72 02  93 8d ad 60   9e 87 a5 a1  b0 79 e5 e4
 DEC  752 HEX  2f0:  c2 91 12 46  b6 12 e7 e7   b9 03 df ed  a1 da d8 66
 DEC  768 HEX  300:  32 82 8f 91  50 2b 62 91   36 8d e8 08  1d e3 6f c2
 DEC 1008 HEX  3f0:  f3 b9 a7 e3  b2 97 bf 9a   d8 04 51 2f  90 63 ef f1
 DEC 1024 HEX  400:  8e cb 67 a9  ba 1f 55 a5   a0 67 e2 b0  26 a3 67 6f
 DEC 1520 HEX  5f0:  d2 aa 90 2b  d4 2d 0d 7c   fd 34 0c d4  58 10 52 9f
 DEC 1536 HEX  600:  78 b2 72 c9  6e 42 ea b4   c6 0b d9 14  e3 9d 06 e3
 DEC 2032 HEX  7f0:  f4 33 2f d3  1a 07 93 96   ee 3c ee 3f  2a 4f f0 49
 DEC 2048 HEX  800:  05 45 97 81  d4 1f da 7f   30 c1 be 7e  12 46 c6 23
 DEC 3056 HEX  bf0:  ad fd 38 68  b8 e5 14 85   d5 e6 10 01  7e 3d d6 09
 DEC 3072 HEX  c00:  ad 26 58 1c  0c 5b e4 5f   4c ea 01 db  2f 38 05 d5
 DEC 4080 HEX  ff0:  f3 17 2c ef  fc 3b 3d 99   7c 85 cc d5  af 1a 95 0c
 DEC 4096 HEX 1000:  e7 4b 0b 97  31 22 7f d3   7c 0e c0 8a  47 dd d8 b8

 Key length: 64 bits.
 key: 0x0102030405060708

 DEC    0 HEX    0:  97 ab 8a 1b  f0 af b9 61   32 f2 f6 72  58 da 15 a8
 DEC   16 HEX   10:  82 63 ef db  45 c4 a1 86   84 ef 87 e6  b1 9e 5b 09
 DEC  240 HEX   f0:  96 36 eb c9  84 19 26 f4   f7 d1 f3 62  bd df 6e 18
 DEC  256 HEX  100:  d0 a9 90 ff  2c 05 fe f5   b9 03 73 c9  ff 4b 87 0a
 DEC  496 HEX  1f0:  73 23 9f 1d  b7 f4 1d 80   b6 43 c0 c5  25 18 ec 63
 DEC  512 HEX  200:  16 3b 31 99  23 a6 bd b4   52 7c 62 61  26 70 3c 0f
 DEC  752 HEX  2f0:  49 d6 c8 af  0f 97 14 4a   87 df 21 d9  14 72 f9 66
 DEC  768 HEX  300:  44 17 3a 10  3b 66 16 c5   d5 ad 1c ee  40 c8 63 d0
 DEC 1008 HEX  3f0:  27 3c 9c 4b  27 f3 22 e4   e7 16 ef 53  a4 7d e7 a4
 DEC 1024 HEX  400:  c6 d0 e7 b2  26 25 9f a9   02 34 90 b2  61 67 ad 1d
 DEC 1520 HEX  5f0:  1f e8 98 67  13 f0 7c 3d   9a e1 c1 63  ff 8c f9 d3
 DEC 1536 HEX  600:  83 69 e1 a9  65 61 0b e8   87 fb d0 c7  91 62 aa fb
 DEC 2032 HEX  7f0:  0a 01 27 ab  b4 44 84 b9   fb ef 5a bc  ae 1b 57 9f
 DEC 2048 HEX  800:  c2 cd ad c6  40 2e 8e e8   66 e1 f3 7b  db 47 e4 2c
 DEC 3056 HEX  bf0:  26 b5 1e a3  7d f8 e1 d6   f7 6f c3 b6  6a 74 29 b3
 DEC 3072 HEX  c00:  bc 76 83 20  5d 4f 44 3d   c1 f2 9d da  33 15 c8 7b
 DEC 4080 HEX  ff0:  d5 fa 5a 34  69 d2 9a aa   f8 3d 23 58  9d b8 c8 5b
 DEC 4096 HEX 1000:  3f b4 6e 2c  8f 0f 06 8e   dc e8 cd cd  7d fc 58 62
 Key length: 80 bits.
 key: 0x0102030405060708090a

 DEC    0 HEX    0:  ed e3 b0 46  43 e5 86 cc   90 7d c2 18  51 70 99 02
 DEC   16 HEX   10:  03 51 6b a7  8f 41 3b eb   22 3a a5 d4  d2 df 67 11
 DEC  240 HEX   f0:  3c fd 6c b5  8e e0 fd de   64 01 76 ad  00 00 04 4d
 DEC  256 HEX  100:  48 53 2b 21  fb 60 79 c9   11 4c 0f fd  9c 04 a1 ad
 DEC  496 HEX  1f0:  3e 8c ea 98  01 71 09 97   90 84 b1 ef  92 f9 9d 86
 DEC  512 HEX  200:  e2 0f b4 9b  db 33 7e e4   8b 8d 8d c0  f4 af ef fe
 DEC  752 HEX  2f0:  5c 25 21 ea  cd 79 66 f1   5e 05 65 44  be a0 d3 15
 DEC  768 HEX  300:  e0 67 a7 03  19 31 a2 46   a6 c3 87 5d  2f 67 8a cb
 DEC 1008 HEX  3f0:  a6 4f 70 af  88 ae 56 b6   f8 75 81 c0  e2 3e 6b 08
 DEC 1024 HEX  400:  f4 49 03 1d  e3 12 81 4e   c6 f3 19 29  1f 4a 05 16
 DEC 1520 HEX  5f0:  bd ae 85 92  4b 3c b1 d0   a2 e3 3a 30  c6 d7 95 99
 DEC 1536 HEX  600:  8a 0f ed db  ac 86 5a 09   bc d1 27 fb  56 2e d6 0a
 DEC 2032 HEX  7f0:  b5 5a 0a 5b  51 a1 2a 8b   e3 48 99 c3  e0 47 51 1a
 DEC 2048 HEX  800:  d9 a0 9c ea  3c e7 5f e3   96 98 07 03  17 a7 13 39
 DEC 3056 HEX  bf0:  55 22 25 ed  11 77 f4 45   84 ac 8c fa  6c 4e b5 fc
 DEC 3072 HEX  c00:  7e 82 cb ab  fc 95 38 1b   08 09 98 44  21 29 c2 f8
 DEC 4080 HEX  ff0:  1f 13 5e d1  4c e6 0a 91   36 9d 23 22  be f2 5e 3c
 DEC 4096 HEX 1000:  08 b6 be 45  12 4a 43 e2   eb 77 95 3f  84 dc 85 53

 Key length: 128 bits.
 key: 0x0102030405060708090a0b0c0d0e0f10

 DEC    0 HEX    0:  9a c7 cc 9a  60 9d 1e f7   b2 93 28 99  cd e4 1b 97
 DEC   16 HEX   10:  52 48 c4 95  90 14 12 6a   6e 8a 84 f1  1d 1a 9e 1c
 DEC  240 HEX   f0:  06 59 02 e4  b6 20 f6 cc   36 c8 58 9f  66 43 2f 2b
 DEC  256 HEX  100:  d3 9d 56 6b  c6 bc e3 01   07 68 15 15  49 f3 87 3f
 DEC  496 HEX  1f0:  b6 d1 e6 c4  a5 e4 77 1c   ad 79 53 8d  f2 95 fb 11
 DEC  512 HEX  200:  c6 8c 1d 5c  55 9a 97 41   23 df 1d bc  52 a4 3b 89
 DEC  752 HEX  2f0:  c5 ec f8 8d  e8 97 fd 57   fe d3 01 70  1b 82 a2 59
 DEC  768 HEX  300:  ec cb e1 3d  e1 fc c9 1c   11 a0 b2 6c  0b c8 fa 4d
 DEC 1008 HEX  3f0:  e7 a7 25 74  f8 78 2a e2   6a ab cf 9e  bc d6 60 65
 DEC 1024 HEX  400:  bd f0 32 4e  60 83 dc c6   d3 ce dd 3c  a8 c5 3c 16
 DEC 1520 HEX  5f0:  b4 01 10 c4  19 0b 56 22   a9 61 16 b0  01 7e d2 97
 DEC 1536 HEX  600:  ff a0 b5 14  64 7e c0 4f   63 06 b8 92  ae 66 11 81
 DEC 2032 HEX  7f0:  d0 3d 1b c0  3c d3 3d 70   df f9 fa 5d  71 96 3e bd
 DEC 2048 HEX  800:  8a 44 12 64  11 ea a7 8b   d5 1e 8d 87  a8 87 9b f5
 DEC 3056 HEX  bf0:  fa be b7 60  28 ad e2 d0   e4 87 22 e4  6c 46 15 a3
 DEC 3072 HEX  c00:  c0 5d 88 ab  d5 03 57 f9   35 a6 3c 59  ee 53 76 23
 DEC 4080 HEX  ff0:  ff 38 26 5c  16 42 c1 ab   e8 d3 c2 fe  5e 57 2b f8
 DEC 4096 HEX 1000:  a3 6a 4c 30  1a e8 ac 13   61 0c cb c1  22 56 ca cc
 Key length: 192 bits.
 key: 0x0102030405060708090a0b0c0d0e0f101112131415161718

 DEC    0 HEX    0:  05 95 e5 7f  e5 f0 bb 3c   70 6e da c8  a4 b2 db 11
 DEC   16 HEX   10:  df de 31 34  4a 1a f7 69   c7 4f 07 0a  ee 9e 23 26
 DEC  240 HEX   f0:  b0 6b 9b 1e  19 5d 13 d8   f4 a7 99 5c  45 53 ac 05
 DEC  256 HEX  100:  6b d2 37 8e  c3 41 c9 a4   2f 37 ba 79  f8 8a 32 ff
 DEC  496 HEX  1f0:  e7 0b ce 1d  f7 64 5a db   5d 2c 41 30  21 5c 35 22
 DEC  512 HEX  200:  9a 57 30 c7  fc b4 c9 af   51 ff da 89  c7 f1 ad 22
 DEC  752 HEX  2f0:  04 85 05 5f  d4 f6 f0 d9   63 ef 5a b9  a5 47 69 82
 DEC  768 HEX  300:  59 1f c6 6b  cd a1 0e 45   2b 03 d4 55  1f 6b 62 ac
 DEC 1008 HEX  3f0:  27 53 cc 83  98 8a fa 3e   16 88 a1 d3  b4 2c 9a 02
 DEC 1024 HEX  400:  93 61 0d 52  3d 1d 3f 00   62 b3 c2 a3  bb c7 c7 f0
 DEC 1520 HEX  5f0:  96 c2 48 61  0a ad ed fe   af 89 78 c0  3d e8 20 5a
 DEC 1536 HEX  600:  0e 31 7b 3d  1c 73 b9 e9   a4 68 8f 29  6d 13 3a 19
 DEC 2032 HEX  7f0:  bd f0 e6 c3  cc a5 b5 b9   d5 33 b6 9c  56 ad a1 20
 DEC 2048 HEX  800:  88 a2 18 b6  e2 ec e1 e6   24 6d 44 c7  59 d1 9b 10
 DEC 3056 HEX  bf0:  68 66 39 7e  95 c1 40 53   4f 94 26 34  21 00 6e 40
 DEC 3072 HEX  c00:  32 cb 0a 1e  95 42 c6 b3   b8 b3 98 ab  c3 b0 f1 d5
 DEC 4080 HEX  ff0:  29 a0 b8 ae  d5 4a 13 23   24 c6 2e 42  3f 54 b4 c8
 DEC 4096 HEX 1000:  3c b0 f3 b5  02 0a 98 b8   2a f9 fe 15  44 84 a1 68

 Key length: 256 bits.
 key: 0x0102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f20

 DEC    0 HEX    0:  ea a6 bd 25  88 0b f9 3d   3f 5d 1e 4c  a2 61 1d 91
 DEC   16 HEX   10:  cf a4 5c 9f  7e 71 4b 54   bd fa 80 02  7c b1 43 80
 DEC  240 HEX   f0:  11 4a e3 44  de d7 1b 35   f2 e6 0f eb  ad 72 7f d8
 DEC  256 HEX  100:  02 e1 e7 05  6b 0f 62 39   00 49 64 22  94 3e 97 b6
 DEC  496 HEX  1f0:  91 cb 93 c7  87 96 4e 10   d9 52 7d 99  9c 6f 93 6b
 DEC  512 HEX  200:  49 b1 8b 42  f8 e8 36 7c   be b5 ef 10  4b a1 c7 cd
 DEC  752 HEX  2f0:  87 08 4b 3b  a7 00 ba de   95 56 10 67  27 45 b3 74
 DEC  768 HEX  300:  e7 a7 b9 e9  ec 54 0d 5f   f4 3b db 12  79 2d 1b 35
 DEC 1008 HEX  3f0:  c7 99 b5 96  73 8f 6b 01   8c 76 c7 4b  17 59 bd 90
 DEC 1024 HEX  400:  7f ec 5b fd  9f 9b 89 ce   65 48 30 90  92 d7 e9 58
 DEC 1520 HEX  5f0:  40 f2 50 b2  6d 1f 09 6a   4a fd 4c 34  0a 58 88 15
 DEC 1536 HEX  600:  3e 34 13 5c  79 db 01 02   00 76 76 51  cf 26 30 73
 DEC 2032 HEX  7f0:  f6 56 ab cc  f8 8d d8 27   02 7b 2c e9  17 d4 64 ec
 DEC 2048 HEX  800:  18 b6 25 03  bf bc 07 7f   ba bb 98 f2  0d 98 ab 34
 DEC 3056 HEX  bf0:  8a ed 95 ee  5b 0d cb fb   ef 4e b2 1d  3a 3f 52 f9
 DEC 3072 HEX  c00:  62 5a 1a b0  0e e3 9a 53   27 34 6b dd  b0 1a 9c 18
 DEC 4080 HEX  ff0:  a1 3a 7c 79  c7 e1 19 b5   ab 02 96 ab  28 c3 00 b9
 DEC 4096 HEX 1000:  f3 e4 c0 a2  e0 2d 1d 01   f7 f0 a7 46  18 af 2b 48
 Key length: 40 bits.
 key: 0x833222772a

 DEC    0 HEX    0:  80 ad 97 bd  c9 73 df 8a   2e 87 9e 92  a4 97 ef da
 DEC   16 HEX   10:  20 f0 60 c2  f2 e5 12 65   01 d3 d4 fe  a1 0d 5f c0
 DEC  240 HEX   f0:  fa a1 48 e9  90 46 18 1f   ec 6b 20 85  f3 b2 0e d9
 DEC  256 HEX  100:  f0 da f5 ba  b3 d5 96 83   98 57 84 6f  73 fb fe 5a
 DEC  496 HEX  1f0:  1c 7e 2f c4  63 92 32 fe   29 75 84 b2  96 99 6b c8
 DEC  512 HEX  200:  3d b9 b2 49  40 6c c8 ed   ff ac 55 cc  d3 22 ba 12
 DEC  752 HEX  2f0:  e4 f9 f7 e0  06 61 54 bb   d1 25 b7 45  56 9b c8 97
 DEC  768 HEX  300:  75 d5 ef 26  2b 44 c4 1a   9c f6 3a e1  45 68 e1 b9
 DEC 1008 HEX  3f0:  6d a4 53 db  f8 1e 82 33   4a 3d 88 66  cb 50 a1 e3
 DEC 1024 HEX  400:  78 28 d0 74  11 9c ab 5c   22 b2 94 d7  a9 bf a0 bb
 DEC 1520 HEX  5f0:  ad b8 9c ea  9a 15 fb e6   17 29 5b d0  4b 8c a0 5c
 DEC 1536 HEX  600:  62 51 d8 7f  d4 aa ae 9a   7e 4a d5 c2  17 d3 f3 00
 DEC 2032 HEX  7f0:  e7 11 9b d6  dd 9b 22 af   e8 f8 95 85  43 28 81 e2
 DEC 2048 HEX  800:  78 5b 60 fd  7e c4 e9 fc   b6 54 5f 35  0d 66 0f ab
 DEC 3056 HEX  bf0:  af ec c0 37  fd b7 b0 83   8e b3 d7 0b  cd 26 83 82
 DEC 3072 HEX  c00:  db c1 a7 b4  9d 57 35 8c   c9 fa 6d 61  d7 3b 7c f0
 DEC 4080 HEX  ff0:  63 49 d1 26  a3 7a fc ba   89 79 4f 98  04 91 4f dc
 DEC 4096 HEX 1000:  bf 42 c3 01  8c 2f 7c 66   bf de 52 49  75 76 81 15

 Key length: 56 bits.
 key: 0x1910833222772a

 DEC    0 HEX    0:  bc 92 22 db  d3 27 4d 8f   c6 6d 14 cc  bd a6 69 0b
 DEC   16 HEX   10:  7a e6 27 41  0c 9a 2b e6   93 df 5b b7  48 5a 63 e3
 DEC  240 HEX   f0:  3f 09 31 aa  03 de fb 30   0f 06 01 03  82 6f 2a 64
 DEC  256 HEX  100:  be aa 9e c8  d5 9b b6 81   29 f3 02 7c  96 36 11 81
 DEC  496 HEX  1f0:  74 e0 4d b4  6d 28 64 8d   7d ee 8a 00  64 b0 6c fe
 DEC  512 HEX  200:  9b 5e 81 c6  2f e0 23 c5   5b e4 2f 87  bb f9 32 b8
 DEC  752 HEX  2f0:  ce 17 8f c1  82 6e fe cb   c1 82 f5 79  99 a4 61 40
 DEC  768 HEX  300:  8b df 55 cd  55 06 1c 06   db a6 be 11  de 4a 57 8a
 DEC 1008 HEX  3f0:  62 6f 5f 4d  ce 65 25 01   f3 08 7d 39  c9 2c c3 49
 DEC 1024 HEX  400:  42 da ac 6a  8f 9a b9 a7   fd 13 7c 60  37 82 56 82
 DEC 1520 HEX  5f0:  cc 03 fd b7  91 92 a2 07   31 2f 53 f5  d4 dc 33 d9
 DEC 1536 HEX  600:  f7 0f 14 12  2a 1c 98 a3   15 5d 28 b8  a0 a8 a4 1d
 DEC 2032 HEX  7f0:  2a 3a 30 7a  b2 70 8a 9c   00 fe 0b 42  f9 c2 d6 a1
 DEC 2048 HEX  800:  86 26 17 62  7d 22 61 ea   b0 b1 24 65  97 ca 0a e9
 DEC 3056 HEX  bf0:  55 f8 77 ce  4f 2e 1d db   bf 8e 13 e2  cd e0 fd c8
 DEC 3072 HEX  c00:  1b 15 56 cb  93 5f 17 33   37 70 5f bb  5d 50 1f c1
 DEC 4080 HEX  ff0:  ec d0 e9 66  02 be 7f 8d   50 92 81 6c  cc f2 c2 e9
 DEC 4096 HEX 1000:  02 78 81 fa  b4 99 3a 1c   26 20 24 a9  4f ff 3f 61
 Key length: 64 bits.
 key: 0x641910833222772a

 DEC    0 HEX    0:  bb f6 09 de  94 13 17 2d   07 66 0c b6  80 71 69 26
 DEC   16 HEX   10:  46 10 1a 6d  ab 43 11 5d   6c 52 2b 4f  e9 36 04 a9
 DEC  240 HEX   f0:  cb e1 ff f2  1c 96 f3 ee   f6 1e 8f e0  54 2c bd f0
 DEC  256 HEX  100:  34 79 38 bf  fa 40 09 c5   12 cf b4 03  4b 0d d1 a7
 DEC  496 HEX  1f0:  78 67 a7 86  d0 0a 71 47   90 4d 76 dd  f1 e5 20 e3
 DEC  512 HEX  200:  8d 3e 9e 1c  ae fc cc b3   fb f8 d1 8f  64 12 0b 32
 DEC  752 HEX  2f0:  94 23 37 f8  fd 76 f0 fa   e8 c5 2d 79  54 81 06 72
 DEC  768 HEX  300:  b8 54 8c 10  f5 16 67 f6   e6 0e 18 2f  a1 9b 30 f7
 DEC 1008 HEX  3f0:  02 11 c7 c6  19 0c 9e fd   12 37 c3 4c  8f 2e 06 c4
 DEC 1024 HEX  400:  bd a6 4f 65  27 6d 2a ac   b8 f9 02 12  20 3a 80 8e
 DEC 1520 HEX  5f0:  bd 38 20 f7  32 ff b5 3e   c1 93 e7 9d  33 e2 7c 73
 DEC 1536 HEX  600:  d0 16 86 16  86 19 07 d4   82 e3 6c da  c8 cf 57 49
 DEC 2032 HEX  7f0:  97 b0 f0 f2  24 b2 d2 31   71 14 80 8f  b0 3a f7 a0
 DEC 2048 HEX  800:  e5 96 16 e4  69 78 79 39   a0 63 ce ea  9a f9 56 d1
 DEC 3056 HEX  bf0:  c4 7e 0d c1  66 09 19 c1   11 01 20 8f  9e 69 aa 1f
 DEC 3072 HEX  c00:  5a e4 f1 28  96 b8 37 9a   2a ad 89 b5  b5 53 d6 b0
 DEC 4080 HEX  ff0:  6b 6b 09 8d  0c 29 3b c2   99 3d 80 bf  05 18 b6 d9
 DEC 4096 HEX 1000:  81 70 cc 3c  cd 92 a6 98   62 1b 93 9d  d3 8f e7 b9

 Key length: 80 bits.
 key: 0x8b37641910833222772a

 DEC    0 HEX    0:  ab 65 c2 6e  dd b2 87 60   0d b2 fd a1  0d 1e 60 5c
 DEC   16 HEX   10:  bb 75 90 10  c2 96 58 f2   c7 2d 93 a2  d1 6d 29 30
 DEC  240 HEX   f0:  b9 01 e8 03  6e d1 c3 83   cd 3c 4c 4d  d0 a6 ab 05
 DEC  256 HEX  100:  3d 25 ce 49  22 92 4c 55   f0 64 94 33  53 d7 8a 6c
 DEC  496 HEX  1f0:  12 c1 aa 44  bb f8 7e 75   e6 11 f6 9b  2c 38 f4 9b
 DEC  512 HEX  200:  28 f2 b3 43  4b 65 c0 98   77 47 00 44  c6 ea 17 0d
 DEC  752 HEX  2f0:  bd 9e f8 22  de 52 88 19   61 34 cf 8a  f7 83 93 04
 DEC  768 HEX  300:  67 55 9c 23  f0 52 15 84   70 a2 96 f7  25 73 5a 32
 DEC 1008 HEX  3f0:  8b ab 26 fb  c2 c1 2b 0f   13 e2 ab 18  5e ab f2 41
 DEC 1024 HEX  400:  31 18 5a 6d  69 6f 0c fa   9b 42 80 8b  38 e1 32 a2
 DEC 1520 HEX  5f0:  56 4d 3d ae  18 3c 52 34   c8 af 1e 51  06 1c 44 b5
 DEC 1536 HEX  600:  3c 07 78 a7  b5 f7 2d 3c   23 a3 13 5c  7d 67 b9 f4
 DEC 2032 HEX  7f0:  f3 43 69 89  0f cf 16 fb   51 7d ca ae  44 63 b2 dd
 DEC 2048 HEX  800:  02 f3 1c 81  e8 20 07 31   b8 99 b0 28  e7 91 bf a7
 DEC 3056 HEX  bf0:  72 da 64 62  83 22 8c 14   30 08 53 70  17 95 61 6f
 DEC 3072 HEX  c00:  4e 0a 8c 6f  79 34 a7 88   e2 26 5e 81  d6 d0 c8 f4
 DEC 4080 HEX  ff0:  43 8d d5 ea  fe a0 11 1b   6f 36 b4 b9  38 da 2a 68
 DEC 4096 HEX 1000:  5f 6b fc 73  81 58 74 d9   71 00 f0 86  97 93 57 d8
 Key length: 128 bits.
 key: 0xebb46227c6cc8b37641910833222772a

 DEC    0 HEX    0:  72 0c 94 b6  3e df 44 e1   31 d9 50 ca  21 1a 5a 30
 DEC   16 HEX   10:  c3 66 fd ea  cf 9c a8 04   36 be 7c 35  84 24 d2 0b
 DEC  240 HEX   f0:  b3 39 4a 40  aa bf 75 cb   a4 22 82 ef  25 a0 05 9f
 DEC  256 HEX  100:  48 47 d8 1d  a4 94 2d bc   24 9d ef c4  8c 92 2b 9f
 DEC  496 HEX  1f0:  08 12 8c 46  9f 27 53 42   ad da 20 2b  2b 58 da 95
 DEC  512 HEX  200:  97 0d ac ef  40 ad 98 72   3b ac 5d 69  55 b8 17 61
 DEC  752 HEX  2f0:  3c b8 99 93  b0 7b 0c ed   93 de 13 d2  a1 10 13 ac
 DEC  768 HEX  300:  ef 2d 67 6f  15 45 c2 c1   3d c6 80 a0  2f 4a db fe
 DEC 1008 HEX  3f0:  b6 05 95 51  4f 24 bc 9f   e5 22 a6 ca  d7 39 36 44
 DEC 1024 HEX  400:  b5 15 a8 c5  01 17 54 f5   90 03 05 8b  db 81 51 4e
 DEC 1520 HEX  5f0:  3c 70 04 7e  8c bc 03 8e   3b 98 20 db  60 1d a4 95
 DEC 1536 HEX  600:  11 75 da 6e  e7 56 de 46   a5 3e 2b 07  56 60 b7 70
 DEC 2032 HEX  7f0:  00 a5 42 bb  a0 21 11 cc   2c 65 b3 8e  bd ba 58 7e
 DEC 2048 HEX  800:  58 65 fd bb  5b 48 06 41   04 e8 30 b3  80 f2 ae de
 DEC 3056 HEX  bf0:  34 b2 1a d2  ad 44 e9 99   db 2d 7f 08  63 f0 d9 b6
 DEC 3072 HEX  c00:  84 a9 21 8f  c3 6e 8a 5f   2c cf be ae  53 a2 7d 25
 DEC 4080 HEX  ff0:  a2 22 1a 11  b8 33 cc b4   98 a5 95 40  f0 54 5f 4a
 DEC 4096 HEX 1000:  5b be b4 78  7d 59 e5 37   3f db ea 6c  6f 75 c2 9b

 Key length: 192 bits.
 key: 0xc109163908ebe51debb46227c6cc8b37641910833222772a

 DEC    0 HEX    0:  54 b6 4e 6b  5a 20 b5 e2   ec 84 59 3d  c7 98 9d a7
 DEC   16 HEX   10:  c1 35 ee e2  37 a8 54 65   ff 97 dc 03  92 4f 45 ce
 DEC  240 HEX   f0:  cf cc 92 2f  b4 a1 4a b4   5d 61 75 aa  bb f2 d2 01
 DEC  256 HEX  100:  83 7b 87 e2  a4 46 ad 0e   f7 98 ac d0  2b 94 12 4f
 DEC  496 HEX  1f0:  17 a6 db d6  64 92 6a 06   36 b3 f4 c3  7a 4f 46 94
 DEC  512 HEX  200:  4a 5f 9f 26  ae ee d4 d4   a2 5f 63 2d  30 52 33 d9
 DEC  752 HEX  2f0:  80 a3 d0 1e  f0 0c 8e 9a   42 09 c1 7f  4e eb 35 8c
 DEC  768 HEX  300:  d1 5e 7d 5f  fa aa bc 02   07 bf 20 0a  11 77 93 a2
 DEC 1008 HEX  3f0:  34 96 82 bf  58 8e aa 52   d0 aa 15 60  34 6a ea fa
 DEC 1024 HEX  400:  f5 85 4c db  76 c8 89 e3   ad 63 35 4e  5f 72 75 e3
 DEC 1520 HEX  5f0:  53 2c 7c ec  cb 39 df 32   36 31 84 05  a4 b1 27 9c
 DEC 1536 HEX  600:  ba ef e6 d9  ce b6 51 84   22 60 e0 d1  e0 5e 3b 90
 DEC 2032 HEX  7f0:  e8 2d 8c 6d  b5 4e 3c 63   3f 58 1c 95  2b a0 42 07
 DEC 2048 HEX  800:  4b 16 e5 0a  bd 38 1b d7   09 00 a9 cd  9a 62 cb 23
 DEC 3056 HEX  bf0:  36 82 ee 33  bd 14 8b d9   f5 86 56 cd  8f 30 d9 fb
 DEC 3072 HEX  c00:  1e 5a 0b 84  75 04 5d 9b   20 b2 62 86  24 ed fd 9e
 DEC 4080 HEX  ff0:  63 ed d6 84  fb 82 62 82   fe 52 8f 9c  0e 92 37 bc
 DEC 4096 HEX 1000:  e4 dd 2e 98  d6 96 0f ae   0b 43 54 54  56 74 33 91
 Key length: 256 bits.
 key: 0x1ada31d5cf688221c109163908ebe51debb46227c6cc8b37641910833222772a

 DEC    0 HEX    0:  dd 5b cb 00  18 e9 22 d4   94 75 9d 7c  39 5d 02 d3
 DEC   16 HEX   10:  c8 44 6f 8f  77 ab f7 37   68 53 53 eb  89 a1 c9 eb
 DEC  240 HEX   f0:  af 3e 30 f9  c0 95 04 59   38 15 15 75  c3 fb 90 98
 DEC  256 HEX  100:  f8 cb 62 74  db 99 b8 0b   1d 20 12 a9  8e d4 8f 0e
 DEC  496 HEX  1f0:  25 c3 00 5a  1c b8 5d e0   76 25 98 39  ab 71 98 ab
 DEC  512 HEX  200:  9d cb c1 83  e8 cb 99 4b   72 7b 75 be  31 80 76 9c
 DEC  752 HEX  2f0:  a1 d3 07 8d  fa 91 69 50   3e d9 d4 49  1d ee 4e b2
 DEC  768 HEX  300:  85 14 a5 49  58 58 09 6f   59 6e 4b cd  66 b1 06 65
 DEC 1008 HEX  3f0:  5f 40 d5 9e  c1 b0 3b 33   73 8e fa 60  b2 25 5d 31
 DEC 1024 HEX  400:  34 77 c7 f7  64 a4 1b ac   ef f9 0b f1  4f 92 b7 cc
 DEC 1520 HEX  5f0:  ac 4e 95 36  8d 99 b9 eb   78 b8 da 8f  81 ff a7 95
 DEC 1536 HEX  600:  8c 3c 13 f8  c2 38 8b b7   3f 38 57 6e  65 b7 c4 46
 DEC 2032 HEX  7f0:  13 c4 b9 c1  df b6 65 79   ed dd 8a 28  0b 9f 73 16
 DEC 2048 HEX  800:  dd d2 78 20  55 01 26 69   8e fa ad c6  4b 64 f6 6e
 DEC 3056 HEX  bf0:  f0 8f 2e 66  d2 8e d1 43   f3 a2 37 cf  9d e7 35 59
 DEC 3072 HEX  c00:  9e a3 6c 52  55 31 b8 80   ba 12 43 34  f5 7b 0b 70
 DEC 4080 HEX  ff0:  d5 a3 9e 3d  fc c5 02 80   ba c4 a6 b5  aa 0d ca 7d
 DEC 4096 HEX 1000:  37 0b 1c 1f  e6 55 91 6d   97 fd 0d 47  ca 1d 72 b8

3.  Security Considerations

   The RC4 algorithm does not meet the basic criteria required for an
   encryption algorithm, as its output is distinguishable from random.
   The use of RC4 continues to be recommended against; in particular,
   its use in new specifications is discouraged.  This note is intended
   only to aid the interoperability of existing specifications that make
   use of RC4.

4.  Copying Conditions

   This document is intended to be considered a Code Component, and is
   thus effectively available under the Simplified BSD License.

5.  References

5.1.  Normative References

   [RC4]        Schneier, B., "Applied Cryptography: Protocols,
                Algorithms, and Source Code in C", Second Edition, John
                Wiley and Sons, New York, NY, 1996.

5.2.  Informative References

   [RFC4345]    Harris, B., "Improved Arcfour Modes for the Secure Shell
                (SSH) Transport Layer Protocol", RFC 4345, January 2006.

   [RFC4634]    Eastlake 3rd, D. and T. Hansen, "US Secure Hash
                Algorithms (SHA and HMAC-SHA)", RFC 4634, July 2006.

   [FMcG]       Fluhrer, S. and D. McGrew, "Statistical Analysis of the
                Alleged RC4 Keystream Generator",
                <http://www.mindspring.com/~dmcgrew/rc4-03.pdf>.

   [LIBGCRYPT]  Koch, W., "Libgcrypt",
                <http://directory.fsf.org/project/libgcrypt/>.

   [MANTIN01]   Mantin, I., "Analysis of the Stream Cipher RC4", <http:/
                /www.wisdom.weizmann.ac.il/~itsik/RC4/Papers/
                Mantin1.zip>.

   [MANTIN05]   Mantin, I., "Predicting and Distinguishing Attacks on
                RC4 Keystream Generator", Proceedings of EUROCRYPT 2005,
                <http://www.iacr.org/cryptodb/archive/2005/EUROCRYPT/
                2597/2597.pdf>.

   [MIRONOV]    Mironov, I., "(Not So) Random Shuffles of RC4",
                <http://eprint.iacr.org/2002/067.pdf>.

   [NETTLE]     Moeller, N., "Nettle - a low-level crypto library",
                <http://www.gnu.org/software/nettle/>.

   [OPENSSL]    OpenSSL Team, "The OpenSSL Project",
                <http://www.openssl.org/>.

   [SANS]       Hopwood, D., "Standard Cryptographic Algorithm Naming
                (SANS) entry on RC4", <http://www.users.zetnet.co.uk/
                hopwood/crypto/scan/cs.html#RC4>.

   [SHS]        National Institute of Standards and Technology (NIST),
                "FIPS Publication 180-3: Secure Hash Standard (SHS)",
                October 2008, <http://csrc.nist.gov/publications/fips/
                fips180-3/fips180-3_final.pdf>.

Authors' Addresses

   Joachim Strombergson
   SecWorks Sweden AB
   Hogenvagen 5A
   Savedalen  433 63
   SE

   EMail: joachim@secworks.se


   Simon Josefsson
   Simon Josefsson Datakonsult AB
   Hagagatan 24
   Stockholm  113 47
   SE

   EMail: simon@josefsson.org
   URI:   http://josefsson.org/