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diff --git a/ics-openvpn-stripped/main/openssl/crypto/rc2/rrc2.doc b/ics-openvpn-stripped/main/openssl/crypto/rc2/rrc2.doc deleted file mode 100644 index f93ee003..00000000 --- a/ics-openvpn-stripped/main/openssl/crypto/rc2/rrc2.doc +++ /dev/null @@ -1,219 +0,0 @@ ->From cygnus.mincom.oz.au!minbne.mincom.oz.au!bunyip.cc.uq.oz.au!munnari.OZ.AU!comp.vuw.ac.nz!waikato!auckland.ac.nz!news Mon Feb 12 18:48:17 EST 1996 -Article 23601 of sci.crypt: -Path: cygnus.mincom.oz.au!minbne.mincom.oz.au!bunyip.cc.uq.oz.au!munnari.OZ.AU!comp.vuw.ac.nz!waikato!auckland.ac.nz!news ->From: pgut01@cs.auckland.ac.nz (Peter Gutmann) -Newsgroups: sci.crypt -Subject: Specification for Ron Rivests Cipher No.2 -Date: 11 Feb 1996 06:45:03 GMT -Organization: University of Auckland -Lines: 203 -Sender: pgut01@cs.auckland.ac.nz (Peter Gutmann) -Message-ID: <4fk39f$f70@net.auckland.ac.nz> -NNTP-Posting-Host: cs26.cs.auckland.ac.nz -X-Newsreader: NN version 6.5.0 #3 (NOV) - - - - - Ron Rivest's Cipher No.2 - ------------------------ - -Ron Rivest's Cipher No.2 (hereafter referred to as RRC.2, other people may -refer to it by other names) is word oriented, operating on a block of 64 bits -divided into four 16-bit words, with a key table of 64 words. All data units -are little-endian. This functional description of the algorithm is based in -the paper "The RC5 Encryption Algorithm" (RC5 is a trademark of RSADSI), using -the same general layout, terminology, and pseudocode style. - - -Notation and RRC.2 Primitive Operations - -RRC.2 uses the following primitive operations: - -1. Two's-complement addition of words, denoted by "+". The inverse operation, - subtraction, is denoted by "-". -2. Bitwise exclusive OR, denoted by "^". -3. Bitwise AND, denoted by "&". -4. Bitwise NOT, denoted by "~". -5. A left-rotation of words; the rotation of word x left by y is denoted - x <<< y. The inverse operation, right-rotation, is denoted x >>> y. - -These operations are directly and efficiently supported by most processors. - - -The RRC.2 Algorithm - -RRC.2 consists of three components, a *key expansion* algorithm, an -*encryption* algorithm, and a *decryption* algorithm. - - -Key Expansion - -The purpose of the key-expansion routine is to expand the user's key K to fill -the expanded key array S, so S resembles an array of random binary words -determined by the user's secret key K. - -Initialising the S-box - -RRC.2 uses a single 256-byte S-box derived from the ciphertext contents of -Beale Cipher No.1 XOR'd with a one-time pad. The Beale Ciphers predate modern -cryptography by enough time that there should be no concerns about trapdoors -hidden in the data. They have been published widely, and the S-box can be -easily recreated from the one-time pad values and the Beale Cipher data taken -from a standard source. To initialise the S-box: - - for i = 0 to 255 do - sBox[ i ] = ( beale[ i ] mod 256 ) ^ pad[ i ] - -The contents of Beale Cipher No.1 and the necessary one-time pad are given as -an appendix at the end of this document. For efficiency, implementors may wish -to skip the Beale Cipher expansion and store the sBox table directly. - -Expanding the Secret Key to 128 Bytes - -The secret key is first expanded to fill 128 bytes (64 words). The expansion -consists of taking the sum of the first and last bytes in the user key, looking -up the sum (modulo 256) in the S-box, and appending the result to the key. The -operation is repeated with the second byte and new last byte of the key until -all 128 bytes have been generated. Note that the following pseudocode treats -the S array as an array of 128 bytes rather than 64 words. - - for j = 0 to length-1 do - S[ j ] = K[ j ] - for j = length to 127 do - s[ j ] = sBox[ ( S[ j-length ] + S[ j-1 ] ) mod 256 ]; - -At this point it is possible to perform a truncation of the effective key -length to ease the creation of espionage-enabled software products. However -since the author cannot conceive why anyone would want to do this, it will not -be considered further. - -The final phase of the key expansion involves replacing the first byte of S -with the entry selected from the S-box: - - S[ 0 ] = sBox[ S[ 0 ] ] - - -Encryption - -The cipher has 16 full rounds, each divided into 4 subrounds. Two of the full -rounds perform an additional transformation on the data. Note that the -following pseudocode treats the S array as an array of 64 words rather than 128 -bytes. - - for i = 0 to 15 do - j = i * 4; - word0 = ( word0 + ( word1 & ~word3 ) + ( word2 & word3 ) + S[ j+0 ] ) <<< 1 - word1 = ( word1 + ( word2 & ~word0 ) + ( word3 & word0 ) + S[ j+1 ] ) <<< 2 - word2 = ( word2 + ( word3 & ~word1 ) + ( word0 & word1 ) + S[ j+2 ] ) <<< 3 - word3 = ( word3 + ( word0 & ~word2 ) + ( word1 & word2 ) + S[ j+3 ] ) <<< 5 - -In addition the fifth and eleventh rounds add the contents of the S-box indexed -by one of the data words to another of the data words following the four -subrounds as follows: - - word0 = word0 + S[ word3 & 63 ]; - word1 = word1 + S[ word0 & 63 ]; - word2 = word2 + S[ word1 & 63 ]; - word3 = word3 + S[ word2 & 63 ]; - - -Decryption - -The decryption operation is simply the inverse of the encryption operation. -Note that the following pseudocode treats the S array as an array of 64 words -rather than 128 bytes. - - for i = 15 downto 0 do - j = i * 4; - word3 = ( word3 >>> 5 ) - ( word0 & ~word2 ) - ( word1 & word2 ) - S[ j+3 ] - word2 = ( word2 >>> 3 ) - ( word3 & ~word1 ) - ( word0 & word1 ) - S[ j+2 ] - word1 = ( word1 >>> 2 ) - ( word2 & ~word0 ) - ( word3 & word0 ) - S[ j+1 ] - word0 = ( word0 >>> 1 ) - ( word1 & ~word3 ) - ( word2 & word3 ) - S[ j+0 ] - -In addition the fifth and eleventh rounds subtract the contents of the S-box -indexed by one of the data words from another one of the data words following -the four subrounds as follows: - - word3 = word3 - S[ word2 & 63 ] - word2 = word2 - S[ word1 & 63 ] - word1 = word1 - S[ word0 & 63 ] - word0 = word0 - S[ word3 & 63 ] - - -Test Vectors - -The following test vectors may be used to test the correctness of an RRC.2 -implementation: - - Key: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 - Plain: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 - Cipher: 0x1C, 0x19, 0x8A, 0x83, 0x8D, 0xF0, 0x28, 0xB7 - - Key: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 - Plain: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 - Cipher: 0x21, 0x82, 0x9C, 0x78, 0xA9, 0xF9, 0xC0, 0x74 - - Key: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 - Plain: 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF - Cipher: 0x13, 0xDB, 0x35, 0x17, 0xD3, 0x21, 0x86, 0x9E - - Key: 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, - 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F - Plain: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 - Cipher: 0x50, 0xDC, 0x01, 0x62, 0xBD, 0x75, 0x7F, 0x31 - - -Appendix: Beale Cipher No.1, "The Locality of the Vault", and One-time Pad for - Creating the S-Box - -Beale Cipher No.1. - - 71, 194, 38,1701, 89, 76, 11, 83,1629, 48, 94, 63, 132, 16, 111, 95, - 84, 341, 975, 14, 40, 64, 27, 81, 139, 213, 63, 90,1120, 8, 15, 3, - 126,2018, 40, 74, 758, 485, 604, 230, 436, 664, 582, 150, 251, 284, 308, 231, - 124, 211, 486, 225, 401, 370, 11, 101, 305, 139, 189, 17, 33, 88, 208, 193, - 145, 1, 94, 73, 416, 918, 263, 28, 500, 538, 356, 117, 136, 219, 27, 176, - 130, 10, 460, 25, 485, 18, 436, 65, 84, 200, 283, 118, 320, 138, 36, 416, - 280, 15, 71, 224, 961, 44, 16, 401, 39, 88, 61, 304, 12, 21, 24, 283, - 134, 92, 63, 246, 486, 682, 7, 219, 184, 360, 780, 18, 64, 463, 474, 131, - 160, 79, 73, 440, 95, 18, 64, 581, 34, 69, 128, 367, 460, 17, 81, 12, - 103, 820, 62, 110, 97, 103, 862, 70, 60,1317, 471, 540, 208, 121, 890, 346, - 36, 150, 59, 568, 614, 13, 120, 63, 219, 812,2160,1780, 99, 35, 18, 21, - 136, 872, 15, 28, 170, 88, 4, 30, 44, 112, 18, 147, 436, 195, 320, 37, - 122, 113, 6, 140, 8, 120, 305, 42, 58, 461, 44, 106, 301, 13, 408, 680, - 93, 86, 116, 530, 82, 568, 9, 102, 38, 416, 89, 71, 216, 728, 965, 818, - 2, 38, 121, 195, 14, 326, 148, 234, 18, 55, 131, 234, 361, 824, 5, 81, - 623, 48, 961, 19, 26, 33, 10,1101, 365, 92, 88, 181, 275, 346, 201, 206 - -One-time Pad. - - 158, 186, 223, 97, 64, 145, 190, 190, 117, 217, 163, 70, 206, 176, 183, 194, - 146, 43, 248, 141, 3, 54, 72, 223, 233, 153, 91, 210, 36, 131, 244, 161, - 105, 120, 113, 191, 113, 86, 19, 245, 213, 221, 43, 27, 242, 157, 73, 213, - 193, 92, 166, 10, 23, 197, 112, 110, 193, 30, 156, 51, 125, 51, 158, 67, - 197, 215, 59, 218, 110, 246, 181, 0, 135, 76, 164, 97, 47, 87, 234, 108, - 144, 127, 6, 6, 222, 172, 80, 144, 22, 245, 207, 70, 227, 182, 146, 134, - 119, 176, 73, 58, 135, 69, 23, 198, 0, 170, 32, 171, 176, 129, 91, 24, - 126, 77, 248, 0, 118, 69, 57, 60, 190, 171, 217, 61, 136, 169, 196, 84, - 168, 167, 163, 102, 223, 64, 174, 178, 166, 239, 242, 195, 249, 92, 59, 38, - 241, 46, 236, 31, 59, 114, 23, 50, 119, 186, 7, 66, 212, 97, 222, 182, - 230, 118, 122, 86, 105, 92, 179, 243, 255, 189, 223, 164, 194, 215, 98, 44, - 17, 20, 53, 153, 137, 224, 176, 100, 208, 114, 36, 200, 145, 150, 215, 20, - 87, 44, 252, 20, 235, 242, 163, 132, 63, 18, 5, 122, 74, 97, 34, 97, - 142, 86, 146, 221, 179, 166, 161, 74, 69, 182, 88, 120, 128, 58, 76, 155, - 15, 30, 77, 216, 165, 117, 107, 90, 169, 127, 143, 181, 208, 137, 200, 127, - 170, 195, 26, 84, 255, 132, 150, 58, 103, 250, 120, 221, 237, 37, 8, 99 - - -Implementation - -A non-US based programmer who has never seen any encryption code before will -shortly be implementing RRC.2 based solely on this specification and not on -knowledge of any other encryption algorithms. Stand by. - - - |