diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/lib/libcrypto/rc4/rrc4.doc | 278 | ||||
| -rw-r--r-- | src/lib/libssl/src/crypto/rc4/rrc4.doc | 278 |
2 files changed, 0 insertions, 556 deletions
diff --git a/src/lib/libcrypto/rc4/rrc4.doc b/src/lib/libcrypto/rc4/rrc4.doc deleted file mode 100644 index 2f9a953c12..0000000000 --- a/src/lib/libcrypto/rc4/rrc4.doc +++ /dev/null | |||
| @@ -1,278 +0,0 @@ | |||
| 1 | Newsgroups: sci.crypt,alt.security,comp.security.misc,alt.privacy | ||
| 2 | Path: ghost.dsi.unimi.it!univ-lyon1.fr!jussieu.fr!zaphod.crihan.fr!warwick!clyde.open.ac.uk!strath-cs!bnr.co.uk!bt!pipex!howland.reston.ans.net!europa.eng.gtefsd.com!MathWorks.Com!yeshua.marcam.com!charnel.ecst.csuchico.edu!csusac!csus.edu!netcom.com!sterndark | ||
| 3 | From: sterndark@netcom.com (David Sterndark) | ||
| 4 | Subject: RC4 Algorithm revealed. | ||
| 5 | Message-ID: <sternCvKL4B.Hyy@netcom.com> | ||
| 6 | Sender: sterndark@netcom.com | ||
| 7 | Organization: NETCOM On-line Communication Services (408 261-4700 guest) | ||
| 8 | X-Newsreader: TIN [version 1.2 PL1] | ||
| 9 | Date: Wed, 14 Sep 1994 06:35:31 GMT | ||
| 10 | Lines: 263 | ||
| 11 | Xref: ghost.dsi.unimi.it sci.crypt:27332 alt.security:14732 comp.security.misc:11701 alt.privacy:16026 | ||
| 12 | |||
| 13 | I am shocked, shocked, I tell you, shocked, to discover | ||
| 14 | that the cypherpunks have illegaly and criminally revealed | ||
| 15 | a crucial RSA trade secret and harmed the security of | ||
| 16 | America by reverse engineering the RC4 algorithm and | ||
| 17 | publishing it to the world. | ||
| 18 | |||
| 19 | On Saturday morning an anonymous cypherpunk wrote: | ||
| 20 | |||
| 21 | |||
| 22 | SUBJECT: RC4 Source Code | ||
| 23 | |||
| 24 | |||
| 25 | I've tested this. It is compatible with the RC4 object module | ||
| 26 | that comes in the various RSA toolkits. | ||
| 27 | |||
| 28 | /* rc4.h */ | ||
| 29 | typedef struct rc4_key | ||
| 30 | { | ||
| 31 | unsigned char state[256]; | ||
| 32 | unsigned char x; | ||
| 33 | unsigned char y; | ||
| 34 | } rc4_key; | ||
| 35 | void prepare_key(unsigned char *key_data_ptr,int key_data_len, | ||
| 36 | rc4_key *key); | ||
| 37 | void rc4(unsigned char *buffer_ptr,int buffer_len,rc4_key * key); | ||
| 38 | |||
| 39 | |||
| 40 | /*rc4.c */ | ||
| 41 | #include "rc4.h" | ||
| 42 | static void swap_byte(unsigned char *a, unsigned char *b); | ||
| 43 | void prepare_key(unsigned char *key_data_ptr, int key_data_len, | ||
| 44 | rc4_key *key) | ||
| 45 | { | ||
| 46 | unsigned char swapByte; | ||
| 47 | unsigned char index1; | ||
| 48 | unsigned char index2; | ||
| 49 | unsigned char* state; | ||
| 50 | short counter; | ||
| 51 | |||
| 52 | state = &key->state[0]; | ||
| 53 | for(counter = 0; counter < 256; counter++) | ||
| 54 | state[counter] = counter; | ||
| 55 | key->x = 0; | ||
| 56 | key->y = 0; | ||
| 57 | index1 = 0; | ||
| 58 | index2 = 0; | ||
| 59 | for(counter = 0; counter < 256; counter++) | ||
| 60 | { | ||
| 61 | index2 = (key_data_ptr[index1] + state[counter] + | ||
| 62 | index2) % 256; | ||
| 63 | swap_byte(&state[counter], &state[index2]); | ||
| 64 | |||
| 65 | index1 = (index1 + 1) % key_data_len; | ||
| 66 | } | ||
| 67 | } | ||
| 68 | |||
| 69 | void rc4(unsigned char *buffer_ptr, int buffer_len, rc4_key *key) | ||
| 70 | { | ||
| 71 | unsigned char x; | ||
| 72 | unsigned char y; | ||
| 73 | unsigned char* state; | ||
| 74 | unsigned char xorIndex; | ||
| 75 | short counter; | ||
| 76 | |||
| 77 | x = key->x; | ||
| 78 | y = key->y; | ||
| 79 | |||
| 80 | state = &key->state[0]; | ||
| 81 | for(counter = 0; counter < buffer_len; counter ++) | ||
| 82 | { | ||
| 83 | x = (x + 1) % 256; | ||
| 84 | y = (state[x] + y) % 256; | ||
| 85 | swap_byte(&state[x], &state[y]); | ||
| 86 | |||
| 87 | xorIndex = (state[x] + state[y]) % 256; | ||
| 88 | |||
| 89 | buffer_ptr[counter] ^= state[xorIndex]; | ||
| 90 | } | ||
| 91 | key->x = x; | ||
| 92 | key->y = y; | ||
| 93 | } | ||
| 94 | |||
| 95 | static void swap_byte(unsigned char *a, unsigned char *b) | ||
| 96 | { | ||
| 97 | unsigned char swapByte; | ||
| 98 | |||
| 99 | swapByte = *a; | ||
| 100 | *a = *b; | ||
| 101 | *b = swapByte; | ||
| 102 | } | ||
| 103 | |||
| 104 | |||
| 105 | |||
| 106 | Another cypherpunk, this one not anonymous, tested the | ||
| 107 | output from this algorithm against the output from | ||
| 108 | official RC4 object code | ||
| 109 | |||
| 110 | |||
| 111 | Date: Tue, 13 Sep 94 18:37:56 PDT | ||
| 112 | From: ekr@eit.COM (Eric Rescorla) | ||
| 113 | Message-Id: <9409140137.AA17743@eitech.eit.com> | ||
| 114 | Subject: RC4 compatibility testing | ||
| 115 | Cc: cypherpunks@toad.com | ||
| 116 | |||
| 117 | One data point: | ||
| 118 | |||
| 119 | I can't say anything about the internals of RC4 versus the | ||
| 120 | algorithm that Bill Sommerfeld is rightly calling 'Alleged RC4', | ||
| 121 | since I don't know anything about RC4's internals. | ||
| 122 | |||
| 123 | However, I do have a (legitimately acquired) copy of BSAFE2 and | ||
| 124 | so I'm able to compare the output of this algorithm to the output | ||
| 125 | of genuine RC4 as found in BSAFE. I chose a set of test vectors | ||
| 126 | and ran them through both algorithms. The algorithms appear to | ||
| 127 | give identical results, at least with these key/plaintext pairs. | ||
| 128 | |||
| 129 | I note that this is the algorithm _without_ Hal Finney's | ||
| 130 | proposed modification | ||
| 131 | |||
| 132 | (see <199409130605.XAA24133@jobe.shell.portal.com>). | ||
| 133 | |||
| 134 | The vectors I used (together with the ciphertext they produce) | ||
| 135 | follow at the end of this message. | ||
| 136 | |||
| 137 | -Ekr | ||
| 138 | |||
| 139 | Disclaimer: This posting does not reflect the opinions of EIT. | ||
| 140 | |||
| 141 | --------------------results follow-------------- | ||
| 142 | Test vector 0 | ||
| 143 | Key: 0x01 0x23 0x45 0x67 0x89 0xab 0xcd 0xef | ||
| 144 | Input: 0x01 0x23 0x45 0x67 0x89 0xab 0xcd 0xef | ||
| 145 | 0 Output: 0x75 0xb7 0x87 0x80 0x99 0xe0 0xc5 0x96 | ||
| 146 | |||
| 147 | Test vector 1 | ||
| 148 | Key: 0x01 0x23 0x45 0x67 0x89 0xab 0xcd 0xef | ||
| 149 | Input: 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 | ||
| 150 | 0 Output: 0x74 0x94 0xc2 0xe7 0x10 0x4b 0x08 0x79 | ||
| 151 | |||
| 152 | Test vector 2 | ||
| 153 | Key: 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 | ||
| 154 | Input: 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 | ||
| 155 | 0 Output: 0xde 0x18 0x89 0x41 0xa3 0x37 0x5d 0x3a | ||
| 156 | |||
| 157 | Test vector 3 | ||
| 158 | Key: 0xef 0x01 0x23 0x45 | ||
| 159 | Input: 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 | ||
| 160 | 0 Output: 0xd6 0xa1 0x41 0xa7 0xec 0x3c 0x38 0xdf 0xbd 0x61 | ||
| 161 | |||
| 162 | Test vector 4 | ||
| 163 | Key: 0x01 0x23 0x45 0x67 0x89 0xab 0xcd 0xef | ||
| 164 | Input: 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 165 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 166 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 167 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 168 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 169 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 170 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 171 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 172 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 173 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 174 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 175 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 176 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 177 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 178 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 179 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 180 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 181 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 182 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 183 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 184 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 185 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 186 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 187 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 188 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 189 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 190 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 191 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 192 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 193 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 194 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 195 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 196 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 197 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 198 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 199 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 200 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 201 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 202 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 203 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 204 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 205 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 206 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 207 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 208 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 209 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 210 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 211 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 212 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 213 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 214 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 215 | 0x01 | ||
| 216 | 0 Output: 0x75 0x95 0xc3 0xe6 0x11 0x4a 0x09 0x78 0x0c 0x4a 0xd4 | ||
| 217 | 0x52 0x33 0x8e 0x1f 0xfd 0x9a 0x1b 0xe9 0x49 0x8f | ||
| 218 | 0x81 0x3d 0x76 0x53 0x34 0x49 0xb6 0x77 0x8d 0xca | ||
| 219 | 0xd8 0xc7 0x8a 0x8d 0x2b 0xa9 0xac 0x66 0x08 0x5d | ||
| 220 | 0x0e 0x53 0xd5 0x9c 0x26 0xc2 0xd1 0xc4 0x90 0xc1 | ||
| 221 | 0xeb 0xbe 0x0c 0xe6 0x6d 0x1b 0x6b 0x1b 0x13 0xb6 | ||
| 222 | 0xb9 0x19 0xb8 0x47 0xc2 0x5a 0x91 0x44 0x7a 0x95 | ||
| 223 | 0xe7 0x5e 0x4e 0xf1 0x67 0x79 0xcd 0xe8 0xbf 0x0a | ||
| 224 | 0x95 0x85 0x0e 0x32 0xaf 0x96 0x89 0x44 0x4f 0xd3 | ||
| 225 | 0x77 0x10 0x8f 0x98 0xfd 0xcb 0xd4 0xe7 0x26 0x56 | ||
| 226 | 0x75 0x00 0x99 0x0b 0xcc 0x7e 0x0c 0xa3 0xc4 0xaa | ||
| 227 | 0xa3 0x04 0xa3 0x87 0xd2 0x0f 0x3b 0x8f 0xbb 0xcd | ||
| 228 | 0x42 0xa1 0xbd 0x31 0x1d 0x7a 0x43 0x03 0xdd 0xa5 | ||
| 229 | 0xab 0x07 0x88 0x96 0xae 0x80 0xc1 0x8b 0x0a 0xf6 | ||
| 230 | 0x6d 0xff 0x31 0x96 0x16 0xeb 0x78 0x4e 0x49 0x5a | ||
| 231 | 0xd2 0xce 0x90 0xd7 0xf7 0x72 0xa8 0x17 0x47 0xb6 | ||
| 232 | 0x5f 0x62 0x09 0x3b 0x1e 0x0d 0xb9 0xe5 0xba 0x53 | ||
| 233 | 0x2f 0xaf 0xec 0x47 0x50 0x83 0x23 0xe6 0x71 0x32 | ||
| 234 | 0x7d 0xf9 0x44 0x44 0x32 0xcb 0x73 0x67 0xce 0xc8 | ||
| 235 | 0x2f 0x5d 0x44 0xc0 0xd0 0x0b 0x67 0xd6 0x50 0xa0 | ||
| 236 | 0x75 0xcd 0x4b 0x70 0xde 0xdd 0x77 0xeb 0x9b 0x10 | ||
| 237 | 0x23 0x1b 0x6b 0x5b 0x74 0x13 0x47 0x39 0x6d 0x62 | ||
| 238 | 0x89 0x74 0x21 0xd4 0x3d 0xf9 0xb4 0x2e 0x44 0x6e | ||
| 239 | 0x35 0x8e 0x9c 0x11 0xa9 0xb2 0x18 0x4e 0xcb 0xef | ||
| 240 | 0x0c 0xd8 0xe7 0xa8 0x77 0xef 0x96 0x8f 0x13 0x90 | ||
| 241 | 0xec 0x9b 0x3d 0x35 0xa5 0x58 0x5c 0xb0 0x09 0x29 | ||
| 242 | 0x0e 0x2f 0xcd 0xe7 0xb5 0xec 0x66 0xd9 0x08 0x4b | ||
| 243 | 0xe4 0x40 0x55 0xa6 0x19 0xd9 0xdd 0x7f 0xc3 0x16 | ||
| 244 | 0x6f 0x94 0x87 0xf7 0xcb 0x27 0x29 0x12 0x42 0x64 | ||
| 245 | 0x45 0x99 0x85 0x14 0xc1 0x5d 0x53 0xa1 0x8c 0x86 | ||
| 246 | 0x4c 0xe3 0xa2 0xb7 0x55 0x57 0x93 0x98 0x81 0x26 | ||
| 247 | 0x52 0x0e 0xac 0xf2 0xe3 0x06 0x6e 0x23 0x0c 0x91 | ||
| 248 | 0xbe 0xe4 0xdd 0x53 0x04 0xf5 0xfd 0x04 0x05 0xb3 | ||
| 249 | 0x5b 0xd9 0x9c 0x73 0x13 0x5d 0x3d 0x9b 0xc3 0x35 | ||
| 250 | 0xee 0x04 0x9e 0xf6 0x9b 0x38 0x67 0xbf 0x2d 0x7b | ||
| 251 | 0xd1 0xea 0xa5 0x95 0xd8 0xbf 0xc0 0x06 0x6f 0xf8 | ||
| 252 | 0xd3 0x15 0x09 0xeb 0x0c 0x6c 0xaa 0x00 0x6c 0x80 | ||
| 253 | 0x7a 0x62 0x3e 0xf8 0x4c 0x3d 0x33 0xc1 0x95 0xd2 | ||
| 254 | 0x3e 0xe3 0x20 0xc4 0x0d 0xe0 0x55 0x81 0x57 0xc8 | ||
| 255 | 0x22 0xd4 0xb8 0xc5 0x69 0xd8 0x49 0xae 0xd5 0x9d | ||
| 256 | 0x4e 0x0f 0xd7 0xf3 0x79 0x58 0x6b 0x4b 0x7f 0xf6 | ||
| 257 | 0x84 0xed 0x6a 0x18 0x9f 0x74 0x86 0xd4 0x9b 0x9c | ||
| 258 | 0x4b 0xad 0x9b 0xa2 0x4b 0x96 0xab 0xf9 0x24 0x37 | ||
| 259 | 0x2c 0x8a 0x8f 0xff 0xb1 0x0d 0x55 0x35 0x49 0x00 | ||
| 260 | 0xa7 0x7a 0x3d 0xb5 0xf2 0x05 0xe1 0xb9 0x9f 0xcd | ||
| 261 | 0x86 0x60 0x86 0x3a 0x15 0x9a 0xd4 0xab 0xe4 0x0f | ||
| 262 | 0xa4 0x89 0x34 0x16 0x3d 0xdd 0xe5 0x42 0xa6 0x58 | ||
| 263 | 0x55 0x40 0xfd 0x68 0x3c 0xbf 0xd8 0xc0 0x0f 0x12 | ||
| 264 | 0x12 0x9a 0x28 0x4d 0xea 0xcc 0x4c 0xde 0xfe 0x58 | ||
| 265 | 0xbe 0x71 0x37 0x54 0x1c 0x04 0x71 0x26 0xc8 0xd4 | ||
| 266 | 0x9e 0x27 0x55 0xab 0x18 0x1a 0xb7 0xe9 0x40 0xb0 | ||
| 267 | 0xc0 | ||
| 268 | |||
| 269 | |||
| 270 | |||
| 271 | -- | ||
| 272 | --------------------------------------------------------------------- | ||
| 273 | We have the right to defend ourselves and our | ||
| 274 | property, because of the kind of animals that we James A. Donald | ||
| 275 | are. True law derives from this right, not from | ||
| 276 | the arbitrary power of the omnipotent state. jamesd@netcom.com | ||
| 277 | |||
| 278 | |||
diff --git a/src/lib/libssl/src/crypto/rc4/rrc4.doc b/src/lib/libssl/src/crypto/rc4/rrc4.doc deleted file mode 100644 index 2f9a953c12..0000000000 --- a/src/lib/libssl/src/crypto/rc4/rrc4.doc +++ /dev/null | |||
| @@ -1,278 +0,0 @@ | |||
| 1 | Newsgroups: sci.crypt,alt.security,comp.security.misc,alt.privacy | ||
| 2 | Path: ghost.dsi.unimi.it!univ-lyon1.fr!jussieu.fr!zaphod.crihan.fr!warwick!clyde.open.ac.uk!strath-cs!bnr.co.uk!bt!pipex!howland.reston.ans.net!europa.eng.gtefsd.com!MathWorks.Com!yeshua.marcam.com!charnel.ecst.csuchico.edu!csusac!csus.edu!netcom.com!sterndark | ||
| 3 | From: sterndark@netcom.com (David Sterndark) | ||
| 4 | Subject: RC4 Algorithm revealed. | ||
| 5 | Message-ID: <sternCvKL4B.Hyy@netcom.com> | ||
| 6 | Sender: sterndark@netcom.com | ||
| 7 | Organization: NETCOM On-line Communication Services (408 261-4700 guest) | ||
| 8 | X-Newsreader: TIN [version 1.2 PL1] | ||
| 9 | Date: Wed, 14 Sep 1994 06:35:31 GMT | ||
| 10 | Lines: 263 | ||
| 11 | Xref: ghost.dsi.unimi.it sci.crypt:27332 alt.security:14732 comp.security.misc:11701 alt.privacy:16026 | ||
| 12 | |||
| 13 | I am shocked, shocked, I tell you, shocked, to discover | ||
| 14 | that the cypherpunks have illegaly and criminally revealed | ||
| 15 | a crucial RSA trade secret and harmed the security of | ||
| 16 | America by reverse engineering the RC4 algorithm and | ||
| 17 | publishing it to the world. | ||
| 18 | |||
| 19 | On Saturday morning an anonymous cypherpunk wrote: | ||
| 20 | |||
| 21 | |||
| 22 | SUBJECT: RC4 Source Code | ||
| 23 | |||
| 24 | |||
| 25 | I've tested this. It is compatible with the RC4 object module | ||
| 26 | that comes in the various RSA toolkits. | ||
| 27 | |||
| 28 | /* rc4.h */ | ||
| 29 | typedef struct rc4_key | ||
| 30 | { | ||
| 31 | unsigned char state[256]; | ||
| 32 | unsigned char x; | ||
| 33 | unsigned char y; | ||
| 34 | } rc4_key; | ||
| 35 | void prepare_key(unsigned char *key_data_ptr,int key_data_len, | ||
| 36 | rc4_key *key); | ||
| 37 | void rc4(unsigned char *buffer_ptr,int buffer_len,rc4_key * key); | ||
| 38 | |||
| 39 | |||
| 40 | /*rc4.c */ | ||
| 41 | #include "rc4.h" | ||
| 42 | static void swap_byte(unsigned char *a, unsigned char *b); | ||
| 43 | void prepare_key(unsigned char *key_data_ptr, int key_data_len, | ||
| 44 | rc4_key *key) | ||
| 45 | { | ||
| 46 | unsigned char swapByte; | ||
| 47 | unsigned char index1; | ||
| 48 | unsigned char index2; | ||
| 49 | unsigned char* state; | ||
| 50 | short counter; | ||
| 51 | |||
| 52 | state = &key->state[0]; | ||
| 53 | for(counter = 0; counter < 256; counter++) | ||
| 54 | state[counter] = counter; | ||
| 55 | key->x = 0; | ||
| 56 | key->y = 0; | ||
| 57 | index1 = 0; | ||
| 58 | index2 = 0; | ||
| 59 | for(counter = 0; counter < 256; counter++) | ||
| 60 | { | ||
| 61 | index2 = (key_data_ptr[index1] + state[counter] + | ||
| 62 | index2) % 256; | ||
| 63 | swap_byte(&state[counter], &state[index2]); | ||
| 64 | |||
| 65 | index1 = (index1 + 1) % key_data_len; | ||
| 66 | } | ||
| 67 | } | ||
| 68 | |||
| 69 | void rc4(unsigned char *buffer_ptr, int buffer_len, rc4_key *key) | ||
| 70 | { | ||
| 71 | unsigned char x; | ||
| 72 | unsigned char y; | ||
| 73 | unsigned char* state; | ||
| 74 | unsigned char xorIndex; | ||
| 75 | short counter; | ||
| 76 | |||
| 77 | x = key->x; | ||
| 78 | y = key->y; | ||
| 79 | |||
| 80 | state = &key->state[0]; | ||
| 81 | for(counter = 0; counter < buffer_len; counter ++) | ||
| 82 | { | ||
| 83 | x = (x + 1) % 256; | ||
| 84 | y = (state[x] + y) % 256; | ||
| 85 | swap_byte(&state[x], &state[y]); | ||
| 86 | |||
| 87 | xorIndex = (state[x] + state[y]) % 256; | ||
| 88 | |||
| 89 | buffer_ptr[counter] ^= state[xorIndex]; | ||
| 90 | } | ||
| 91 | key->x = x; | ||
| 92 | key->y = y; | ||
| 93 | } | ||
| 94 | |||
| 95 | static void swap_byte(unsigned char *a, unsigned char *b) | ||
| 96 | { | ||
| 97 | unsigned char swapByte; | ||
| 98 | |||
| 99 | swapByte = *a; | ||
| 100 | *a = *b; | ||
| 101 | *b = swapByte; | ||
| 102 | } | ||
| 103 | |||
| 104 | |||
| 105 | |||
| 106 | Another cypherpunk, this one not anonymous, tested the | ||
| 107 | output from this algorithm against the output from | ||
| 108 | official RC4 object code | ||
| 109 | |||
| 110 | |||
| 111 | Date: Tue, 13 Sep 94 18:37:56 PDT | ||
| 112 | From: ekr@eit.COM (Eric Rescorla) | ||
| 113 | Message-Id: <9409140137.AA17743@eitech.eit.com> | ||
| 114 | Subject: RC4 compatibility testing | ||
| 115 | Cc: cypherpunks@toad.com | ||
| 116 | |||
| 117 | One data point: | ||
| 118 | |||
| 119 | I can't say anything about the internals of RC4 versus the | ||
| 120 | algorithm that Bill Sommerfeld is rightly calling 'Alleged RC4', | ||
| 121 | since I don't know anything about RC4's internals. | ||
| 122 | |||
| 123 | However, I do have a (legitimately acquired) copy of BSAFE2 and | ||
| 124 | so I'm able to compare the output of this algorithm to the output | ||
| 125 | of genuine RC4 as found in BSAFE. I chose a set of test vectors | ||
| 126 | and ran them through both algorithms. The algorithms appear to | ||
| 127 | give identical results, at least with these key/plaintext pairs. | ||
| 128 | |||
| 129 | I note that this is the algorithm _without_ Hal Finney's | ||
| 130 | proposed modification | ||
| 131 | |||
| 132 | (see <199409130605.XAA24133@jobe.shell.portal.com>). | ||
| 133 | |||
| 134 | The vectors I used (together with the ciphertext they produce) | ||
| 135 | follow at the end of this message. | ||
| 136 | |||
| 137 | -Ekr | ||
| 138 | |||
| 139 | Disclaimer: This posting does not reflect the opinions of EIT. | ||
| 140 | |||
| 141 | --------------------results follow-------------- | ||
| 142 | Test vector 0 | ||
| 143 | Key: 0x01 0x23 0x45 0x67 0x89 0xab 0xcd 0xef | ||
| 144 | Input: 0x01 0x23 0x45 0x67 0x89 0xab 0xcd 0xef | ||
| 145 | 0 Output: 0x75 0xb7 0x87 0x80 0x99 0xe0 0xc5 0x96 | ||
| 146 | |||
| 147 | Test vector 1 | ||
| 148 | Key: 0x01 0x23 0x45 0x67 0x89 0xab 0xcd 0xef | ||
| 149 | Input: 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 | ||
| 150 | 0 Output: 0x74 0x94 0xc2 0xe7 0x10 0x4b 0x08 0x79 | ||
| 151 | |||
| 152 | Test vector 2 | ||
| 153 | Key: 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 | ||
| 154 | Input: 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 | ||
| 155 | 0 Output: 0xde 0x18 0x89 0x41 0xa3 0x37 0x5d 0x3a | ||
| 156 | |||
| 157 | Test vector 3 | ||
| 158 | Key: 0xef 0x01 0x23 0x45 | ||
| 159 | Input: 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 | ||
| 160 | 0 Output: 0xd6 0xa1 0x41 0xa7 0xec 0x3c 0x38 0xdf 0xbd 0x61 | ||
| 161 | |||
| 162 | Test vector 4 | ||
| 163 | Key: 0x01 0x23 0x45 0x67 0x89 0xab 0xcd 0xef | ||
| 164 | Input: 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 165 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 166 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 167 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 168 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 169 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 170 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 171 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 172 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 173 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 174 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 175 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 176 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 177 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 178 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 179 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 180 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 181 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 182 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 183 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 184 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 185 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 186 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 187 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 188 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 189 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 190 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 191 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 192 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 193 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 194 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 195 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 196 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 197 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 198 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 199 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 200 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 201 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 202 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 203 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 204 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 205 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 206 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 207 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 208 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 209 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 210 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 211 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 212 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 213 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 214 | 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 0x01 | ||
| 215 | 0x01 | ||
| 216 | 0 Output: 0x75 0x95 0xc3 0xe6 0x11 0x4a 0x09 0x78 0x0c 0x4a 0xd4 | ||
| 217 | 0x52 0x33 0x8e 0x1f 0xfd 0x9a 0x1b 0xe9 0x49 0x8f | ||
| 218 | 0x81 0x3d 0x76 0x53 0x34 0x49 0xb6 0x77 0x8d 0xca | ||
| 219 | 0xd8 0xc7 0x8a 0x8d 0x2b 0xa9 0xac 0x66 0x08 0x5d | ||
| 220 | 0x0e 0x53 0xd5 0x9c 0x26 0xc2 0xd1 0xc4 0x90 0xc1 | ||
| 221 | 0xeb 0xbe 0x0c 0xe6 0x6d 0x1b 0x6b 0x1b 0x13 0xb6 | ||
| 222 | 0xb9 0x19 0xb8 0x47 0xc2 0x5a 0x91 0x44 0x7a 0x95 | ||
| 223 | 0xe7 0x5e 0x4e 0xf1 0x67 0x79 0xcd 0xe8 0xbf 0x0a | ||
| 224 | 0x95 0x85 0x0e 0x32 0xaf 0x96 0x89 0x44 0x4f 0xd3 | ||
| 225 | 0x77 0x10 0x8f 0x98 0xfd 0xcb 0xd4 0xe7 0x26 0x56 | ||
| 226 | 0x75 0x00 0x99 0x0b 0xcc 0x7e 0x0c 0xa3 0xc4 0xaa | ||
| 227 | 0xa3 0x04 0xa3 0x87 0xd2 0x0f 0x3b 0x8f 0xbb 0xcd | ||
| 228 | 0x42 0xa1 0xbd 0x31 0x1d 0x7a 0x43 0x03 0xdd 0xa5 | ||
| 229 | 0xab 0x07 0x88 0x96 0xae 0x80 0xc1 0x8b 0x0a 0xf6 | ||
| 230 | 0x6d 0xff 0x31 0x96 0x16 0xeb 0x78 0x4e 0x49 0x5a | ||
| 231 | 0xd2 0xce 0x90 0xd7 0xf7 0x72 0xa8 0x17 0x47 0xb6 | ||
| 232 | 0x5f 0x62 0x09 0x3b 0x1e 0x0d 0xb9 0xe5 0xba 0x53 | ||
| 233 | 0x2f 0xaf 0xec 0x47 0x50 0x83 0x23 0xe6 0x71 0x32 | ||
| 234 | 0x7d 0xf9 0x44 0x44 0x32 0xcb 0x73 0x67 0xce 0xc8 | ||
| 235 | 0x2f 0x5d 0x44 0xc0 0xd0 0x0b 0x67 0xd6 0x50 0xa0 | ||
| 236 | 0x75 0xcd 0x4b 0x70 0xde 0xdd 0x77 0xeb 0x9b 0x10 | ||
| 237 | 0x23 0x1b 0x6b 0x5b 0x74 0x13 0x47 0x39 0x6d 0x62 | ||
| 238 | 0x89 0x74 0x21 0xd4 0x3d 0xf9 0xb4 0x2e 0x44 0x6e | ||
| 239 | 0x35 0x8e 0x9c 0x11 0xa9 0xb2 0x18 0x4e 0xcb 0xef | ||
| 240 | 0x0c 0xd8 0xe7 0xa8 0x77 0xef 0x96 0x8f 0x13 0x90 | ||
| 241 | 0xec 0x9b 0x3d 0x35 0xa5 0x58 0x5c 0xb0 0x09 0x29 | ||
| 242 | 0x0e 0x2f 0xcd 0xe7 0xb5 0xec 0x66 0xd9 0x08 0x4b | ||
| 243 | 0xe4 0x40 0x55 0xa6 0x19 0xd9 0xdd 0x7f 0xc3 0x16 | ||
| 244 | 0x6f 0x94 0x87 0xf7 0xcb 0x27 0x29 0x12 0x42 0x64 | ||
| 245 | 0x45 0x99 0x85 0x14 0xc1 0x5d 0x53 0xa1 0x8c 0x86 | ||
| 246 | 0x4c 0xe3 0xa2 0xb7 0x55 0x57 0x93 0x98 0x81 0x26 | ||
| 247 | 0x52 0x0e 0xac 0xf2 0xe3 0x06 0x6e 0x23 0x0c 0x91 | ||
| 248 | 0xbe 0xe4 0xdd 0x53 0x04 0xf5 0xfd 0x04 0x05 0xb3 | ||
| 249 | 0x5b 0xd9 0x9c 0x73 0x13 0x5d 0x3d 0x9b 0xc3 0x35 | ||
| 250 | 0xee 0x04 0x9e 0xf6 0x9b 0x38 0x67 0xbf 0x2d 0x7b | ||
| 251 | 0xd1 0xea 0xa5 0x95 0xd8 0xbf 0xc0 0x06 0x6f 0xf8 | ||
| 252 | 0xd3 0x15 0x09 0xeb 0x0c 0x6c 0xaa 0x00 0x6c 0x80 | ||
| 253 | 0x7a 0x62 0x3e 0xf8 0x4c 0x3d 0x33 0xc1 0x95 0xd2 | ||
| 254 | 0x3e 0xe3 0x20 0xc4 0x0d 0xe0 0x55 0x81 0x57 0xc8 | ||
| 255 | 0x22 0xd4 0xb8 0xc5 0x69 0xd8 0x49 0xae 0xd5 0x9d | ||
| 256 | 0x4e 0x0f 0xd7 0xf3 0x79 0x58 0x6b 0x4b 0x7f 0xf6 | ||
| 257 | 0x84 0xed 0x6a 0x18 0x9f 0x74 0x86 0xd4 0x9b 0x9c | ||
| 258 | 0x4b 0xad 0x9b 0xa2 0x4b 0x96 0xab 0xf9 0x24 0x37 | ||
| 259 | 0x2c 0x8a 0x8f 0xff 0xb1 0x0d 0x55 0x35 0x49 0x00 | ||
| 260 | 0xa7 0x7a 0x3d 0xb5 0xf2 0x05 0xe1 0xb9 0x9f 0xcd | ||
| 261 | 0x86 0x60 0x86 0x3a 0x15 0x9a 0xd4 0xab 0xe4 0x0f | ||
| 262 | 0xa4 0x89 0x34 0x16 0x3d 0xdd 0xe5 0x42 0xa6 0x58 | ||
| 263 | 0x55 0x40 0xfd 0x68 0x3c 0xbf 0xd8 0xc0 0x0f 0x12 | ||
| 264 | 0x12 0x9a 0x28 0x4d 0xea 0xcc 0x4c 0xde 0xfe 0x58 | ||
| 265 | 0xbe 0x71 0x37 0x54 0x1c 0x04 0x71 0x26 0xc8 0xd4 | ||
| 266 | 0x9e 0x27 0x55 0xab 0x18 0x1a 0xb7 0xe9 0x40 0xb0 | ||
| 267 | 0xc0 | ||
| 268 | |||
| 269 | |||
| 270 | |||
| 271 | -- | ||
| 272 | --------------------------------------------------------------------- | ||
| 273 | We have the right to defend ourselves and our | ||
| 274 | property, because of the kind of animals that we James A. Donald | ||
| 275 | are. True law derives from this right, not from | ||
| 276 | the arbitrary power of the omnipotent state. jamesd@netcom.com | ||
| 277 | |||
| 278 | |||
