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| | RC4 - Wikipedia, the free encyclopedia |
 | | In 2001 a new and surprising discovery was made by Fluhrer, Mantin and Shamir: over all possible RC4 keys, the statistics for the first few bytes of output keystream are strongly non-random, leaking information about the key. | | | RC4 is often referred to as "ARCFOUR", to avoid possible trademark problems. | | | The keystream generated by RC4 is slightly biased in favour of certain sequences of bytes. |
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http://en.wikipedia.org/wiki/RC4_(cipher)
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| | Jail Cell RC4 |
| | Since the cipher relies on human computation, there is likely to be a non-negligible rate of introduction of errors into the cipher. | | | The internal state of the keystream generator for generalized RC4 consists of a permutation table of an alphabet, S[0..m-1] (where m is the size of the alphabet), and two counters, i and j. | | | I am attempting to modify the RC4 cipher to be paper-and-pencil computable. |
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http://www.mindflare.com/cipher
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| | CipherSaber Home Page |
| | The cipher key, which is the array K(i) in Schneier's notation, consists of the user key, in the form of an Ascii text string, followed by the ten byte initialization vector. | | | By choosing a simple but strong cipher that is already widely published and agreeing on how to use it, anyone with elementary programming skills can write their own encryption program without relying on any products that can be banned. | | | While cryptographers like to wallow in the complexity of their art, the basic elements of a strong cryptographic system are quite simple and well known in the programming community. |
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http://ciphersaber.gurus.com
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| | [No title] |
| | For example "SHA1" represents all ciphers suites using the digest algorithm SHA1 and "SSLv3" represents all SSL v3 algorithms. | | | If the list includes any ciphers already present they will be ignored: that are they will not moved to the end of the list. | | | Additionally the cipher string "@STRENGTH" can be used at any point to sort the current cipher list in order of an encryption algorithm key length. |
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http://bsdftpd-ssl.sc.ru/doc/all/ciphers.txt
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| | SSLeay 0.9.0b docs |
| | This function returns the key size for the specified cipher; if data is NULL this value is returned and no other computation is performed. | | | For 8 byte block size ciphers, if only 5 bytes in the last block are valid, the last three bytes will be filled with the value 3. | | | One reason for specifying the cipher via a pointer to a structure is that if you only use des-cbc, only the des-cbc routines will be included when you link the program. |
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http://www.columbia.edu/~ariel/ssleay/evp_symmciphers.html
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| | AW: [iaik-ssl] PROBLEMS WITH RC4 CIPHER AND QUESTIONS ABOUT iSaSiLk Micr |
| | Cipher cipher = Cipher.getInstance("RC4"); cipher.init(Cipher.ENCRYPT_MODE, CryptoBag.makeSecretKey(key)); byte[] encr = cipher.doFinal("Ciao".getBytes());... | | | To create a 128 bit RC4 key you may proceed as follows: byte[] key = new byte[16]; SecureRandom rand = SecureRandom.getDefault(); rand.nextBytes(key); Cipher cipher = Cipher.getInstance("RC4"); cipher.init(Cipher.ENCRYPT_MODE, CryptoBag.makeSecretKey(key)); byte[] encr = cipher.doFinal(...);... | | | The client can be a MIDP 1.0 mobile device and so I must use IAIK API for Java 2 Micro Edition Environment ("Jce-me-3.0b2"). |
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http://jce.iaik.tugraz.at/mailarchive/iaik-ssl/msg00760.html
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| | RC4 Stream Cipher |
| | RC4 merupakan salah satu jenis stream cipher, yaitu memproses unit atau input data pada satu saat. | | | Kekurangan lainnya ialah karena enkripsi RC4 adalah XOR antara data bytes dan pseudo-random byte stream yang dihasilkan dari kunci, maka penyerang akan mungkin untuk menentukan beberapa byte pesan orisinal dengan meng-XOR dua set cipher byte, bila beberapa dari pesan input diketahui (atau mudah untuk ditebak). | | | RC4 merupakan enkripsi stream simetrik proprietary yang dibuat oleh RSA Data Security, Inc (RSADSI). |
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http://bdg.centrin.net.id/~budskman/rc4.htm
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| | Standard Cryptographic Algorithm Naming |
| | RC4 is vulnerable to related-key attacks, and therefore it should only be used with keys that are generated by a strong RNG, or by a source of bits that are sufficiently uncorrelated (such as the output of a hash function). | | | Despite the fact that discarding the first 768 bytes of keystream appears to prevent the known attacks, it is still recommended to use RC4-drop only with keys that are generated by a strong RNG, or by a source of bits that are sufficiently uncorrelated (such as the output of a hash function). | | | This algorithm is the same as RC4, except that the first nbytes bytes of keystream are discarded after key scheduling. |
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http://www.users.zetnet.co.uk/hopwood/crypto/scan/cs.html
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| | OpenSSL: CVS Web Interface |
| | As development of speed + * and ciphers goes, another extension to SSL_SUPER and/or SSL_ULTRA would + * be possible. | | | The ciphers are added + * to the resulting precedence to the STACK_OF(SSL_CIPHER). | | | + * For 1) we need the available ciphers and for 2) the cipher + * groups of cipher_aliases added togehter in one list (otherwise + * we would be happy with just the cipher_aliases table). |
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http://cvs.openssl.org/chngview?cn=1788
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| | EETimes.com - Cipher attack delivers heavy blow to WLAN security |
| | Complicating the matter, said Arbaugh, is that in many cases RC4 is implemented as an ASIC, so it is impractical to make changes to deployed systems. | | | "This is far preferable in the wireless environment, as it's the stream cipher that's under attack," he said. | | | For the short term, Belanger sees some remedies that directly address the new attack, such as dropping the first 128 bytes generated by the RC4 algorithm. |
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http://www.eetimes.com/story/OEG20010803S0082
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| | (Update) RC4 Stream Cipher (with file handlin - visual basic, vb, vbscript |
| | RC4 was a patented algorithm, but now it isn't. | | | If you want to find out more about the RC4 algorithm simply go to www.rsasecuirty.com -- the official webpage of the creators of the algorithm. | | | There is no doubt it is the best encryption/decryption code in here, but of course it is now easy to find this code in any other language like c or c++ in other sites -- or to write it from scratch if you know something about the RC4 algorithm, so it's not a big deal. |
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http://www.planet-source-code.com/vb/scripts/ShowCode.asp?txtCodeId=1736&lngWId=1
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| | phpMan: RC4(40) |
| | RC4() encrypts or decrypts the len bytes of data at indata using key and places the result at outdata. | | | RC4_set_key() sets up the RC4_KEY key using the len bytes long key at data. | | | Since RC4 is a stream cipher (the input is XORed with a pseudo-random key stream to produce the output), decryption uses the same function calls as encryption. |
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http://www.ournet.md/~freebsd/divers/man.php/man/RC4/40
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| | RSA Security - 3.6.3 What is RC4? |
| | The algorithm is based on the use of a random permutation. | | | Eight to sixteen machine operations are required per output byte, and the cipher can be expected to run very quickly in software. | | | RC4 is used for file encryption in products such as RSA SecurPC (see Question 5.2.4). |
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http://www.rsasecurity.com/rsalabs/node.asp?id=2250
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| | [No title] |
| | From Record Header -- Protocol Version: 3.0 HandShake Packet Type :- Server Hello From Server Hello -- Protocol Version 3.0 Length of session ID -- 32 bytes Session ID -- 0x81799c38b9e84e795b9310f4b0cedb8fd5c776b88d8bed17b2935558c02d3320 Cipher Suite is -- Hex Code: 0x00 0x04 Type: RSA with 128 bit RC4 and hash function MD5 Finished processing all data. | | | From Record Header -- Protocol Version: 3.0 Finished processing all data. | | | From Client Hello -- Protocol Version: 3.0 Session ID Length -- 0 bytes Session ID -- Cipher Suite Length 45 bytes... |
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http://crypto.stanford.edu/~eujin/sslsniffer/barclaycard.txt
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| | Microsoft Downplays Office Encryption Weakness |
| | Hongjun Wu, a researcher at the Institute for Infocomm Research in Singapore, said Microsoft is misusing the RC4 (Rivest Cipher 4) algorithm that is licensed from RSA Data Security. | | | The consequence is disastrous since a lot of information of the document could be recovered easily," Wu said in an advisory. | | | However, Microsoft officials are downplaying the threat, insisting that the reported flaw poses a very low threat for users of the two popular word processing programs. |
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http://www.eweek.com/article2/0,1759,1752897,00.asp
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| | [No title] |
| | n = 7; #endif /* WITH_RC4 */ #ifdef WITH_DES } else if ((need>=55) && (musthave | | | n=16; #endif /* WITH_DES */ #ifdef WITH_RC4 } else if ((need>=40) && (musthave |
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http://www.sendmail.org/~ca/email/patches/digestmd5.c.p.ssf
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| | Dictionary of Meaning www.mauspfeil.net |
| | There you find a list of all editors and the possibility to edit the original text of the article RC4 (cipher). | | | This redir and this talk page will be listed for deletion as soon as links through them are cleaned up. |
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http://www.mauspfeil.net/RC4_%28cipher%29.html
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| | SSLeay 0.9.0b docs |
| | The main positive feature of RC4 is that it is a very fast cipher, about 4 times faster that DES. | | | This means that there is no initialization vector and there is no feedback of the cipher text into the cipher. | | | RC4() encrypts/decrypts in into out using the key given by key. |
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http://www.di.unito.it/~rabser/ssleay/rc4.html
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| | perl rc4 |
| | It uses an internal table of 256 bytes which is seeded with your key, so you can use smaller key sizes too. | | | To use you just give a key in hex on the command line and the rc4 perl program will encrypt standard input to standard output. | | | This cipher used to be trade secret of RSADSI, but some anonymous person distributed the source code on the Internet in 1994. |
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http://www.cypherspace.org/adam/rsa/rc4.html
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| | RC4 "Rivest Cipher 4" |
| | Crea bytes aleatorios a partir de la clave y hace la operación XOR byte a byte con el archivo a cifrar. | | | El RC4 tiene una clave de 2048 bits, lo que hace que el algoritmo sea rápido y seguro. | | | Se probó contra una copia del RC4 y las pruebas indicaron que ambas rutinas actuaban de la misma forma, por lo que el RC4 ya no es un secreto. |
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http://www.galeon.com/rc4
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| | Class iaik.security.cipher.RC4 |
| | This class only creates a BufferedCipher object for the | | | Creates a RC4 object by calling the BufferedCipher constructor for the RawRC4 cipher. | | | This constructor only internally is used for initializing a RC4 Cipher. |
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http://www.cs.utexas.edu/~chris/cs378/resources/iaikdocs/iaik.security.cipher.RC4.html
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| | F-Secure Welcomes You |
| | Because the CRC checksum can be modified, an attacker can intercept an SSH1 packet, modify the contents, then modify the CRC to match. | | | Passwords sent over SSH1 using the RC4 cipher can be cracked if NULL passwords are disallowed on the server. | | | The server uses the first 16 bytes of SK as an RC4 key (SK1') to encrypt its traffic. |
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http://www.f-secure.com/Support/technical/ssh/ssh1_vulnerabilities.shtml
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| | Wi-Fi Protected Access, WPA2 AND IEEE 802.11I [Cisco Integrated Wireless Network] - Cisco Systems |
| | By encrypting data with a key that can be used only by the intended recipient of the data, TKIP helps to ensure that only the intended audience understands the transmitted data. | | | It implements the National Institute of Standards and Technology (NIST) recommended Advanced Encryption Standard (AES) encryption algorithm using Counter Mode with Cipher Block Chaining Message Authentication Code Protocol (CCMP). | | | TKIP, the encryption mechanism in WPA, relies on RC4 instead of Triple Data Encryption Standard (3DES), AES, or another encryption algorithm. |
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http://www.cisco.com/en/US/netsol/ns340/ns394/ns348/ns337/netqa0900aecd801e3e59.html
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| | Repository - markup - cvs: gsasl/lib/digest-md5/parser.c |
| | /* The value MUST be bigger than 16 (32 for Confidentiality protection with the "aes-cbc" cipher) and smaller or equal to 16777215 (i.e. | | | cipher-token * ;; "des" and "3des" ciphers are obsolete. | | | /* if the client recognizes no cipher, it MUST behave as if "auth-conf" qop option wasn't provided by the server. |
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http://josefsson.org/cgi-bin/viewcvs.cgi/gsasl/lib/digest-md5/parser.c?rev=1.15&view=auto
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| | Xtreme Visual Basic Talk - RC4 Stream Cipher |
| | Using this code, i tested out the stream cipher: | | | Well, you need to read the file handling tutorial in the tutor's corner called "File I/O" by GavinO. | | | to get greater focus in on my questions reguarding the RC4 stream cipher and leave that one open to the more general topic of securing sound files. |
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http://visualbasicforum.com/archive/index.php/t-138042.html
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| | [No title] |
| | The following conditions + * apply to all code found in this distribution, be it the RC4, RSA, + * lhash, DES, etc., code; not just the SSL code. | | | defined(BSAFE) int main(int argc, char *argv[]) { printf("No RC4 support\n"); diff -ruN openssl-0.9.5a-mpe/crypto/rc5/rc5.h openssl-0.9.5a-bsafe/crypto/rc5/rc5.h --- openssl-0.9.5a-mpe/crypto/rc5/rc5.h Sat Mar 11 16:34:43 2000 +++ openssl-0.9.5a-bsafe/crypto/rc5/rc5.h Mon May 22 13:58:32 2000 @@ -63,7 +63,7 @@ extern "C" { #endif -#ifdef NO_RC5 +#if defined(NO_RC5) && !defined(BSAFE) #error RC5 is disabled. | | | defined(BSAFE) int main(int argc, char *argv[]) { printf("No RC2 support\n"); diff -ruN openssl-0.9.5a-mpe/crypto/rc4/rc4.h openssl-0.9.5a-bsafe/crypto/rc4/rc4.h --- openssl-0.9.5a-mpe/crypto/rc4/rc4.h Sat Mar 11 16:34:43 2000 +++ openssl-0.9.5a-bsafe/crypto/rc4/rc4.h Mon May 22 13:58:32 2000 @@ -63,7 +63,7 @@ extern "C" { #endif -#ifdef NO_RC4 +#if defined(NO_RC4) && !defined(BSAFE) #error RC4 is disabled. |
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http://jazz.external.hp.com/src/openssl/openssl-0.9.5a-cryptoc-4.2-patch.txt
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| | Rc4 Security |
| | Support crypto freedom by learning how to write your own strong encryption program. | | | David Sexton pseudo-random number generator Dave Sexton random number generator Wai Wan Tsang George Marsaglia Konton2 Snow 2.0 PRNG stream cipher statistical tests of randomness | | | RC4 cipher-saber cipherknight Freeh encryption cryptography ARCFOUR FBI basic RC-4 cs2 codes cs1 ciphersaber passphrase crypto ban PGP cyphersaber crypto legislation cipher |
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http://www.securitytraq.com/direct/rc4/index.shtml
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| | Redirecting |
| | We will promptly redirect you to your requested page, or if you prefer, click the link below. | | | Click here to go to: 3.6.3 What is RC4? |
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http://www.rsasecurity.com/rsalabs/faq/3-6-3.html
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