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Diffstat (limited to 'openssl/trunk/doc/crypto/rc4.pod')
-rw-r--r-- | openssl/trunk/doc/crypto/rc4.pod | 62 |
1 files changed, 0 insertions, 62 deletions
diff --git a/openssl/trunk/doc/crypto/rc4.pod b/openssl/trunk/doc/crypto/rc4.pod deleted file mode 100644 index b6d3a434..00000000 --- a/openssl/trunk/doc/crypto/rc4.pod +++ /dev/null @@ -1,62 +0,0 @@ -=pod - -=head1 NAME - -RC4_set_key, RC4 - RC4 encryption - -=head1 SYNOPSIS - - #include <openssl/rc4.h> - - void RC4_set_key(RC4_KEY *key, int len, const unsigned char *data); - - void RC4(RC4_KEY *key, unsigned long len, const unsigned char *indata, - unsigned char *outdata); - -=head1 DESCRIPTION - -This library implements the Alleged RC4 cipher, which is described for -example in I<Applied Cryptography>. It is believed to be compatible -with RC4[TM], a proprietary cipher of RSA Security Inc. - -RC4 is a stream cipher with variable key length. Typically, 128 bit -(16 byte) keys are used for strong encryption, but shorter insecure -key sizes have been widely used due to export restrictions. - -RC4 consists of a key setup phase and the actual encryption or -decryption phase. - -RC4_set_key() sets up the B<RC4_KEY> B<key> using the B<len> bytes long -key at B<data>. - -RC4() encrypts or decrypts the B<len> bytes of data at B<indata> using -B<key> and places the result at B<outdata>. Repeated RC4() calls with -the same B<key> yield a continuous key stream. - -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. - -Applications should use the higher level functions -L<EVP_EncryptInit(3)|EVP_EncryptInit(3)> -etc. instead of calling the RC4 functions directly. - -=head1 RETURN VALUES - -RC4_set_key() and RC4() do not return values. - -=head1 NOTE - -Certain conditions have to be observed to securely use stream ciphers. -It is not permissible to perform multiple encryptions using the same -key stream. - -=head1 SEE ALSO - -L<blowfish(3)|blowfish(3)>, L<des(3)|des(3)>, L<rc2(3)|rc2(3)> - -=head1 HISTORY - -RC4_set_key() and RC4() are available in all versions of SSLeay and OpenSSL. - -=cut |