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Title "EVP_RC4 3"
EVP_RC4 3 "2023-05-30" "3.0.9" "OpenSSL"
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"NAME"
EVP_rc4, EVP_rc4_40, EVP_rc4_hmac_md5 \- EVP RC4 stream cipher
"SYNOPSIS"
Header "SYNOPSIS" .Vb 1 #include <openssl/evp.h> \& const EVP_CIPHER *EVP_rc4(void); const EVP_CIPHER *EVP_rc4_40(void); const EVP_CIPHER *EVP_rc4_hmac_md5(void); .Ve
"DESCRIPTION"
Header "DESCRIPTION" The \s-1RC4\s0 stream cipher for \s-1EVP.\s0
"EVP_rc4()" 4
Item "EVP_rc4()" \s-1RC4\s0 stream cipher. This is a variable key length cipher with a default key length of 128 bits.
"EVP_rc4_40()" 4
Item "EVP_rc4_40()" \s-1RC4\s0 stream cipher with 40 bit key length. .Sp \s-1WARNING:\s0 this function is obsolete. Its usage should be replaced with the \fBEVP_rc4() and the EVP_CIPHER_CTX_set_key_length() functions.
"EVP_rc4_hmac_md5()" 4
Item "EVP_rc4_hmac_md5()" Authenticated encryption with the \s-1RC4\s0 stream cipher with \s-1MD5\s0 as \s-1HMAC.\s0 .Sp \s-1WARNING:\s0 this is not intended for usage outside of \s-1TLS\s0 and requires calling of some undocumented ctrl functions. These ciphers do not conform to the \s-1EVP AEAD\s0 interface.
"NOTES"
Header "NOTES" Developers should be aware of the negative performance implications of calling these functions multiple times and should consider using \fBEVP_CIPHER_fetch\|(3) instead. See \*(L"Performance\*(R" in crypto\|(7) for further information.
"RETURN VALUES"
Header "RETURN VALUES" These functions return an \s-1EVP_CIPHER\s0 structure that contains the implementation of the symmetric cipher. See EVP_CIPHER_meth_new\|(3) for details of the \s-1EVP_CIPHER\s0 structure.
"SEE ALSO"
Header "SEE ALSO" \fBevp\|(7), \fBEVP_EncryptInit\|(3), \fBEVP_CIPHER_meth_new\|(3)
"COPYRIGHT"
Header "COPYRIGHT" Copyright 2017-2023 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the Apache License 2.0 (the \*(L"License\*(R"). You may not use this file except in compliance with the License. You can obtain a copy in the file \s-1LICENSE\s0 in the source distribution or at <https://www.openssl.org/source/license.html>.