[331] | 1 | /*
|
---|
| 2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
|
---|
| 3 | *
|
---|
| 4 | * Licensed under the OpenSSL license (the "License"). You may not use
|
---|
| 5 | * this file except in compliance with the License. You can obtain a copy
|
---|
| 6 | * in the file LICENSE in the source distribution or at
|
---|
| 7 | * https://www.openssl.org/source/license.html
|
---|
| 8 | */
|
---|
| 9 |
|
---|
| 10 | #include <stdio.h>
|
---|
| 11 | #include "internal/cryptlib.h"
|
---|
| 12 |
|
---|
| 13 | #ifndef OPENSSL_NO_RC4
|
---|
| 14 |
|
---|
| 15 | # include <openssl/evp.h>
|
---|
| 16 | # include <openssl/objects.h>
|
---|
| 17 | # include <openssl/rc4.h>
|
---|
| 18 |
|
---|
| 19 | # include "internal/evp_int.h"
|
---|
| 20 |
|
---|
| 21 | typedef struct {
|
---|
| 22 | RC4_KEY ks; /* working key */
|
---|
| 23 | } EVP_RC4_KEY;
|
---|
| 24 |
|
---|
| 25 | # define data(ctx) ((EVP_RC4_KEY *)EVP_CIPHER_CTX_get_cipher_data(ctx))
|
---|
| 26 |
|
---|
| 27 | static int rc4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
---|
| 28 | const unsigned char *iv, int enc);
|
---|
| 29 | static int rc4_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
---|
| 30 | const unsigned char *in, size_t inl);
|
---|
| 31 | static const EVP_CIPHER r4_cipher = {
|
---|
| 32 | NID_rc4,
|
---|
| 33 | 1, EVP_RC4_KEY_SIZE, 0,
|
---|
| 34 | EVP_CIPH_VARIABLE_LENGTH,
|
---|
| 35 | rc4_init_key,
|
---|
| 36 | rc4_cipher,
|
---|
| 37 | NULL,
|
---|
| 38 | sizeof(EVP_RC4_KEY),
|
---|
| 39 | NULL,
|
---|
| 40 | NULL,
|
---|
| 41 | NULL,
|
---|
| 42 | NULL
|
---|
| 43 | };
|
---|
| 44 |
|
---|
| 45 | static const EVP_CIPHER r4_40_cipher = {
|
---|
| 46 | NID_rc4_40,
|
---|
| 47 | 1, 5 /* 40 bit */ , 0,
|
---|
| 48 | EVP_CIPH_VARIABLE_LENGTH,
|
---|
| 49 | rc4_init_key,
|
---|
| 50 | rc4_cipher,
|
---|
| 51 | NULL,
|
---|
| 52 | sizeof(EVP_RC4_KEY),
|
---|
| 53 | NULL,
|
---|
| 54 | NULL,
|
---|
| 55 | NULL,
|
---|
| 56 | NULL
|
---|
| 57 | };
|
---|
| 58 |
|
---|
| 59 | const EVP_CIPHER *EVP_rc4(void)
|
---|
| 60 | {
|
---|
| 61 | return (&r4_cipher);
|
---|
| 62 | }
|
---|
| 63 |
|
---|
| 64 | const EVP_CIPHER *EVP_rc4_40(void)
|
---|
| 65 | {
|
---|
| 66 | return (&r4_40_cipher);
|
---|
| 67 | }
|
---|
| 68 |
|
---|
| 69 | static int rc4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
|
---|
| 70 | const unsigned char *iv, int enc)
|
---|
| 71 | {
|
---|
| 72 | RC4_set_key(&data(ctx)->ks, EVP_CIPHER_CTX_key_length(ctx), key);
|
---|
| 73 | return 1;
|
---|
| 74 | }
|
---|
| 75 |
|
---|
| 76 | static int rc4_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
|
---|
| 77 | const unsigned char *in, size_t inl)
|
---|
| 78 | {
|
---|
| 79 | RC4(&data(ctx)->ks, inl, in, out);
|
---|
| 80 | return 1;
|
---|
| 81 | }
|
---|
| 82 | #endif
|
---|