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/*
* Copyright 2019-2021 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
/* Dispatch functions for RC4_HMAC_MD5 cipher */
/*
* MD5 and RC4 low level APIs are deprecated for public use, but still ok for
* internal use.
*/
#include "internal/deprecated.h"
#include "cipher_rc4_hmac_md5.h"
#include "prov/implementations.h"
#include "prov/providercommon.h"
#include "prov/providercommonerr.h"
/* TODO(3.0) Figure out what flags are required */
#define RC4_HMAC_MD5_FLAGS (EVP_CIPH_STREAM_CIPHER | EVP_CIPH_VARIABLE_LENGTH \
| EVP_CIPH_FLAG_AEAD_CIPHER)
#define RC4_HMAC_MD5_KEY_BITS (16 * 8)
#define RC4_HMAC_MD5_BLOCK_BITS (1 * 8)
#define RC4_HMAC_MD5_IV_BITS 0
#define RC4_HMAC_MD5_MODE 0
#define GET_HW(ctx) ((PROV_CIPHER_HW_RC4_HMAC_MD5 *)ctx->base.hw)
static OSSL_FUNC_cipher_newctx_fn rc4_hmac_md5_newctx;
static OSSL_FUNC_cipher_freectx_fn rc4_hmac_md5_freectx;
static OSSL_FUNC_cipher_get_ctx_params_fn rc4_hmac_md5_get_ctx_params;
static OSSL_FUNC_cipher_gettable_ctx_params_fn rc4_hmac_md5_gettable_ctx_params;
static OSSL_FUNC_cipher_set_ctx_params_fn rc4_hmac_md5_set_ctx_params;
static OSSL_FUNC_cipher_settable_ctx_params_fn rc4_hmac_md5_settable_ctx_params;
static OSSL_FUNC_cipher_get_params_fn rc4_hmac_md5_get_params;
#define rc4_hmac_md5_gettable_params ossl_cipher_generic_gettable_params
#define rc4_hmac_md5_einit ossl_cipher_generic_einit
#define rc4_hmac_md5_dinit ossl_cipher_generic_dinit
#define rc4_hmac_md5_update ossl_cipher_generic_stream_update
#define rc4_hmac_md5_final ossl_cipher_generic_stream_final
#define rc4_hmac_md5_cipher ossl_cipher_generic_cipher
static void *rc4_hmac_md5_newctx(void *provctx)
{
PROV_RC4_HMAC_MD5_CTX *ctx;
if (!ossl_prov_is_running())
return NULL;
ctx = OPENSSL_zalloc(sizeof(*ctx));
if (ctx != NULL)
ossl_cipher_generic_initkey(ctx, RC4_HMAC_MD5_KEY_BITS,
RC4_HMAC_MD5_BLOCK_BITS,
RC4_HMAC_MD5_IV_BITS,
RC4_HMAC_MD5_MODE, RC4_HMAC_MD5_FLAGS,
ossl_prov_cipher_hw_rc4_hmac_md5(
RC4_HMAC_MD5_KEY_BITS
), NULL);
return ctx;
}
static void rc4_hmac_md5_freectx(void *vctx)
{
PROV_RC4_HMAC_MD5_CTX *ctx = (PROV_RC4_HMAC_MD5_CTX *)vctx;
ossl_cipher_generic_reset_ctx((PROV_CIPHER_CTX *)vctx);
OPENSSL_clear_free(ctx, sizeof(*ctx));
}
static const OSSL_PARAM rc4_hmac_md5_known_gettable_ctx_params[] = {
OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_KEYLEN, NULL),
OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_IVLEN, NULL),
OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_AEAD_TLS1_AAD_PAD, NULL),
OSSL_PARAM_END
};
const OSSL_PARAM *rc4_hmac_md5_gettable_ctx_params(ossl_unused void *provctx)
{
return rc4_hmac_md5_known_gettable_ctx_params;
}
static int rc4_hmac_md5_get_ctx_params(void *vctx, OSSL_PARAM params[])
{
PROV_RC4_HMAC_MD5_CTX *ctx = (PROV_RC4_HMAC_MD5_CTX *)vctx;
OSSL_PARAM *p;
p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_KEYLEN);
if (p != NULL && !OSSL_PARAM_set_size_t(p, ctx->base.keylen)) {
ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
return 0;
}
p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_IVLEN);
if (p != NULL && !OSSL_PARAM_set_size_t(p, ctx->base.ivlen)) {
ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
return 0;
}
p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_AEAD_TLS1_AAD_PAD);
if (p != NULL && !OSSL_PARAM_set_size_t(p, ctx->tls_aad_pad_sz)) {
ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
return 0;
}
return 1;
}
static const OSSL_PARAM rc4_hmac_md5_known_settable_ctx_params[] = {
OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_KEYLEN, NULL),
OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_IVLEN, NULL),
OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_AEAD_TLS1_AAD, NULL, 0),
OSSL_PARAM_END
};
const OSSL_PARAM *rc4_hmac_md5_settable_ctx_params(ossl_unused void *provctx)
{
return rc4_hmac_md5_known_settable_ctx_params;
}
static int rc4_hmac_md5_set_ctx_params(void *vctx, const OSSL_PARAM params[])
{
PROV_RC4_HMAC_MD5_CTX *ctx = (PROV_RC4_HMAC_MD5_CTX *)vctx;
const OSSL_PARAM *p;
size_t sz;
p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_KEYLEN);
if (p != NULL) {
if (!OSSL_PARAM_get_size_t(p, &sz)) {
ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
return 0;
}
if (ctx->base.keylen != sz) {
ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEY_LENGTH);
return 0;
}
}
p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_IVLEN);
if (p != NULL) {
if (!OSSL_PARAM_get_size_t(p, &sz)) {
ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
return 0;
}
if (ctx->base.ivlen != sz) {
ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_IV_LENGTH);
return 0;
}
}
p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_AEAD_TLS1_AAD);
if (p != NULL) {
if (p->data_type != OSSL_PARAM_OCTET_STRING) {
ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
return 0;
}
sz = GET_HW(ctx)->tls_init(&ctx->base, p->data, p->data_size);
if (sz == 0) {
ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_DATA);
return 0;
}
ctx->tls_aad_pad_sz = sz;
}
p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_AEAD_TLS1_AAD);
if (p != NULL) {
if (p->data_type != OSSL_PARAM_OCTET_STRING) {
ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
return 0;
}
GET_HW(ctx)->init_mackey(&ctx->base, p->data, p->data_size);
}
p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_TLS_VERSION);
if (p != NULL) {
if (!OSSL_PARAM_get_uint(p, &ctx->base.tlsversion)) {
ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
return 0;
}
}
return 1;
}
static int rc4_hmac_md5_get_params(OSSL_PARAM params[])
{
return ossl_cipher_generic_get_params(params, RC4_HMAC_MD5_MODE,
RC4_HMAC_MD5_FLAGS,
RC4_HMAC_MD5_KEY_BITS,
RC4_HMAC_MD5_BLOCK_BITS,
RC4_HMAC_MD5_IV_BITS);
}
const OSSL_DISPATCH ossl_rc4_hmac_ossl_md5_functions[] = {
{ OSSL_FUNC_CIPHER_NEWCTX, (void (*)(void))rc4_hmac_md5_newctx },
{ OSSL_FUNC_CIPHER_FREECTX, (void (*)(void))rc4_hmac_md5_freectx },
{ OSSL_FUNC_CIPHER_ENCRYPT_INIT, (void (*)(void))rc4_hmac_md5_einit },
{ OSSL_FUNC_CIPHER_DECRYPT_INIT, (void (*)(void))rc4_hmac_md5_dinit },
{ OSSL_FUNC_CIPHER_UPDATE, (void (*)(void))rc4_hmac_md5_update },
{ OSSL_FUNC_CIPHER_FINAL, (void (*)(void))rc4_hmac_md5_final },
{ OSSL_FUNC_CIPHER_CIPHER, (void (*)(void))rc4_hmac_md5_cipher },
{ OSSL_FUNC_CIPHER_GET_PARAMS, (void (*)(void))rc4_hmac_md5_get_params },
{ OSSL_FUNC_CIPHER_GETTABLE_PARAMS,
(void (*)(void))rc4_hmac_md5_gettable_params },
{ OSSL_FUNC_CIPHER_GET_CTX_PARAMS,
(void (*)(void))rc4_hmac_md5_get_ctx_params },
{ OSSL_FUNC_CIPHER_GETTABLE_CTX_PARAMS,
(void (*)(void))rc4_hmac_md5_gettable_ctx_params },
{ OSSL_FUNC_CIPHER_SET_CTX_PARAMS,
(void (*)(void))rc4_hmac_md5_set_ctx_params },
{ OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,
(void (*)(void))rc4_hmac_md5_settable_ctx_params },
{ 0, NULL }
};
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