223 lines
7.9 KiB
C
223 lines
7.9 KiB
C
/*
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* Copyright 2023 The Tongsuo Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://github.com/Tongsuo-Project/Tongsuo/blob/master/LICENSE.txt
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*/
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/* Dispatch functions for zuc_128_eea3 cipher */
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#include <openssl/proverr.h>
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#include "cipher_zuc_eea3.h"
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#include "prov/implementations.h"
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#include "prov/providercommon.h"
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#define ZUC_EEA3_KEYLEN (ZUC_KEY_SIZE)
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#define ZUC_EEA3_BLKLEN (1)
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#define ZUC_EEA3_IVLEN (ZUC_CTR_SIZE)
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#define ZUC_EEA3_FLAGS (PROV_CIPHER_FLAG_VARIABLE_LENGTH)
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static OSSL_FUNC_cipher_newctx_fn zuc_128_eea3_newctx;
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static OSSL_FUNC_cipher_freectx_fn zuc_128_eea3_freectx;
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static OSSL_FUNC_cipher_get_params_fn zuc_128_eea3_get_params;
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static OSSL_FUNC_cipher_get_ctx_params_fn zuc_128_eea3_get_ctx_params;
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static OSSL_FUNC_cipher_set_ctx_params_fn zuc_128_eea3_set_ctx_params;
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static OSSL_FUNC_cipher_gettable_ctx_params_fn zuc_128_eea3_gettable_ctx_params;
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static OSSL_FUNC_cipher_settable_ctx_params_fn zuc_128_eea3_settable_ctx_params;
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#define zuc_128_eea3_cipher ossl_cipher_generic_cipher
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#define zuc_128_eea3_update ossl_cipher_generic_stream_update
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#define zuc_128_eea3_final ossl_cipher_generic_stream_final
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#define zuc_128_eea3_gettable_params ossl_cipher_generic_gettable_params
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static void *zuc_128_eea3_newctx(void *provctx)
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{
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PROV_ZUC_EEA3_CTX *ctx;
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if (!ossl_prov_is_running())
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return NULL;
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ctx = OPENSSL_zalloc(sizeof(*ctx));
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if (ctx != NULL)
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ossl_cipher_generic_initkey(ctx, ZUC_EEA3_KEYLEN * 8,
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ZUC_EEA3_BLKLEN * 8,
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ZUC_EEA3_IVLEN * 8,
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0, ZUC_EEA3_FLAGS,
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ossl_prov_cipher_hw_zuc_128_eea3(ZUC_EEA3_KEYLEN * 8),
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NULL);
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return ctx;
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}
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static void zuc_128_eea3_freectx(void *vctx)
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{
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PROV_CIPHER_HW_ZUC_EEA3 *hw;
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PROV_ZUC_EEA3_CTX *ctx = (PROV_ZUC_EEA3_CTX *)vctx;
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if (ctx != NULL) {
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hw = (PROV_CIPHER_HW_ZUC_EEA3 *)((PROV_CIPHER_CTX *)vctx)->hw;
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hw->cleanup(ctx);
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ossl_cipher_generic_reset_ctx((PROV_CIPHER_CTX *)vctx);
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OPENSSL_clear_free(ctx, sizeof(*ctx));
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}
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}
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static int zuc_128_eea3_get_params(OSSL_PARAM params[])
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{
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return ossl_cipher_generic_get_params(params, 0, ZUC_EEA3_FLAGS,
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ZUC_EEA3_KEYLEN * 8,
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ZUC_EEA3_BLKLEN * 8,
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ZUC_EEA3_IVLEN * 8);
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}
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static int zuc_128_eea3_get_ctx_params(void *vctx, OSSL_PARAM params[])
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{
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OSSL_PARAM *p;
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PROV_ZUC_EEA3_CTX *ctx = (PROV_ZUC_EEA3_CTX *)vctx;
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p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_IVLEN);
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if (p != NULL && !OSSL_PARAM_set_size_t(p, ZUC_EEA3_IVLEN)) {
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ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
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return 0;
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}
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p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_KEYLEN);
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if (p != NULL && !OSSL_PARAM_set_size_t(p, ZUC_EEA3_KEYLEN)) {
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ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
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return 0;
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}
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p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_UPDATED_IV);
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if (p != NULL) {
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if (p->data_size < ZUC_EEA3_IVLEN) {
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ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_IV_LENGTH);
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return 0;
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}
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if (!OSSL_PARAM_set_octet_string(p, ctx->base.iv, ZUC_EEA3_IVLEN)
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&& !OSSL_PARAM_set_octet_ptr(p, &ctx->base.iv, ZUC_EEA3_IVLEN)) {
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ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
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return 0;
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}
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}
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return 1;
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}
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static const OSSL_PARAM zuc_128_eea3_known_gettable_ctx_params[] = {
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OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_KEYLEN, NULL),
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OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_IVLEN, NULL),
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OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_UPDATED_IV, NULL),
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OSSL_PARAM_END
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};
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const OSSL_PARAM *zuc_128_eea3_gettable_ctx_params(ossl_unused void *cctx,
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ossl_unused void *provctx)
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{
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return zuc_128_eea3_known_gettable_ctx_params;
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}
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static int zuc_128_eea3_set_ctx_params(void *vctx, const OSSL_PARAM params[])
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{
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const OSSL_PARAM *p;
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size_t len;
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if (params == NULL)
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return 1;
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p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_KEYLEN);
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if (p != NULL) {
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if (!OSSL_PARAM_get_size_t(p, &len)) {
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ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
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return 0;
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}
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if (len != ZUC_EEA3_KEYLEN) {
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ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEY_LENGTH);
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return 0;
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}
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}
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p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_IVLEN);
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if (p != NULL) {
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if (!OSSL_PARAM_get_size_t(p, &len)) {
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ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GET_PARAMETER);
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return 0;
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}
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if (len != ZUC_EEA3_IVLEN) {
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ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_IV_LENGTH);
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return 0;
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}
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}
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return 1;
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}
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static const OSSL_PARAM zuc_128_eea3_known_settable_ctx_params[] = {
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OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_KEYLEN, NULL),
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OSSL_PARAM_size_t(OSSL_CIPHER_PARAM_IVLEN, NULL),
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OSSL_PARAM_END
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};
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const OSSL_PARAM *zuc_128_eea3_settable_ctx_params(ossl_unused void *cctx,
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ossl_unused void *provctx)
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{
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return zuc_128_eea3_known_settable_ctx_params;
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}
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int ossl_zuc_128_eea3_einit(void *vctx, const unsigned char *key, size_t keylen,
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const unsigned char *iv, size_t ivlen,
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const OSSL_PARAM params[])
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{
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int ret;
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PROV_CIPHER_CTX *ctx;
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PROV_CIPHER_HW_ZUC_EEA3 *hw;
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/* The generic function checks for ossl_prov_is_running() */
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ret = ossl_cipher_generic_einit(vctx, key, keylen, iv, ivlen, NULL);
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if (ret && iv != NULL) {
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ctx = (PROV_CIPHER_CTX *)vctx;
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hw = (PROV_CIPHER_HW_ZUC_EEA3 *)ctx->hw;
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hw->initiv(ctx);
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}
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if (ret && !zuc_128_eea3_set_ctx_params(vctx, params))
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ret = 0;
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return ret;
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}
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int ossl_zuc_128_eea3_dinit(void *vctx, const unsigned char *key, size_t keylen,
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const unsigned char *iv, size_t ivlen,
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const OSSL_PARAM params[])
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{
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int ret;
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PROV_CIPHER_CTX *ctx;
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PROV_CIPHER_HW_ZUC_EEA3 *hw;
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/* The generic function checks for ossl_prov_is_running() */
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ret = ossl_cipher_generic_dinit(vctx, key, keylen, iv, ivlen, NULL);
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if (ret && iv != NULL) {
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ctx = (PROV_CIPHER_CTX *)vctx;
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hw = (PROV_CIPHER_HW_ZUC_EEA3 *)ctx->hw;
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hw->initiv(ctx);
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}
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if (ret && !zuc_128_eea3_set_ctx_params(vctx, params))
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ret = 0;
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return ret;
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}
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/* ossl_zuc_128_eea3_functions */
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const OSSL_DISPATCH ossl_zuc_128_eea3_functions[] = {
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{ OSSL_FUNC_CIPHER_NEWCTX, (void (*)(void))zuc_128_eea3_newctx },
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{ OSSL_FUNC_CIPHER_FREECTX, (void (*)(void))zuc_128_eea3_freectx },
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{ OSSL_FUNC_CIPHER_ENCRYPT_INIT, (void (*)(void))ossl_zuc_128_eea3_einit },
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{ OSSL_FUNC_CIPHER_DECRYPT_INIT, (void (*)(void))ossl_zuc_128_eea3_dinit },
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{ OSSL_FUNC_CIPHER_UPDATE, (void (*)(void))zuc_128_eea3_update },
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{ OSSL_FUNC_CIPHER_FINAL, (void (*)(void))zuc_128_eea3_final },
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{ OSSL_FUNC_CIPHER_CIPHER, (void (*)(void))zuc_128_eea3_cipher},
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{ OSSL_FUNC_CIPHER_GET_PARAMS, (void (*)(void))zuc_128_eea3_get_params },
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{ OSSL_FUNC_CIPHER_GETTABLE_PARAMS,
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(void (*)(void))zuc_128_eea3_gettable_params },
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{ OSSL_FUNC_CIPHER_GET_CTX_PARAMS,
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(void (*)(void))zuc_128_eea3_get_ctx_params },
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{ OSSL_FUNC_CIPHER_GETTABLE_CTX_PARAMS,
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(void (*)(void))zuc_128_eea3_gettable_ctx_params },
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{ OSSL_FUNC_CIPHER_SET_CTX_PARAMS,
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(void (*)(void))zuc_128_eea3_set_ctx_params },
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{ OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,
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(void (*)(void))zuc_128_eea3_settable_ctx_params },
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{ 0, NULL }
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};
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