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/*
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* Copyright 2019 The OpenSSL 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://www.openssl.org/source/license.html
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*/
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/* Dispatch functions for RC4_HMAC_MD5 cipher */
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/*
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* RC4 low level APIs are deprecated for public use, but still ok for internal
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* use.
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*/
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#include "internal/deprecated.h"
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#include "cipher_rc4_hmac_md5.h"
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#include "prov/implementations.h"
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#include "prov/providercommonerr.h"
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/* TODO(3.0) Figure out what flags are required */
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#define RC4_HMAC_MD5_FLAGS (EVP_CIPH_STREAM_CIPHER | EVP_CIPH_VARIABLE_LENGTH \
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| EVP_CIPH_FLAG_AEAD_CIPHER)
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#define RC4_HMAC_MD5_KEY_BITS (16 * 8)
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#define RC4_HMAC_MD5_BLOCK_BITS (1 * 8)
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#define RC4_HMAC_MD5_IV_BITS 0
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#define RC4_HMAC_MD5_MODE 0
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#define GET_HW(ctx) ((PROV_CIPHER_HW_RC4_HMAC_MD5 *)ctx->base.hw)
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static OSSL_OP_cipher_newctx_fn rc4_hmac_md5_newctx;
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static OSSL_OP_cipher_freectx_fn rc4_hmac_md5_freectx;
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static OSSL_OP_cipher_get_ctx_params_fn rc4_hmac_md5_get_ctx_params;
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static OSSL_OP_cipher_gettable_ctx_params_fn rc4_hmac_md5_gettable_ctx_params;
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static OSSL_OP_cipher_set_ctx_params_fn rc4_hmac_md5_set_ctx_params;
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static OSSL_OP_cipher_settable_ctx_params_fn rc4_hmac_md5_settable_ctx_params;
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static OSSL_OP_cipher_get_params_fn rc4_hmac_md5_get_params;
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#define rc4_hmac_md5_gettable_params cipher_generic_gettable_params
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#define rc4_hmac_md5_einit cipher_generic_einit
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#define rc4_hmac_md5_dinit cipher_generic_dinit
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#define rc4_hmac_md5_update cipher_generic_stream_update
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#define rc4_hmac_md5_final cipher_generic_stream_final
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#define rc4_hmac_md5_cipher cipher_generic_cipher
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static void *rc4_hmac_md5_newctx(void *provctx)
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{
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PROV_RC4_HMAC_MD5_CTX *ctx = OPENSSL_zalloc(sizeof(*ctx));
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if (ctx != NULL)
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cipher_generic_initkey(ctx, RC4_HMAC_MD5_KEY_BITS,
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RC4_HMAC_MD5_BLOCK_BITS,
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RC4_HMAC_MD5_IV_BITS,
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RC4_HMAC_MD5_MODE, RC4_HMAC_MD5_FLAGS,
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PROV_CIPHER_HW_rc4_hmac_md5(RC4_HMAC_MD5_KEY_BITS),
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NULL);
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return ctx;
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}
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static void rc4_hmac_md5_freectx(void *vctx)
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{
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PROV_RC4_HMAC_MD5_CTX *ctx = (PROV_RC4_HMAC_MD5_CTX *)vctx;
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OPENSSL_clear_free(ctx, sizeof(*ctx));
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}
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static const OSSL_PARAM rc4_hmac_md5_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_AEAD_TLS1_AAD_PAD, NULL),
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OSSL_PARAM_END
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};
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const OSSL_PARAM *rc4_hmac_md5_gettable_ctx_params(void)
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{
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return rc4_hmac_md5_known_gettable_ctx_params;
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}
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static int rc4_hmac_md5_get_ctx_params(void *vctx, OSSL_PARAM params[])
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{
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PROV_RC4_HMAC_MD5_CTX *ctx = (PROV_RC4_HMAC_MD5_CTX *)vctx;
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OSSL_PARAM *p;
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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, ctx->base.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_IVLEN);
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if (p != NULL && !OSSL_PARAM_set_size_t(p, ctx->base.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_AEAD_TLS1_AAD_PAD);
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if (p != NULL && !OSSL_PARAM_set_size_t(p, ctx->tls_aad_pad_sz)) {
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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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return 1;
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}
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static const OSSL_PARAM rc4_hmac_md5_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_octet_string(OSSL_CIPHER_PARAM_AEAD_TLS1_AAD, NULL, 0),
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OSSL_PARAM_END
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};
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const OSSL_PARAM *rc4_hmac_md5_settable_ctx_params(void)
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{
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return rc4_hmac_md5_known_settable_ctx_params;
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}
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static int rc4_hmac_md5_set_ctx_params(void *vctx, const OSSL_PARAM params[])
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{
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PROV_RC4_HMAC_MD5_CTX *ctx = (PROV_RC4_HMAC_MD5_CTX *)vctx;
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const OSSL_PARAM *p;
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size_t sz;
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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, &sz)) {
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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 (ctx->base.keylen != sz) {
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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, &sz)) {
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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 (ctx->base.ivlen != sz) {
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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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p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_AEAD_TLS1_AAD);
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if (p != NULL) {
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if (p->data_type != OSSL_PARAM_OCTET_STRING) {
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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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sz = GET_HW(ctx)->tls_init(&ctx->base, p->data, p->data_size);
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if (sz == 0) {
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ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_DATA);
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return 0;
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}
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ctx->tls_aad_pad_sz = sz;
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}
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p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_AEAD_TLS1_AAD);
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if (p != NULL) {
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if (p->data_type != OSSL_PARAM_OCTET_STRING) {
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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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GET_HW(ctx)->init_mackey(&ctx->base, p->data, p->data_size);
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}
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return 1;
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}
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static int rc4_hmac_md5_get_params(OSSL_PARAM params[])
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{
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return cipher_generic_get_params(params, RC4_HMAC_MD5_MODE,
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RC4_HMAC_MD5_FLAGS,
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RC4_HMAC_MD5_KEY_BITS,
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RC4_HMAC_MD5_BLOCK_BITS,
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RC4_HMAC_MD5_IV_BITS);
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}
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const OSSL_DISPATCH rc4_hmac_md5_functions[] = {
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{ OSSL_FUNC_CIPHER_NEWCTX, (void (*)(void))rc4_hmac_md5_newctx },
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{ OSSL_FUNC_CIPHER_FREECTX, (void (*)(void))rc4_hmac_md5_freectx },
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{ OSSL_FUNC_CIPHER_ENCRYPT_INIT, (void (*)(void))rc4_hmac_md5_einit },
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{ OSSL_FUNC_CIPHER_DECRYPT_INIT, (void (*)(void))rc4_hmac_md5_dinit },
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{ OSSL_FUNC_CIPHER_UPDATE, (void (*)(void))rc4_hmac_md5_update },
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{ OSSL_FUNC_CIPHER_FINAL, (void (*)(void))rc4_hmac_md5_final },
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{ OSSL_FUNC_CIPHER_CIPHER, (void (*)(void))rc4_hmac_md5_cipher },
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{ OSSL_FUNC_CIPHER_GET_PARAMS, (void (*)(void))rc4_hmac_md5_get_params },
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{ OSSL_FUNC_CIPHER_GETTABLE_PARAMS,
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(void (*)(void))rc4_hmac_md5_gettable_params },
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{ OSSL_FUNC_CIPHER_GET_CTX_PARAMS,
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(void (*)(void))rc4_hmac_md5_get_ctx_params },
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{ OSSL_FUNC_CIPHER_GETTABLE_CTX_PARAMS,
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(void (*)(void))rc4_hmac_md5_gettable_ctx_params },
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{ OSSL_FUNC_CIPHER_SET_CTX_PARAMS,
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(void (*)(void))rc4_hmac_md5_set_ctx_params },
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{ OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS,
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(void (*)(void))rc4_hmac_md5_settable_ctx_params },
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{ 0, NULL }
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};
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