+/*
+ * Copyright 2019 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 */
+
+#include "cipher_rc4_hmac_md5.h"
+#include "prov/implementations.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_OP_cipher_newctx_fn rc4_hmac_md5_newctx;
+static OSSL_OP_cipher_freectx_fn rc4_hmac_md5_freectx;
+static OSSL_OP_cipher_get_ctx_params_fn rc4_hmac_md5_get_ctx_params;
+static OSSL_OP_cipher_gettable_ctx_params_fn rc4_hmac_md5_gettable_ctx_params;
+static OSSL_OP_cipher_set_ctx_params_fn rc4_hmac_md5_set_ctx_params;
+static OSSL_OP_cipher_settable_ctx_params_fn rc4_hmac_md5_settable_ctx_params;
+static OSSL_OP_cipher_get_params_fn rc4_hmac_md5_get_params;
+#define rc4_hmac_md5_gettable_params cipher_generic_gettable_params
+#define rc4_hmac_md5_einit cipher_generic_einit
+#define rc4_hmac_md5_dinit cipher_generic_dinit
+#define rc4_hmac_md5_update cipher_generic_stream_update
+#define rc4_hmac_md5_final cipher_generic_stream_final
+#define rc4_hmac_md5_cipher cipher_generic_cipher
+
+static void *rc4_hmac_md5_newctx(void *provctx)
+{
+ PROV_RC4_HMAC_MD5_CTX *ctx = OPENSSL_zalloc(sizeof(*ctx));
+
+ if (ctx != NULL)
+ 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,
+ 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;
+
+ 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(void)
+{
+ 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(void)
+{
+ 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);
+ }
+ return 1;
+}
+
+static int rc4_hmac_md5_get_params(OSSL_PARAM params[])
+{
+ return 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 rc4_hmac_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 }
+};