--- /dev/null
+/*
+ * 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
+ */
+
+#include "cipher_locl.h"
+#include "cipher_des.h"
+#include "internal/rand_int.h"
+#include "internal/provider_algs.h"
+#include "internal/providercommonerr.h"
+
+/* TODO(3.0) Figure out what flags need to be here */
+#define DES_FLAGS (EVP_CIPH_RAND_KEY)
+
+static OSSL_OP_cipher_freectx_fn des_freectx;
+static OSSL_OP_cipher_encrypt_init_fn des_einit;
+static OSSL_OP_cipher_decrypt_init_fn des_dinit;
+static OSSL_OP_cipher_get_ctx_params_fn des_get_ctx_params;
+static OSSL_OP_cipher_gettable_ctx_params_fn des_gettable_ctx_params;
+
+static void *des_newctx(void *provctx, size_t kbits, size_t blkbits,
+ size_t ivbits, unsigned int mode, uint64_t flags,
+ const PROV_CIPHER_HW *hw)
+{
+ PROV_DES_CTX *ctx = OPENSSL_zalloc(sizeof(*ctx));
+
+ if (ctx != NULL)
+ cipher_generic_initkey(ctx, kbits, blkbits, ivbits, mode, flags, hw,
+ provctx);
+ return ctx;
+}
+
+static void des_freectx(void *vctx)
+{
+ PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;
+
+ OPENSSL_clear_free(ctx, sizeof(*ctx));
+}
+
+static int des_init(void *vctx, const unsigned char *key, size_t keylen,
+ const unsigned char *iv, size_t ivlen, int enc)
+{
+ PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;
+
+ ctx->enc = enc;
+
+ if (iv != NULL) {
+ if (ivlen != ctx->ivlen) {
+ ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_IVLEN);
+ return 0;
+ }
+ memcpy(ctx->iv, iv, ivlen);
+ }
+
+ if (key != NULL) {
+ if (keylen != ctx->keylen) {
+ ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEYLEN);
+ return 0;
+ }
+ return ctx->hw->init(ctx, key, keylen);
+ }
+ return 1;
+}
+
+static int des_einit(void *vctx, const unsigned char *key, size_t keylen,
+ const unsigned char *iv, size_t ivlen)
+{
+ return des_init(vctx, key, keylen, iv, ivlen, 1);
+}
+
+static int des_dinit(void *vctx, const unsigned char *key, size_t keylen,
+ const unsigned char *iv, size_t ivlen)
+{
+ return des_init(vctx, key, keylen, iv, ivlen, 0);
+}
+
+static int des_generatekey(PROV_CIPHER_CTX *ctx, void *ptr)
+{
+
+ DES_cblock *deskey = ptr;
+ size_t kl = ctx->keylen;
+
+ if (kl == 0 || rand_priv_bytes_ex(ctx->libctx, ptr, kl) <= 0)
+ return 0;
+ DES_set_odd_parity(deskey);
+ return 1;
+}
+
+CIPHER_DEFAULT_GETTABLE_CTX_PARAMS_START(des)
+ OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_RANDOM_KEY, NULL, 0),
+CIPHER_DEFAULT_GETTABLE_CTX_PARAMS_END(des)
+
+static int des_get_ctx_params(void *vctx, OSSL_PARAM params[])
+{
+ PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;
+ OSSL_PARAM *p;
+
+ if (!cipher_generic_get_ctx_params(vctx, params))
+ return 0;
+
+ p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_RANDOM_KEY);
+ if (p != NULL && !des_generatekey(ctx, p->data)) {
+ ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GENERATE_KEY);
+ return 0;
+ }
+ return 1;
+}
+
+#define IMPLEMENT_des_cipher(type, lcmode, UCMODE, flags, \
+ kbits, blkbits, ivbits, block) \
+static OSSL_OP_cipher_newctx_fn type##_##lcmode##_newctx; \
+static void *des_##lcmode##_newctx(void *provctx) \
+{ \
+ return des_newctx(provctx, kbits, blkbits, ivbits, \
+ EVP_CIPH_##UCMODE##_MODE, flags, \
+ PROV_CIPHER_HW_des_##lcmode()); \
+} \
+static OSSL_OP_cipher_get_params_fn des_##lcmode##_get_params; \
+static int des_##lcmode##_get_params(OSSL_PARAM params[]) \
+{ \
+ return cipher_generic_get_params(params, EVP_CIPH_##UCMODE##_MODE, flags, \
+ kbits, blkbits, ivbits); \
+} \
+const OSSL_DISPATCH des_##lcmode##_functions[] = { \
+ { OSSL_FUNC_CIPHER_ENCRYPT_INIT, (void (*)(void))des_einit }, \
+ { OSSL_FUNC_CIPHER_DECRYPT_INIT, (void (*)(void))des_dinit }, \
+ { OSSL_FUNC_CIPHER_UPDATE, \
+ (void (*)(void))cipher_generic_##block##_update }, \
+ { OSSL_FUNC_CIPHER_FINAL, (void (*)(void))cipher_generic_##block##_final },\
+ { OSSL_FUNC_CIPHER_CIPHER, (void (*)(void))cipher_generic_cipher }, \
+ { OSSL_FUNC_CIPHER_NEWCTX, \
+ (void (*)(void))des_##lcmode##_newctx }, \
+ { OSSL_FUNC_CIPHER_FREECTX, (void (*)(void))des_freectx }, \
+ { OSSL_FUNC_CIPHER_GET_PARAMS, \
+ (void (*)(void))des_##lcmode##_get_params }, \
+ { OSSL_FUNC_CIPHER_GETTABLE_PARAMS, \
+ (void (*)(void))cipher_generic_gettable_params }, \
+ { OSSL_FUNC_CIPHER_GET_CTX_PARAMS, (void (*)(void))des_get_ctx_params }, \
+ { OSSL_FUNC_CIPHER_GETTABLE_CTX_PARAMS, \
+ (void (*)(void))des_gettable_ctx_params }, \
+ { OSSL_FUNC_CIPHER_SET_CTX_PARAMS, \
+ (void (*)(void))cipher_generic_set_ctx_params }, \
+ { OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS, \
+ (void (*)(void))cipher_generic_settable_ctx_params }, \
+ { 0, NULL } \
+}
+
+/* des_ecb_functions */
+IMPLEMENT_des_cipher(des, ecb, ECB, DES_FLAGS, 64, 64, 0, block);
+/* des_cbc_functions */
+IMPLEMENT_des_cipher(des, cbc, CBC, DES_FLAGS, 64, 64, 64, block);
+/* des_ofb64_functions */
+IMPLEMENT_des_cipher(des, ofb64, OFB, DES_FLAGS, 64, 8, 64, stream);
+/* des_cfb64_functions */
+IMPLEMENT_des_cipher(des, cfb64, CFB, DES_FLAGS, 64, 8, 64, stream);
+/* des_cfb1_functions */
+IMPLEMENT_des_cipher(des, cfb1, CFB, DES_FLAGS, 64, 8, 64, stream);
+/* des_cfb8_functions */
+IMPLEMENT_des_cipher(des, cfb8, CFB, DES_FLAGS, 64, 8, 64, stream);
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