1 files changed, 94 insertions, 0 deletions
diff --git a/crypto/openssl/providers/implementations/ciphers/cipher_aes_cts.inc b/crypto/openssl/providers/implementations/ciphers/cipher_aes_cts.inc
new file mode 100644
index 000000000000..1fb5ec3553f9
--- /dev/null
+++ b/crypto/openssl/providers/implementations/ciphers/cipher_aes_cts.inc
@@ -0,0 +1,94 @@
+/*
+ * Copyright 2020-2021 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 AES CBC CTS ciphers */
+
+#include <openssl/proverr.h>
+#include "cipher_cts.h"
+
+#define CTS_FLAGS PROV_CIPHER_FLAG_CTS
+
+static OSSL_FUNC_cipher_encrypt_init_fn aes_cbc_cts_einit;
+static OSSL_FUNC_cipher_decrypt_init_fn aes_cbc_cts_dinit;
+static OSSL_FUNC_cipher_get_ctx_params_fn aes_cbc_cts_get_ctx_params;
+static OSSL_FUNC_cipher_set_ctx_params_fn aes_cbc_cts_set_ctx_params;
+static OSSL_FUNC_cipher_gettable_ctx_params_fn aes_cbc_cts_gettable_ctx_params;
+static OSSL_FUNC_cipher_settable_ctx_params_fn aes_cbc_cts_settable_ctx_params;
+
+CIPHER_DEFAULT_GETTABLE_CTX_PARAMS_START(aes_cbc_cts)
+OSSL_PARAM_utf8_string(OSSL_CIPHER_PARAM_CTS_MODE, NULL, 0),
+CIPHER_DEFAULT_GETTABLE_CTX_PARAMS_END(aes_cbc_cts)
+
+static int aes_cbc_cts_einit(void *ctx, const unsigned char *key, size_t keylen,
+                             const unsigned char *iv, size_t ivlen,
+                             const OSSL_PARAM params[])
+{
+    if (!ossl_cipher_generic_einit(ctx, key, keylen, iv, ivlen, NULL))
+        return 0;
+    return aes_cbc_cts_set_ctx_params(ctx, params);
+}
+
+static int aes_cbc_cts_dinit(void *ctx, const unsigned char *key, size_t keylen,
+                             const unsigned char *iv, size_t ivlen,
+                             const OSSL_PARAM params[])
+{
+    if (!ossl_cipher_generic_dinit(ctx, key, keylen, iv, ivlen, NULL))
+        return 0;
+    return aes_cbc_cts_set_ctx_params(ctx, params);
+}
+
+static int aes_cbc_cts_get_ctx_params(void *vctx, OSSL_PARAM params[])
+{
+    PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;
+    OSSL_PARAM *p;
+
+    p = OSSL_PARAM_locate(params, OSSL_CIPHER_PARAM_CTS_MODE);
+    if (p != NULL) {
+        const char *name = ossl_cipher_cbc_cts_mode_id2name(ctx->cts_mode);
+
+        if (name == NULL || !OSSL_PARAM_set_utf8_string(p, name)) {
+            ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
+            return 0;
+        }
+    }
+    return ossl_cipher_generic_get_ctx_params(vctx, params);
+}
+
+CIPHER_DEFAULT_SETTABLE_CTX_PARAMS_START(aes_cbc_cts)
+OSSL_PARAM_utf8_string(OSSL_CIPHER_PARAM_CTS_MODE, NULL, 0),
+CIPHER_DEFAULT_SETTABLE_CTX_PARAMS_END(aes_cbc_cts)
+
+static int aes_cbc_cts_set_ctx_params(void *vctx, const OSSL_PARAM params[])
+{
+    PROV_CIPHER_CTX *ctx = (PROV_CIPHER_CTX *)vctx;
+    const OSSL_PARAM *p;
+    int id;
+
+    p = OSSL_PARAM_locate_const(params, OSSL_CIPHER_PARAM_CTS_MODE);
+    if (p != NULL) {
+        if (p->data_type != OSSL_PARAM_UTF8_STRING)
+            goto err;
+        id = ossl_cipher_cbc_cts_mode_name2id(p->data);
+        if (id < 0)
+            goto err;
+
+        ctx->cts_mode = (unsigned int)id;
+    }
+    return ossl_cipher_generic_set_ctx_params(vctx, params);
+err:
+    ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_SET_PARAMETER);
+    return 0;
+}
+
+/* ossl_aes256cbc_cts_functions */
+IMPLEMENT_cts_cipher(aes, AES, cbc, CBC, CTS_FLAGS, 256, 128, 128, block)
+/* ossl_aes192cbc_cts_functions */
+IMPLEMENT_cts_cipher(aes, AES, cbc, CBC, CTS_FLAGS, 192, 128, 128, block)
+/* ossl_aes128cbc_cts_functions */
+IMPLEMENT_cts_cipher(aes, AES, cbc, CBC, CTS_FLAGS, 128, 128, 128, block)