1 files changed, 114 insertions, 0 deletions
diff --git a/providers/implementations/ciphers/cipher_tdes.c b/providers/implementations/ciphers/cipher_tdes.c
new file mode 100644
index 0000000000..9c032902e9
--- /dev/null
+++ b/providers/implementations/ciphers/cipher_tdes.c
@@ -0,0 +1,114 @@
+/*
+ * 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 "prov/ciphercommon.h"
+#include "cipher_tdes.h"
+#include "crypto/rand.h"
+#include "internal/provider_algs.h"
+#include "internal/providercommonerr.h"
+
+void *tdes_newctx(void *provctx, int mode, size_t kbits, size_t blkbits,
+                  size_t ivbits, uint64_t flags, const PROV_CIPHER_HW *hw)
+{
+    PROV_TDES_CTX *tctx = OPENSSL_zalloc(sizeof(*tctx));
+
+    if (tctx != NULL)
+        cipher_generic_initkey(tctx, kbits, blkbits, ivbits, mode, flags, hw,
+                               provctx);
+    return tctx;
+}
+
+void tdes_freectx(void *vctx)
+{
+    PROV_TDES_CTX *ctx = (PROV_TDES_CTX *)vctx;
+
+    OPENSSL_clear_free(ctx,  sizeof(*ctx));
+}
+
+static int tdes_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 (!cipher_generic_initiv(ctx, iv, ivlen))
+            return 0;
+    }
+
+    if (key != NULL) {
+        if (keylen != ctx->keylen) {
+            ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEYLEN);
+            return 0;
+        }
+        return ctx->hw->init(ctx, key, ctx->keylen);
+    }
+    return 1;
+}
+
+int tdes_einit(void *vctx, const unsigned char *key, size_t keylen,
+               const unsigned char *iv, size_t ivlen)
+{
+    return tdes_init(vctx, key, keylen, iv, ivlen, 1);
+}
+
+int tdes_dinit(void *vctx, const unsigned char *key, size_t keylen,
+               const unsigned char *iv, size_t ivlen)
+{
+    return tdes_init(vctx, key, keylen, iv, ivlen, 0);
+}
+
+static int tdes_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);
+    if (kl >= 16)
+        DES_set_odd_parity(deskey + 1);
+    if (kl >= 24) {
+        DES_set_odd_parity(deskey + 2);
+        return 1;
+    }
+    return 0;
+}
+
+CIPHER_DEFAULT_GETTABLE_CTX_PARAMS_START(tdes)
+    OSSL_PARAM_octet_string(OSSL_CIPHER_PARAM_RANDOM_KEY, NULL, 0),
+CIPHER_DEFAULT_GETTABLE_CTX_PARAMS_END(tdes)
+
+int tdes_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 && !tdes_generatekey(ctx, p->data)) {
+        ERR_raise(ERR_LIB_PROV, PROV_R_FAILED_TO_GENERATE_KEY);
+        return 0;
+    }
+    return 1;
+}
+
+/*
+ * TODO(3.0) - ECB mode does not use an IV - but existing test code is setting
+ * an IV. Fixing this could potentially make applications break.
+ */
+
+/* tdes_ede3_ecb_functions */
+IMPLEMENT_tdes_cipher(ede3, EDE3, ecb, ECB, TDES_FLAGS, 64*3, 64, 64, block);
+/* tdes_ede3_cbc_functions */
+IMPLEMENT_tdes_cipher(ede3, EDE3, cbc, CBC, TDES_FLAGS, 64*3, 64, 64, block);