Latest update.

2020-01-17 19:45:12 +09:00
parent 016df9f433
commit 0f7abb4eb6
1100 changed files with 47785 additions and 16292 deletions
@@ -0,0 +1,69 @@
+/*
+ * 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 "prov/ciphercommon_ccm.h"
+
+int ccm_generic_setiv(PROV_CCM_CTX *ctx, const unsigned char *nonce,
+                      size_t nlen, size_t mlen)
+{
+    return CRYPTO_ccm128_setiv(&ctx->ccm_ctx, nonce, nlen, mlen) == 0;
+}
+
+int ccm_generic_setaad(PROV_CCM_CTX *ctx, const unsigned char *aad, size_t alen)
+{
+    CRYPTO_ccm128_aad(&ctx->ccm_ctx, aad, alen);
+    return 1;
+}
+
+int ccm_generic_gettag(PROV_CCM_CTX *ctx, unsigned char *tag, size_t tlen)
+{
+    return CRYPTO_ccm128_tag(&ctx->ccm_ctx, tag, tlen) > 0;
+}
+
+int ccm_generic_auth_encrypt(PROV_CCM_CTX *ctx, const unsigned char *in,
+                             unsigned char *out, size_t len,
+                             unsigned char *tag, size_t taglen)
+{
+    int rv;
+
+    if (ctx->str != NULL)
+        rv = CRYPTO_ccm128_encrypt_ccm64(&ctx->ccm_ctx, in,
+                                         out, len, ctx->str) == 0;
+    else
+        rv = CRYPTO_ccm128_encrypt(&ctx->ccm_ctx, in, out, len) == 0;
+
+    if (rv == 1 && tag != NULL)
+        rv = (CRYPTO_ccm128_tag(&ctx->ccm_ctx, tag, taglen) > 0);
+    return rv;
+}
+
+int ccm_generic_auth_decrypt(PROV_CCM_CTX *ctx, const unsigned char *in,
+                             unsigned char *out, size_t len,
+                             unsigned char *expected_tag, size_t taglen)
+{
+    int rv = 0;
+
+    if (ctx->str != NULL)
+        rv = CRYPTO_ccm128_decrypt_ccm64(&ctx->ccm_ctx, in, out, len,
+                                         ctx->str) == 0;
+    else
+        rv = CRYPTO_ccm128_decrypt(&ctx->ccm_ctx, in, out, len) == 0;
+    if (rv) {
+        unsigned char tag[16];
+
+        if (!CRYPTO_ccm128_tag(&ctx->ccm_ctx, tag, taglen)
+            || CRYPTO_memcmp(tag, expected_tag, taglen) != 0)
+            rv = 0;
+    }
+    if (rv == 0)
+        OPENSSL_cleanse(out, len);
+    return rv;
+}
+