1 files changed, 127 insertions, 0 deletions
diff --git a/roms/edk2/CryptoPkg/Library/OpensslLib/openssl/crypto/hmac/hm_ameth.c b/roms/edk2/CryptoPkg/Library/OpensslLib/openssl/crypto/hmac/hm_ameth.c
new file mode 100644
index 000000000..638f61b58
--- /dev/null
+++ b/roms/edk2/CryptoPkg/Library/OpensslLib/openssl/crypto/hmac/hm_ameth.c
@@ -0,0 +1,127 @@
+/*
+ * Copyright 2007-2018 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (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 <stdio.h>
+#include "internal/cryptlib.h"
+#include <openssl/evp.h>
+#include "crypto/asn1.h"
+#include "crypto/evp.h"
+
+/*
+ * HMAC "ASN1" method. This is just here to indicate the maximum HMAC output
+ * length and to free up an HMAC key.
+ */
+
+static int hmac_size(const EVP_PKEY *pkey)
+{
+    return EVP_MAX_MD_SIZE;
+}
+
+static void hmac_key_free(EVP_PKEY *pkey)
+{
+    ASN1_OCTET_STRING *os = EVP_PKEY_get0(pkey);
+    if (os) {
+        if (os->data)
+            OPENSSL_cleanse(os->data, os->length);
+        ASN1_OCTET_STRING_free(os);
+    }
+}
+
+static int hmac_pkey_ctrl(EVP_PKEY *pkey, int op, long arg1, void *arg2)
+{
+    switch (op) {
+    case ASN1_PKEY_CTRL_DEFAULT_MD_NID:
+        *(int *)arg2 = NID_sha256;
+        return 1;
+
+    default:
+        return -2;
+    }
+}
+
+static int hmac_pkey_public_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
+{
+    return ASN1_OCTET_STRING_cmp(EVP_PKEY_get0(a), EVP_PKEY_get0(b));
+}
+
+static int hmac_set_priv_key(EVP_PKEY *pkey, const unsigned char *priv,
+                             size_t len)
+{
+    ASN1_OCTET_STRING *os;
+
+    if (pkey->pkey.ptr != NULL)
+        return 0;
+
+    os = ASN1_OCTET_STRING_new();
+    if (os == NULL)
+        return 0;
+
+
+    if (!ASN1_OCTET_STRING_set(os, priv, len)) {
+        ASN1_OCTET_STRING_free(os);
+        return 0;
+    }
+
+    pkey->pkey.ptr = os;
+    return 1;
+}
+
+static int hmac_get_priv_key(const EVP_PKEY *pkey, unsigned char *priv,
+                             size_t *len)
+{
+    ASN1_OCTET_STRING *os = (ASN1_OCTET_STRING *)pkey->pkey.ptr;
+
+    if (priv == NULL) {
+        *len = ASN1_STRING_length(os);
+        return 1;
+    }
+
+    if (os == NULL || *len < (size_t)ASN1_STRING_length(os))
+        return 0;
+
+    *len = ASN1_STRING_length(os);
+    memcpy(priv, ASN1_STRING_get0_data(os), *len);
+
+    return 1;
+}
+
+const EVP_PKEY_ASN1_METHOD hmac_asn1_meth = {
+    EVP_PKEY_HMAC,
+    EVP_PKEY_HMAC,
+    0,
+
+    "HMAC",
+    "OpenSSL HMAC method",
+
+    0, 0, hmac_pkey_public_cmp, 0,
+
+    0, 0, 0,
+
+    hmac_size,
+    0, 0,
+    0, 0, 0, 0, 0, 0, 0,
+
+    hmac_key_free,
+    hmac_pkey_ctrl,
+    NULL,
+    NULL,
+
+    NULL,
+    NULL,
+    NULL,
+
+    NULL,
+    NULL,
+    NULL,
+
+    hmac_set_priv_key,
+    NULL,
+    hmac_get_priv_key,
+    NULL,
+};