1 files changed, 301 insertions, 0 deletions

diff --git a/roms/edk2/CryptoPkg/Library/OpensslLib/openssl/crypto/evp/digest.c b/roms/edk2/CryptoPkg/Library/OpensslLib/openssl/crypto/evp/digest.c
new file mode 100644
index 000000000..d1bfa274c
--- /dev/null
+++ b/roms/edk2/CryptoPkg/Library/OpensslLib/openssl/crypto/evp/digest.c
@@ -0,0 +1,301 @@
+/*
+ * Copyright 1995-2019 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/objects.h>
+#include <openssl/evp.h>
+#include <openssl/engine.h>
+#include "crypto/evp.h"
+#include "evp_local.h"
+
+/* This call frees resources associated with the context */
+int EVP_MD_CTX_reset(EVP_MD_CTX *ctx)
+{
+    if (ctx == NULL)
+        return 1;
+
+    /*
+     * Don't assume ctx->md_data was cleaned in EVP_Digest_Final, because
+     * sometimes only copies of the context are ever finalised.
+     */
+    if (ctx->digest && ctx->digest->cleanup
+        && !EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_CLEANED))
+        ctx->digest->cleanup(ctx);
+    if (ctx->digest && ctx->digest->ctx_size && ctx->md_data
+        && !EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_REUSE)) {
+        OPENSSL_clear_free(ctx->md_data, ctx->digest->ctx_size);
+    }
+    /*
+     * pctx should be freed by the user of EVP_MD_CTX
+     * if EVP_MD_CTX_FLAG_KEEP_PKEY_CTX is set
+     */
+    if (!EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX))
+        EVP_PKEY_CTX_free(ctx->pctx);
+#ifndef OPENSSL_NO_ENGINE
+    ENGINE_finish(ctx->engine);
+#endif
+    OPENSSL_cleanse(ctx, sizeof(*ctx));
+
+    return 1;
+}
+
+EVP_MD_CTX *EVP_MD_CTX_new(void)
+{
+    return OPENSSL_zalloc(sizeof(EVP_MD_CTX));
+}
+
+void EVP_MD_CTX_free(EVP_MD_CTX *ctx)
+{
+    EVP_MD_CTX_reset(ctx);
+    OPENSSL_free(ctx);
+}
+
+int EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type)
+{
+    EVP_MD_CTX_reset(ctx);
+    return EVP_DigestInit_ex(ctx, type, NULL);
+}
+
+int EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *impl)
+{
+    EVP_MD_CTX_clear_flags(ctx, EVP_MD_CTX_FLAG_CLEANED);
+#ifndef OPENSSL_NO_ENGINE
+    /*
+     * Whether it's nice or not, "Inits" can be used on "Final"'d contexts so
+     * this context may already have an ENGINE! Try to avoid releasing the
+     * previous handle, re-querying for an ENGINE, and having a
+     * reinitialisation, when it may all be unnecessary.
+     */
+    if (ctx->engine && ctx->digest &&
+        (type == NULL || (type->type == ctx->digest->type)))
+        goto skip_to_init;
+    if (type) {
+        /*
+         * Ensure an ENGINE left lying around from last time is cleared (the
+         * previous check attempted to avoid this if the same ENGINE and
+         * EVP_MD could be used).
+         */
+        ENGINE_finish(ctx->engine);
+        if (impl != NULL) {
+            if (!ENGINE_init(impl)) {
+                EVPerr(EVP_F_EVP_DIGESTINIT_EX, EVP_R_INITIALIZATION_ERROR);
+                return 0;
+            }
+        } else {
+            /* Ask if an ENGINE is reserved for this job */
+            impl = ENGINE_get_digest_engine(type->type);
+        }
+        if (impl != NULL) {
+            /* There's an ENGINE for this job ... (apparently) */
+            const EVP_MD *d = ENGINE_get_digest(impl, type->type);
+
+            if (d == NULL) {
+                EVPerr(EVP_F_EVP_DIGESTINIT_EX, EVP_R_INITIALIZATION_ERROR);
+                ENGINE_finish(impl);
+                return 0;
+            }
+            /* We'll use the ENGINE's private digest definition */
+            type = d;
+            /*
+             * Store the ENGINE functional reference so we know 'type' came
+             * from an ENGINE and we need to release it when done.
+             */
+            ctx->engine = impl;
+        } else
+            ctx->engine = NULL;
+    } else {
+        if (!ctx->digest) {
+            EVPerr(EVP_F_EVP_DIGESTINIT_EX, EVP_R_NO_DIGEST_SET);
+            return 0;
+        }
+        type = ctx->digest;
+    }
+#endif
+    if (ctx->digest != type) {
+        if (ctx->digest && ctx->digest->ctx_size) {
+            OPENSSL_clear_free(ctx->md_data, ctx->digest->ctx_size);
+            ctx->md_data = NULL;
+        }
+        ctx->digest = type;
+        if (!(ctx->flags & EVP_MD_CTX_FLAG_NO_INIT) && type->ctx_size) {
+            ctx->update = type->update;
+            ctx->md_data = OPENSSL_zalloc(type->ctx_size);
+            if (ctx->md_data == NULL) {
+                EVPerr(EVP_F_EVP_DIGESTINIT_EX, ERR_R_MALLOC_FAILURE);
+                return 0;
+            }
+        }
+    }
+#ifndef OPENSSL_NO_ENGINE
+ skip_to_init:
+#endif
+    if (ctx->pctx) {
+        int r;
+        r = EVP_PKEY_CTX_ctrl(ctx->pctx, -1, EVP_PKEY_OP_TYPE_SIG,
+                              EVP_PKEY_CTRL_DIGESTINIT, 0, ctx);
+        if (r <= 0 && (r != -2))
+            return 0;
+    }
+    if (ctx->flags & EVP_MD_CTX_FLAG_NO_INIT)
+        return 1;
+    return ctx->digest->init(ctx);
+}
+
+int EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *data, size_t count)
+{
+    if (count == 0)
+        return 1;
+
+    return ctx->update(ctx, data, count);
+}
+
+/* The caller can assume that this removes any secret data from the context */
+int EVP_DigestFinal(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *size)
+{
+    int ret;
+    ret = EVP_DigestFinal_ex(ctx, md, size);
+    EVP_MD_CTX_reset(ctx);
+    return ret;
+}
+
+/* The caller can assume that this removes any secret data from the context */
+int EVP_DigestFinal_ex(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *size)
+{
+    int ret;
+
+    OPENSSL_assert(ctx->digest->md_size <= EVP_MAX_MD_SIZE);
+    ret = ctx->digest->final(ctx, md);
+    if (size != NULL)
+        *size = ctx->digest->md_size;
+    if (ctx->digest->cleanup) {
+        ctx->digest->cleanup(ctx);
+        EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_CLEANED);
+    }
+    OPENSSL_cleanse(ctx->md_data, ctx->digest->ctx_size);
+    return ret;
+}
+
+int EVP_DigestFinalXOF(EVP_MD_CTX *ctx, unsigned char *md, size_t size)
+{
+    int ret = 0;
+
+    if (ctx->digest->flags & EVP_MD_FLAG_XOF
+        && size <= INT_MAX
+        && ctx->digest->md_ctrl(ctx, EVP_MD_CTRL_XOF_LEN, (int)size, NULL)) {
+        ret = ctx->digest->final(ctx, md);
+
+        if (ctx->digest->cleanup != NULL) {
+            ctx->digest->cleanup(ctx);
+            EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_CLEANED);
+        }
+        OPENSSL_cleanse(ctx->md_data, ctx->digest->ctx_size);
+    } else {
+        EVPerr(EVP_F_EVP_DIGESTFINALXOF, EVP_R_NOT_XOF_OR_INVALID_LENGTH);
+    }
+
+    return ret;
+}
+
+int EVP_MD_CTX_copy(EVP_MD_CTX *out, const EVP_MD_CTX *in)
+{
+    EVP_MD_CTX_reset(out);
+    return EVP_MD_CTX_copy_ex(out, in);
+}
+
+int EVP_MD_CTX_copy_ex(EVP_MD_CTX *out, const EVP_MD_CTX *in)
+{
+    unsigned char *tmp_buf;
+    if ((in == NULL) || (in->digest == NULL)) {
+        EVPerr(EVP_F_EVP_MD_CTX_COPY_EX, EVP_R_INPUT_NOT_INITIALIZED);
+        return 0;
+    }
+#ifndef OPENSSL_NO_ENGINE
+    /* Make sure it's safe to copy a digest context using an ENGINE */
+    if (in->engine && !ENGINE_init(in->engine)) {
+        EVPerr(EVP_F_EVP_MD_CTX_COPY_EX, ERR_R_ENGINE_LIB);
+        return 0;
+    }
+#endif
+
+    if (out->digest == in->digest) {
+        tmp_buf = out->md_data;
+        EVP_MD_CTX_set_flags(out, EVP_MD_CTX_FLAG_REUSE);
+    } else
+        tmp_buf = NULL;
+    EVP_MD_CTX_reset(out);
+    memcpy(out, in, sizeof(*out));
+
+    /* copied EVP_MD_CTX should free the copied EVP_PKEY_CTX */
+    EVP_MD_CTX_clear_flags(out, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX);
+
+    /* Null these variables, since they are getting fixed up
+     * properly below.  Anything else may cause a memleak and/or
+     * double free if any of the memory allocations below fail
+     */
+    out->md_data = NULL;
+    out->pctx = NULL;
+
+    if (in->md_data && out->digest->ctx_size) {
+        if (tmp_buf)
+            out->md_data = tmp_buf;
+        else {
+            out->md_data = OPENSSL_malloc(out->digest->ctx_size);
+            if (out->md_data == NULL) {
+                EVPerr(EVP_F_EVP_MD_CTX_COPY_EX, ERR_R_MALLOC_FAILURE);
+                return 0;
+            }
+        }
+        memcpy(out->md_data, in->md_data, out->digest->ctx_size);
+    }
+
+    out->update = in->update;
+
+    if (in->pctx) {
+        out->pctx = EVP_PKEY_CTX_dup(in->pctx);
+        if (!out->pctx) {
+            EVP_MD_CTX_reset(out);
+            return 0;
+        }
+    }
+
+    if (out->digest->copy)
+        return out->digest->copy(out, in);
+
+    return 1;
+}
+
+int EVP_Digest(const void *data, size_t count,
+               unsigned char *md, unsigned int *size, const EVP_MD *type,
+               ENGINE *impl)
+{
+    EVP_MD_CTX *ctx = EVP_MD_CTX_new();
+    int ret;
+
+    if (ctx == NULL)
+        return 0;
+    EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_ONESHOT);
+    ret = EVP_DigestInit_ex(ctx, type, impl)
+        && EVP_DigestUpdate(ctx, data, count)
+        && EVP_DigestFinal_ex(ctx, md, size);
+    EVP_MD_CTX_free(ctx);
+
+    return ret;
+}
+
+int EVP_MD_CTX_ctrl(EVP_MD_CTX *ctx, int cmd, int p1, void *p2)
+{
+    if (ctx->digest && ctx->digest->md_ctrl) {
+        int ret = ctx->digest->md_ctrl(ctx, cmd, p1, p2);
+        if (ret <= 0)
+            return 0;
+        return 1;
+    }
+    return 0;
+}