From aa4d426b4d3527d7e166df1a05058c9a4a0f6683 Mon Sep 17 00:00:00 2001
From: Wojtek Kosior <wk@koszkonutek-tmp.pl.eu.org>
Date: Fri, 30 Apr 2021 00:33:56 +0200
Subject: initial/final commit

---
 openssl-1.1.0h/crypto/evp/p5_crpt.c | 103 ++++++++++++++++++++++++++++++++++++
 1 file changed, 103 insertions(+)
 create mode 100644 openssl-1.1.0h/crypto/evp/p5_crpt.c

(limited to 'openssl-1.1.0h/crypto/evp/p5_crpt.c')

diff --git a/openssl-1.1.0h/crypto/evp/p5_crpt.c b/openssl-1.1.0h/crypto/evp/p5_crpt.c
new file mode 100644
index 0000000..7e55d0b
--- /dev/null
+++ b/openssl-1.1.0h/crypto/evp/p5_crpt.c
@@ -0,0 +1,103 @@
+/*
+ * Copyright 1999-2016 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 <stdlib.h>
+#include "internal/cryptlib.h"
+#include <openssl/x509.h>
+#include <openssl/evp.h>
+
+/*
+ * Doesn't do anything now: Builtin PBE algorithms in static table.
+ */
+
+void PKCS5_PBE_add(void)
+{
+}
+
+int PKCS5_PBE_keyivgen(EVP_CIPHER_CTX *cctx, const char *pass, int passlen,
+                       ASN1_TYPE *param, const EVP_CIPHER *cipher,
+                       const EVP_MD *md, int en_de)
+{
+    EVP_MD_CTX *ctx;
+    unsigned char md_tmp[EVP_MAX_MD_SIZE];
+    unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH];
+    int i;
+    PBEPARAM *pbe;
+    int saltlen, iter;
+    unsigned char *salt;
+    int mdsize;
+    int rv = 0;
+
+    /* Extract useful info from parameter */
+    if (param == NULL || param->type != V_ASN1_SEQUENCE ||
+        param->value.sequence == NULL) {
+        EVPerr(EVP_F_PKCS5_PBE_KEYIVGEN, EVP_R_DECODE_ERROR);
+        return 0;
+    }
+
+    pbe = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(PBEPARAM), param);
+    if (pbe == NULL) {
+        EVPerr(EVP_F_PKCS5_PBE_KEYIVGEN, EVP_R_DECODE_ERROR);
+        return 0;
+    }
+
+    if (!pbe->iter)
+        iter = 1;
+    else
+        iter = ASN1_INTEGER_get(pbe->iter);
+    salt = pbe->salt->data;
+    saltlen = pbe->salt->length;
+
+    if (!pass)
+        passlen = 0;
+    else if (passlen == -1)
+        passlen = strlen(pass);
+
+    ctx = EVP_MD_CTX_new();
+    if (ctx == NULL) {
+        EVPerr(EVP_F_PKCS5_PBE_KEYIVGEN, ERR_R_MALLOC_FAILURE);
+        goto err;
+    }
+
+    if (!EVP_DigestInit_ex(ctx, md, NULL))
+        goto err;
+    if (!EVP_DigestUpdate(ctx, pass, passlen))
+        goto err;
+    if (!EVP_DigestUpdate(ctx, salt, saltlen))
+        goto err;
+    PBEPARAM_free(pbe);
+    if (!EVP_DigestFinal_ex(ctx, md_tmp, NULL))
+        goto err;
+    mdsize = EVP_MD_size(md);
+    if (mdsize < 0)
+        return 0;
+    for (i = 1; i < iter; i++) {
+        if (!EVP_DigestInit_ex(ctx, md, NULL))
+            goto err;
+        if (!EVP_DigestUpdate(ctx, md_tmp, mdsize))
+            goto err;
+        if (!EVP_DigestFinal_ex(ctx, md_tmp, NULL))
+            goto err;
+    }
+    OPENSSL_assert(EVP_CIPHER_key_length(cipher) <= (int)sizeof(md_tmp));
+    memcpy(key, md_tmp, EVP_CIPHER_key_length(cipher));
+    OPENSSL_assert(EVP_CIPHER_iv_length(cipher) <= 16);
+    memcpy(iv, md_tmp + (16 - EVP_CIPHER_iv_length(cipher)),
+           EVP_CIPHER_iv_length(cipher));
+    if (!EVP_CipherInit_ex(cctx, cipher, NULL, key, iv, en_de))
+        goto err;
+    OPENSSL_cleanse(md_tmp, EVP_MAX_MD_SIZE);
+    OPENSSL_cleanse(key, EVP_MAX_KEY_LENGTH);
+    OPENSSL_cleanse(iv, EVP_MAX_IV_LENGTH);
+    rv = 1;
+ err:
+    EVP_MD_CTX_free(ctx);
+    return rv;
+}
-- 
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