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Current Path: /usr/src/crypto/openssl/crypto/des

usr / src / crypto / openssl / crypto / des /

📁 ..
📁 asm
📄 build.info(753 B)
📄 cbc_cksm.c(1.55 KB)
📄 cbc_enc.c(423 B)
📄 cfb64ede.c(5.39 KB)
📄 cfb64enc.c(2.04 KB)
📄 cfb_enc.c(4.36 KB)
📄 des_enc.c(8.51 KB)
📄 des_local.h(8.91 KB)
📄 ecb3_enc.c(924 B)
📄 ecb_enc.c(1.14 KB)
📄 fcrypt.c(3.98 KB)
📄 fcrypt_b.c(1.93 KB)
📄 ncbc_enc.c(2.95 KB)
📄 ofb64ede.c(1.63 KB)
📄 ofb64enc.c(1.54 KB)
📄 ofb_enc.c(2.39 KB)
📄 pcbc_enc.c(1.95 KB)
📄 qud_cksm.c(2.32 KB)
📄 rand_key.c(612 B)
📄 set_key.c(14.48 KB)
📄 spr.h(8.15 KB)
📄 str2key.c(2.33 KB)
📄 xcbc_enc.c(2.94 KB)

Editing: str2key.c

/*
 * Copyright 1995-2016 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 <openssl/crypto.h>
#include "des_local.h"

void DES_string_to_key(const char *str, DES_cblock *key)
{
    DES_key_schedule ks;
    int i, length;

memset(key, 0, 8);
    length = strlen(str);
    for (i = 0; i < length; i++) {
        register unsigned char j = str[i];

if ((i % 16) < 8)
            (*key)[i % 8] ^= (j << 1);
        else {
            /* Reverse the bit order 05/05/92 eay */
            j = ((j << 4) & 0xf0) | ((j >> 4) & 0x0f);
            j = ((j << 2) & 0xcc) | ((j >> 2) & 0x33);
            j = ((j << 1) & 0xaa) | ((j >> 1) & 0x55);
            (*key)[7 - (i % 8)] ^= j;
        }
    }
    DES_set_odd_parity(key);
    DES_set_key_unchecked(key, &ks);
    DES_cbc_cksum((const unsigned char *)str, key, length, &ks, key);
    OPENSSL_cleanse(&ks, sizeof(ks));
    DES_set_odd_parity(key);
}

void DES_string_to_2keys(const char *str, DES_cblock *key1, DES_cblock *key2)
{
    DES_key_schedule ks;
    int i, length;

memset(key1, 0, 8);
    memset(key2, 0, 8);
    length = strlen(str);
    for (i = 0; i < length; i++) {
        register unsigned char j = str[i];

if ((i % 32) < 16) {
            if ((i % 16) < 8)
                (*key1)[i % 8] ^= (j << 1);
            else
                (*key2)[i % 8] ^= (j << 1);
        } else {
            j = ((j << 4) & 0xf0) | ((j >> 4) & 0x0f);
            j = ((j << 2) & 0xcc) | ((j >> 2) & 0x33);
            j = ((j << 1) & 0xaa) | ((j >> 1) & 0x55);
            if ((i % 16) < 8)
                (*key1)[7 - (i % 8)] ^= j;
            else
                (*key2)[7 - (i % 8)] ^= j;
        }
    }
    if (length <= 8)
        memcpy(key2, key1, 8);
    DES_set_odd_parity(key1);
    DES_set_odd_parity(key2);
    DES_set_key_unchecked(key1, &ks);
    DES_cbc_cksum((const unsigned char *)str, key1, length, &ks, key1);
    DES_set_key_unchecked(key2, &ks);
    DES_cbc_cksum((const unsigned char *)str, key2, length, &ks, key2);
    OPENSSL_cleanse(&ks, sizeof(ks));
    DES_set_odd_parity(key1);
    DES_set_odd_parity(key2);
}

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Editing: str2key.c

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