用BASH解密PHP openssl_seal

Question

我正在嘗試解密一些通過PHP openssl_seal加密的數據。 似乎沒有任何涉及網上bash的示例（花了一些時間研究這個問題），所以我認為這篇文章也將對其他人有所幫助。

據我了解，我必須先使用私鑰解密用於實際數據的RC4加密的密鑰。 數據本身以及RC4密鑰均以base64格式存儲。

數據：

Y3jrrTI96HVK7aMR/LrLnCGsqlQNvpQN8TTEoClak2GHk1MMV5/Ig6CD5EuojJaI
gey79XGjf8S9IqLsJ/MxOjODSFM48D+G0lbBW9GEOUFB027pfuHDhyMoTsxjEFBG
XIz5

Envkey：

JJXy5kX9RNSd90BgRSKUX1AGZhwbzetVHKAZTv1/HCBEPGqaGvoWdxaiA8UaJAAr
mS7Sh3pbMm1GN41BYi2r4m9VONknIqn3VB+cikA7ZRxmKOVhRuJTgdjWhrCMyxls
1osAsC8lIFkLo13Z1v8IZAXKGIdyO86WHXzfQku8HAE=

測試私鑰（此私鑰是加密的，在問題的最底部添加了非加密的私鑰）：

-----BEGIN RSA PRIVATE KEY-----
Proc-Type: 4,ENCRYPTED
DEK-Info: DES-EDE3-CBC,CBBD77CC40F395BB
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-----END RSA PRIVATE KEY-----

所以我在做：

從base64解碼（嘗試在沒有base64的情況下獲取數據，結果仍然相同/使用base64來確保編碼沒有問題等）：

base64 --decode envkey> envun

用我的私鑰解密envkey：

openssl rsautl -decrypt -inkey private.pem -in / tmp / envun -out / tmp / envdec

獲取解密的二進制（？）密鑰並使用它來解密RC4中的數據：

openssl enc -d -rc4 -in加密-out解密-pass文件：envdec

。 。

但是，我得到的是：

壞魔術數

有什么建議嗎？

非加密私鑰：

-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----

加密方式：

$pub_key_ids = [];
$sealed = '';
$pub_key_string = file_get_contents("/usr/local/ssl/public.pem");
$pub_key = openssl_get_publickey($pub_key_string);
if ($pub_key) {
    $pub_key_ids[] = $pub_key;
}
if (count($pub_key_ids)) {
    if (openssl_seal($params['deployment_settings'], $sealed, $ekeys, $pub_key_ids) !== false) {
        $data = base64_encode($sealed);
        $envkey = base64_encode($ekeys[0]);
    }
    foreach ($pub_key_ids as $pub_key_id) {
        openssl_free_key($pub_key_id);
    }
}

Answer 1

作為bash的問題，我們可以使用一些bashisms ：

一體：

#!/bin/bash

openssl rc4 -d -in <(
  base64 -i --decode <<eodatas
    Y3jrrTI96HVK7aMR/LrLnCGsqlQNvpQN8TTEoClak2GHk1MMV5/Ig6CD5EuojJaIgey7
    9XGjf8S9IqLsJ/MxOjODSFM48D+G0lbBW9GEOUFB027pfuHDhyMoTsxjEFBGXIz5
eodatas
    ) -iv 0 -K "$(
        hexdump -v -e '/1 "%02X"' < <(
            openssl rsautl -decrypt -inkey <(cat <<eoprivkey
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
eoprivkey
        ) -in <(base64 -i --decode <<eoenvkey
    JJXy5kX9RNSd90BgRSKUX1AGZhwbzetVHKAZTv1/HCBEPGqaGvoWdxaiA8UaJAAr
    mS7Sh3pbMm1GN41BYi2r4m9VONknIqn3VB+cikA7ZRxmKOVhRuJTgdjWhrCMyxls
    1osAsC8lIFkLo13Z1v8IZAXKGIdyO86WHXzfQku8HAE=
eoenvkey
        ) ) )"
printf "\nResult: %s\n" $?

這可能輸出：

A combination of genetic and environmental factors play a role in the development of schizophrenia.
Result: 0

通過使用功能

這可能更有用：

#!/bin/bash

declare Data=./datas
declare Envkey=./envkey
declare PrivateKey=./privkey

b64Dec() { base64 -i --decode                   ; }

hxDump() { hexdump -e '/1 "%02X"'               ; }

rsaDec() { openssl rsautl -decrypt -inkey $1 -in $2        ; }

rc4Dec() {
    openssl rc4 -d -iv 0 -K "$1"
    printf >&2 "\nResult: %s\n" $?
}
rc4Enc() {
    openssl rc4 -iv 0 -K "$1"
    printf >&2 "\nResult: %s\n" $?
}

declare Key="$(hxDump  < <(rsaDec $PrivateKey <(b64Dec <$Envkey)))"

b64Dec <$Data | rc4Dec $Key

rc4Enc $Key <<eoGeorgOrwellQuote | base64
In our age there is no such thing as 'keeping out of politics.' All issues
are political issues, and politics itself is a mass of lies, evasions,
folly, hatred and schizophrenia.
                        -- George Orwell --
eoGeorgOrwellQuote

這可能會產生：

A combination of genetic and environmental factors play a role in the development of schizophrenia.
Result: 0

Result: 0
azaorSotoXpM/OoK+v/WnyGivBoGpd0dpDbC5H1XlHmJwV0RGt3NkqSfrUOuz42Sh7/04z2yaYi1
drngOLg2cxzPUBs0oyiWwUCnVdOMfF9an2j7N/HBg2o7Us9+B0YEFYy5oLISIRtZguZx2M6qYA9N
EJVDUG7mCL041jCszPAIKreV7PPnRCWt0MLyunv6MDSwJ3dppTUYcgXAL2vDxcIs/GYmbWh8sjgo
/t9fqxCM56a8xwUpityQh1JukHoFQyPzhOYUfNg85I2azhyLoX2OlQ==

Answer 2

使用openssl native命令，您可以執行以下操作：

base64 --decode envkey > envun
openssl rsautl -decrypt -inkey private.pem -in envun -out envdec
KEY=$(cat envdec |hexdump -v -e '/1 "%02X"')
openssl rc4 -d -a -in encrypted -iv 0 -K "$KEY"

您必須使用“ -a”標志，因為您的內容是base64編碼的。

您可以在命令行模式下使用帶有“ -q”的php來抑制標題。

  php -q decrypt.php data.txt envkey private.pem

crypto.php的內容

<?php
$pkeyid=openssl_get_privatekey(file_get_contents($argv[3]));

$content=base64_decode(file_get_contents($argv[1]));
$envkey=base64_decode(file_get_contents($argv[2]));

if (openssl_open($content, $data, $envkey, $pkeyid)) {
    echo "$data\n";
} else {
    echo openssl_error_string()."\n";
}

openssl_free_key($pkeyid);

這將比使用openssl native命令容易得多。