archived-doc-tr/reference/mcrypt/functions/mcrypt-encrypt.xml

<?xml version="1.0" encoding="utf-8"?>
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<refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.mcrypt-encrypt">
 <refnamediv>
  <refname>mcrypt_encrypt</refname>
  <refpurpose>Salt metin veriyi belirtilen bağımsız değişkenlerle şifreler
  </refpurpose>
 </refnamediv>

 <refsynopsisdiv>
  &warn.deprecated.function-7-1-0.removed-7-2-0;
 </refsynopsisdiv>

 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type class="union"><type>string</type><type>false</type></type><methodname>mcrypt_encrypt</methodname>
   <methodparam><type>string</type><parameter>şifre</parameter></methodparam>
   <methodparam><type>string</type><parameter>anahtar</parameter></methodparam>
   <methodparam><type>string</type><parameter>veri</parameter></methodparam>
   <methodparam><type>string</type><parameter>kip</parameter></methodparam>
   <methodparam choice="opt"><type>string</type><parameter>iv</parameter></methodparam>
  </methodsynopsis>
  <simpara>
   Veriyi şifreleyip döndürür.
  </simpara>
 </refsect1>

 <refsect1 role="parameters">
  &reftitle.parameters;
  <variablelist>
   <varlistentry>
    <term><parameter>şifre</parameter></term>
    <listitem>
     &mcrypt.parameter.cipher;
    </listitem>
   </varlistentry>
   <varlistentry>
    <term><parameter>anahtar</parameter></term>
    <listitem>
     <simpara>
      Veriyi şifreleyecek anahtar. Aanhtar şifre tarafından desteklenmiyorsa
      işlev bir uyarı çıktır ve &false; döndürür.
     </simpara>
     <simpara>
      Bir dizgeden bir anahtar oluşturmak için  <link linkend="ref.hash">hash</link> işlevlerini kullanmanız önerilir.
     </simpara>
    </listitem>
   </varlistentry>
   <varlistentry>
    <term><parameter>veri</parameter></term>
    <listitem>
     <simpara>
      Belirtilen <parameter>şifre</parameter> ve <parameter>kip</parameter>
      ile şifrelenecek veri. Veri uzunluğu desteklenen küme boyunun
      katlarından farklıysa eksik kısım '<literal>\0</literal>' ile
      doldurulur.
     </simpara>
     <simpara>
      Dönen şifreli veri girilen veriden daha uzun olabilir.
     </simpara>
    </listitem>
   </varlistentry>
   <varlistentry>
    <term><parameter>kip</parameter></term>
    <listitem>
     &mcrypt.parameter.mode;
    </listitem>
   </varlistentry>
   <varlistentry>
    <term><parameter>iv</parameter></term>
    <listitem>
     &mcrypt.parameter.iv.strict;
    </listitem>
   </varlistentry>
  </variablelist>
 </refsect1>

 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <simpara>
   Şifrelenmiş veriyi bir dizge olarak döndürür,&return.falseforfailure;.
  </simpara>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <example>
   <title>- <function>mcrypt_encrypt</function> örneği</title>
   <programlisting role="php">
<![CDATA[
<?php
    # --- ENCRYPTION ---

    # the key should be random binary, use scrypt, bcrypt or PBKDF2 to
    # convert a string into a key
    # key is specified using hexadecimal
    $key = pack('H*', "bcb04b7e103a0cd8b54763051cef08bc55abe029fdebae5e1d417e2ffb2a00a3");

    # show key size use either 16, 24 or 32 byte keys for AES-128, 192
    # and 256 respectively
    $key_size =  strlen($key);
    echo "Key size: " . $key_size . "\n";

    $plaintext = "This string was AES-256 / CBC / ZeroBytePadding encrypted.";

    # create a random IV to use with CBC encoding
    $iv_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CBC);
   $iv = mcrypt_create_iv($iv_size, MCRYPT_RAND);

    # creates a cipher text compatible with AES (Rijndael block size = 128)
    # to keep the text confidential
    # only suitable for encoded input that never ends with value 00h
    # (because of default zero padding)
    $ciphertext = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $key,
                                 $plaintext, MCRYPT_MODE_CBC, $iv);

    # prepend the IV for it to be available for decryption
    $ciphertext = $iv . $ciphertext;

    # encode the resulting cipher text so it can be represented by a string
    $ciphertext_base64 = base64_encode($ciphertext);

    echo  $ciphertext_base64 . "\n";

    # === WARNING ===

    # Resulting cipher text has no integrity or authenticity added
    # and is not protected against padding oracle attacks.

    # --- DECRYPTION ---

    $ciphertext_dec = base64_decode($ciphertext_base64);

    # retrieves the IV, iv_size should be created using mcrypt_get_iv_size()
    $iv_dec = substr($ciphertext_dec, 0, $iv_size);

    # retrieves the cipher text (everything except the $iv_size in the front)
    $ciphertext_dec = substr($ciphertext_dec, $iv_size);

    # may remove 00h valued characters from end of plain text
    $plaintext_dec = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key,
                                    $ciphertext_dec, MCRYPT_MODE_CBC, $iv_dec);

    echo  $plaintext_dec . "\n";
?>
]]>
   </programlisting>
   &example.outputs;
   <screen>
<![CDATA[
Key size: 32
ENJW8mS2KaJoNB5E5CoSAAu0xARgsR1bdzFWpEn+poYw45q+73az5kYi4j+0haevext1dGrcW8Qi59txfCBV8BBj3bzRP3dFCp3CPQSJ8eU=
This string was AES-256 / CBC / ZeroBytePadding encrypted.
]]>
   </screen>
  </example>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <simplelist>
   <member><function>mcrypt_decrypt</function></member>
   <member><function>mcrypt_module_open</function></member>
  </simplelist>
 </refsect1>
</refentry>
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