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  72. ><H1
    73. 

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  74. NAME="function.openssl-pkcs7-sign"
    75. 

  75. ></A
    76. 

  76. >openssl_pkcs7_sign</H1
    77. 

  77. ><DIV
    78. 

  78. CLASS="refnamediv"
    79. 

  79. ><A
    80. 

  80. NAME="AEN68285"
    81. 

  81. ></A
    82. 

  82. ><P
    83. 

  83. >    (PHP 4 &#62;= 4.0.6)</P
    84. 

  84. >openssl_pkcs7_sign&nbsp;--&nbsp;sign an S/MIME message</DIV
    85. 

  85. ><DIV
    86. 

  86. CLASS="refsect1"
    87. 

  87. ><A
    88. 

  88. NAME="AEN68288"
    89. 

  89. ></A
    90. 

  90. ><H2
    91. 

  91. >Description</H2
    92. 

  92. >bool <B
    93. 

  93. CLASS="methodname"
    94. 

  94. >openssl_pkcs7_sign</B
    95. 

  95. > ( string infilename, string outfilename, mixed signcert, mixed privkey, array headers [, long flags [, string extracertsfilename]])<BR
    96. 

  96. ></BR
    97. 

  97. ><P
    98. 

  98. >&#13;    <B
    99. 

  99. CLASS="function"
    100. 

  100. >openssl_pkcs7_sign()</B
    101. 

  101. > takes the contents of the file
    102. 

  102.     named <TT
    103. 

  103. CLASS="parameter"
    104. 

  104. ><I
    105. 

  105. >infilename</I
    106. 

  106. ></TT
    107. 

  107. > and signs them using the
    108. 

  108.     certificate and it's matching private key specified by
    109. 

  109.     <TT
    110. 

  110. CLASS="parameter"
    111. 

  111. ><I
    112. 

  112. >signcert</I
    113. 

  113. ></TT
    114. 

  114. > and <TT
    115. 

  115. CLASS="parameter"
    116. 

  116. ><I
    117. 

  117. >privkey</I
    118. 

  118. ></TT
    119. 

  119. >
    120. 

  120.     parameters.
    121. 

  121.    </P
    122. 

  122. ><P
    123. 

  123. ><TT
    124. 

  124. CLASS="parameter"
    125. 

  125. ><I
    126. 

  126. >headers</I
    127. 

  127. ></TT
    128. 

  128. > is an array of headers that
    129. 

  129.     will be prepended to the data after it has been signed (see
    130. 

  130.     <A
    131. 

  131. HREF="function.openssl-pkcs7-encrypt.html"
    132. 

  132. ><B
    133. 

  133. CLASS="function"
    134. 

  134. >openssl_pkcs7_encrypt()</B
    135. 

  135. ></A
    136. 

  136. > for more information about
    137. 

  137.     the format of this parameter.
    138. 

  138.    </P
    139. 

  139. ><P
    140. 

  140. >&#13;    <TT
    141. 

  141. CLASS="parameter"
    142. 

  142. ><I
    143. 

  143. >flags</I
    144. 

  144. ></TT
    145. 

  145. > can be used to alter the output - see <A
    146. 

  146. HREF="ref.openssl.html#openssl.pkcs7.flags"
    147. 

  147. >PKCS7 constants</A
    148. 

  148. > - if not specified,
    149. 

  149.     it defaults to PKCS7_DETACHED.
    150. 

  150.    </P
    151. 

  151. ><P
    152. 

  152. >&#13;    <TT
    153. 

  153. CLASS="parameter"
    154. 

  154. ><I
    155. 

  155. >extracerts</I
    156. 

  156. ></TT
    157. 

  157. > specifies the name of a file containing
    158. 

  158.     a bunch of extra certificates to include in the signature which can for
    159. 

  159.     example be used to help the recipient to verify the certificate that you used.
    160. 

  160.    </P
    161. 

  161. ><P
    162. 

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    169. 

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    171. 

  171. CLASS="example"
    172. 

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    173. 

  173. NAME="AEN68328"
    174. 

  174. ></A
    175. 

  175. ><P
    176. 

  176. ><B
    177. 

  177. >Example 1. <B
    178. 

  178. CLASS="function"
    179. 

  179. >openssl_pkcs7_sign()</B
    180. 

  180. > example</B
    181. 

  181. ></P
    182. 

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    183. 

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    187. 

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    188. 

  188. ><PRE
    189. 

  189. CLASS="php"
    190. 

  190. >// the message you want to sign so that recipient can be sure it was you that
    191. 

  191. // sent it
    192. 

  192. $data = &#60;&#60;&#60;EOD
    193. 

  193. 

  194. You have my authorization to spend $10,000 on dinner expenses.
    195. 

  195. 

  196. The CEO
    197. 

  197. EOD;
    198. 

  198. // save message to file
    199. 

  199. $fp = fopen("msg.txt", "w");
    200. 

  200. fwrite($fp, $data);
    201. 

  201. fclose($fp);
    202. 

  202. // encrypt it
    203. 

  203. if (openssl_pkcs7_sign("msg.txt", "signed.txt", "mycert.pem",
    204. 

  204.     array("mycert.pem", "mypassphrase"),
    205. 

  205.     array("To" =&#62; "joes@sales.com", // keyed syntax
    206. 

  206.           "From: HQ &#60;ceo@sales.com&#62;", // indexed syntax
    207. 

  207.           "Subject" =&#62; "Eyes only"))
    208. 

  208. {
    209. 

  209.     // message signed - send it!
    210. 

  210.     exec(ini_get("sendmail_path") . " &#60; signed.txt");
    211. 

  211. }</PRE
    212. 

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    220. 

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    224. 

  224. CLASS="note"
    225. 

  225. ><P
    226. 

  226. ><B
    227. 

  227. >Note: </B
    228. 

  228. >This function was added in 4.0.6.</P
    229. 

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