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我们有一个使用 Symantec 的 PGP Universal Web Messenger 的系统。

这意味着电子邮件是使用来自 pkcs12 证书的 s/mime 加密发送给我的。

我在阅读 PHP 中的消息时遇到了一些麻烦。

我有所有的 imap 代码,但现在我如何读取加密的 p7m 附件。它只是 Base64 编码和签名吗?

编辑:我有公钥。

这是哑剧信息:-

Content-Type: application/pkcs7-mime; smime-type=enveloped-data;\r\n\tname="Message.p7m"\r\nContent-Transfer-Encoding: BASE64\r\nContent-Disposition: attachment; filename="Message.p7m"
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P7M 文件类型主要与PKCS #7 MIME Message. 请参阅RFC 2311 中的第 3.2 节

3.2 The application/pkcs7-mime Type

    The application/pkcs7-mime type is used to carry PKCS #7 objects of
    several types including envelopedData and signedData. The details of
    constructing these entities is described in subsequent sections. This
    section describes the general characteristics of the
    application/pkcs7-mime type.
    
    This MIME type always carries a single PKCS #7 object. The PKCS #7
    object must always be BER encoding of the ASN.1 syntax describing the
    object. The contentInfo field of the carried PKCS #7 object always
    contains a MIME entity that is prepared as described in section 3.1.
    The contentInfo field must never be empty.
    
    Since PKCS #7 objects are binary data, in most cases base-64 transfer
    encoding is appropriate, in particular when used with SMTP transport.
    The transfer encoding used depends on the transport through which the
    object is to be sent, and is not a characteristic of the MIME type.
    
    Note that this discussion refers to the transfer encoding of the PKCS
    \#7 object or "outside" MIME entity. It is completely distinct from,
    and unrelated to, the transfer encoding of the MIME entity secured by
    the PKCS #7 object, the "inside" object, which is described in
    section 3.1.
    
    Because there are several types of application/pkcs7-mime objects, a
    sending agent SHOULD do as much as possible to help a receiving agent
    know about the contents of the object without forcing the receiving
    agent to decode the ASN.1 for the object. The MIME headers of all
    application/pkcs7-mime objects SHOULD include the optional "smime-
    type" parameter, as described in the following sections.

这基本上是以加密形式发送的安全电子邮件文件。如果一切设置正确,您应该拥有解密文件所需的公钥。如果没有,请下载它。

在您的情况下,传输编码是 Base64。首先解码附件(如果到目前为止您还没有这样做),然后处理二进制数据。

于 2012-02-23T12:30:40.333 回答