Manual Pages for UNIX Operating System command usage for man PKCS7_decrypt

OpenSSL                                   PKCS7_decrypt(3openssl)



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     PKCS7_decrypt - decrypt content from a PKCS#7 envelopedData
     structure

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      #include 

      int PKCS7_decrypt(PKCS7 *p7, EVP_PKEY *pkey, X509 *cert, BIO *data, int flags);


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     PKCS7_decrypt() extracts and decrypts the content from a
     PKCS#7 envelopedData structure. ppppkkkkeeeeyyyy is the private key of
     the recipient, cccceeeerrrrtttt is the recipients certificate, ddddaaaattttaaaa is a
     BIO to write the content to and ffffllllaaaaggggssss is an optional set of
     flags.

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     OpenSSL_add_all_algorithms() (or equivalent) should be
     called before using this function or errors about unknown
     algorithms will occur.

     Although the recipients certificate is not needed to decrypt
     the data it is needed to locate the appropriate (of possible
     several) recipients in the PKCS#7 structure.

     The following flags can be passed in the ffffllllaaaaggggssss parameter.

     If the PPPPKKKKCCCCSSSS7777_TTTTEEEEXXXXTTTT flag is set MIME headers for type
     tttteeeexxxxtttt////ppppllllaaaaiiiinnnn are deleted from the content. If the content is
     not of type tttteeeexxxxtttt////ppppllllaaaaiiiinnnn then an error is returned.

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     PKCS7_decrypt() returns either 1 for success or 0 for
     failure.  The error can be obtained from ERR_get_error(3)

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     PKCS7_decrypt() must be passed the correct recipient key and
     certificate. It would be better if it could look up the
     correct key and certificate from a database.

     The lack of single pass processing and need to hold all data
     in memory as mentioned in PKCS7_sign() also applies to
     PKCS7_verify().

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     ERR_get_error(3), PKCS7_encrypt(3)

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     PKCS7_decrypt() was added to OpenSSL 0.9.5





27/Mar/2010            Last change: 0.9.8o                      1






OpenSSL                                   PKCS7_decrypt(3openssl)























































27/Mar/2010            Last change: 0.9.8o                      2