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author | marha <marha@users.sourceforge.net> | 2009-06-28 22:07:26 +0000 |
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committer | marha <marha@users.sourceforge.net> | 2009-06-28 22:07:26 +0000 |
commit | 3562e78743202e43aec8727005182a2558117eca (patch) | |
tree | 8f9113a77d12470c5c851a2a8e4cb02e89df7d43 /openssl/doc/crypto/PKCS7_decrypt.pod | |
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Diffstat (limited to 'openssl/doc/crypto/PKCS7_decrypt.pod')
-rw-r--r-- | openssl/doc/crypto/PKCS7_decrypt.pod | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/openssl/doc/crypto/PKCS7_decrypt.pod b/openssl/doc/crypto/PKCS7_decrypt.pod new file mode 100644 index 000000000..b0ca067b8 --- /dev/null +++ b/openssl/doc/crypto/PKCS7_decrypt.pod @@ -0,0 +1,53 @@ +=pod + +=head1 NAME + +PKCS7_decrypt - decrypt content from a PKCS#7 envelopedData structure + +=head1 SYNOPSIS + +int PKCS7_decrypt(PKCS7 *p7, EVP_PKEY *pkey, X509 *cert, BIO *data, int flags); + +=head1 DESCRIPTION + +PKCS7_decrypt() extracts and decrypts the content from a PKCS#7 envelopedData +structure. B<pkey> is the private key of the recipient, B<cert> is the +recipients certificate, B<data> is a BIO to write the content to and +B<flags> is an optional set of flags. + +=head1 NOTES + +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 B<flags> parameter. + +If the B<PKCS7_TEXT> flag is set MIME headers for type B<text/plain> are deleted +from the content. If the content is not of type B<text/plain> then an error is +returned. + +=head1 RETURN VALUES + +PKCS7_decrypt() returns either 1 for success or 0 for failure. +The error can be obtained from ERR_get_error(3) + +=head1 BUGS + +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(). + +=head1 SEE ALSO + +L<ERR_get_error(3)|ERR_get_error(3)>, L<PKCS7_encrypt(3)|PKCS7_encrypt(3)> + +=head1 HISTORY + +PKCS7_decrypt() was added to OpenSSL 0.9.5 + +=cut |