linux man page for smime_read_cms

Query: smime_read_cms

OS: linux

Section: 3ssl

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

SMIME_read_CMS(3SSL)						      OpenSSL						      SMIME_read_CMS(3SSL)

NAME
SMIME_read_CMS - parse S/MIME message.
SYNOPSIS
#include <openssl/cms.h> CMS_ContentInfo *SMIME_read_CMS(BIO *in, BIO **bcont);
DESCRIPTION
SMIME_read_CMS() parses a message in S/MIME format. in is a BIO to read the message from. If cleartext signing is used then the content is saved in a memory bio which is written to *bcont, otherwise *bcont is set to NULL. The parsed CMS_ContentInfo structure is returned or NULL if an error occurred.
NOTES
If *bcont is not NULL then the message is clear text signed. *bcont can then be passed to CMS_verify() with the CMS_DETACHED flag set. Otherwise the type of the returned structure can be determined using CMS_get0_type(). To support future functionality if bcont is not NULL *bcont should be initialized to NULL. For example: BIO *cont = NULL; CMS_ContentInfo *cms; cms = SMIME_read_CMS(in, &cont);
BUGS
The MIME parser used by SMIME_read_CMS() is somewhat primitive. While it will handle most S/MIME messages more complex compound formats may not work. The parser assumes that the CMS_ContentInfo structure is always base64 encoded and will not handle the case where it is in binary format or uses quoted printable format. The use of a memory BIO to hold the signed content limits the size of message which can be processed due to memory restraints: a streaming single pass option should be available.
RETURN VALUES
SMIME_read_CMS() returns a valid CMS_ContentInfo structure or NULL if an error occurred. The error can be obtained from ERR_get_error(3).
SEE ALSO
ERR_get_error(3), CMS_type(3) SMIME_read_CMS(3), CMS_sign(3), CMS_verify(3), CMS_encrypt(3) CMS_decrypt(3)
HISTORY
SMIME_read_CMS() was added to OpenSSL 0.9.8 1.0.0e 2008-04-10 SMIME_read_CMS(3SSL)
Related Man Pages
cms_compress(3ssl) - debian
smime_write_cms(3ssl) - debian
cms_decrypt(3ssl) - minix
cms_encrypt(3ssl) - minix
cms_encrypt(3ssl) - plan9
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