=pod
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=head1 NAME
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CMS_sign_receipt - create a CMS signed receipt
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=head1 SYNOPSIS
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#include <openssl/cms.h>
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CMS_ContentInfo *CMS_sign_receipt(CMS_SignerInfo *si, X509 *signcert, EVP_PKEY *pkey, STACK_OF(X509) *certs, unsigned int flags);
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=head1 DESCRIPTION
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CMS_sign_receipt() creates and returns a CMS signed receipt structure. B<si> is
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the B<CMS_SignerInfo> structure containing the signed receipt request.
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B<signcert> is the certificate to sign with, B<pkey> is the corresponding
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private key. B<certs> is an optional additional set of certificates to include
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in the CMS structure (for example any intermediate CAs in the chain).
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B<flags> is an optional set of flags.
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=head1 NOTES
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This functions behaves in a similar way to CMS_sign() except the flag values
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B<CMS_DETACHED>, B<CMS_BINARY>, B<CMS_NOATTR>, B<CMS_TEXT> and B<CMS_STREAM>
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are not supported since they do not make sense in the context of signed
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receipts.
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=head1 RETURN VALUES
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CMS_sign_receipt() returns either a valid CMS_ContentInfo structure or NULL if
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an error occurred. The error can be obtained from ERR_get_error(3).
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=head1 SEE ALSO
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L<ERR_get_error(3)|ERR_get_error(3)>,
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L<CMS_verify_receipt(3)|CMS_verify_receipt(3)>,
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L<CMS_sign(3)|CMS_sign(3)>
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=head1 HISTORY
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CMS_sign_receipt() was added to OpenSSL 0.9.8
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=cut
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