D2I_CMS_CONTENTINFO(3)     Library Functions Manual     D2I_CMS_CONTENTINFO(3)

NAME
     d2i_CMS_ContentInfo, i2d_CMS_ContentInfo, d2i_CMS_bio, i2d_CMS_bio,
     d2i_CMS_ReceiptRequest, i2d_CMS_ReceiptRequest - decode and encode
     Cryptographic Message Syntax data

SYNOPSIS
     #include <openssl/cms.h>

     CMS_ContentInfo *
     d2i_CMS_ContentInfo(CMS_ContentInfo **val_out,
         const unsigned char **der_in, long length);

     int
     i2d_CMS_ContentInfo(CMS_ContentInfo *val_in, unsigned char **out);

     CMS_ContentInfo *
     d2i_CMS_bio(BIO *in_bio, CMS_ContentInfo **val_out);

     int
     i2d_CMS_bio(BIO *out_bio, CMS_ContentInfo *val_in);

     CMS_ReceiptRequest *
     d2i_CMS_ReceiptRequest(CMS_ReceiptRequest **val_out,
         const unsigned char **der_in, long length);

     int
     i2d_CMS_ReceiptRequest(CMS_ReceiptRequest *val_in, unsigned char **out);

DESCRIPTION
     These functions decode and encode Cryptographic Message Syntax data
     structures.  For details about the semantics, examples, caveats, and
     bugs, see ASN1_item_d2i(3).

     d2i_CMS_ContentInfo() and i2d_CMS_ContentInfo() decode and encode a
     CMS_ContentInfo structure defined in RFC 5652 section 3.  d2i_CMS_bio()
     and i2d_CMS_bio() are similar except that they decode or encode using a
     BIO pointer.

     d2i_CMS_ReceiptRequest() and i2d_CMS_ReceiptRequest() decode and encode a
     CMS_ReceiptRequest structure defined in RFC 2634 section 2.7.

RETURN VALUES
     d2i_CMS_ContentInfo() and d2i_CMS_bio() return a valid CMS_ContentInfo
     structure or NULL if an error occurs.

     d2i_CMS_ReceiptRequest() returns a valid CMS_ReceiptRequest structure or
     NULL if an error occurs.

     i2d_CMS_ContentInfo() and i2d_CMS_ReceiptRequest() return the number of
     bytes successfully encoded or a negative value if an error occurs.

     i2d_CMS_bio() returns 1 for success or 0 if an error occurs.

     For all functions, the error code can be obtained by ERR_get_error(3).

SEE ALSO
     ASN1_item_d2i(3), CMS_ContentInfo_new(3), CMS_get0_type(3),
     CMS_ReceiptRequest_create0(3), i2d_CMS_bio_stream(3)

STANDARDS
     RFC 5652: Cryptographic Message Syntax, section 3: General Syntax

     RFC 2634: Enhanced Security Services for S/MIME, section 2.7: Receipt
     Request Syntax

HISTORY
     These functions first appeared in OpenSSL 0.9.8h and have been available
     since OpenBSD 6.7.

Linux 6.8.7-arch1-1            November 2, 2019            Linux 6.8.7-arch1-1