SMIME_write_PKCS7(3)

SMIME_write_PKCS7(3)         OpenSSL         SMIME_write_PKCS7(3)

NAME

     SMIME_write_PKCS7 - convert PKCS#7 structure to S/MIME
     format.

SYNOPSIS

      #include <openssl/pkcs7.h>

      int SMIME_write_PKCS7(BIO *out, PKCS7 *p7, BIO *data, int flags);

DESCRIPTION

     SMIME_write_PKCS7() adds the appropriate MIME headers to a
     PKCS#7 structure to produce an S/MIME message.

     out is the BIO to write the data to. p7 is the appropriate
     PKCS7 structure. If streaming is enabled then the content
     must be supplied in the data argument. flags is an optional
     set of flags.

NOTES

     The following flags can be passed in the flags parameter.

     If PKCS7_DETACHED is set then cleartext signing will be
     used, this option only makes sense for signedData where
     PKCS7_DETACHED is also set when PKCS7_sign() is also called.

     If the PKCS7_TEXT flag is set MIME headers for type
     text/plain are added to the content, this only makes sense
     if PKCS7_DETACHED is also set.

     If the PKCS7_STREAM flag is set streaming is performed. This
     flag should only be set if PKCS7_STREAM was also set in the
     previous call to PKCS7_sign() or PPKKCCSS77_eennccrryypptt(()).

     If cleartext signing is being used and PKCS7_STREAM not set
     then the data must be read twice: once to compute the
     signature in PKCS7_sign() and once to output the S/MIME
     message.

     If streaming is performed the content is output in BER
     format using indefinite length constructuted encoding except
     in the case of signed data with detached content where the
     content is absent and DER format is used.

     SMIME_write_PKCS7() always base64 encodes PKCS#7 structures,
     there should be an option to disable this.

     SMIME_write_PKCS7() returns 1 for success or 0 for failure.

     ERR_get_error(3), PKCS7_sign(3), PKCS7_verify(3),

1.0.2t               Last change: 2019-09-10                    1

SMIME_write_PKCS7(3)         OpenSSL         SMIME_write_PKCS7(3)

     PKCS7_encrypt(3) PKCS7_decrypt(3)

     SMIME_write_PKCS7() was added to OpenSSL 0.9.5

1.0.2t               Last change: 2019-09-10                    2