D2I_X509_REQ(3)            Library Functions Manual            D2I_X509_REQ(3)

NAME
     d2i_X509_REQ, i2d_X509_REQ, d2i_X509_REQ_bio, d2i_X509_REQ_fp,
     i2d_X509_REQ_bio, i2d_X509_REQ_fp, d2i_X509_REQ_INFO, i2d_X509_REQ_INFO -
     decode and encode PKCS#10 certification requests

SYNOPSIS
     #include <openssl/x509.h>

     X509_REQ *
     d2i_X509_REQ(X509_REQ **val_out, const unsigned char **der_in,
         long length);

     int
     i2d_X509_REQ(X509_REQ *val_in, unsigned char **der_out);

     X509_REQ *
     d2i_X509_REQ_bio(BIO *in_bio, X509_REQ **val_out);

     X509_REQ *
     d2i_X509_REQ_fp(FILE *in_fp, X509_REQ **val_out);

     int
     i2d_X509_REQ_bio(BIO *out_bio, X509_REQ *val_in);

     int
     i2d_X509_REQ_fp(FILE *out_fp, X509_REQ *val_in);

     X509_REQ_INFO *
     d2i_X509_REQ_INFO(X509_REQ_INFO **val_out, const unsigned char **der_in,
         long length);

     int
     i2d_X509_REQ_INFO(X509_REQ_INFO *val_in, unsigned char **der_out);

DESCRIPTION
     These functions decode and encode PKCS#10 certification requests.  For
     details about the semantics, examples, caveats, and bugs, see
     ASN1_item_d2i(3).

     d2i_X509_REQ() and i2d_X509_REQ() decode and encode an ASN.1
     CertificationRequest structure defined in RFC 2986 section 4.2.
     d2i_X509_REQ_bio(), d2i_X509_REQ_fp(), i2d_X509_REQ_bio(), and
     i2d_X509_REQ_fp() are similar except that they decode or encode using a
     BIO or FILE pointer.

     d2i_X509_REQ_INFO() and i2d_X509_REQ_INFO() decode and encode an ASN.1
     CertificationRequestInfo structure defined in RFC 2986 section 4.1.

RETURN VALUES
     d2i_X509_REQ(), d2i_X509_REQ_bio(), and d2i_X509_REQ_fp() return an
     X509_REQ object or NULL if an error occurs.

     d2i_X509_REQ_INFO() returns an X509_REQ_INFO object or NULL if an error
     occurs.

     i2d_X509_REQ() and i2d_X509_REQ_INFO() return the number of bytes
     successfully encoded or a negative value if an error occurs.

     i2d_X509_REQ_bio() and i2d_X509_REQ_fp() return 1 for success or 0 if an
     error occurs.

SEE ALSO
     ASN1_item_d2i(3), PEM_read_X509_REQ(3), X509_REQ_new(3)

STANDARDS
     RFC 2986: PKCS #10: Certification Request Syntax Specification

HISTORY
     d2i_X509_REQ(), i2d_X509_REQ(), d2i_X509_REQ_fp(), i2d_X509_REQ_fp(),
     d2i_X509_REQ_INFO(), and i2d_X509_REQ_INFO() first appeared in SSLeay
     0.5.1.  d2i_X509_REQ_bio() and i2d_X509_REQ_bio() first appeared in
     SSLeay 0.6.0.  These functions have been available since OpenBSD 2.4.

Linux 6.8.7-arch1-1             March 27, 2018             Linux 6.8.7-arch1-1