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D2I_X509_NAME(3)      DragonFly Library Functions Manual      D2I_X509_NAME(3)

NAME
     d2i_X509_NAME, i2d_X509_NAME, X509_NAME_get0_der, X509_NAME_dup,
     X509_NAME_hash, d2i_X509_NAME_ENTRY, i2d_X509_NAME_ENTRY,
     X509_NAME_ENTRY_dup -- decode and encode X.501 Name objects

SYNOPSIS
     #include <openssl/x509.h>

     X509_NAME *
     d2i_X509_NAME(X509_NAME **val_out, unsigned char **der_in, long length);

     int
     i2d_X509_NAME(X509_NAME *val_in, unsigned char **der_out);

     int
     X509_NAME_get0_der(X509_NAME *val_in, const unsigned char **der_out,
	 size_t *out_len);

     X509_NAME *
     X509_NAME_dup(X509_NAME *val_in);

     unsigned long
     X509_NAME_hash(X509_NAME *val_in);

     X509_NAME_ENTRY *
     d2i_X509_NAME_ENTRY(X509_NAME_ENTRY **val_out, unsigned char **der_in,
	 long length);

     int
     i2d_X509_NAME_ENTRY(X509_NAME_ENTRY *val_in, unsigned char **der_out);

     X509_NAME_ENTRY *
     X509_NAME_ENTRY_dup(X509_NAME_ENTRY *val_in);

DESCRIPTION
     These functions decode and encode X.501 Name objects using DER format.
     For details about the semantics, examples, caveats, and bugs, see
     ASN1_item_d2i(3).

     d2i_X509_NAME() and i2d_X509_NAME() decode and encode an ASN.1 Name
     structure defined in RFC 5280 section 4.1.2.4.

     X509_NAME_get0_der() is a variant of i2d_X509_NAME() that does not copy
     the encoded output but instead returns a pointer to the internally cached
     DER-encoded version of the name.  Also, it does not return the length of
     the output in bytes, but instead stores it in out_len.  If the cached
     encoded form happens to be out of date, both functions update it before
     copying it or returning a pointer to it.

     X509_NAME_dup() copies val_in by calling i2d_X509_NAME() and
     d2i_X509_NAME().

     X509_NAME_hash() calculates a SHA1(3) hash of the DER-encoded form of the
     name *val_in.  It is for example used by X509_LOOKUP_hash_dir(3) to
     locate certificate files in the file system.

     d2i_X509_NAME_ENTRY() and i2d_X509_NAME_ENTRY() decode and encode an
     ASN.1 RelativeDistinguishedName structure defined in RFC 5280 section
     4.1.2.4.

     X509_NAME_ENTRY_dup() copies val_in by calling i2d_X509_NAME_ENTRY() and
     d2i_X509_NAME_ENTRY().

RETURN VALUES
     d2i_X509_NAME() and X509_NAME_dup() return the new X509_NAME object or
     NULL if an error occurs.

     X509_NAME_get0_der() returns 1 on success or 0 if an error occurs.

     X509_NAME_hash() returns the hash value or 0 if an error occurs.

     d2i_X509_NAME_ENTRY() and X509_NAME_ENTRY_dup() return the new
     X509_NAME_ENTRY object or NULL if an error occurs.

     i2d_X509_NAME() and i2d_X509_NAME_ENTRY() return the number of bytes suc-
     cessfully encoded or a negative value if an error occurs.

SEE ALSO
     ASN1_item_d2i(3), X509_NAME_ENTRY_new(3), X509_NAME_new(3),
     X509_NAME_print_ex(3)

STANDARDS
     RFC 5280: Internet X.509 Public Key Infrastructure Certificate and Cer-
     tificate Revocation List (CRL) Profile

     ITU-T Recommendation X.690, also known as ISO/IEC 8825-1: Information
     technology - ASN.1 encoding rules: Specification of Basic Encoding Rules
     (BER), Canonical Encoding Rules (CER) and Distinguished Encoding Rules
     (DER).

HISTORY
     X509_NAME_dup() first appeared in SSLeay 0.4.4.  d2i_X509_NAME(),
     i2d_X509_NAME(), d2i_X509_NAME_ENTRY(), i2d_X509_NAME_ENTRY(), and
     X509_NAME_ENTRY_dup() first appeared in SSLeay 0.5.1.  X509_NAME_hash()
     first appeared in SSLeay 0.8.0.  These functions have been available
     since OpenBSD 2.4.

     X509_NAME_get0_der() first appeared in OpenSSL 1.1.0 and has been avail-
     able since OpenBSD 6.3.

DragonFly 5.5			March 27, 2018			 DragonFly 5.5