In Files

  • ruby-3.1.2/ext/openssl/lib/openssl/x509.rb
  • ruby-3.1.2/ext/openssl/ossl_x509attr.c


Class/Module Index [+]



An X.509 name represents a hostname, email address or other entity associated with a public key.

You can create a Name by parsing a distinguished name String or by supplying the distinguished name as an Array.

name = OpenSSL::X509::Name.parse_rfc2253 'DC=example,CN=nobody'

name = [['CN', 'nobody'], ['DC', 'example']]



A flag for to_s.

Breaks the name returned into multiple lines if longer than 80 characters.


The default object type for name entries.


A flag for to_s.

Returns a multiline format.


The default object type template for name entries.


A flag for to_s.

Returns a more readable format than RFC2253.


A flag for to_s.

Returns an RFC2253 format name.

Public Class Methods => name click to toggle source => name => name, template) => name

Creates a new Name.

A name may be created from a DER encoded string der, an Array representing a distinguished_name or a distinguished_name along with a template.

name = [['CN', 'nobody'], ['DC', 'example']]

name = name.to_der

See add_entry for a description of the distinguished_name Array's contents

               static VALUE
ossl_x509name_initialize(int argc, VALUE *argv, VALUE self)
    X509_NAME *name;
    VALUE arg, template;

    GetX509Name(self, name);
    if (rb_scan_args(argc, argv, "02", &arg, &template) == 0) {
        return self;
    else {
        VALUE tmp = rb_check_array_type(arg);
        if (!NIL_P(tmp)) {
            VALUE args;
            if(NIL_P(template)) template = OBJECT_TYPE_TEMPLATE;
            args = rb_ary_new3(2, self, template);
            rb_block_call(tmp, rb_intern("each"), 0, 0, ossl_x509name_init_i, args);
            const unsigned char *p;
            VALUE str = ossl_to_der_if_possible(arg);
            X509_NAME *x;
            p = (unsigned char *)RSTRING_PTR(str);
            x = d2i_X509_NAME(&name, &p, RSTRING_LEN(str));
            DATA_PTR(self) = name;
                ossl_raise(eX509NameError, NULL);

    return self;
parse(str, template=OBJECT_TYPE_TEMPLATE) click to toggle source
Alias for: parse_openssl
parse_openssl(str, template=OBJECT_TYPE_TEMPLATE) click to toggle source

Parses the string representation of a distinguished name. Two different forms are supported:

  • OpenSSL format (X509_NAME_oneline()) used by #to_s. For example: /DC=com/DC=example/CN=nobody

  • OpenSSL format (X509_NAME_print()) used by #to_s(OpenSSL::X509::Name::COMPAT). For example: DC=com, DC=example, CN=nobody

Neither of them is standardized and has quirks and inconsistencies in handling of escaped characters or multi-valued RDNs.

Use of this method is discouraged in new applications. See Name.parse_rfc2253 and to_utf8 for the alternative.

               # File ruby-3.1.2/ext/openssl/lib/openssl/x509.rb, line 305
def parse_openssl(str, template=OBJECT_TYPE_TEMPLATE)
  if str.start_with?("/")
    # /A=B/C=D format
    ary = str[1..-1].split("/").map { |i| i.split("=", 2) }
    # Comma-separated
    ary = str.split(",").map { |i| i.strip.split("=", 2) }
  end, template)
Also aliased as: parse
parse_rfc2253(str, template=OBJECT_TYPE_TEMPLATE) click to toggle source

Parses the UTF-8 string representation of a distinguished name, according to RFC 2253.

See also to_utf8 for the opposite operation.

               # File ruby-3.1.2/ext/openssl/lib/openssl/x509.rb, line 286
def parse_rfc2253(str, template=OBJECT_TYPE_TEMPLATE)
  ary = OpenSSL::X509::Name::RFC2253DN.scan(str), template)

Public Instance Methods

<=>(p1) click to toggle source
Alias for: cmp
add_entry(oid, value [, type], loc: -1, set: 0) => self click to toggle source

Adds a new entry with the given oid and value to this name. The oid is an object identifier defined in ASN.1. Some common OIDs are:


Country Name


Common Name


Domain Component


Organization Name


Organizational Unit Name


State or Province Name

The optional keyword parameters loc and set specify where to insert the new attribute. Refer to the manpage of X509_NAME_add_entry(3) for details. loc defaults to -1 and set defaults to 0. This appends a single-valued RDN to the end.

VALUE ossl_x509name_add_entry(int argc, VALUE *argv, VALUE self)
    X509_NAME *name;
    VALUE oid, value, type, opts, kwargs[2];
    static ID kwargs_ids[2];
    const char *oid_name;
    int loc = -1, set = 0;

    if (!kwargs_ids[0]) {
        kwargs_ids[0] = rb_intern_const("loc");
        kwargs_ids[1] = rb_intern_const("set");
    rb_scan_args(argc, argv, "21:", &oid, &value, &type, &opts);
    rb_get_kwargs(opts, kwargs_ids, 0, 2, kwargs);
    oid_name = StringValueCStr(oid);
    if(NIL_P(type)) type = rb_aref(OBJECT_TYPE_TEMPLATE, oid);
    if (kwargs[0] != Qundef)
        loc = NUM2INT(kwargs[0]);
    if (kwargs[1] != Qundef)
        set = NUM2INT(kwargs[1]);
    GetX509Name(self, name);
    if (!X509_NAME_add_entry_by_txt(name, oid_name, NUM2INT(type),
                                    (unsigned char *)RSTRING_PTR(value),
                                    RSTRING_LENINT(value), loc, set))
        ossl_raise(eX509NameError, "X509_NAME_add_entry_by_txt");
    return self;
cmp(other) → -1 | 0 | 1 | nil click to toggle source
name <=> other → -1 | 0 | 1 | nil

Compares this Name with other and returns 0 if they are the same and -1 or +1 if they are greater or less than each other respectively. Returns nil if they are not comparable (i.e. different types).

               static VALUE
ossl_x509name_cmp(VALUE self, VALUE other)
    int result;

    if (!rb_obj_is_kind_of(other, cX509Name))
        return Qnil;

    result = ossl_x509name_cmp0(self, other);
    if (result < 0) return INT2FIX(-1);
    if (result > 0) return INT2FIX(1);

    return INT2FIX(0);
Also aliased as: <=>
eql?(other) → true | false click to toggle source

Returns true if name and other refer to the same hash key.

               static VALUE
ossl_x509name_eql(VALUE self, VALUE other)
    if (!rb_obj_is_kind_of(other, cX509Name))
        return Qfalse;

    return ossl_x509name_cmp0(self, other) == 0 ? Qtrue : Qfalse;
hash => integer click to toggle source

The hash value returned is suitable for use as a certificate's filename in a CA path.

               static VALUE
ossl_x509name_hash(VALUE self)
    X509_NAME *name;
    unsigned long hash;

    GetX509Name(self, name);

    hash = X509_NAME_hash(name);

    return ULONG2NUM(hash);
hash_old => integer click to toggle source

Returns an MD5 based hash used in OpenSSL 0.9.X.

               static VALUE
ossl_x509name_hash_old(VALUE self)
    X509_NAME *name;
    unsigned long hash;

    GetX509Name(self, name);

    hash = X509_NAME_hash_old(name);

    return ULONG2NUM(hash);
initialize_copy(p1) click to toggle source
               static VALUE
ossl_x509name_initialize_copy(VALUE self, VALUE other)
    X509_NAME *name, *name_other, *name_new;

    GetX509Name(self, name);
    GetX509Name(other, name_other);

    name_new = X509_NAME_dup(name_other);
    if (!name_new)
        ossl_raise(eX509NameError, "X509_NAME_dup");

    SetX509Name(self, name_new);

    return self;
pretty_print(q) click to toggle source
               # File ruby-3.1.2/ext/openssl/lib/openssl/x509.rb, line 319
def pretty_print(q)
  q.object_group(self) {
    q.text ' '
    q.text to_s(OpenSSL::X509::Name::RFC2253)
to_a => [[name, data, type], ...] click to toggle source

Returns an Array representation of the distinguished name suitable for passing to ::new

               static VALUE
ossl_x509name_to_a(VALUE self)
    X509_NAME *name;
    X509_NAME_ENTRY *entry;
    int i,entries,nid;
    char long_name[512];
    const char *short_name;
    VALUE ary, vname, ret;
    ASN1_STRING *value;

    GetX509Name(self, name);
    entries = X509_NAME_entry_count(name);
    if (entries < 0) {
        OSSL_Debug("name entries < 0!");
        return rb_ary_new();
    ret = rb_ary_new2(entries);
    for (i=0; i<entries; i++) {
        if (!(entry = X509_NAME_get_entry(name, i))) {
            ossl_raise(eX509NameError, NULL);
        if (!i2t_ASN1_OBJECT(long_name, sizeof(long_name),
                             X509_NAME_ENTRY_get_object(entry))) {
            ossl_raise(eX509NameError, NULL);
        nid = OBJ_ln2nid(long_name);
        if (nid == NID_undef) {
            vname = rb_str_new2((const char *) &long_name);
        } else {
            short_name = OBJ_nid2sn(nid);
            vname = rb_str_new2(short_name); /*do not free*/
        value = X509_NAME_ENTRY_get_data(entry);
        ary = rb_ary_new3(3, vname, asn1str_to_str(value), INT2NUM(value->type));
        rb_ary_push(ret, ary);
    return ret;
to_der => string click to toggle source

Converts the name to DER encoding

               static VALUE
ossl_x509name_to_der(VALUE self)
    X509_NAME *name;
    VALUE str;
    long len;
    unsigned char *p;

    GetX509Name(self, name);
    if((len = i2d_X509_NAME(name, NULL)) <= 0)
        ossl_raise(eX509NameError, NULL);
    str = rb_str_new(0, len);
    p = (unsigned char *)RSTRING_PTR(str);
    if(i2d_X509_NAME(name, &p) <= 0)
        ossl_raise(eX509NameError, NULL);
    ossl_str_adjust(str, p);

    return str;
to_s → string click to toggle source
to_s(format) → string

Returns a String representation of the Distinguished Name. format is one of:

If format is omitted, the largely broken and traditional OpenSSL format (X509_NAME_oneline() format) is chosen.

Use of this method is discouraged. None of the formats other than OpenSSL::X509::Name::RFC2253 is standardized and may show an inconsistent behavior through OpenSSL versions.

It is recommended to use to_utf8 instead, which is equivalent to calling name.to_s(OpenSSL::X509::Name::RFC2253).force_encoding("UTF-8").

               static VALUE
ossl_x509name_to_s(int argc, VALUE *argv, VALUE self)
    rb_check_arity(argc, 0, 1);
    /* name.to_s(nil) was allowed */
    if (!argc || NIL_P(argv[0]))
        return ossl_x509name_to_s_old(self);
        return x509name_print(self, NUM2ULONG(argv[0]));
to_utf8 → string click to toggle source

Returns an UTF-8 representation of the distinguished name, as specified in RFC 2253.

               static VALUE
ossl_x509name_to_utf8(VALUE self)
    VALUE str = x509name_print(self, XN_FLAG_RFC2253 & ~ASN1_STRFLGS_ESC_MSB);
    rb_enc_associate_index(str, rb_utf8_encindex());
    return str;