Class: OpenSSL::Engine

Inherits:
Object
  • Object
show all
Defined in:
ossl_engine.c,
ossl_engine.c

Overview

This class is the access to openssl’s ENGINE cryptographic module implementation.

See also, www.openssl.org/docs/crypto/engine.html

Defined Under Namespace

Classes: EngineError

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.OpenSSL::Engine.by_id(name) ⇒ Object

Fetches the engine as specified by the id String.

OpenSSL::Engine.by_id("openssl")
 => #<OpenSSL::Engine id="openssl" name="Software engine support">

See OpenSSL::Engine.engines for the currently loaded engines.



208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
 
# File 'ossl_engine.c', line 208

static VALUE
ossl_engine_s_by_id(VALUE klass, VALUE id)
{
    ENGINE *e;
    VALUE obj;

    StringValueCStr(id);
    ossl_engine_s_load(1, &id, klass);
    obj = NewEngine(klass);
    if(!(e = ENGINE_by_id(RSTRING_PTR(id))))
	ossl_raise(eEngineError, NULL);
    SetEngine(obj, e);
    if(rb_block_given_p()) rb_yield(obj);
    if(!ENGINE_init(e))
	ossl_raise(eEngineError, NULL);
    ENGINE_ctrl(e, ENGINE_CTRL_SET_PASSWORD_CALLBACK,
		0, NULL, (void(*)(void))ossl_pem_passwd_cb);
    ossl_clear_error();

    return obj;
}

.OpenSSL::Engine.cleanup ⇒ Object

It is only necessary to run cleanup when engines are loaded via OpenSSL::Engine.load. However, running cleanup before exit is recommended.

Note that this is needed and works only in OpenSSL < 1.1.0.



162
163
164
165
166
167
168
169
 
# File 'ossl_engine.c', line 162

static VALUE
ossl_engine_s_cleanup(VALUE self)
{
#if defined(LIBRESSL_VERSION_NUMBER) || OPENSSL_VERSION_NUMBER < 0x10100000
    ENGINE_cleanup();
#endif
    return Qnil;
}

.OpenSSL::Engine.engines ⇒ Array

Returns an array of currently loaded engines.

Returns:

  • (Array) 


177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
 
# File 'ossl_engine.c', line 177

static VALUE
ossl_engine_s_engines(VALUE klass)
{
    ENGINE *e;
    VALUE ary, obj;

    ary = rb_ary_new();
    for(e = ENGINE_get_first(); e; e = ENGINE_get_next(e)){
	obj = NewEngine(klass);
	/* Need a ref count of two here because of ENGINE_free being
	 * called internally by OpenSSL when moving to the next ENGINE
	 * and by us when releasing the ENGINE reference */
	ENGINE_up_ref(e);
	SetEngine(obj, e);
        rb_ary_push(ary, obj);
    }

    return ary;
}

.OpenSSL::Engine.load(name = nil) ⇒ Object

This method loads engines. If name is nil, then all builtin engines are loaded. Otherwise, the given name, as a String, is loaded if available to your runtime, and returns true. If name is not found, then nil is returned.



93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
 
# File 'ossl_engine.c', line 93

static VALUE
ossl_engine_s_load(int argc, VALUE *argv, VALUE klass)
{
    VALUE name;

    rb_scan_args(argc, argv, "01", &name);
    if(NIL_P(name)){
        ENGINE_load_builtin_engines();
        return Qtrue;
    }
    StringValueCStr(name);
#if HAVE_ENGINE_LOAD_DYNAMIC
    OSSL_ENGINE_LOAD_IF_MATCH(dynamic, DYNAMIC);
#endif
#ifndef OPENSSL_NO_STATIC_ENGINE
#if HAVE_ENGINE_LOAD_4758CCA
    OSSL_ENGINE_LOAD_IF_MATCH(4758cca, 4758CCA);
#endif
#if HAVE_ENGINE_LOAD_AEP
    OSSL_ENGINE_LOAD_IF_MATCH(aep, AEP);
#endif
#if HAVE_ENGINE_LOAD_ATALLA
    OSSL_ENGINE_LOAD_IF_MATCH(atalla, ATALLA);
#endif
#if HAVE_ENGINE_LOAD_CHIL
    OSSL_ENGINE_LOAD_IF_MATCH(chil, CHIL);
#endif
#if HAVE_ENGINE_LOAD_CSWIFT
    OSSL_ENGINE_LOAD_IF_MATCH(cswift, CSWIFT);
#endif
#if HAVE_ENGINE_LOAD_NURON
    OSSL_ENGINE_LOAD_IF_MATCH(nuron, NURON);
#endif
#if HAVE_ENGINE_LOAD_SUREWARE
    OSSL_ENGINE_LOAD_IF_MATCH(sureware, SUREWARE);
#endif
#if HAVE_ENGINE_LOAD_UBSEC
    OSSL_ENGINE_LOAD_IF_MATCH(ubsec, UBSEC);
#endif
#if HAVE_ENGINE_LOAD_PADLOCK
    OSSL_ENGINE_LOAD_IF_MATCH(padlock, PADLOCK);
#endif
#if HAVE_ENGINE_LOAD_CAPI
    OSSL_ENGINE_LOAD_IF_MATCH(capi, CAPI);
#endif
#if HAVE_ENGINE_LOAD_GMP
    OSSL_ENGINE_LOAD_IF_MATCH(gmp, GMP);
#endif
#if HAVE_ENGINE_LOAD_GOST
    OSSL_ENGINE_LOAD_IF_MATCH(gost, GOST);
#endif
#endif
#if HAVE_ENGINE_LOAD_CRYPTODEV
    OSSL_ENGINE_LOAD_IF_MATCH(cryptodev, CRYPTODEV);
#endif
    OSSL_ENGINE_LOAD_IF_MATCH(openssl, OPENSSL);
    rb_warning("no such builtin loader for `%"PRIsVALUE"'", name);
    return Qnil;
}

Instance Method Details

#cipher(name) ⇒ OpenSSL::Cipher

Returns a new instance of OpenSSL::Cipher by name, if it is available in this engine.

An EngineError will be raised if the cipher is unavailable.

e = OpenSSL::Engine.by_id("openssl")
 => #<OpenSSL::Engine id="openssl" name="Software engine support">
e.cipher("RC4")
 => #<OpenSSL::Cipher:0x007fc5cacc3048>

Returns:



303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
 
# File 'ossl_engine.c', line 303

static VALUE
ossl_engine_get_cipher(VALUE self, VALUE name)
{
    ENGINE *e;
    const EVP_CIPHER *ciph, *tmp;
    int nid;

    tmp = EVP_get_cipherbyname(StringValueCStr(name));
    if(!tmp) ossl_raise(eEngineError, "no such cipher `%"PRIsVALUE"'", name);
    nid = EVP_CIPHER_nid(tmp);
    GetEngine(self, e);
    ciph = ENGINE_get_cipher(e, nid);
    if(!ciph) ossl_raise(eEngineError, NULL);

    return ossl_cipher_new(ciph);
}

#cmds ⇒ Array

Returns an array of command definitions for the current engine

Returns:

  • (Array) 


478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
 
# File 'ossl_engine.c', line 478

static VALUE
ossl_engine_get_cmds(VALUE self)
{
    ENGINE *e;
    const ENGINE_CMD_DEFN *defn, *p;
    VALUE ary, tmp;

    GetEngine(self, e);
    ary = rb_ary_new();
    if ((defn = ENGINE_get_cmd_defns(e)) != NULL){
	for (p = defn; p->cmd_num > 0; p++){
	    tmp = rb_ary_new();
	    rb_ary_push(tmp, rb_str_new2(p->cmd_name));
	    rb_ary_push(tmp, rb_str_new2(p->cmd_desc));
	    rb_ary_push(tmp, ossl_engine_cmd_flag_to_name(p->cmd_flags));
	    rb_ary_push(ary, tmp);
	}
    }

    return ary;
}

#ctrl_cmd(command, value = nil) ⇒ Object

Sends the given command to this engine.

Raises an EngineError if the command fails.



444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
 
# File 'ossl_engine.c', line 444

static VALUE
ossl_engine_ctrl_cmd(int argc, VALUE *argv, VALUE self)
{
    ENGINE *e;
    VALUE cmd, val;
    int ret;

    GetEngine(self, e);
    rb_scan_args(argc, argv, "11", &cmd, &val);
    ret = ENGINE_ctrl_cmd_string(e, StringValueCStr(cmd),
				 NIL_P(val) ? NULL : StringValueCStr(val), 0);
    if (!ret) ossl_raise(eEngineError, NULL);

    return self;
}

#digest(name) ⇒ OpenSSL::Digest

Returns a new instance of OpenSSL::Digest by name.

Will raise an EngineError if the digest is unavailable.

e = OpenSSL::Engine.by_id("openssl")

#=> #<OpenSSL::Engine id=“openssl” name=“Software engine support”>

e.digest("SHA1")

#=> #<OpenSSL::Digest: da39a3ee5e6b4b0d3255bfef95601890afd80709>

e.digest("zomg")

#=> OpenSSL::Engine::EngineError: no such digest ‘zomg’

Returns:



335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
 
# File 'ossl_engine.c', line 335

static VALUE
ossl_engine_get_digest(VALUE self, VALUE name)
{
    ENGINE *e;
    const EVP_MD *md, *tmp;
    int nid;

    tmp = EVP_get_digestbyname(StringValueCStr(name));
    if(!tmp) ossl_raise(eEngineError, "no such digest `%"PRIsVALUE"'", name);
    nid = EVP_MD_nid(tmp);
    GetEngine(self, e);
    md = ENGINE_get_digest(e, nid);
    if(!md) ossl_raise(eEngineError, NULL);

    return ossl_digest_new(md);
}

#finish ⇒ nil

Releases all internal structural references for this engine.

May raise an EngineError if the engine is unavailable

Returns:

  • (nil) 


277
278
279
280
281
282
283
284
285
286
 
# File 'ossl_engine.c', line 277

static VALUE
ossl_engine_finish(VALUE self)
{
    ENGINE *e;

    GetEngine(self, e);
    if(!ENGINE_finish(e)) ossl_raise(eEngineError, NULL);

    return Qnil;
}

#id ⇒ String

Gets the id for this engine.

OpenSSL::Engine.load
OpenSSL::Engine.engines #=> [#<OpenSSL::Engine#>, ...]
OpenSSL::Engine.engines.first.id

#=> “rsax”

Returns:

  • (String) 


241
242
243
244
245
246
247
 
# File 'ossl_engine.c', line 241

static VALUE
ossl_engine_get_id(VALUE self)
{
    ENGINE *e;
    GetEngine(self, e);
    return rb_str_new2(ENGINE_get_id(e));
}

#inspect ⇒ String

Pretty prints this engine.

Returns:

  • (String) 


506
507
508
509
510
511
512
513
514
 
# File 'ossl_engine.c', line 506

static VALUE
ossl_engine_inspect(VALUE self)
{
    ENGINE *e;

    GetEngine(self, e);
    return rb_sprintf("#<%"PRIsVALUE" id=\"%s\" name=\"%s\">",
		      rb_obj_class(self), ENGINE_get_id(e), ENGINE_get_name(e));
}

#load_private_key(id = nil, data = nil) ⇒ OpenSSL::PKey

Loads the given private key identified by id and data.

An EngineError is raised of the OpenSSL::PKey is unavailable.

Returns:



361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
 
# File 'ossl_engine.c', line 361

static VALUE
ossl_engine_load_privkey(int argc, VALUE *argv, VALUE self)
{
    ENGINE *e;
    EVP_PKEY *pkey;
    VALUE id, data, obj;
    char *sid, *sdata;

    rb_scan_args(argc, argv, "02", &id, &data);
    sid = NIL_P(id) ? NULL : StringValueCStr(id);
    sdata = NIL_P(data) ? NULL : StringValueCStr(data);
    GetEngine(self, e);
    pkey = ENGINE_load_private_key(e, sid, NULL, sdata);
    if (!pkey) ossl_raise(eEngineError, NULL);
    obj = ossl_pkey_new(pkey);
    OSSL_PKEY_SET_PRIVATE(obj);

    return obj;
}

#load_public_key(id = nil, data = nil) ⇒ OpenSSL::PKey

Loads the given public key identified by id and data.

An EngineError is raised of the OpenSSL::PKey is unavailable.

Returns:



390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
 
# File 'ossl_engine.c', line 390

static VALUE
ossl_engine_load_pubkey(int argc, VALUE *argv, VALUE self)
{
    ENGINE *e;
    EVP_PKEY *pkey;
    VALUE id, data;
    char *sid, *sdata;

    rb_scan_args(argc, argv, "02", &id, &data);
    sid = NIL_P(id) ? NULL : StringValueCStr(id);
    sdata = NIL_P(data) ? NULL : StringValueCStr(data);
    GetEngine(self, e);
    pkey = ENGINE_load_public_key(e, sid, NULL, sdata);
    if (!pkey) ossl_raise(eEngineError, NULL);

    return ossl_pkey_new(pkey);
}

#name ⇒ String

Get the descriptive name for this engine.

OpenSSL::Engine.load
OpenSSL::Engine.engines #=> [#<OpenSSL::Engine#>, ...]
OpenSSL::Engine.engines.first.name

#=> “RSAX engine support”

Returns:

  • (String) 


261
262
263
264
265
266
267
 
# File 'ossl_engine.c', line 261

static VALUE
ossl_engine_get_name(VALUE self)
{
    ENGINE *e;
    GetEngine(self, e);
    return rb_str_new2(ENGINE_get_name(e));
}

#set_default(flag) ⇒ Object

Set the defaults for this engine with the given flag.

These flags are used to control combinations of algorithm methods.

flag can be one of the following, other flags are available depending on your OS.

All flags

0xFFFF

[No flags] 0x0000

See also <openssl/engine.h>



424
425
426
427
428
429
430
431
432
433
434
 
# File 'ossl_engine.c', line 424

static VALUE
ossl_engine_set_default(VALUE self, VALUE flag)
{
    ENGINE *e;
    int f = NUM2INT(flag);

    GetEngine(self, e);
    ENGINE_set_default(e, f);

    return Qtrue;
}