class OpenSSL::Engine

Parent:: Object

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

Public Class Methods

by_id(name) → engine Show source

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;
}

Fetch the engine as specified by the id String

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

See ::engines for the currently loaded engines

OpenSSL::Engine.cleanup Show source

static VALUE
ossl_engine_s_cleanup(VALUE self)
{
    ENGINE_cleanup();
    return Qnil;
}

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

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

engines() Show source

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;
}

Returns an array of currently loaded engines.

load(enginename = nil) Show source

static VALUE
ossl_engine_s_load(int argc, VALUE *argv, VALUE klass)
{
#if !defined(HAVE_ENGINE_LOAD_BUILTIN_ENGINES)
    return Qnil;
#else
    VALUE name;

    rb_scan_args(argc, argv, "01", &name);
    if(NIL_P(name)){
        ENGINE_load_builtin_engines();
        return Qtrue;
    }
    StringValueCStr(name);
#ifndef OPENSSL_NO_STATIC_ENGINE
#if HAVE_ENGINE_LOAD_DYNAMIC
    OSSL_ENGINE_LOAD_IF_MATCH(dynamic);
#endif
#if HAVE_ENGINE_LOAD_4758CCA
    OSSL_ENGINE_LOAD_IF_MATCH(4758cca);
#endif
#if HAVE_ENGINE_LOAD_AEP
    OSSL_ENGINE_LOAD_IF_MATCH(aep);
#endif
#if HAVE_ENGINE_LOAD_ATALLA
    OSSL_ENGINE_LOAD_IF_MATCH(atalla);
#endif
#if HAVE_ENGINE_LOAD_CHIL
    OSSL_ENGINE_LOAD_IF_MATCH(chil);
#endif
#if HAVE_ENGINE_LOAD_CSWIFT
    OSSL_ENGINE_LOAD_IF_MATCH(cswift);
#endif
#if HAVE_ENGINE_LOAD_NURON
    OSSL_ENGINE_LOAD_IF_MATCH(nuron);
#endif
#if HAVE_ENGINE_LOAD_SUREWARE
    OSSL_ENGINE_LOAD_IF_MATCH(sureware);
#endif
#if HAVE_ENGINE_LOAD_UBSEC
    OSSL_ENGINE_LOAD_IF_MATCH(ubsec);
#endif
#if HAVE_ENGINE_LOAD_PADLOCK
    OSSL_ENGINE_LOAD_IF_MATCH(padlock);
#endif
#if HAVE_ENGINE_LOAD_CAPI
    OSSL_ENGINE_LOAD_IF_MATCH(capi);
#endif
#if HAVE_ENGINE_LOAD_GMP
    OSSL_ENGINE_LOAD_IF_MATCH(gmp);
#endif
#if HAVE_ENGINE_LOAD_GOST
    OSSL_ENGINE_LOAD_IF_MATCH(gost);
#endif
#if HAVE_ENGINE_LOAD_CRYPTODEV
    OSSL_ENGINE_LOAD_IF_MATCH(cryptodev);
#endif
#if HAVE_ENGINE_LOAD_AESNI
    OSSL_ENGINE_LOAD_IF_MATCH(aesni);
#endif
#endif
#ifdef HAVE_ENGINE_LOAD_OPENBSD_DEV_CRYPTO
    OSSL_ENGINE_LOAD_IF_MATCH(openbsd_dev_crypto);
#endif
    OSSL_ENGINE_LOAD_IF_MATCH(openssl);
    rb_warning("no such builtin loader for `%"PRIsVALUE"'", name);
    return Qnil;
#endif /* HAVE_ENGINE_LOAD_BUILTIN_ENGINES */
}

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.

Public Instance Methods

cipher(name) → OpenSSL::Cipher Show source

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);
}

This returns an 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>

cmds() Show source

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;
}

Returns an array of command definitions for the current engine

ctrl_cmd(command, value = nil) → engine Show source

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;
}

Send the given command to this engine.

Raises an EngineError if the command fails.

digest(name) → OpenSSL::Digest Show source

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);
}

This returns an 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'

finish() Show source

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

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

    return Qnil;
}

Releases all internal structural references for this engine.

May raise an EngineError if the engine is unavailable

id() Show source

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

Get the id for this engine

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

inspect() Show source

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));
}

Pretty print this engine

load_private_key(id = nil, data = nil) → OpenSSL::PKey Show source

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;
}

Loads the given private key by id and data.

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

load_public_key(id = nil, data = nil) → OpenSSL::PKey Show source

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);
}

Loads the given private key by id and data.

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

name() Show source

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

Get the descriptive name for this engine

OpenSSL::Engine.load
OpenSSL::Engine.engines #=> [#<OpenSSL::Engine#>, ...]
OpenSSL::Engine.engines.first.name
  #=> "RSAX engine support"

set_default(flag) Show source

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;
}

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