Class: OpenSSL::PKey::RSA

Inherits:
PKey
  • Object
show all
Defined in:
ossl_pkey_rsa.c

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from PKey

#sign, #verify

Constructor Details

#initialize(*args) ⇒ Object 



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# File 'ossl_pkey_rsa.c', line 107

static VALUE
ossl_rsa_initialize(int argc, VALUE *argv, VALUE self)
{
    EVP_PKEY *pkey;
    RSA *rsa;
    BIO *in;
    char *passwd = NULL;
    VALUE arg, pass;
  
    GetPKey(self, pkey);
    if(rb_scan_args(argc, argv, "02", &arg, &pass) == 0) {
  rsa = RSA_new();
    }
    else if (FIXNUM_P(arg)) {
  rsa = rsa_generate(FIX2INT(arg), NIL_P(pass) ? RSA_F4 : NUM2INT(pass));
  if (!rsa) ossl_raise(eRSAError, NULL);
    }
    else {
  if (!NIL_P(pass)) passwd = StringValuePtr(pass);
  arg = ossl_to_der_if_possible(arg);
  in = ossl_obj2bio(arg);
  rsa = PEM_read_bio_RSAPrivateKey(in, NULL, ossl_pem_passwd_cb, passwd);
  if (!rsa) {
      BIO_reset(in);
      rsa = PEM_read_bio_RSAPublicKey(in, NULL, NULL, NULL);
  }
  if (!rsa) {
      BIO_reset(in);
      rsa = PEM_read_bio_RSA_PUBKEY(in, NULL, NULL, NULL);
  }
  if (!rsa) {
      BIO_reset(in);
      rsa = d2i_RSAPrivateKey_bio(in, NULL);
  }
  if (!rsa) {
      BIO_reset(in);
      rsa = d2i_RSAPublicKey_bio(in, NULL);
  }
  if (!rsa) {
      BIO_reset(in);
      rsa = d2i_RSA_PUBKEY_bio(in, NULL);
  }
  BIO_free(in);
  if (!rsa) ossl_raise(eRSAError, "Neither PUB key nor PRIV key:");
    }
    if (!EVP_PKEY_assign_RSA(pkey, rsa)) {
  RSA_free(rsa);
  ossl_raise(eRSAError, NULL);
    }

    return self;
}

Class Method Details

.generate(*args) ⇒ Object 



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# File 'ossl_pkey_rsa.c', line 87

static VALUE
ossl_rsa_s_generate(int argc, VALUE *argv, VALUE klass)
{
    RSA *rsa;
    VALUE size, exp;
    VALUE obj;

    rb_scan_args(argc, argv, "11", &size, &exp);

    rsa = rsa_generate(NUM2INT(size), NIL_P(exp) ? RSA_F4 : NUM2INT(exp)); /* err handled by rsa_instance */
    obj = rsa_instance(klass, rsa);

    if (obj == Qfalse) {
  RSA_free(rsa);
  ossl_raise(eRSAError, NULL);
    }

    return obj;
}

Instance Method Details

#export(*args) ⇒ Object Also known as: to_pem, to_s 



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# File 'ossl_pkey_rsa.c', line 183

static VALUE
ossl_rsa_export(int argc, VALUE *argv, VALUE self)
{
    EVP_PKEY *pkey;
    BIO *out;
    const EVP_CIPHER *ciph = NULL;
    char *passwd = NULL;
    VALUE cipher, pass, str;

    GetPKeyRSA(self, pkey);

    rb_scan_args(argc, argv, "02", &cipher, &pass);

    if (!NIL_P(cipher)) {
  ciph = GetCipherPtr(cipher);
  if (!NIL_P(pass)) {
      passwd = StringValuePtr(pass);
  }
    }
    if (!(out = BIO_new(BIO_s_mem()))) {
  ossl_raise(eRSAError, NULL);
    }
    if (RSA_HAS_PRIVATE(pkey->pkey.rsa)) {
  if (!PEM_write_bio_RSAPrivateKey(out, pkey->pkey.rsa, ciph,
           NULL, 0, ossl_pem_passwd_cb, passwd)) {
      BIO_free(out);
      ossl_raise(eRSAError, NULL);
  }
    } else {
  if (!PEM_write_bio_RSAPublicKey(out, pkey->pkey.rsa)) {
      BIO_free(out);
      ossl_raise(eRSAError, NULL);
  }
    }
    str = ossl_membio2str(out);
    
    return str;
}

#params ⇒ Object

Stores all parameters of key to the hash INSECURE: PRIVATE INFORMATIONS CAN LEAK OUT!!! Don’t use :-)) (I’s up to you)



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# File 'ossl_pkey_rsa.c', line 348

static VALUE
ossl_rsa_get_params(VALUE self)
{
    EVP_PKEY *pkey;
    VALUE hash;

    GetPKeyRSA(self, pkey);

    hash = rb_hash_new();

    rb_hash_aset(hash, rb_str_new2("n"), ossl_bn_new(pkey->pkey.rsa->n));
    rb_hash_aset(hash, rb_str_new2("e"), ossl_bn_new(pkey->pkey.rsa->e));
    rb_hash_aset(hash, rb_str_new2("d"), ossl_bn_new(pkey->pkey.rsa->d));
    rb_hash_aset(hash, rb_str_new2("p"), ossl_bn_new(pkey->pkey.rsa->p));
    rb_hash_aset(hash, rb_str_new2("q"), ossl_bn_new(pkey->pkey.rsa->q));
    rb_hash_aset(hash, rb_str_new2("dmp1"), ossl_bn_new(pkey->pkey.rsa->dmp1));
    rb_hash_aset(hash, rb_str_new2("dmq1"), ossl_bn_new(pkey->pkey.rsa->dmq1));
    rb_hash_aset(hash, rb_str_new2("iqmp"), ossl_bn_new(pkey->pkey.rsa->iqmp));
    
    return hash;
}

#private? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'ossl_pkey_rsa.c', line 173

static VALUE
ossl_rsa_is_private(VALUE self)
{
    EVP_PKEY *pkey;
  
    GetPKeyRSA(self, pkey);
    
    return (RSA_PRIVATE(self, pkey->pkey.rsa)) ? Qtrue : Qfalse;
}

#private_decrypt(*args) ⇒ Object 



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# File 'ossl_pkey_rsa.c', line 318

static VALUE
ossl_rsa_private_decrypt(int argc, VALUE *argv, VALUE self)
{
    EVP_PKEY *pkey;
    int buf_len, pad;
    VALUE str, buffer, padding;

    GetPKeyRSA(self, pkey);
    if (!RSA_PRIVATE(self, pkey->pkey.rsa)) {
  ossl_raise(eRSAError, "private key needed.");
    }
    rb_scan_args(argc, argv, "11", &buffer, &padding);
    pad = (argc == 1) ? RSA_PKCS1_PADDING : NUM2INT(padding);
    StringValue(buffer);
    str = rb_str_new(0, ossl_rsa_buf_size(pkey));
    buf_len = RSA_private_decrypt(RSTRING(buffer)->len, RSTRING(buffer)->ptr,
          RSTRING(str)->ptr, pkey->pkey.rsa,
          pad);
    if (buf_len < 0) ossl_raise(eRSAError, NULL);
    RSTRING(str)->len = buf_len;
    RSTRING(str)->ptr[buf_len] = 0;

    return str;
}

#private_encrypt(*args) ⇒ Object 



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# File 'ossl_pkey_rsa.c', line 293

static VALUE
ossl_rsa_private_encrypt(int argc, VALUE *argv, VALUE self)
{
    EVP_PKEY *pkey;
    int buf_len, pad;
    VALUE str, buffer, padding;

    GetPKeyRSA(self, pkey);
    if (!RSA_PRIVATE(self, pkey->pkey.rsa)) {
  ossl_raise(eRSAError, "private key needed.");
    } 
    rb_scan_args(argc, argv, "11", &buffer, &padding);
    pad = (argc == 1) ? RSA_PKCS1_PADDING : NUM2INT(padding);
    StringValue(buffer);
    str = rb_str_new(0, ossl_rsa_buf_size(pkey));
    buf_len = RSA_private_encrypt(RSTRING(buffer)->len, RSTRING(buffer)->ptr,
          RSTRING(str)->ptr, pkey->pkey.rsa,
          pad);
    if (buf_len < 0) ossl_raise(eRSAError, NULL);
    RSTRING(str)->len = buf_len;
    RSTRING(str)->ptr[buf_len] = 0;
    
    return str;
}

#public? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'ossl_pkey_rsa.c', line 160

static VALUE
ossl_rsa_is_public(VALUE self)
{
    EVP_PKEY *pkey;

    GetPKeyRSA(self, pkey);
    /*
     * SURPRISE! :-))
     * Every key is public at the same time!
     */
    return Qtrue;
}

#public_decrypt(*args) ⇒ Object 



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# File 'ossl_pkey_rsa.c', line 271

static VALUE
ossl_rsa_public_decrypt(int argc, VALUE *argv, VALUE self)
{
    EVP_PKEY *pkey;
    int buf_len, pad;
    VALUE str, buffer, padding;

    GetPKeyRSA(self, pkey);
    rb_scan_args(argc, argv, "11", &buffer, &padding);
    pad = (argc == 1) ? RSA_PKCS1_PADDING : NUM2INT(padding);
    StringValue(buffer);
    str = rb_str_new(0, ossl_rsa_buf_size(pkey));
    buf_len = RSA_public_decrypt(RSTRING(buffer)->len, RSTRING(buffer)->ptr,
         RSTRING(str)->ptr, pkey->pkey.rsa,
         pad);
    if (buf_len < 0) ossl_raise(eRSAError, NULL);
    RSTRING(str)->len = buf_len;
    RSTRING(str)->ptr[buf_len] = 0;
    
    return str;
}

#public_encrypt(*args) ⇒ Object 



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# File 'ossl_pkey_rsa.c', line 249

static VALUE
ossl_rsa_public_encrypt(int argc, VALUE *argv, VALUE self)
{
    EVP_PKEY *pkey;
    int buf_len, pad;
    VALUE str, buffer, padding;

    GetPKeyRSA(self, pkey);
    rb_scan_args(argc, argv, "11", &buffer, &padding);
    pad = (argc == 1) ? RSA_PKCS1_PADDING : NUM2INT(padding);
    StringValue(buffer);
    str = rb_str_new(0, ossl_rsa_buf_size(pkey));
    buf_len = RSA_public_encrypt(RSTRING(buffer)->len, RSTRING(buffer)->ptr,
         RSTRING(str)->ptr, pkey->pkey.rsa,
         pad);
    if (buf_len < 0) ossl_raise(eRSAError, NULL);
    RSTRING(str)->len = buf_len;
    RSTRING(str)->ptr[buf_len] = 0;

    return str;
}

#public_key ⇒ Object

Makes new instance RSA PUBLIC_KEY from PRIVATE_KEY



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# File 'ossl_pkey_rsa.c', line 398

static VALUE
ossl_rsa_to_public_key(VALUE self)
{
    EVP_PKEY *pkey;
    RSA *rsa;
    VALUE obj;
    
    GetPKeyRSA(self, pkey);
    /* err check performed by rsa_instance */
    rsa = RSAPublicKey_dup(pkey->pkey.rsa);
    obj = rsa_instance(CLASS_OF(self), rsa);
    if (obj == Qfalse) {
  RSA_free(rsa);
  ossl_raise(eRSAError, NULL);
    }
    return obj;
}

#to_der ⇒ Object 



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# File 'ossl_pkey_rsa.c', line 222

static VALUE
ossl_rsa_to_der(VALUE self)
{
    EVP_PKEY *pkey;
    int (*i2d_func)_((const RSA*, unsigned char**));
    unsigned char *p;
    long len;
    VALUE str;

    GetPKeyRSA(self, pkey);
    if(RSA_HAS_PRIVATE(pkey->pkey.rsa))
  i2d_func = i2d_RSAPrivateKey;
    else
  i2d_func = i2d_RSAPublicKey;
    if((len = i2d_func(pkey->pkey.rsa, NULL)) <= 0)
  ossl_raise(eRSAError, NULL);
    str = rb_str_new(0, len);
    p = RSTRING(str)->ptr;
    if(i2d_func(pkey->pkey.rsa, &p) < 0)
  ossl_raise(eRSAError, NULL);
    ossl_str_adjust(str, p);

    return str;
}

#to_text ⇒ Object

Prints all parameters of key to buffer INSECURE: PRIVATE INFORMATIONS CAN LEAK OUT!!! Don’t use :-)) (It’s up to you)



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# File 'ossl_pkey_rsa.c', line 375

static VALUE
ossl_rsa_to_text(VALUE self)
{
    EVP_PKEY *pkey;
    BIO *out;
    VALUE str;

    GetPKeyRSA(self, pkey);
    if (!(out = BIO_new(BIO_s_mem()))) {
  ossl_raise(eRSAError, NULL);
    }
    if (!RSA_print(out, pkey->pkey.rsa, 0)) { /* offset = 0 */
  BIO_free(out);
  ossl_raise(eRSAError, NULL);
    }
    str = ossl_membio2str(out);

    return str;
}