502 lines
11 KiB
C
502 lines
11 KiB
C
/*
|
|
* $Id$
|
|
* 'OpenSSL for Ruby' project
|
|
* Copyright (C) 2001-2002 Michal Rokos <m.rokos@sh.cvut.cz>
|
|
* All rights reserved.
|
|
*/
|
|
/*
|
|
* This program is licenced under the same licence as Ruby.
|
|
* (See the file 'LICENCE'.)
|
|
*/
|
|
#if !defined(OPENSSL_NO_RSA)
|
|
|
|
#include "ossl.h"
|
|
|
|
#define GetPKeyRSA(obj, pkey) do { \
|
|
GetPKey(obj, pkey); \
|
|
if (EVP_PKEY_type(pkey->type) != EVP_PKEY_RSA) { /* PARANOIA? */ \
|
|
ossl_raise(rb_eRuntimeError, "THIS IS NOT A RSA!") ; \
|
|
} \
|
|
} while (0)
|
|
|
|
#define RSA_HAS_PRIVATE(rsa) ((rsa)->p && (rsa)->q)
|
|
|
|
#ifdef OSSL_ENGINE_ENABLED
|
|
# define RSA_PRIVATE(rsa) (RSA_HAS_PRIVATE(rsa) || (rsa)->engine)
|
|
#else
|
|
# define RSA_PRIVATE(rsa) RSA_HAS_PRIVATE(rsa)
|
|
#endif
|
|
|
|
/*
|
|
* Classes
|
|
*/
|
|
VALUE cRSA;
|
|
VALUE eRSAError;
|
|
|
|
/*
|
|
* Public
|
|
*/
|
|
static VALUE
|
|
rsa_instance(VALUE klass, RSA *rsa)
|
|
{
|
|
EVP_PKEY *pkey;
|
|
VALUE obj;
|
|
|
|
if (!rsa) {
|
|
return Qfalse;
|
|
}
|
|
if (!(pkey = EVP_PKEY_new())) {
|
|
return Qfalse;
|
|
}
|
|
if (!EVP_PKEY_assign_RSA(pkey, rsa)) {
|
|
EVP_PKEY_free(pkey);
|
|
return Qfalse;
|
|
}
|
|
WrapPKey(klass, obj, pkey);
|
|
|
|
return obj;
|
|
}
|
|
|
|
VALUE
|
|
ossl_rsa_new(EVP_PKEY *pkey)
|
|
{
|
|
VALUE obj;
|
|
|
|
if (!pkey) {
|
|
obj = rsa_instance(cRSA, RSA_new());
|
|
}
|
|
else {
|
|
if (EVP_PKEY_type(pkey->type) != EVP_PKEY_RSA) {
|
|
ossl_raise(rb_eTypeError, "Not a RSA key!");
|
|
}
|
|
WrapPKey(cRSA, obj, pkey);
|
|
}
|
|
if (obj == Qfalse) {
|
|
ossl_raise(eRSAError, NULL);
|
|
}
|
|
|
|
return obj;
|
|
}
|
|
|
|
/*
|
|
* Private
|
|
*/
|
|
static RSA *
|
|
rsa_generate(int size, int exp)
|
|
{
|
|
return RSA_generate_key(size, exp,
|
|
rb_block_given_p() ? ossl_generate_cb : NULL,
|
|
NULL);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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);
|
|
rb_scan_args(argc, argv, "11", &arg, &pass);
|
|
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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
static VALUE
|
|
ossl_rsa_is_private(VALUE self)
|
|
{
|
|
EVP_PKEY *pkey;
|
|
|
|
GetPKeyRSA(self, pkey);
|
|
|
|
return (RSA_PRIVATE(pkey->pkey.rsa)) ? Qtrue : Qfalse;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
#define ossl_rsa_buf_size(pkey) (RSA_size((pkey)->pkey.rsa)+16)
|
|
|
|
static VALUE
|
|
ossl_rsa_public_encrypt(VALUE self, VALUE buffer)
|
|
{
|
|
EVP_PKEY *pkey;
|
|
int buf_len;
|
|
VALUE str;
|
|
|
|
GetPKeyRSA(self, pkey);
|
|
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,
|
|
RSA_PKCS1_PADDING);
|
|
if (buf_len < 0) ossl_raise(eRSAError, NULL);
|
|
RSTRING(str)->len = buf_len;
|
|
RSTRING(str)->ptr[buf_len] = 0;
|
|
|
|
return str;
|
|
}
|
|
|
|
static VALUE
|
|
ossl_rsa_public_decrypt(VALUE self, VALUE buffer)
|
|
{
|
|
EVP_PKEY *pkey;
|
|
int buf_len;
|
|
VALUE str;
|
|
|
|
GetPKeyRSA(self, pkey);
|
|
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,
|
|
RSA_PKCS1_PADDING);
|
|
if(buf_len < 0) ossl_raise(eRSAError, NULL);
|
|
RSTRING(str)->len = buf_len;
|
|
RSTRING(str)->ptr[buf_len] = 0;
|
|
|
|
return str;
|
|
}
|
|
|
|
static VALUE
|
|
ossl_rsa_private_encrypt(VALUE self, VALUE buffer)
|
|
{
|
|
EVP_PKEY *pkey;
|
|
int buf_len;
|
|
VALUE str;
|
|
|
|
GetPKeyRSA(self, pkey);
|
|
if (!RSA_PRIVATE(pkey->pkey.rsa)) {
|
|
ossl_raise(eRSAError, "PRIVATE key needed for this operation!");
|
|
}
|
|
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,
|
|
RSA_PKCS1_PADDING);
|
|
if (buf_len < 0) ossl_raise(eRSAError, NULL);
|
|
RSTRING(str)->len = buf_len;
|
|
RSTRING(str)->ptr[buf_len] = 0;
|
|
|
|
return str;
|
|
}
|
|
|
|
static VALUE
|
|
ossl_rsa_private_decrypt(VALUE self, VALUE buffer)
|
|
{
|
|
EVP_PKEY *pkey;
|
|
int buf_len;
|
|
VALUE str;
|
|
|
|
GetPKeyRSA(self, pkey);
|
|
if (!RSA_PRIVATE(pkey->pkey.rsa)) {
|
|
ossl_raise(eRSAError, "Private RSA key needed!");
|
|
}
|
|
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,
|
|
RSA_PKCS1_PADDING);
|
|
if (buf_len < 0) ossl_raise(eRSAError, NULL);
|
|
RSTRING(str)->len = buf_len;
|
|
RSTRING(str)->ptr[buf_len] = 0;
|
|
|
|
return str;
|
|
}
|
|
|
|
/*
|
|
* Stores all parameters of key to the hash
|
|
* INSECURE: PRIVATE INFORMATIONS CAN LEAK OUT!!!
|
|
* Don't use :-)) (I's up to you)
|
|
*/
|
|
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;
|
|
}
|
|
|
|
/*
|
|
* Prints all parameters of key to buffer
|
|
* INSECURE: PRIVATE INFORMATIONS CAN LEAK OUT!!!
|
|
* Don't use :-)) (It's up to you)
|
|
*/
|
|
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;
|
|
}
|
|
|
|
/*
|
|
* Makes new instance RSA PUBLIC_KEY from PRIVATE_KEY
|
|
*/
|
|
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;
|
|
}
|
|
|
|
/*
|
|
* TODO: Test me
|
|
extern BN_CTX *ossl_bn_ctx;
|
|
|
|
static VALUE
|
|
ossl_rsa_blinding_on(VALUE self)
|
|
{
|
|
EVP_PKEY *pkey;
|
|
|
|
GetPKeyRSA(self, pkey);
|
|
|
|
if (RSA_blinding_on(pkey->pkey.rsa, ossl_bn_ctx) != 1) {
|
|
ossl_raise(eRSAError, NULL);
|
|
}
|
|
return self;
|
|
}
|
|
|
|
static VALUE
|
|
ossl_rsa_blinding_off(VALUE self)
|
|
{
|
|
EVP_PKEY *pkey;
|
|
|
|
GetPKeyRSA(self, pkey);
|
|
RSA_blinding_off(pkey->pkey.rsa);
|
|
|
|
return self;
|
|
}
|
|
*/
|
|
|
|
OSSL_PKEY_BN(rsa, n);
|
|
OSSL_PKEY_BN(rsa, e);
|
|
OSSL_PKEY_BN(rsa, d);
|
|
OSSL_PKEY_BN(rsa, p);
|
|
OSSL_PKEY_BN(rsa, q);
|
|
OSSL_PKEY_BN(rsa, dmp1);
|
|
OSSL_PKEY_BN(rsa, dmq1);
|
|
OSSL_PKEY_BN(rsa, iqmp);
|
|
|
|
/*
|
|
* INIT
|
|
*/
|
|
void
|
|
Init_ossl_rsa()
|
|
{
|
|
eRSAError = rb_define_class_under(mPKey, "RSAError", ePKeyError);
|
|
|
|
cRSA = rb_define_class_under(mPKey, "RSA", cPKey);
|
|
|
|
rb_define_singleton_method(cRSA, "generate", ossl_rsa_s_generate, -1);
|
|
rb_define_method(cRSA, "initialize", ossl_rsa_initialize, -1);
|
|
|
|
rb_define_method(cRSA, "public?", ossl_rsa_is_public, 0);
|
|
rb_define_method(cRSA, "private?", ossl_rsa_is_private, 0);
|
|
rb_define_method(cRSA, "to_text", ossl_rsa_to_text, 0);
|
|
rb_define_method(cRSA, "export", ossl_rsa_export, -1);
|
|
rb_define_alias(cRSA, "to_pem", "export");
|
|
rb_define_alias(cRSA, "to_s", "export");
|
|
rb_define_method(cRSA, "to_der", ossl_rsa_to_der, 0);
|
|
rb_define_method(cRSA, "public_key", ossl_rsa_to_public_key, 0);
|
|
rb_define_method(cRSA, "public_encrypt", ossl_rsa_public_encrypt, 1);
|
|
rb_define_method(cRSA, "public_decrypt", ossl_rsa_public_decrypt, 1);
|
|
rb_define_method(cRSA, "private_encrypt", ossl_rsa_private_encrypt, 1);
|
|
rb_define_method(cRSA, "private_decrypt", ossl_rsa_private_decrypt, 1);
|
|
|
|
DEF_OSSL_PKEY_BN(cRSA, rsa, n);
|
|
DEF_OSSL_PKEY_BN(cRSA, rsa, e);
|
|
DEF_OSSL_PKEY_BN(cRSA, rsa, d);
|
|
DEF_OSSL_PKEY_BN(cRSA, rsa, p);
|
|
DEF_OSSL_PKEY_BN(cRSA, rsa, q);
|
|
DEF_OSSL_PKEY_BN(cRSA, rsa, dmp1);
|
|
DEF_OSSL_PKEY_BN(cRSA, rsa, dmq1);
|
|
DEF_OSSL_PKEY_BN(cRSA, rsa, iqmp);
|
|
|
|
rb_define_method(cRSA, "params", ossl_rsa_get_params, 0);
|
|
|
|
/*
|
|
* TODO: Test it
|
|
rb_define_method(cRSA, "blinding_on!", ossl_rsa_blinding_on, 0);
|
|
rb_define_method(cRSA, "blinding_off!", ossl_rsa_blinding_off, 0);
|
|
*/
|
|
}
|
|
|
|
#else /* defined NO_RSA */
|
|
# warning >>> OpenSSL is compiled without RSA support <<<
|
|
void
|
|
Init_ossl_rsa()
|
|
{
|
|
rb_warning("OpenSSL is compiled without RSA support");
|
|
}
|
|
#endif /* NO_RSA */
|
|
|