#include <openssl/lhash.h>
#include <openssl/bn.h>
#include <openssl/rsa.h>
+#include <openssl/rand.h>
+#ifndef OPENSSL_NO_ENGINE
#include <openssl/engine.h>
+#endif
const char *RSA_version="RSA" OPENSSL_VERSION_PTEXT;
-static RSA_METHOD *default_RSA_meth=NULL;
-static int rsa_meth_num=0;
-static STACK_OF(CRYPTO_EX_DATA_FUNCS) *rsa_meth=NULL;
+static const RSA_METHOD *default_RSA_meth=NULL;
RSA *RSA_new(void)
{
- return(RSA_new_method(NULL));
+ RSA *r=RSA_new_method(NULL);
+
+ return r;
}
-void RSA_set_default_openssl_method(RSA_METHOD *meth)
+void RSA_set_default_method(const RSA_METHOD *meth)
{
- ENGINE *e;
- /* We'll need to notify the "openssl" ENGINE of this
- * change too. We won't bother locking things down at
- * our end as there was never any locking in these
- * functions! */
- if(default_RSA_meth != meth)
- {
- default_RSA_meth = meth;
- e = ENGINE_by_id("openssl");
- if(e)
- {
- ENGINE_set_RSA(e, meth);
- ENGINE_free(e);
- }
- }
+ default_RSA_meth = meth;
}
-RSA_METHOD *RSA_get_default_openssl_method(void)
-{
+const RSA_METHOD *RSA_get_default_method(void)
+ {
if (default_RSA_meth == NULL)
{
#ifdef RSA_NULL
default_RSA_meth=RSA_null_method();
#else
-#ifdef RSAref
+#if 0 /* was: #ifdef RSAref */
default_RSA_meth=RSA_PKCS1_RSAref();
#else
default_RSA_meth=RSA_PKCS1_SSLeay();
}
return default_RSA_meth;
-}
+ }
-RSA_METHOD *RSA_get_method(RSA *rsa)
-{
- return ENGINE_get_RSA(rsa->engine);
-}
+const RSA_METHOD *RSA_get_method(const RSA *rsa)
+ {
+ return rsa->meth;
+ }
-#if 0
-RSA_METHOD *RSA_set_method(RSA *rsa, RSA_METHOD *meth)
-{
- RSA_METHOD *mtmp;
+int RSA_set_method(RSA *rsa, const RSA_METHOD *meth)
+ {
+ /* NB: The caller is specifically setting a method, so it's not up to us
+ * to deal with which ENGINE it comes from. */
+ const RSA_METHOD *mtmp;
mtmp = rsa->meth;
if (mtmp->finish) mtmp->finish(rsa);
+#ifndef OPENSSL_NO_ENGINE
+ if (rsa->engine)
+ {
+ ENGINE_finish(rsa->engine);
+ rsa->engine = NULL;
+ }
+#endif
rsa->meth = meth;
if (meth->init) meth->init(rsa);
- return mtmp;
-}
-#else
-int RSA_set_method(RSA *rsa, ENGINE *engine)
-{
- ENGINE *mtmp;
- RSA_METHOD *meth;
- mtmp = rsa->engine;
- meth = ENGINE_get_RSA(mtmp);
- if (!ENGINE_init(engine))
- return 0;
- if (meth->finish) meth->finish(rsa);
- rsa->engine = engine;
- meth = ENGINE_get_RSA(engine);
- if (meth->init) meth->init(rsa);
- /* SHOULD ERROR CHECK THIS!!! */
- ENGINE_finish(mtmp);
return 1;
-}
-#endif
+ }
-#if 0
-RSA *RSA_new_method(RSA_METHOD *meth)
-#else
RSA *RSA_new_method(ENGINE *engine)
-#endif
{
- RSA_METHOD *meth;
RSA *ret;
ret=(RSA *)OPENSSL_malloc(sizeof(RSA));
if (ret == NULL)
{
RSAerr(RSA_F_RSA_NEW_METHOD,ERR_R_MALLOC_FAILURE);
- return(NULL);
+ return NULL;
}
- if (engine == NULL)
+ ret->meth = RSA_get_default_method();
+#ifndef OPENSSL_NO_ENGINE
+ if (engine)
{
- if((ret->engine=ENGINE_get_default_RSA()) == NULL)
+ if (!ENGINE_init(engine))
{
+ RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_ENGINE_LIB);
OPENSSL_free(ret);
return NULL;
}
+ ret->engine = engine;
}
else
- ret->engine=engine;
- meth = ENGINE_get_RSA(ret->engine);
+ ret->engine = ENGINE_get_default_RSA();
+ if(ret->engine)
+ {
+ ret->meth = ENGINE_get_RSA(ret->engine);
+ if(!ret->meth)
+ {
+ RSAerr(RSA_F_RSA_NEW_METHOD,
+ ERR_R_ENGINE_LIB);
+ ENGINE_finish(ret->engine);
+ OPENSSL_free(ret);
+ return NULL;
+ }
+ }
+#endif
ret->pad=0;
ret->version=0;
ret->_method_mod_q=NULL;
ret->blinding=NULL;
ret->bignum_data=NULL;
- ret->flags=meth->flags;
- if ((meth->init != NULL) && !meth->init(ret))
+ ret->flags=ret->meth->flags;
+ CRYPTO_new_ex_data(CRYPTO_EX_INDEX_RSA, ret, &ret->ex_data);
+ if ((ret->meth->init != NULL) && !ret->meth->init(ret))
{
+#ifndef OPENSSL_NO_ENGINE
+ if (ret->engine)
+ ENGINE_finish(ret->engine);
+#endif
+ CRYPTO_free_ex_data(CRYPTO_EX_INDEX_RSA, ret, &ret->ex_data);
OPENSSL_free(ret);
ret=NULL;
}
- else
- CRYPTO_new_ex_data(rsa_meth,ret,&ret->ex_data);
return(ret);
}
void RSA_free(RSA *r)
{
- RSA_METHOD *meth;
int i;
if (r == NULL) return;
}
#endif
- CRYPTO_free_ex_data(rsa_meth,r,&r->ex_data);
+ if (r->meth->finish)
+ r->meth->finish(r);
+#ifndef OPENSSL_NO_ENGINE
+ if (r->engine)
+ ENGINE_finish(r->engine);
+#endif
- meth = ENGINE_get_RSA(r->engine);
- if (meth->finish != NULL)
- meth->finish(r);
- ENGINE_finish(r->engine);
+ CRYPTO_free_ex_data(CRYPTO_EX_INDEX_RSA, r, &r->ex_data);
if (r->n != NULL) BN_clear_free(r->n);
if (r->e != NULL) BN_clear_free(r->e);
OPENSSL_free(r);
}
+int RSA_up_ref(RSA *r)
+ {
+ int i = CRYPTO_add(&r->references, 1, CRYPTO_LOCK_RSA);
+#ifdef REF_PRINT
+ REF_PRINT("RSA",r);
+#endif
+#ifdef REF_CHECK
+ if (i < 2)
+ {
+ fprintf(stderr, "RSA_up_ref, bad reference count\n");
+ abort();
+ }
+#endif
+ return ((i > 1) ? 1 : 0);
+ }
+
int RSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
{
- rsa_meth_num++;
- return(CRYPTO_get_ex_new_index(rsa_meth_num-1,
- &rsa_meth,argl,argp,new_func,dup_func,free_func));
+ return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_RSA, argl, argp,
+ new_func, dup_func, free_func);
}
int RSA_set_ex_data(RSA *r, int idx, void *arg)
return(CRYPTO_set_ex_data(&r->ex_data,idx,arg));
}
-void *RSA_get_ex_data(RSA *r, int idx)
+void *RSA_get_ex_data(const RSA *r, int idx)
{
return(CRYPTO_get_ex_data(&r->ex_data,idx));
}
-int RSA_size(RSA *r)
+int RSA_size(const RSA *r)
{
return(BN_num_bytes(r->n));
}
-int RSA_public_encrypt(int flen, unsigned char *from, unsigned char *to,
+int RSA_public_encrypt(int flen, const unsigned char *from, unsigned char *to,
RSA *rsa, int padding)
{
- return(ENGINE_get_RSA(rsa->engine)->rsa_pub_enc(flen,
- from, to, rsa, padding));
+ return(rsa->meth->rsa_pub_enc(flen, from, to, rsa, padding));
}
-int RSA_private_encrypt(int flen, unsigned char *from, unsigned char *to,
+int RSA_private_encrypt(int flen, const unsigned char *from, unsigned char *to,
RSA *rsa, int padding)
{
- return(ENGINE_get_RSA(rsa->engine)->rsa_priv_enc(flen,
- from, to, rsa, padding));
+ return(rsa->meth->rsa_priv_enc(flen, from, to, rsa, padding));
}
-int RSA_private_decrypt(int flen, unsigned char *from, unsigned char *to,
+int RSA_private_decrypt(int flen, const unsigned char *from, unsigned char *to,
RSA *rsa, int padding)
{
- return(ENGINE_get_RSA(rsa->engine)->rsa_priv_dec(flen,
- from, to, rsa, padding));
+ return(rsa->meth->rsa_priv_dec(flen, from, to, rsa, padding));
}
-int RSA_public_decrypt(int flen, unsigned char *from, unsigned char *to,
+int RSA_public_decrypt(int flen, const unsigned char *from, unsigned char *to,
RSA *rsa, int padding)
{
- return(ENGINE_get_RSA(rsa->engine)->rsa_pub_dec(flen,
- from, to, rsa, padding));
+ return(rsa->meth->rsa_pub_dec(flen, from, to, rsa, padding));
}
-int RSA_flags(RSA *r)
+int RSA_flags(const RSA *r)
{
- return((r == NULL)?0:ENGINE_get_RSA(r->engine)->flags);
+ return((r == NULL)?0:r->meth->flags);
}
void RSA_blinding_off(RSA *rsa)
BN_BLINDING_free(rsa->blinding);
rsa->blinding=NULL;
}
- rsa->flags&= ~RSA_FLAG_BLINDING;
+ rsa->flags &= ~RSA_FLAG_BLINDING;
+ rsa->flags |= RSA_FLAG_NO_BLINDING;
}
int RSA_blinding_on(RSA *rsa, BN_CTX *p_ctx)
if (rsa->blinding != NULL)
BN_BLINDING_free(rsa->blinding);
+ /* NB: similar code appears in setup_blinding (rsa_eay.c);
+ * this should be placed in a new function of its own, but for reasons
+ * of binary compatibility can't */
+
BN_CTX_start(ctx);
A = BN_CTX_get(ctx);
- if (!BN_rand(A,BN_num_bits(rsa->n)-1,1,0)) goto err;
+ if ((RAND_status() == 0) && rsa->d != NULL && rsa->d->d != NULL)
+ {
+ /* if PRNG is not properly seeded, resort to secret exponent as unpredictable seed */
+ RAND_add(rsa->d->d, rsa->d->dmax * sizeof rsa->d->d[0], 0);
+ if (!BN_pseudo_rand_range(A,rsa->n)) goto err;
+ }
+ else
+ {
+ if (!BN_rand_range(A,rsa->n)) goto err;
+ }
if ((Ai=BN_mod_inverse(NULL,A,rsa->n,ctx)) == NULL) goto err;
- if (!ENGINE_get_RSA(rsa->engine)->bn_mod_exp(A,A,
- rsa->e,rsa->n,ctx,rsa->_method_mod_n))
- goto err;
- rsa->blinding=BN_BLINDING_new(A,Ai,rsa->n);
- rsa->flags|=RSA_FLAG_BLINDING;
+ if (!rsa->meth->bn_mod_exp(A,A,rsa->e,rsa->n,ctx,rsa->_method_mod_n))
+ goto err;
+ if ((rsa->blinding=BN_BLINDING_new(A,Ai,rsa->n)) == NULL) goto err;
+ /* to make things thread-safe without excessive locking,
+ * rsa->blinding will be used just by the current thread: */
+ rsa->blinding->thread_id = CRYPTO_thread_id();
+ rsa->flags |= RSA_FLAG_BLINDING;
+ rsa->flags &= ~RSA_FLAG_NO_BLINDING;
BN_free(Ai);
ret=1;
err:
r->bignum_data=p;
return(1);
}
-
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