#include <openssl/lhash.h>
#include <openssl/bn.h>
#include <openssl/rsa.h>
+#include <openssl/rand.h>
+#ifndef OPENSSL_NO_ENGINE
#include <openssl/engine.h>
-
-const char *RSA_version="RSA" OPENSSL_VERSION_PTEXT;
-
-static const RSA_METHOD *default_RSA_meth=NULL;
-static int rsa_meth_num=0;
-static STACK_OF(CRYPTO_EX_DATA_FUNCS) *rsa_meth=NULL;
-
-RSA *RSA_new(void)
- {
- return(RSA_new_method(NULL));
- }
-
-void RSA_set_default_openssl_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);
- }
- }
- }
-
-const RSA_METHOD *RSA_get_default_openssl_method(void)
-{
- if (default_RSA_meth == NULL)
- {
-#ifdef RSA_NULL
- default_RSA_meth=RSA_null_method();
-#else
-#if 0 /* was: #ifdef RSAref */
- default_RSA_meth=RSA_PKCS1_RSAref();
-#else
- default_RSA_meth=RSA_PKCS1_SSLeay();
-#endif
-#endif
- }
-
- return default_RSA_meth;
-}
-
-const RSA_METHOD *RSA_get_method(const RSA *rsa)
-{
- return ENGINE_get_RSA(rsa->engine);
-}
-
-#if 0
-RSA_METHOD *RSA_set_method(RSA *rsa, RSA_METHOD *meth)
-{
- RSA_METHOD *mtmp;
- mtmp = rsa->meth;
- if (mtmp->finish) mtmp->finish(rsa);
- rsa->meth = meth;
- if (meth->init) meth->init(rsa);
- return mtmp;
-}
-#else
-int RSA_set_method(RSA *rsa, ENGINE *engine)
-{
- ENGINE *mtmp;
- const 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
- {
- const 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);
- }
-
- if (engine)
- {
- if(ENGINE_init(engine))
- ret->engine = engine;
- else
- ret->engine = NULL;
- }
- else
- ret->engine=ENGINE_get_default_RSA();
-
- if(ret->engine == NULL)
- {
- RSAerr(RSA_F_RSA_NEW_METHOD,ERR_LIB_ENGINE);
- OPENSSL_free(ret);
- return NULL;
- }
-
- meth = ENGINE_get_RSA(ret->engine);
-
- ret->pad=0;
- ret->version=0;
- ret->n=NULL;
- ret->e=NULL;
- ret->d=NULL;
- ret->p=NULL;
- ret->q=NULL;
- ret->dmp1=NULL;
- ret->dmq1=NULL;
- ret->iqmp=NULL;
- ret->references=1;
- ret->_method_mod_n=NULL;
- ret->_method_mod_p=NULL;
- ret->_method_mod_q=NULL;
- ret->blinding=NULL;
- ret->bignum_data=NULL;
- ret->flags=meth->flags;
- CRYPTO_new_ex_data(rsa_meth,ret,&ret->ex_data);
- if ((meth->init != NULL) && !meth->init(ret))
- {
- CRYPTO_free_ex_data(rsa_meth, ret, &ret->ex_data);
- OPENSSL_free(ret);
- ret=NULL;
- }
- return(ret);
- }
-
-void RSA_free(RSA *r)
- {
- const RSA_METHOD *meth;
- int i;
-
- if (r == NULL) return;
-
- i=CRYPTO_add(&r->references,-1,CRYPTO_LOCK_RSA);
-#ifdef REF_PRINT
- REF_PRINT("RSA",r);
-#endif
- if (i > 0) return;
-#ifdef REF_CHECK
- if (i < 0)
- {
- fprintf(stderr,"RSA_free, bad reference count\n");
- abort();
- }
-#endif
-
- meth = ENGINE_get_RSA(r->engine);
- if (meth->finish != NULL)
- meth->finish(r);
- ENGINE_finish(r->engine);
-
- CRYPTO_free_ex_data(rsa_meth,r,&r->ex_data);
-
- if (r->n != NULL) BN_clear_free(r->n);
- if (r->e != NULL) BN_clear_free(r->e);
- if (r->d != NULL) BN_clear_free(r->d);
- if (r->p != NULL) BN_clear_free(r->p);
- if (r->q != NULL) BN_clear_free(r->q);
- if (r->dmp1 != NULL) BN_clear_free(r->dmp1);
- if (r->dmq1 != NULL) BN_clear_free(r->dmq1);
- if (r->iqmp != NULL) BN_clear_free(r->iqmp);
- if (r->blinding != NULL) BN_BLINDING_free(r->blinding);
- if (r->bignum_data != NULL) OPENSSL_free_locked(r->bignum_data);
- OPENSSL_free(r);
- }
-
-int RSA_up(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, 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)
- {
- if(CRYPTO_get_ex_new_index(rsa_meth_num, &rsa_meth, argl, argp,
- new_func, dup_func, free_func) < 0)
- return -1;
- return (rsa_meth_num++);
- }
-
-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(const RSA *r, int idx)
- {
- return(CRYPTO_get_ex_data(&r->ex_data,idx));
- }
-
-int RSA_size(const RSA *r)
- {
- return(BN_num_bytes(r->n));
- }
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, 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));
+#ifdef OPENSSL_FIPS
+ if(FIPS_mode() && !(rsa->flags & RSA_FLAG_NON_FIPS_ALLOW))
+ {
+ RSAerr(RSA_F_RSA_PRIVATE_ENCRYPT, RSA_R_OPERATION_NOT_ALLOWED_IN_FIPS_MODE);
+ return 0;
+ }
+#endif
+ return(rsa->meth->rsa_priv_enc(flen, from, to, rsa, padding));
}
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, 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));
+#ifdef OPENSSL_FIPS
+ if(FIPS_mode() && !(rsa->flags & RSA_FLAG_NON_FIPS_ALLOW))
+ {
+ RSAerr(RSA_F_RSA_PUBLIC_DECRYPT, RSA_R_OPERATION_NOT_ALLOWED_IN_FIPS_MODE);
+ return 0;
+ }
+#endif
+ return(rsa->meth->rsa_pub_dec(flen, from, to, rsa, padding));
}
-int RSA_flags(const RSA *r)
+int RSA_size(const RSA *r)
{
- return((r == NULL)?0:ENGINE_get_RSA(r->engine)->flags);
+ return(BN_num_bytes(r->n));
}
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)
+int RSA_blinding_on(RSA *rsa, BN_CTX *ctx)
{
- BIGNUM *A,*Ai;
- BN_CTX *ctx;
int ret=0;
- if (p_ctx == NULL)
- {
- if ((ctx=BN_CTX_new()) == NULL) goto err;
- }
- else
- ctx=p_ctx;
-
if (rsa->blinding != NULL)
- BN_BLINDING_free(rsa->blinding);
+ RSA_blinding_off(rsa);
- BN_CTX_start(ctx);
- A = BN_CTX_get(ctx);
- if (!BN_rand_range(A,rsa->n)) goto err;
- if ((Ai=BN_mod_inverse(NULL,A,rsa->n,ctx)) == NULL) goto err;
+ rsa->blinding = RSA_setup_blinding(rsa, ctx);
+ if (rsa->blinding == 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;
- BN_free(Ai);
+ rsa->flags |= RSA_FLAG_BLINDING;
+ rsa->flags &= ~RSA_FLAG_NO_BLINDING;
ret=1;
err:
- BN_CTX_end(ctx);
- if (ctx != p_ctx) BN_CTX_free(ctx);
return(ret);
}
-int RSA_memory_lock(RSA *r)
- {
- int i,j,k,off;
- char *p;
- BIGNUM *bn,**t[6],*b;
- BN_ULONG *ul;
+static BIGNUM *rsa_get_public_exp(const BIGNUM *d, const BIGNUM *p,
+ const BIGNUM *q, BN_CTX *ctx)
+{
+ BIGNUM *ret = NULL, *r0, *r1, *r2;
+
+ if (d == NULL || p == NULL || q == NULL)
+ return NULL;
+
+ BN_CTX_start(ctx);
+ r0 = BN_CTX_get(ctx);
+ r1 = BN_CTX_get(ctx);
+ r2 = BN_CTX_get(ctx);
+ if (r2 == NULL)
+ goto err;
- if (r->d == NULL) return(1);
- t[0]= &r->d;
- t[1]= &r->p;
- t[2]= &r->q;
- t[3]= &r->dmp1;
- t[4]= &r->dmq1;
- t[5]= &r->iqmp;
- k=sizeof(BIGNUM)*6;
- off=k/sizeof(BN_ULONG)+1;
- j=1;
- for (i=0; i<6; i++)
- j+= (*t[i])->top;
- if ((p=OPENSSL_malloc_locked((off+j)*sizeof(BN_ULONG))) == NULL)
+ if (!BN_sub(r1, p, BN_value_one())) goto err;
+ if (!BN_sub(r2, q, BN_value_one())) goto err;
+ if (!BN_mul(r0, r1, r2, ctx)) goto err;
+
+ ret = BN_mod_inverse(NULL, d, r0, ctx);
+err:
+ BN_CTX_end(ctx);
+ return ret;
+}
+
+BN_BLINDING *RSA_setup_blinding(RSA *rsa, BN_CTX *in_ctx)
+{
+ BIGNUM local_n;
+ BIGNUM *e,*n;
+ BN_CTX *ctx;
+ BN_BLINDING *ret = NULL;
+
+ if (in_ctx == NULL)
+ {
+ if ((ctx = BN_CTX_new()) == NULL) return 0;
+ }
+ else
+ ctx = in_ctx;
+
+ BN_CTX_start(ctx);
+ e = BN_CTX_get(ctx);
+ if (e == NULL)
{
- RSAerr(RSA_F_MEMORY_LOCK,ERR_R_MALLOC_FAILURE);
- return(0);
+ RSAerr(RSA_F_RSA_SETUP_BLINDING, ERR_R_MALLOC_FAILURE);
+ goto err;
}
- bn=(BIGNUM *)p;
- ul=(BN_ULONG *)&(p[off]);
- for (i=0; i<6; i++)
+
+ if (rsa->e == NULL)
{
- b= *(t[i]);
- *(t[i])= &(bn[i]);
- memcpy((char *)&(bn[i]),(char *)b,sizeof(BIGNUM));
- bn[i].flags=BN_FLG_STATIC_DATA;
- bn[i].d=ul;
- memcpy((char *)ul,b->d,sizeof(BN_ULONG)*b->top);
- ul+=b->top;
- BN_clear_free(b);
+ e = rsa_get_public_exp(rsa->d, rsa->p, rsa->q, ctx);
+ if (e == NULL)
+ {
+ RSAerr(RSA_F_RSA_SETUP_BLINDING, RSA_R_NO_PUBLIC_EXPONENT);
+ goto err;
+ }
}
+ else
+ e = rsa->e;
+
- /* I should fix this so it can still be done */
- r->flags&= ~(RSA_FLAG_CACHE_PRIVATE|RSA_FLAG_CACHE_PUBLIC);
+ 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], 0.0);
+ }
- r->bignum_data=p;
- return(1);
- }
+ if (!(rsa->flags & RSA_FLAG_NO_CONSTTIME))
+ {
+ /* Set BN_FLG_CONSTTIME flag */
+ n = &local_n;
+ BN_with_flags(n, rsa->n, BN_FLG_CONSTTIME);
+ }
+ else
+ n = rsa->n;
+
+ ret = BN_BLINDING_create_param(NULL, e, n, ctx,
+ rsa->meth->bn_mod_exp, rsa->_method_mod_n);
+ if (ret == NULL)
+ {
+ RSAerr(RSA_F_RSA_SETUP_BLINDING, ERR_R_BN_LIB);
+ goto err;
+ }
+ BN_BLINDING_set_thread_id(ret, CRYPTO_thread_id());
+err:
+ BN_CTX_end(ctx);
+ if (in_ctx == NULL)
+ BN_CTX_free(ctx);
+ if(rsa->e == NULL)
+ BN_free(e);
+ return ret;
+}
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