* [including the GNU Public Licence.]
*/
+
+/* NB: these functions have been "upgraded", the deprecated versions (which are
+ * compatibility wrappers using these functions) are in rsa_depr.c.
+ * - Geoff
+ */
+
#include <stdio.h>
#include <time.h>
#include "cryptlib.h"
#include <openssl/bn.h>
#include <openssl/rsa.h>
-RSA *RSA_generate_key(int bits, unsigned long e_value,
- void (*callback)(int,int,void *), void *cb_arg)
+int RSA_generate_key_ex(RSA *rsa, int bits, unsigned long e_value, BN_GENCB *cb)
{
- RSA *rsa=NULL;
BIGNUM *r0=NULL,*r1=NULL,*r2=NULL,*r3=NULL,*tmp;
int bitsp,bitsq,ok= -1,n=0,i;
BN_CTX *ctx=NULL,*ctx2=NULL;
bitsp=(bits+1)/2;
bitsq=bits-bitsp;
- rsa=RSA_new();
- if (rsa == NULL) goto err;
- /* set e */
- rsa->e=BN_new();
- if (rsa->e == NULL) goto err;
+ /* We need the RSA components non-NULL */
+ if(!rsa->n && ((rsa->n=BN_new()) == NULL)) goto err;
+ if(!rsa->d && ((rsa->d=BN_new()) == NULL)) goto err;
+ if(!rsa->e && ((rsa->e=BN_new()) == NULL)) goto err;
+ if(!rsa->p && ((rsa->p=BN_new()) == NULL)) goto err;
+ if(!rsa->q && ((rsa->q=BN_new()) == NULL)) goto err;
+ if(!rsa->dmp1 && ((rsa->dmp1=BN_new()) == NULL)) goto err;
+ if(!rsa->dmq1 && ((rsa->dmq1=BN_new()) == NULL)) goto err;
+ if(!rsa->iqmp && ((rsa->iqmp=BN_new()) == NULL)) goto err;
#if 1
/* The problem is when building with 8, 16, or 32 BN_ULONG,
/* generate p and q */
for (;;)
{
- rsa->p=BN_generate_prime(NULL,bitsp,0,NULL,NULL,callback,cb_arg);
- if (rsa->p == NULL) goto err;
+ if(!BN_generate_prime_ex(rsa->p, bitsp, 0, NULL, NULL, cb))
+ goto err;
if (!BN_sub(r2,rsa->p,BN_value_one())) goto err;
if (!BN_gcd(r1,r2,rsa->e,ctx)) goto err;
if (BN_is_one(r1)) break;
- if (callback != NULL) callback(2,n++,cb_arg);
- BN_free(rsa->p);
+ if(!BN_GENCB_call(cb, 2, n++))
+ goto err;
}
- if (callback != NULL) callback(3,0,cb_arg);
+ if(!BN_GENCB_call(cb, 3, 0))
+ goto err;
for (;;)
{
- rsa->q=BN_generate_prime(NULL,bitsq,0,NULL,NULL,callback,cb_arg);
- if (rsa->q == NULL) goto err;
+ if(!BN_generate_prime_ex(rsa->q, bitsq, 0, NULL, NULL, cb))
+ goto err;
if (!BN_sub(r2,rsa->q,BN_value_one())) goto err;
if (!BN_gcd(r1,r2,rsa->e,ctx)) goto err;
if (BN_is_one(r1) && (BN_cmp(rsa->p,rsa->q) != 0))
break;
- if (callback != NULL) callback(2,n++,cb_arg);
- BN_free(rsa->q);
+ if(!BN_GENCB_call(cb, 2, n++))
+ goto err;
}
- if (callback != NULL) callback(3,1,cb_arg);
+ if(!BN_GENCB_call(cb, 3, 1))
+ goto err;
if (BN_cmp(rsa->p,rsa->q) < 0)
{
tmp=rsa->p;
}
/* calculate n */
- rsa->n=BN_new();
- if (rsa->n == NULL) goto err;
if (!BN_mul(rsa->n,rsa->p,rsa->q,ctx)) goto err;
/* calculate d */
BN_CTX_end(ctx);
BN_CTX_free(ctx);
BN_CTX_free(ctx2);
-
- if (!ok)
- {
- if (rsa != NULL) RSA_free(rsa);
- return(NULL);
- }
- else
- return(rsa);
+
+ return ok;
}