-/* crypto/rsa/rsa_gen.c */
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
- *
+ *
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
+ *
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
- *
+ *
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
+ * 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
+ *
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
- *
+ *
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
-#define OPENSSL_FIPSAPI
-
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <openssl/err.h>
#include <openssl/bn.h>
-#include <openssl/rsa.h>
-
-#ifdef OPENSSL_FIPS
-#include <openssl/fips.h>
-
-extern int fips_check_rsa(RSA *rsa);
-#endif
+#include "rsa_locl.h"
/* X9.31 RSA key derivation and generation */
-int RSA_X931_derive_ex(RSA *rsa, BIGNUM *p1, BIGNUM *p2, BIGNUM *q1, BIGNUM *q2,
- const BIGNUM *Xp1, const BIGNUM *Xp2, const BIGNUM *Xp,
- const BIGNUM *Xq1, const BIGNUM *Xq2, const BIGNUM *Xq,
- const BIGNUM *e, BN_GENCB *cb)
- {
- BIGNUM *r0=NULL,*r1=NULL,*r2=NULL,*r3=NULL;
- BN_CTX *ctx=NULL,*ctx2=NULL;
-
- if (!rsa)
- goto err;
-
- ctx = BN_CTX_new();
- BN_CTX_start(ctx);
- if (!ctx)
- goto err;
-
- r0 = BN_CTX_get(ctx);
- r1 = BN_CTX_get(ctx);
- r2 = BN_CTX_get(ctx);
- r3 = BN_CTX_get(ctx);
-
- if (r3 == NULL)
- goto err;
- if (!rsa->e)
- {
- rsa->e = BN_dup(e);
- if (!rsa->e)
- goto err;
- }
- else
- e = rsa->e;
-
- /* If not all parameters present only calculate what we can.
- * This allows test programs to output selective parameters.
- */
-
- if (Xp && !rsa->p)
- {
- rsa->p = BN_new();
- if (!rsa->p)
- goto err;
-
- if (!BN_X931_derive_prime_ex(rsa->p, p1, p2,
- Xp, Xp1, Xp2, e, ctx, cb))
- goto err;
- }
-
- if (Xq && !rsa->q)
- {
- rsa->q = BN_new();
- if (!rsa->q)
- goto err;
- if (!BN_X931_derive_prime_ex(rsa->q, q1, q2,
- Xq, Xq1, Xq2, e, ctx, cb))
- goto err;
- }
-
- if (!rsa->p || !rsa->q)
- {
- BN_CTX_end(ctx);
- BN_CTX_free(ctx);
- return 2;
- }
-
- /* Since both primes are set we can now calculate all remaining
- * components.
- */
-
- /* 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 */
- if (!BN_sub(r1,rsa->p,BN_value_one()))
- goto err; /* p-1 */
- if (!BN_sub(r2,rsa->q,BN_value_one()))
- goto err; /* q-1 */
- if (!BN_mul(r0,r1,r2,ctx))
- goto err; /* (p-1)(q-1) */
-
- if (!BN_gcd(r3, r1, r2, ctx))
- goto err;
-
- if (!BN_div(r0, NULL, r0, r3, ctx))
- goto err; /* LCM((p-1)(q-1)) */
-
- ctx2 = BN_CTX_new();
- if (!ctx2)
- goto err;
-
- rsa->d=BN_mod_inverse(NULL,rsa->e,r0,ctx2); /* d */
- if (rsa->d == NULL)
- goto err;
-
- /* calculate d mod (p-1) */
- rsa->dmp1=BN_new();
- if (rsa->dmp1 == NULL)
- goto err;
- if (!BN_mod(rsa->dmp1,rsa->d,r1,ctx))
- goto err;
-
- /* calculate d mod (q-1) */
- rsa->dmq1=BN_new();
- if (rsa->dmq1 == NULL)
- goto err;
- if (!BN_mod(rsa->dmq1,rsa->d,r2,ctx))
- goto err;
-
- /* calculate inverse of q mod p */
- rsa->iqmp=BN_mod_inverse(NULL,rsa->q,rsa->p,ctx2);
-
- err:
- if (ctx)
- {
- BN_CTX_end(ctx);
- BN_CTX_free(ctx);
- }
- if (ctx2)
- BN_CTX_free(ctx2);
- /* If this is set all calls successful */
- if (rsa->iqmp != NULL)
- return 1;
-
- return 0;
-
- }
-
-int RSA_X931_generate_key_ex(RSA *rsa, int bits, const BIGNUM *e, BN_GENCB *cb)
- {
- int ok = 0;
- BIGNUM *Xp = NULL, *Xq = NULL;
- BN_CTX *ctx = NULL;
-
-#ifdef OPENSSL_FIPS
- if (FIPS_mode() && !(rsa->flags & RSA_FLAG_NON_FIPS_ALLOW) &&
- (bits < OPENSSL_RSA_FIPS_MIN_MODULUS_BITS))
- {
- FIPSerr(FIPS_F_RSA_X931_GENERATE_KEY_EX,FIPS_R_KEY_TOO_SHORT);
- return 0;
- }
-
- if (bits & 0xff)
- {
- FIPSerr(FIPS_F_RSA_X931_GENERATE_KEY_EX,FIPS_R_INVALID_KEY_LENGTH);
- return 0;
- }
-
- if(FIPS_selftest_failed())
- {
- FIPSerr(FIPS_F_RSA_X931_GENERATE_KEY_EX,FIPS_R_FIPS_SELFTEST_FAILED);
- return 0;
- }
- if (!fips_check_rsa_prng(rsa, bits))
- return 0;
-#endif
-
- ctx = BN_CTX_new();
- if (!ctx)
- goto error;
-
- BN_CTX_start(ctx);
- Xp = BN_CTX_get(ctx);
- Xq = BN_CTX_get(ctx);
- if (!BN_X931_generate_Xpq(Xp, Xq, bits, ctx))
- goto error;
-
- rsa->p = BN_new();
- rsa->q = BN_new();
- if (!rsa->p || !rsa->q)
- goto error;
-
- /* Generate two primes from Xp, Xq */
-
- if (!BN_X931_generate_prime_ex(rsa->p, NULL, NULL, NULL, NULL, Xp,
- e, ctx, cb))
- goto error;
-
- if (!BN_X931_generate_prime_ex(rsa->q, NULL, NULL, NULL, NULL, Xq,
- e, ctx, cb))
- goto error;
-
- /* Since rsa->p and rsa->q are valid this call will just derive
- * remaining RSA components.
- */
-
- if (!RSA_X931_derive_ex(rsa, NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL, NULL, NULL, e, cb))
- goto error;
-
-#ifdef OPENSSL_FIPS
- if(!fips_check_rsa(rsa))
- goto error;
-#endif
-
- ok = 1;
-
- error:
- if (ctx)
- {
- BN_CTX_end(ctx);
- BN_CTX_free(ctx);
- }
-
- if (ok)
- return 1;
-
- return 0;
-
- }
-
+int RSA_X931_derive_ex(RSA *rsa, BIGNUM *p1, BIGNUM *p2, BIGNUM *q1,
+ BIGNUM *q2, const BIGNUM *Xp1, const BIGNUM *Xp2,
+ const BIGNUM *Xp, const BIGNUM *Xq1, const BIGNUM *Xq2,
+ const BIGNUM *Xq, const BIGNUM *e, BN_GENCB *cb)
+{
+ BIGNUM *r0 = NULL, *r1 = NULL, *r2 = NULL, *r3 = NULL;
+ BN_CTX *ctx = NULL, *ctx2 = NULL;
+ int ret = 0;
+
+ if (!rsa)
+ goto err;
+
+ ctx = BN_CTX_new();
+ if (ctx == NULL)
+ goto err;
+ BN_CTX_start(ctx);
+
+ r0 = BN_CTX_get(ctx);
+ r1 = BN_CTX_get(ctx);
+ r2 = BN_CTX_get(ctx);
+ r3 = BN_CTX_get(ctx);
+
+ if (r3 == NULL)
+ goto err;
+ if (!rsa->e) {
+ rsa->e = BN_dup(e);
+ if (!rsa->e)
+ goto err;
+ } else
+ e = rsa->e;
+
+ /*
+ * If not all parameters present only calculate what we can. This allows
+ * test programs to output selective parameters.
+ */
+
+ if (Xp && rsa->p == NULL) {
+ rsa->p = BN_new();
+ if (rsa->p == NULL)
+ goto err;
+
+ if (!BN_X931_derive_prime_ex(rsa->p, p1, p2,
+ Xp, Xp1, Xp2, e, ctx, cb))
+ goto err;
+ }
+
+ if (Xq && rsa->q == NULL) {
+ rsa->q = BN_new();
+ if (rsa->q == NULL)
+ goto err;
+ if (!BN_X931_derive_prime_ex(rsa->q, q1, q2,
+ Xq, Xq1, Xq2, e, ctx, cb))
+ goto err;
+ }
+
+ if (rsa->p == NULL || rsa->q == NULL) {
+ BN_CTX_end(ctx);
+ BN_CTX_free(ctx);
+ return 2;
+ }
+
+ /*
+ * Since both primes are set we can now calculate all remaining
+ * components.
+ */
+
+ /* 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 */
+ if (!BN_sub(r1, rsa->p, BN_value_one()))
+ goto err; /* p-1 */
+ if (!BN_sub(r2, rsa->q, BN_value_one()))
+ goto err; /* q-1 */
+ if (!BN_mul(r0, r1, r2, ctx))
+ goto err; /* (p-1)(q-1) */
+
+ if (!BN_gcd(r3, r1, r2, ctx))
+ goto err;
+
+ if (!BN_div(r0, NULL, r0, r3, ctx))
+ goto err; /* LCM((p-1)(q-1)) */
+
+ ctx2 = BN_CTX_new();
+ if (ctx2 == NULL)
+ goto err;
+
+ rsa->d = BN_mod_inverse(NULL, rsa->e, r0, ctx2); /* d */
+ if (rsa->d == NULL)
+ goto err;
+
+ /* calculate d mod (p-1) */
+ rsa->dmp1 = BN_new();
+ if (rsa->dmp1 == NULL)
+ goto err;
+ if (!BN_mod(rsa->dmp1, rsa->d, r1, ctx))
+ goto err;
+
+ /* calculate d mod (q-1) */
+ rsa->dmq1 = BN_new();
+ if (rsa->dmq1 == NULL)
+ goto err;
+ if (!BN_mod(rsa->dmq1, rsa->d, r2, ctx))
+ goto err;
+
+ /* calculate inverse of q mod p */
+ rsa->iqmp = BN_mod_inverse(NULL, rsa->q, rsa->p, ctx2);
+
+ ret = 1;
+ err:
+ if (ctx)
+ BN_CTX_end(ctx);
+ BN_CTX_free(ctx);
+ BN_CTX_free(ctx2);
+
+ return ret;
+
+}
+
+int RSA_X931_generate_key_ex(RSA *rsa, int bits, const BIGNUM *e,
+ BN_GENCB *cb)
+{
+ int ok = 0;
+ BIGNUM *Xp = NULL, *Xq = NULL;
+ BN_CTX *ctx = NULL;
+
+ ctx = BN_CTX_new();
+ if (ctx == NULL)
+ goto error;
+
+ BN_CTX_start(ctx);
+ Xp = BN_CTX_get(ctx);
+ Xq = BN_CTX_get(ctx);
+ if (!BN_X931_generate_Xpq(Xp, Xq, bits, ctx))
+ goto error;
+
+ rsa->p = BN_new();
+ rsa->q = BN_new();
+ if (rsa->p == NULL || rsa->q == NULL)
+ goto error;
+
+ /* Generate two primes from Xp, Xq */
+
+ if (!BN_X931_generate_prime_ex(rsa->p, NULL, NULL, NULL, NULL, Xp,
+ e, ctx, cb))
+ goto error;
+
+ if (!BN_X931_generate_prime_ex(rsa->q, NULL, NULL, NULL, NULL, Xq,
+ e, ctx, cb))
+ goto error;
+
+ /*
+ * Since rsa->p and rsa->q are valid this call will just derive remaining
+ * RSA components.
+ */
+
+ if (!RSA_X931_derive_ex(rsa, NULL, NULL, NULL, NULL,
+ NULL, NULL, NULL, NULL, NULL, NULL, e, cb))
+ goto error;
+
+ ok = 1;
+
+ error:
+ if (ctx)
+ BN_CTX_end(ctx);
+ BN_CTX_free(ctx);
+
+ if (ok)
+ return 1;
+
+ return 0;
+
+}
projects / openssl.git / blobdiff