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authormarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
committermarha <marha@users.sourceforge.net>2009-06-28 22:07:26 +0000
commit3562e78743202e43aec8727005182a2558117eca (patch)
tree8f9113a77d12470c5c851a2a8e4cb02e89df7d43 /openssl/crypto/rsa/rsa_x931g.c
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Diffstat (limited to 'openssl/crypto/rsa/rsa_x931g.c')
-rw-r--r--openssl/crypto/rsa/rsa_x931g.c255
1 files changed, 255 insertions, 0 deletions
diff --git a/openssl/crypto/rsa/rsa_x931g.c b/openssl/crypto/rsa/rsa_x931g.c
new file mode 100644
index 000000000..bf94f8be7
--- /dev/null
+++ b/openssl/crypto/rsa/rsa_x931g.c
@@ -0,0 +1,255 @@
+/* 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:
+ * 1. Redistributions of source code must retain the copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * "This product includes cryptographic software written by
+ * 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
+ * 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
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * 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.]
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+#include <openssl/err.h>
+#include <openssl/bn.h>
+#include <openssl/rsa.h>
+
+#ifndef OPENSSL_FIPS
+
+/* 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();
+ if (!ctx)
+ 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)
+ {
+ 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 && 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;
+
+ 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;
+
+ ok = 1;
+
+ error:
+ if (ctx)
+ {
+ BN_CTX_end(ctx);
+ BN_CTX_free(ctx);
+ }
+
+ if (ok)
+ return 1;
+
+ return 0;
+
+ }
+
+#endif