summaryrefslogtreecommitdiff
path: root/openssl/crypto/rsa/rsa_gen.c
diff options
context:
space:
mode:
Diffstat (limited to 'openssl/crypto/rsa/rsa_gen.c')
-rw-r--r--openssl/crypto/rsa/rsa_gen.c219
1 files changed, 0 insertions, 219 deletions
diff --git a/openssl/crypto/rsa/rsa_gen.c b/openssl/crypto/rsa/rsa_gen.c
deleted file mode 100644
index 767f7ab6..00000000
--- a/openssl/crypto/rsa/rsa_gen.c
+++ /dev/null
@@ -1,219 +0,0 @@
-/* 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.]
- */
-
-
-/* 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>
-
-static int rsa_builtin_keygen(RSA *rsa, int bits, BIGNUM *e_value, BN_GENCB *cb);
-
-/* NB: this wrapper would normally be placed in rsa_lib.c and the static
- * implementation would probably be in rsa_eay.c. Nonetheless, is kept here so
- * that we don't introduce a new linker dependency. Eg. any application that
- * wasn't previously linking object code related to key-generation won't have to
- * now just because key-generation is part of RSA_METHOD. */
-int RSA_generate_key_ex(RSA *rsa, int bits, BIGNUM *e_value, BN_GENCB *cb)
- {
- if(rsa->meth->rsa_keygen)
- return rsa->meth->rsa_keygen(rsa, bits, e_value, cb);
- return rsa_builtin_keygen(rsa, bits, e_value, cb);
- }
-
-static int rsa_builtin_keygen(RSA *rsa, int bits, BIGNUM *e_value, BN_GENCB *cb)
- {
- BIGNUM *r0=NULL,*r1=NULL,*r2=NULL,*r3=NULL,*tmp;
- BIGNUM local_r0,local_d,local_p;
- BIGNUM *pr0,*d,*p;
- int bitsp,bitsq,ok= -1,n=0;
- BN_CTX *ctx=NULL;
-
- 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;
-
- bitsp=(bits+1)/2;
- bitsq=bits-bitsp;
-
- /* 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;
-
- BN_copy(rsa->e, e_value);
-
- /* generate p and q */
- for (;;)
- {
- 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(!BN_GENCB_call(cb, 2, n++))
- goto err;
- }
- if(!BN_GENCB_call(cb, 3, 0))
- goto err;
- for (;;)
- {
- /* When generating ridiculously small keys, we can get stuck
- * continually regenerating the same prime values. Check for
- * this and bail if it happens 3 times. */
- unsigned int degenerate = 0;
- do
- {
- if(!BN_generate_prime_ex(rsa->q, bitsq, 0, NULL, NULL, cb))
- goto err;
- } while((BN_cmp(rsa->p, rsa->q) == 0) && (++degenerate < 3));
- if(degenerate == 3)
- {
- ok = 0; /* we set our own err */
- RSAerr(RSA_F_RSA_BUILTIN_KEYGEN,RSA_R_KEY_SIZE_TOO_SMALL);
- 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))
- break;
- if(!BN_GENCB_call(cb, 2, n++))
- goto err;
- }
- if(!BN_GENCB_call(cb, 3, 1))
- goto err;
- if (BN_cmp(rsa->p,rsa->q) < 0)
- {
- tmp=rsa->p;
- rsa->p=rsa->q;
- rsa->q=tmp;
- }
-
- /* calculate n */
- 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 (!(rsa->flags & RSA_FLAG_NO_CONSTTIME))
- {
- pr0 = &local_r0;
- BN_with_flags(pr0, r0, BN_FLG_CONSTTIME);
- }
- else
- pr0 = r0;
- if (!BN_mod_inverse(rsa->d,rsa->e,pr0,ctx)) goto err; /* d */
-
- /* set up d for correct BN_FLG_CONSTTIME flag */
- if (!(rsa->flags & RSA_FLAG_NO_CONSTTIME))
- {
- d = &local_d;
- BN_with_flags(d, rsa->d, BN_FLG_CONSTTIME);
- }
- else
- d = rsa->d;
-
- /* calculate d mod (p-1) */
- if (!BN_mod(rsa->dmp1,d,r1,ctx)) goto err;
-
- /* calculate d mod (q-1) */
- if (!BN_mod(rsa->dmq1,d,r2,ctx)) goto err;
-
- /* calculate inverse of q mod p */
- if (!(rsa->flags & RSA_FLAG_NO_CONSTTIME))
- {
- p = &local_p;
- BN_with_flags(p, rsa->p, BN_FLG_CONSTTIME);
- }
- else
- p = rsa->p;
- if (!BN_mod_inverse(rsa->iqmp,rsa->q,p,ctx)) goto err;
-
- ok=1;
-err:
- if (ok == -1)
- {
- RSAerr(RSA_F_RSA_BUILTIN_KEYGEN,ERR_LIB_BN);
- ok=0;
- }
- if (ctx != NULL)
- {
- BN_CTX_end(ctx);
- BN_CTX_free(ctx);
- }
-
- return ok;
- }
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 19:31:15 +0000