Delete bundled copy of OpenSSL and replace with README.

openssl/crypto/dsa/dsa_gen.c

Index: openssl/crypto/dsa/dsa_gen.c
diff --git a/openssl/crypto/dsa/dsa_gen.c b/openssl/crypto/dsa/dsa_gen.c
deleted file mode 100644
index c398761d0ddd9379b6c6d3c79276ce7c36b671cb..0000000000000000000000000000000000000000
--- a/openssl/crypto/dsa/dsa_gen.c
+++ /dev/null
@@ -1,371 +0,0 @@
-/* crypto/dsa/dsa_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.]
- */
-
-#undef GENUINE_DSA
-
-#ifdef GENUINE_DSA
-/* Parameter generation follows the original release of FIPS PUB 186,
- * Appendix 2.2 (i.e. use SHA as defined in FIPS PUB 180) */
-#define HASH    EVP_sha()
-#else
-/* Parameter generation follows the updated Appendix 2.2 for FIPS PUB 186,
- * also Appendix 2.2 of FIPS PUB 186-1 (i.e. use SHA as defined in
- * FIPS PUB 180-1) */
-#define HASH    EVP_sha1()
-#endif 
-
-#include <openssl/opensslconf.h> /* To see if OPENSSL_NO_SHA is defined */
-
-#ifndef OPENSSL_NO_SHA
-
-#include <stdio.h>
-#include "cryptlib.h"
-#include <openssl/evp.h>
-#include <openssl/bn.h>
-#include <openssl/rand.h>
-#include <openssl/sha.h>
-#include "dsa_locl.h"
-
-#ifdef OPENSSL_FIPS
-#include <openssl/fips.h>
-#endif
-
-int DSA_generate_parameters_ex(DSA *ret, int bits,
-		const unsigned char *seed_in, int seed_len,
-		int *counter_ret, unsigned long *h_ret, BN_GENCB *cb)
-	{
-#ifdef OPENSSL_FIPS
-	if (FIPS_mode() && !(ret->meth->flags & DSA_FLAG_FIPS_METHOD)
-			&& !(ret->flags & DSA_FLAG_NON_FIPS_ALLOW))
-		{
-		DSAerr(DSA_F_DSA_GENERATE_PARAMETERS_EX, DSA_R_NON_FIPS_DSA_METHOD);
-		return 0;
-		}
-#endif
-	if(ret->meth->dsa_paramgen)
-		return ret->meth->dsa_paramgen(ret, bits, seed_in, seed_len,
-				counter_ret, h_ret, cb);
-#ifdef OPENSSL_FIPS
-	else if (FIPS_mode())
-		{
-		return FIPS_dsa_generate_parameters_ex(ret, bits, 
-							seed_in, seed_len,
-							counter_ret, h_ret, cb);
-		}
-#endif
-	else
-		{
-		const EVP_MD *evpmd;
-		size_t qbits = bits >= 2048 ? 256 : 160;
-
-		if (bits >= 2048)
-			{
-			qbits = 256;
-			evpmd = EVP_sha256();
-			}
-		else
-			{
-			qbits = 160;
-			evpmd = EVP_sha1();
-			}
-
-		return dsa_builtin_paramgen(ret, bits, qbits, evpmd,
-			seed_in, seed_len, NULL, counter_ret, h_ret, cb);
-		}
-	}
-
-int dsa_builtin_paramgen(DSA *ret, size_t bits, size_t qbits,
-	const EVP_MD *evpmd, const unsigned char *seed_in, size_t seed_len,
-	unsigned char *seed_out,
-	int *counter_ret, unsigned long *h_ret, BN_GENCB *cb)
-	{
-	int ok=0;
-	unsigned char seed[SHA256_DIGEST_LENGTH];
-	unsigned char md[SHA256_DIGEST_LENGTH];
-	unsigned char buf[SHA256_DIGEST_LENGTH],buf2[SHA256_DIGEST_LENGTH];
-	BIGNUM *r0,*W,*X,*c,*test;
-	BIGNUM *g=NULL,*q=NULL,*p=NULL;
-	BN_MONT_CTX *mont=NULL;
-	int i, k, n=0, m=0, qsize = qbits >> 3;
-	int counter=0;
-	int r=0;
-	BN_CTX *ctx=NULL;
-	unsigned int h=2;
-
-	if (qsize != SHA_DIGEST_LENGTH && qsize != SHA224_DIGEST_LENGTH &&
-	    qsize != SHA256_DIGEST_LENGTH)
-		/* invalid q size */
-		return 0;
-
-	if (evpmd == NULL)
-		/* use SHA1 as default */
-		evpmd = EVP_sha1();
-
-	if (bits < 512)
-		bits = 512;
-
-	bits = (bits+63)/64*64;
-
-	/* NB: seed_len == 0 is special case: copy generated seed to
- 	 * seed_in if it is not NULL.
- 	 */
-	if (seed_len && (seed_len < (size_t)qsize))
-		seed_in = NULL;		/* seed buffer too small -- ignore */
-	if (seed_len > (size_t)qsize) 
-		seed_len = qsize;	/* App. 2.2 of FIPS PUB 186 allows larger SEED,
-					 * but our internal buffers are restricted to 160 bits*/
-	if (seed_in != NULL)
-		memcpy(seed, seed_in, seed_len);
-
-	if ((ctx=BN_CTX_new()) == NULL)
-		goto err;
-
-	if ((mont=BN_MONT_CTX_new()) == NULL)
-		goto err;
-
-	BN_CTX_start(ctx);
-	r0 = BN_CTX_get(ctx);
-	g = BN_CTX_get(ctx);
-	W = BN_CTX_get(ctx);
-	q = BN_CTX_get(ctx);
-	X = BN_CTX_get(ctx);
-	c = BN_CTX_get(ctx);
-	p = BN_CTX_get(ctx);
-	test = BN_CTX_get(ctx);
-
-	if (!BN_lshift(test,BN_value_one(),bits-1))
-		goto err;
-
-	for (;;)
-		{
-		for (;;) /* find q */
-			{
-			int seed_is_random;
-
-			/* step 1 */
-			if(!BN_GENCB_call(cb, 0, m++))
-				goto err;
-
-			if (!seed_len)
-				{
-				RAND_pseudo_bytes(seed, qsize);
-				seed_is_random = 1;
-				}
-			else
-				{
-				seed_is_random = 0;
-				seed_len=0; /* use random seed if 'seed_in' turns out to be bad*/
-				}
-			memcpy(buf , seed, qsize);
-			memcpy(buf2, seed, qsize);
-			/* precompute "SEED + 1" for step 7: */
-			for (i = qsize-1; i >= 0; i--)
-				{
-				buf[i]++;
-				if (buf[i] != 0)
-					break;
-				}
-
-			/* step 2 */
-			if (!EVP_Digest(seed, qsize, md,   NULL, evpmd, NULL))
-				goto err;
-			if (!EVP_Digest(buf,  qsize, buf2, NULL, evpmd, NULL))
-				goto err;
-			for (i = 0; i < qsize; i++)
-				md[i]^=buf2[i];
-
-			/* step 3 */
-			md[0] |= 0x80;
-			md[qsize-1] |= 0x01;
-			if (!BN_bin2bn(md, qsize, q))
-				goto err;
-
-			/* step 4 */
-			r = BN_is_prime_fasttest_ex(q, DSS_prime_checks, ctx,
-					seed_is_random, cb);
-			if (r > 0)
-				break;
-			if (r != 0)
-				goto err;
-
-			/* do a callback call */
-			/* step 5 */
-			}
-
-		if(!BN_GENCB_call(cb, 2, 0)) goto err;
-		if(!BN_GENCB_call(cb, 3, 0)) goto err;
-
-		/* step 6 */
-		counter=0;
-		/* "offset = 2" */
-
-		n=(bits-1)/160;
-
-		for (;;)
-			{
-			if ((counter != 0) && !BN_GENCB_call(cb, 0, counter))
-				goto err;
-
-			/* step 7 */
-			BN_zero(W);
-			/* now 'buf' contains "SEED + offset - 1" */
-			for (k=0; k<=n; k++)
-				{
-				/* obtain "SEED + offset + k" by incrementing: */
-				for (i = qsize-1; i >= 0; i--)
-					{
-					buf[i]++;
-					if (buf[i] != 0)
-						break;
-					}
-
-				if (!EVP_Digest(buf, qsize, md ,NULL, evpmd,
-									NULL))
-					goto err;
-
-				/* step 8 */
-				if (!BN_bin2bn(md, qsize, r0))
-					goto err;
-				if (!BN_lshift(r0,r0,(qsize << 3)*k)) goto err;
-				if (!BN_add(W,W,r0)) goto err;
-				}
-
-			/* more of step 8 */
-			if (!BN_mask_bits(W,bits-1)) goto err;
-			if (!BN_copy(X,W)) goto err;
-			if (!BN_add(X,X,test)) goto err;
-
-			/* step 9 */
-			if (!BN_lshift1(r0,q)) goto err;
-			if (!BN_mod(c,X,r0,ctx)) goto err;
-			if (!BN_sub(r0,c,BN_value_one())) goto err;
-			if (!BN_sub(p,X,r0)) goto err;
-
-			/* step 10 */
-			if (BN_cmp(p,test) >= 0)
-				{
-				/* step 11 */
-				r = BN_is_prime_fasttest_ex(p, DSS_prime_checks,
-						ctx, 1, cb);
-				if (r > 0)
-						goto end; /* found it */
-				if (r != 0)
-					goto err;
-				}
-
-			/* step 13 */
-			counter++;
-			/* "offset = offset + n + 1" */
-
-			/* step 14 */
-			if (counter >= 4096) break;
-			}
-		}
-end:
-	if(!BN_GENCB_call(cb, 2, 1))
-		goto err;
-
-	/* We now need to generate g */
-	/* Set r0=(p-1)/q */
-	if (!BN_sub(test,p,BN_value_one())) goto err;
-	if (!BN_div(r0,NULL,test,q,ctx)) goto err;
-
-	if (!BN_set_word(test,h)) goto err;
-	if (!BN_MONT_CTX_set(mont,p,ctx)) goto err;
-
-	for (;;)
-		{
-		/* g=test^r0%p */
-		if (!BN_mod_exp_mont(g,test,r0,p,ctx,mont)) goto err;
-		if (!BN_is_one(g)) break;
-		if (!BN_add(test,test,BN_value_one())) goto err;
-		h++;
-		}
-
-	if(!BN_GENCB_call(cb, 3, 1))
-		goto err;
-
-	ok=1;
-err:
-	if (ok)
-		{
-		if(ret->p) BN_free(ret->p);
-		if(ret->q) BN_free(ret->q);
-		if(ret->g) BN_free(ret->g);
-		ret->p=BN_dup(p);
-		ret->q=BN_dup(q);
-		ret->g=BN_dup(g);
-		if (ret->p == NULL || ret->q == NULL || ret->g == NULL)
-			{
-			ok=0;
-			goto err;
-			}
-		if (counter_ret != NULL) *counter_ret=counter;
-		if (h_ret != NULL) *h_ret=h;
-		if (seed_out)
-			memcpy(seed_out, seed, qsize);
-		}
-	if(ctx)
-		{
-		BN_CTX_end(ctx);
-		BN_CTX_free(ctx);
-		}
-	if (mont != NULL) BN_MONT_CTX_free(mont);
-	return ok;
-	}
-#endif