Upgrade chrome's OpenSSL to same version Android ships with.

openssl/fips/dsa/fips_dsa_ossl.c

Index: openssl/fips/dsa/fips_dsa_ossl.c
===================================================================
--- openssl/fips/dsa/fips_dsa_ossl.c	(revision 105093)
+++ openssl/fips/dsa/fips_dsa_ossl.c	(working copy)
@@ -1,435 +0,0 @@
-/* crypto/dsa/dsa_ossl.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.]
- */
-
-/* Original version from Steven Schoch <schoch@sheba.arc.nasa.gov> */
-
-#include <stdio.h>
-#include <openssl/bn.h>
-#include <openssl/dsa.h>
-#include <openssl/rand.h>
-#include <openssl/asn1.h>
-#include <openssl/err.h>
-#ifndef OPENSSL_NO_ENGINE
-#include <openssl/engine.h>
-#endif
-#include <openssl/fips.h>
-
-#ifdef OPENSSL_FIPS
-
-static DSA_SIG *dsa_do_sign(const unsigned char *dgst, FIPS_DSA_SIZE_T dlen, DSA *dsa);
-static int dsa_sign_setup(DSA *dsa, BN_CTX *ctx_in, BIGNUM **kinvp, BIGNUM **rp);
-static int dsa_do_verify(const unsigned char *dgst, FIPS_DSA_SIZE_T dgst_len, DSA_SIG *sig,
-		  DSA *dsa);
-static int dsa_init(DSA *dsa);
-static int dsa_finish(DSA *dsa);
-static int dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1, BIGNUM *p1,
-		BIGNUM *a2, BIGNUM *p2, BIGNUM *m, BN_CTX *ctx,
-		BN_MONT_CTX *in_mont);
-static int dsa_bn_mod_exp(DSA *dsa, BIGNUM *r, BIGNUM *a, const BIGNUM *p,
-				const BIGNUM *m, BN_CTX *ctx,
-				BN_MONT_CTX *m_ctx);
-
-static const DSA_METHOD openssl_dsa_meth = {
-"OpenSSL FIPS DSA method",
-dsa_do_sign,
-dsa_sign_setup,
-dsa_do_verify,
-dsa_mod_exp,
-dsa_bn_mod_exp,
-dsa_init,
-dsa_finish,
-DSA_FLAG_FIPS_METHOD,
-NULL
-};
-#if 0
-int FIPS_dsa_check(struct dsa_st *dsa)
-    {
-    if(dsa->meth != &openssl_dsa_meth || dsa->meth->dsa_do_sign != dsa_do_sign
-       || dsa->meth->dsa_sign_setup != dsa_sign_setup
-       || dsa->meth->dsa_mod_exp != dsa_mod_exp
-       || dsa->meth->bn_mod_exp != dsa_bn_mod_exp
-       || dsa->meth->init != dsa_init
-       || dsa->meth->finish != dsa_finish)
-	{
-	FIPSerr(FIPS_F_FIPS_DSA_CHECK,FIPS_R_NON_FIPS_METHOD);
-	return 0;
-	}
-    return 1;
-    }
-#endif
-
-const DSA_METHOD *DSA_OpenSSL(void)
-{
-	return &openssl_dsa_meth;
-}
-
-static DSA_SIG *dsa_do_sign(const unsigned char *dgst, FIPS_DSA_SIZE_T dlen, DSA *dsa)
-	{
-	BIGNUM *kinv=NULL,*r=NULL,*s=NULL;
-	BIGNUM m;
-	BIGNUM xr;
-	BN_CTX *ctx=NULL;
-	int i,reason=ERR_R_BN_LIB;
-	DSA_SIG *ret=NULL;
-
-	if(FIPS_selftest_failed())
-	    {
-	    FIPSerr(FIPS_F_DSA_DO_SIGN,FIPS_R_FIPS_SELFTEST_FAILED);
-	    return NULL;
-	    }
-
-	if (FIPS_mode() && (BN_num_bits(dsa->p) < OPENSSL_DSA_FIPS_MIN_MODULUS_BITS))
-		{
-		DSAerr(DSA_F_DSA_DO_SIGN, DSA_R_KEY_SIZE_TOO_SMALL);
-		return NULL;
-		}
-
-	BN_init(&m);
-	BN_init(&xr);
-
-	if (!dsa->p || !dsa->q || !dsa->g)
-		{
-		reason=DSA_R_MISSING_PARAMETERS;
-		goto err;
-		}
-
-	s=BN_new();
-	if (s == NULL) goto err;
-
-	i=BN_num_bytes(dsa->q); /* should be 20 */
-	if ((dlen > i) || (dlen > 50))
-		{
-		reason=DSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE;
-		goto err;
-		}
-
-	ctx=BN_CTX_new();
-	if (ctx == NULL) goto err;
-
-	if (!dsa->meth->dsa_sign_setup(dsa,ctx,&kinv,&r)) goto err;
-
-	if (BN_bin2bn(dgst,dlen,&m) == NULL) goto err;
-
-	/* Compute  s = inv(k) (m + xr) mod q */
-	if (!BN_mod_mul(&xr,dsa->priv_key,r,dsa->q,ctx)) goto err;/* s = xr */
-	if (!BN_add(s, &xr, &m)) goto err;		/* s = m + xr */
-	if (BN_cmp(s,dsa->q) > 0)
-		BN_sub(s,s,dsa->q);
-	if (!BN_mod_mul(s,s,kinv,dsa->q,ctx)) goto err;
-
-	ret= DSA_SIG_new();
-	if (ret == NULL) goto err;
-	ret->r = r;
-	ret->s = s;
-	
-err:
-	if (!ret)
-		{
-		DSAerr(DSA_F_DSA_DO_SIGN,reason);
-		BN_free(r);
-		BN_free(s);
-		}
-	if (ctx != NULL) BN_CTX_free(ctx);
-	BN_clear_free(&m);
-	BN_clear_free(&xr);
-	if (kinv != NULL) /* dsa->kinv is NULL now if we used it */
-	    BN_clear_free(kinv);
-	return(ret);
-	}
-
-static int dsa_sign_setup(DSA *dsa, BN_CTX *ctx_in, BIGNUM **kinvp, BIGNUM **rp)
-	{
-	BN_CTX *ctx;
-	BIGNUM k,kq,*K,*kinv=NULL,*r=NULL;
-	int ret=0;
-
-	if (!dsa->p || !dsa->q || !dsa->g)
-		{
-		DSAerr(DSA_F_DSA_SIGN_SETUP,DSA_R_MISSING_PARAMETERS);
-		return 0;
-		}
-
-	BN_init(&k);
-	BN_init(&kq);
-
-	if (ctx_in == NULL)
-		{
-		if ((ctx=BN_CTX_new()) == NULL) goto err;
-		}
-	else
-		ctx=ctx_in;
-
-	if ((r=BN_new()) == NULL) goto err;
-
-	/* Get random k */
-	do
-		if (!BN_rand_range(&k, dsa->q)) goto err;
-	while (BN_is_zero(&k));
-	if ((dsa->flags & DSA_FLAG_NO_EXP_CONSTTIME) == 0)
-		{
-		BN_set_flags(&k, BN_FLG_CONSTTIME);
-		}
-
-	if (dsa->flags & DSA_FLAG_CACHE_MONT_P)
-		{
-		if (!BN_MONT_CTX_set_locked((BN_MONT_CTX **)&dsa->method_mont_p,
-						CRYPTO_LOCK_DSA,
-						dsa->p, ctx))
-			goto err;
-		}
-
-	/* Compute r = (g^k mod p) mod q */
-
-	if ((dsa->flags & DSA_FLAG_NO_EXP_CONSTTIME) == 0)
-		{
-		if (!BN_copy(&kq, &k)) goto err;
-
-		/* We do not want timing information to leak the length of k,
-		 * so we compute g^k using an equivalent exponent of fixed length.
-		 *
-		 * (This is a kludge that we need because the BN_mod_exp_mont()
-		 * does not let us specify the desired timing behaviour.) */
-
-		if (!BN_add(&kq, &kq, dsa->q)) goto err;
-		if (BN_num_bits(&kq) <= BN_num_bits(dsa->q))
-			{
-			if (!BN_add(&kq, &kq, dsa->q)) goto err;
-			}
-
-		K = &kq;
-		}
-	else
-		{
-		K = &k;
-		}
-	if (!dsa->meth->bn_mod_exp(dsa, r,dsa->g,K,dsa->p,ctx,
-		(BN_MONT_CTX *)dsa->method_mont_p)) goto err;
-	if (!BN_mod(r,r,dsa->q,ctx)) goto err;
-
-	/* Compute  part of 's = inv(k) (m + xr) mod q' */
-	if ((kinv=BN_mod_inverse(NULL,&k,dsa->q,ctx)) == NULL) goto err;
-
-	if (*kinvp != NULL) BN_clear_free(*kinvp);
-	*kinvp=kinv;
-	kinv=NULL;
-	if (*rp != NULL) BN_clear_free(*rp);
-	*rp=r;
-	ret=1;
-err:
-	if (!ret)
-		{
-		DSAerr(DSA_F_DSA_SIGN_SETUP,ERR_R_BN_LIB);
-		if (kinv != NULL) BN_clear_free(kinv);
-		if (r != NULL) BN_clear_free(r);
-		}
-	if (ctx_in == NULL) BN_CTX_free(ctx);
-	if (kinv != NULL) BN_clear_free(kinv);
-	BN_clear_free(&k);
-	BN_clear_free(&kq);
-	return(ret);
-	}
-
-static int dsa_do_verify(const unsigned char *dgst, FIPS_DSA_SIZE_T dgst_len, DSA_SIG *sig,
-		  DSA *dsa)
-	{
-	BN_CTX *ctx;
-	BIGNUM u1,u2,t1;
-	BN_MONT_CTX *mont=NULL;
-	int ret = -1;
-
-	if (!dsa->p || !dsa->q || !dsa->g)
-		{
-		DSAerr(DSA_F_DSA_DO_VERIFY,DSA_R_MISSING_PARAMETERS);
-		return -1;
-		}
-
-	if(FIPS_selftest_failed())
-	    {
-	    FIPSerr(FIPS_F_DSA_DO_VERIFY,FIPS_R_FIPS_SELFTEST_FAILED);
-	    return -1;
-	    }
-
-	if (BN_num_bits(dsa->q) != 160)
-		{
-		DSAerr(DSA_F_DSA_DO_VERIFY,DSA_R_BAD_Q_VALUE);
-		return -1;
-		}
-
-	if (BN_num_bits(dsa->p) > OPENSSL_DSA_MAX_MODULUS_BITS)
-		{
-		DSAerr(DSA_F_DSA_DO_VERIFY,DSA_R_MODULUS_TOO_LARGE);
-		return -1;
-		}
-
-	if (FIPS_mode() && (BN_num_bits(dsa->p) < OPENSSL_DSA_FIPS_MIN_MODULUS_BITS))
-		{
-		DSAerr(DSA_F_DSA_DO_VERIFY, DSA_R_KEY_SIZE_TOO_SMALL);
-		return -1;
-		}
-
-	BN_init(&u1);
-	BN_init(&u2);
-	BN_init(&t1);
-
-	if ((ctx=BN_CTX_new()) == NULL) goto err;
-
-	if (BN_is_zero(sig->r) || sig->r->neg || BN_ucmp(sig->r, dsa->q) >= 0)
-		{
-		ret = 0;
-		goto err;
-		}
-	if (BN_is_zero(sig->s) || sig->s->neg || BN_ucmp(sig->s, dsa->q) >= 0)
-		{
-		ret = 0;
-		goto err;
-		}
-
-	/* Calculate W = inv(S) mod Q
-	 * save W in u2 */
-	if ((BN_mod_inverse(&u2,sig->s,dsa->q,ctx)) == NULL) goto err;
-
-	/* save M in u1 */
-	if (BN_bin2bn(dgst,dgst_len,&u1) == NULL) goto err;
-
-	/* u1 = M * w mod q */
-	if (!BN_mod_mul(&u1,&u1,&u2,dsa->q,ctx)) goto err;
-
-	/* u2 = r * w mod q */
-	if (!BN_mod_mul(&u2,sig->r,&u2,dsa->q,ctx)) goto err;
-
-
-	if (dsa->flags & DSA_FLAG_CACHE_MONT_P)
-		{
-		mont = BN_MONT_CTX_set_locked(
-					(BN_MONT_CTX **)&dsa->method_mont_p,
-					CRYPTO_LOCK_DSA, dsa->p, ctx);
-		if (!mont)
-			goto err;
-		}
-
-#if 0
-	{
-	BIGNUM t2;
-
-	BN_init(&t2);
-	/* v = ( g^u1 * y^u2 mod p ) mod q */
-	/* let t1 = g ^ u1 mod p */
-	if (!BN_mod_exp_mont(&t1,dsa->g,&u1,dsa->p,ctx,mont)) goto err;
-	/* let t2 = y ^ u2 mod p */
-	if (!BN_mod_exp_mont(&t2,dsa->pub_key,&u2,dsa->p,ctx,mont)) goto err;
-	/* let u1 = t1 * t2 mod p */
-	if (!BN_mod_mul(&u1,&t1,&t2,dsa->p,ctx)) goto err_bn;
-	BN_free(&t2);
-	}
-	/* let u1 = u1 mod q */
-	if (!BN_mod(&u1,&u1,dsa->q,ctx)) goto err;
-#else
-	{
-	if (!dsa->meth->dsa_mod_exp(dsa, &t1,dsa->g,&u1,dsa->pub_key,&u2,
-						dsa->p,ctx,mont)) goto err;
-	/* BN_copy(&u1,&t1); */
-	/* let u1 = u1 mod q */
-	if (!BN_mod(&u1,&t1,dsa->q,ctx)) goto err;
-	}
-#endif
-	/* V is now in u1.  If the signature is correct, it will be
-	 * equal to R. */
-	ret=(BN_ucmp(&u1, sig->r) == 0);
-
-	err:
-	if (ret != 1) DSAerr(DSA_F_DSA_DO_VERIFY,ERR_R_BN_LIB);
-	if (ctx != NULL) BN_CTX_free(ctx);
-	BN_free(&u1);
-	BN_free(&u2);
-	BN_free(&t1);
-	return(ret);
-	}
-
-static int dsa_init(DSA *dsa)
-{
-	FIPS_selftest_check();
-	dsa->flags|=DSA_FLAG_CACHE_MONT_P;
-	return(1);
-}
-
-static int dsa_finish(DSA *dsa)
-{
-	if(dsa->method_mont_p)
-		BN_MONT_CTX_free((BN_MONT_CTX *)dsa->method_mont_p);
-	return(1);
-}
-
-static int dsa_mod_exp(DSA *dsa, BIGNUM *rr, BIGNUM *a1, BIGNUM *p1,
-		BIGNUM *a2, BIGNUM *p2, BIGNUM *m, BN_CTX *ctx,
-		BN_MONT_CTX *in_mont)
-{
-	return BN_mod_exp2_mont(rr, a1, p1, a2, p2, m, ctx, in_mont);
-}
-	
-static int dsa_bn_mod_exp(DSA *dsa, BIGNUM *r, BIGNUM *a, const BIGNUM *p,
-				const BIGNUM *m, BN_CTX *ctx,
-				BN_MONT_CTX *m_ctx)
-{
-	return BN_mod_exp_mont(r, a, p, m, ctx, m_ctx);
-}
-
-#else /* ndef OPENSSL_FIPS */
-
-static void *dummy=&dummy;
-
-#endif /* ndef OPENSSL_FIPS */