Delete bundled copy of OpenSSL and replace with README.

openssl/crypto/srp/srp_lib.c

Index: openssl/crypto/srp/srp_lib.c
diff --git a/openssl/crypto/srp/srp_lib.c b/openssl/crypto/srp/srp_lib.c
deleted file mode 100644
index 92cea98dcd6a70d83ca8e779531483c83b2b5903..0000000000000000000000000000000000000000
--- a/openssl/crypto/srp/srp_lib.c
+++ /dev/null
@@ -1,357 +0,0 @@
-/* crypto/srp/srp_lib.c */
-/* Written by Christophe Renou (christophe.renou@edelweb.fr) with 
- * the precious help of Peter Sylvester (peter.sylvester@edelweb.fr) 
- * for the EdelKey project and contributed to the OpenSSL project 2004.
- */
-/* ====================================================================
- * Copyright (c) 2004 The OpenSSL Project.  All rights reserved.
- *
- * 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 above 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 acknowledgment:
- *    "This product includes software developed by the OpenSSL Project
- *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- *    endorse or promote products derived from this software without
- *    prior written permission. For written permission, please contact
- *    licensing@OpenSSL.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- *    nor may "OpenSSL" appear in their names without prior written
- *    permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- *    acknowledgment:
- *    "This product includes software developed by the OpenSSL Project
- *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED 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 OpenSSL PROJECT OR
- * ITS 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.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com).  This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
- *
- */
-#ifndef OPENSSL_NO_SRP
-#include "cryptlib.h"
-#include "srp_lcl.h"
-#include <openssl/srp.h>
-#include <openssl/evp.h>
-
-#if (BN_BYTES == 8)
-#define bn_pack4(a1,a2,a3,a4) 0x##a1##a2##a3##a4##ul
-#endif
-#if (BN_BYTES == 4)
-#define bn_pack4(a1,a2,a3,a4)  0x##a3##a4##ul, 0x##a1##a2##ul
-#endif
-#if (BN_BYTES == 2)
-#define bn_pack4(a1,a2,a3,a4) 0x##a4##u,0x##a3##u,0x##a2##u,0x##a1##u
-#endif
-
-
-#include "srp_grps.h"
-
-static BIGNUM *srp_Calc_k(BIGNUM *N, BIGNUM *g)
-	{
-	/* k = SHA1(N | PAD(g)) -- tls-srp draft 8 */
-
-	unsigned char digest[SHA_DIGEST_LENGTH];
-	unsigned char *tmp;
-	EVP_MD_CTX ctxt;
-	int longg ;
-	int longN = BN_num_bytes(N);
-
-	if ((tmp = OPENSSL_malloc(longN)) == NULL)
-		return NULL;
-	BN_bn2bin(N,tmp) ;
-
-	EVP_MD_CTX_init(&ctxt);
-	EVP_DigestInit_ex(&ctxt, EVP_sha1(), NULL);
-	EVP_DigestUpdate(&ctxt, tmp, longN);
-
-	memset(tmp, 0, longN);
-	longg = BN_bn2bin(g,tmp) ;
-        /* use the zeros behind to pad on left */
-	EVP_DigestUpdate(&ctxt, tmp + longg, longN-longg);
-	EVP_DigestUpdate(&ctxt, tmp, longg);
-	OPENSSL_free(tmp);
-
-	EVP_DigestFinal_ex(&ctxt, digest, NULL);
-	EVP_MD_CTX_cleanup(&ctxt);
-	return BN_bin2bn(digest, sizeof(digest), NULL);	
-	}
-
-BIGNUM *SRP_Calc_u(BIGNUM *A, BIGNUM *B, BIGNUM *N)
-	{
-	/* k = SHA1(PAD(A) || PAD(B) ) -- tls-srp draft 8 */
-
-	BIGNUM *u;	
-	unsigned char cu[SHA_DIGEST_LENGTH];
-	unsigned char *cAB;
-	EVP_MD_CTX ctxt;
-	int longN;  
-	if ((A == NULL) ||(B == NULL) || (N == NULL))
-		return NULL;
-
-	longN= BN_num_bytes(N);
-
-	if ((cAB = OPENSSL_malloc(2*longN)) == NULL) 
-		return NULL;
-
-	memset(cAB, 0, longN);
-
-	EVP_MD_CTX_init(&ctxt);
-	EVP_DigestInit_ex(&ctxt, EVP_sha1(), NULL);
-	EVP_DigestUpdate(&ctxt, cAB + BN_bn2bin(A,cAB+longN), longN);
-	EVP_DigestUpdate(&ctxt, cAB + BN_bn2bin(B,cAB+longN), longN);
-	OPENSSL_free(cAB);
-	EVP_DigestFinal_ex(&ctxt, cu, NULL);
-	EVP_MD_CTX_cleanup(&ctxt);
-
-	if (!(u = BN_bin2bn(cu, sizeof(cu), NULL)))
-		return NULL;
-	if (!BN_is_zero(u))
-		return u;
-	BN_free(u);
-	return NULL;
-}
-
-BIGNUM *SRP_Calc_server_key(BIGNUM *A, BIGNUM *v, BIGNUM *u, BIGNUM *b, BIGNUM *N)
-	{
-	BIGNUM *tmp = NULL, *S = NULL;
-	BN_CTX *bn_ctx; 
-	
-	if (u == NULL || A == NULL || v == NULL || b == NULL || N == NULL)
-		return NULL; 
-
-	if ((bn_ctx = BN_CTX_new()) == NULL ||
-		(tmp = BN_new()) == NULL ||
-		(S = BN_new()) == NULL )
-		goto err;
-
-	/* S = (A*v**u) ** b */ 
-
-	if (!BN_mod_exp(tmp,v,u,N,bn_ctx))
-		goto err;
-	if (!BN_mod_mul(tmp,A,tmp,N,bn_ctx))
-		goto err;
-	if (!BN_mod_exp(S,tmp,b,N,bn_ctx))
-		goto err;
-err:
-	BN_CTX_free(bn_ctx);
-	BN_clear_free(tmp);
-	return S;
-	}
-
-BIGNUM *SRP_Calc_B(BIGNUM *b, BIGNUM *N, BIGNUM *g, BIGNUM *v)
-	{
-	BIGNUM  *kv = NULL, *gb = NULL;
-	BIGNUM *B = NULL, *k = NULL;
-	BN_CTX *bn_ctx;
-
-	if (b == NULL || N == NULL || g == NULL || v == NULL ||
-		(bn_ctx = BN_CTX_new()) == NULL)
-		return NULL; 
-
-	if ( (kv = BN_new()) == NULL ||
-		(gb = BN_new()) == NULL ||
-		(B = BN_new())== NULL)
-		goto err;
-
-	/* B = g**b + k*v */
-
-	if (!BN_mod_exp(gb,g,b,N,bn_ctx) ||
-	   !(k = srp_Calc_k(N,g)) ||
-	   !BN_mod_mul(kv,v,k,N,bn_ctx) || 
-	   !BN_mod_add(B,gb,kv,N,bn_ctx))
-		{
-		BN_free(B);
-		B = NULL;
-		}
-err:
-	BN_CTX_free(bn_ctx);
-	BN_clear_free(kv);
-	BN_clear_free(gb);
-	BN_free(k); 
-	return B;
-	}
-
-BIGNUM *SRP_Calc_x(BIGNUM *s, const char *user, const char *pass)
-	{
-	unsigned char dig[SHA_DIGEST_LENGTH];
-	EVP_MD_CTX ctxt;
-	unsigned char *cs;
-
-	if ((s == NULL) ||
-		(user == NULL) ||
-		(pass == NULL))
-		return NULL;
-
-	if ((cs = OPENSSL_malloc(BN_num_bytes(s))) == NULL)
-		return NULL;
-
-	EVP_MD_CTX_init(&ctxt);
-	EVP_DigestInit_ex(&ctxt, EVP_sha1(), NULL);
-	EVP_DigestUpdate(&ctxt, user, strlen(user));
-	EVP_DigestUpdate(&ctxt, ":", 1);
-	EVP_DigestUpdate(&ctxt, pass, strlen(pass));
-	EVP_DigestFinal_ex(&ctxt, dig, NULL);
-
-	EVP_DigestInit_ex(&ctxt, EVP_sha1(), NULL);
-	BN_bn2bin(s,cs);
-	EVP_DigestUpdate(&ctxt, cs, BN_num_bytes(s));
-	OPENSSL_free(cs);
-	EVP_DigestUpdate(&ctxt, dig, sizeof(dig));
-	EVP_DigestFinal_ex(&ctxt, dig, NULL);
-	EVP_MD_CTX_cleanup(&ctxt);
-
-	return BN_bin2bn(dig, sizeof(dig), NULL);
-	}
-
-BIGNUM *SRP_Calc_A(BIGNUM *a, BIGNUM *N, BIGNUM *g)
-	{
-	BN_CTX *bn_ctx; 
-	BIGNUM * A = NULL;
-
-	if (a == NULL || N == NULL || g == NULL ||
-		(bn_ctx = BN_CTX_new()) == NULL) 
-		return NULL;
-
-	if ((A = BN_new()) != NULL &&
-	   !BN_mod_exp(A,g,a,N,bn_ctx))
-		{
-		BN_free(A);
-		A = NULL;
-		}
-	BN_CTX_free(bn_ctx);
-	return A;
-	}
-
-
-BIGNUM *SRP_Calc_client_key(BIGNUM *N, BIGNUM *B, BIGNUM *g, BIGNUM *x, BIGNUM *a, BIGNUM *u)
-	{
-	BIGNUM *tmp = NULL, *tmp2 = NULL, *tmp3 = NULL , *k = NULL, *K = NULL;
-	BN_CTX *bn_ctx;
-
-	if (u == NULL || B == NULL || N == NULL || g == NULL || x == NULL || a == NULL ||
-		(bn_ctx = BN_CTX_new()) == NULL)
-		return NULL; 
-
-	if ((tmp = BN_new()) == NULL ||
-		(tmp2 = BN_new())== NULL ||
-		(tmp3 = BN_new())== NULL ||
-		(K = BN_new()) == NULL)
-		goto err;
-	
-	if (!BN_mod_exp(tmp,g,x,N,bn_ctx))
-		goto err;
-	if (!(k = srp_Calc_k(N,g)))
-		goto err;
-	if (!BN_mod_mul(tmp2,tmp,k,N,bn_ctx))
-		goto err;
-	if (!BN_mod_sub(tmp,B,tmp2,N,bn_ctx))
-		goto err;
-
-	if (!BN_mod_mul(tmp3,u,x,N,bn_ctx))
-		goto err;
-	if (!BN_mod_add(tmp2,a,tmp3,N,bn_ctx))
-		goto err;
-	if (!BN_mod_exp(K,tmp,tmp2,N,bn_ctx))
-		goto err;
-
-err :
-	BN_CTX_free(bn_ctx);
-	BN_clear_free(tmp);
-	BN_clear_free(tmp2);
-	BN_clear_free(tmp3);
-	BN_free(k);
-	return K;	
-	}
-
-int SRP_Verify_B_mod_N(BIGNUM *B, BIGNUM *N)
-	{
-	BIGNUM *r;
-	BN_CTX *bn_ctx; 
-	int ret = 0;
-
-	if (B == NULL || N == NULL ||
-		(bn_ctx = BN_CTX_new()) == NULL)
-		return 0;
-
-	if ((r = BN_new()) == NULL)
-		goto err;
-	/* Checks if B % N == 0 */
-	if (!BN_nnmod(r,B,N,bn_ctx))
-		goto err;
-	ret = !BN_is_zero(r);
-err:
-	BN_CTX_free(bn_ctx);
-	BN_free(r);
-	return ret;
-	}
-
-int SRP_Verify_A_mod_N(BIGNUM *A, BIGNUM *N)
-	{
-	/* Checks if A % N == 0 */
-	return SRP_Verify_B_mod_N(A,N) ;
-	}
-
-
-/* Check if G and N are kwown parameters. 
-   The values have been generated from the ietf-tls-srp draft version 8
-*/
-char *SRP_check_known_gN_param(BIGNUM *g, BIGNUM *N)
-	{
-	size_t i;
-	if ((g == NULL) || (N == NULL))
-		return 0;
-
-	srp_bn_print(g);
-	srp_bn_print(N);
-
-	for(i = 0; i < KNOWN_GN_NUMBER; i++)
-		{
-		if (BN_cmp(knowngN[i].g, g) == 0 && BN_cmp(knowngN[i].N, N) == 0) 
-			return knowngN[i].id;
-		}
-	return NULL;
-	}
-
-SRP_gN *SRP_get_default_gN(const char *id)
-	{
-	size_t i;
-
-	if (id == NULL) 
-		return knowngN;
-	for(i = 0; i < KNOWN_GN_NUMBER; i++)
-		{
-		if (strcmp(knowngN[i].id, id)==0)
-			return knowngN + i;
-		}
-	return NULL;
-	}
-#endif