Delete bundled copy of OpenSSL and replace with README.

openssl/crypto/rsa/rsa_pss.c

Index: openssl/crypto/rsa/rsa_pss.c
diff --git a/openssl/crypto/rsa/rsa_pss.c b/openssl/crypto/rsa/rsa_pss.c
deleted file mode 100644
index 5f9f533d0ce5bd39008eee6b04411d69d2a6ac84..0000000000000000000000000000000000000000
--- a/openssl/crypto/rsa/rsa_pss.c
+++ /dev/null
@@ -1,300 +0,0 @@
-/* rsa_pss.c */
-/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
- * project 2005.
- */
-/* ====================================================================
- * Copyright (c) 2005 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).
- *
- */
-
-#include <stdio.h>
-#include "cryptlib.h"
-#include <openssl/bn.h>
-#include <openssl/rsa.h>
-#include <openssl/evp.h>
-#include <openssl/rand.h>
-#include <openssl/sha.h>
-
-static const unsigned char zeroes[] = {0,0,0,0,0,0,0,0};
-
-#if defined(_MSC_VER) && defined(_ARM_)
-#pragma optimize("g", off)
-#endif
-
-int RSA_verify_PKCS1_PSS(RSA *rsa, const unsigned char *mHash,
-			const EVP_MD *Hash, const unsigned char *EM, int sLen)
-	{
-	return RSA_verify_PKCS1_PSS_mgf1(rsa, mHash, Hash, NULL, EM, sLen);
-	}
-
-int RSA_verify_PKCS1_PSS_mgf1(RSA *rsa, const unsigned char *mHash,
-			const EVP_MD *Hash, const EVP_MD *mgf1Hash,
-			const unsigned char *EM, int sLen)
-	{
-	int i;
-	int ret = 0;
-	int hLen, maskedDBLen, MSBits, emLen;
-	const unsigned char *H;
-	unsigned char *DB = NULL;
-	EVP_MD_CTX ctx;
-	unsigned char H_[EVP_MAX_MD_SIZE];
-	EVP_MD_CTX_init(&ctx);
-
-	if (mgf1Hash == NULL)
-		mgf1Hash = Hash;
-
-	hLen = EVP_MD_size(Hash);
-	if (hLen < 0)
-		goto err;
-	/*
-	 * Negative sLen has special meanings:
-	 *	-1	sLen == hLen
-	 *	-2	salt length is autorecovered from signature
-	 *	-N	reserved
-	 */
-	if      (sLen == -1)	sLen = hLen;
-	else if (sLen == -2)	sLen = -2;
-	else if (sLen < -2)
-		{
-		RSAerr(RSA_F_RSA_VERIFY_PKCS1_PSS_MGF1, RSA_R_SLEN_CHECK_FAILED);
-		goto err;
-		}
-
-	MSBits = (BN_num_bits(rsa->n) - 1) & 0x7;
-	emLen = RSA_size(rsa);
-	if (EM[0] & (0xFF << MSBits))
-		{
-		RSAerr(RSA_F_RSA_VERIFY_PKCS1_PSS_MGF1, RSA_R_FIRST_OCTET_INVALID);
-		goto err;
-		}
-	if (MSBits == 0)
-		{
-		EM++;
-		emLen--;
-		}
-	if (emLen < (hLen + sLen + 2)) /* sLen can be small negative */
-		{
-		RSAerr(RSA_F_RSA_VERIFY_PKCS1_PSS_MGF1, RSA_R_DATA_TOO_LARGE);
-		goto err;
-		}
-	if (EM[emLen - 1] != 0xbc)
-		{
-		RSAerr(RSA_F_RSA_VERIFY_PKCS1_PSS_MGF1, RSA_R_LAST_OCTET_INVALID);
-		goto err;
-		}
-	maskedDBLen = emLen - hLen - 1;
-	H = EM + maskedDBLen;
-	DB = OPENSSL_malloc(maskedDBLen);
-	if (!DB)
-		{
-		RSAerr(RSA_F_RSA_VERIFY_PKCS1_PSS_MGF1, ERR_R_MALLOC_FAILURE);
-		goto err;
-		}
-	if (PKCS1_MGF1(DB, maskedDBLen, H, hLen, mgf1Hash) < 0)
-		goto err;
-	for (i = 0; i < maskedDBLen; i++)
-		DB[i] ^= EM[i];
-	if (MSBits)
-		DB[0] &= 0xFF >> (8 - MSBits);
-	for (i = 0; DB[i] == 0 && i < (maskedDBLen-1); i++) ;
-	if (DB[i++] != 0x1)
-		{
-		RSAerr(RSA_F_RSA_VERIFY_PKCS1_PSS_MGF1, RSA_R_SLEN_RECOVERY_FAILED);
-		goto err;
-		}
-	if (sLen >= 0 && (maskedDBLen - i) != sLen)
-		{
-		RSAerr(RSA_F_RSA_VERIFY_PKCS1_PSS_MGF1, RSA_R_SLEN_CHECK_FAILED);
-		goto err;
-		}
-	if (!EVP_DigestInit_ex(&ctx, Hash, NULL)
-		|| !EVP_DigestUpdate(&ctx, zeroes, sizeof zeroes)
-		|| !EVP_DigestUpdate(&ctx, mHash, hLen))
-		goto err;
-	if (maskedDBLen - i)
-		{
-		if (!EVP_DigestUpdate(&ctx, DB + i, maskedDBLen - i))
-			goto err;
-		}
-	if (!EVP_DigestFinal_ex(&ctx, H_, NULL))
-		goto err;
-	if (memcmp(H_, H, hLen))
-		{
-		RSAerr(RSA_F_RSA_VERIFY_PKCS1_PSS_MGF1, RSA_R_BAD_SIGNATURE);
-		ret = 0;
-		}
-	else 
-		ret = 1;
-
-	err:
-	if (DB)
-		OPENSSL_free(DB);
-	EVP_MD_CTX_cleanup(&ctx);
-
-	return ret;
-
-	}
-
-int RSA_padding_add_PKCS1_PSS(RSA *rsa, unsigned char *EM,
-			const unsigned char *mHash,
-			const EVP_MD *Hash, int sLen)
-	{
-	return RSA_padding_add_PKCS1_PSS_mgf1(rsa, EM, mHash, Hash, NULL, sLen);
-	}
-
-int RSA_padding_add_PKCS1_PSS_mgf1(RSA *rsa, unsigned char *EM,
-			const unsigned char *mHash,
-			const EVP_MD *Hash, const EVP_MD *mgf1Hash, int sLen)
-	{
-	int i;
-	int ret = 0;
-	int hLen, maskedDBLen, MSBits, emLen;
-	unsigned char *H, *salt = NULL, *p;
-	EVP_MD_CTX ctx;
-
-	if (mgf1Hash == NULL)
-		mgf1Hash = Hash;
-
-	hLen = EVP_MD_size(Hash);
-	if (hLen < 0)
-		goto err;
-	/*
-	 * Negative sLen has special meanings:
-	 *	-1	sLen == hLen
-	 *	-2	salt length is maximized
-	 *	-N	reserved
-	 */
-	if      (sLen == -1)	sLen = hLen;
-	else if (sLen == -2)	sLen = -2;
-	else if (sLen < -2)
-		{
-		RSAerr(RSA_F_RSA_PADDING_ADD_PKCS1_PSS_MGF1, RSA_R_SLEN_CHECK_FAILED);
-		goto err;
-		}
-
-	MSBits = (BN_num_bits(rsa->n) - 1) & 0x7;
-	emLen = RSA_size(rsa);
-	if (MSBits == 0)
-		{
-		*EM++ = 0;
-		emLen--;
-		}
-	if (sLen == -2)
-		{
-		sLen = emLen - hLen - 2;
-		}
-	else if (emLen < (hLen + sLen + 2))
-		{
-		RSAerr(RSA_F_RSA_PADDING_ADD_PKCS1_PSS_MGF1,RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE);
-		goto err;
-		}
-	if (sLen > 0)
-		{
-		salt = OPENSSL_malloc(sLen);
-		if (!salt)
-			{
-			RSAerr(RSA_F_RSA_PADDING_ADD_PKCS1_PSS_MGF1,ERR_R_MALLOC_FAILURE);
-			goto err;
-			}
-		if (RAND_bytes(salt, sLen) <= 0)
-			goto err;
-		}
-	maskedDBLen = emLen - hLen - 1;
-	H = EM + maskedDBLen;
-	EVP_MD_CTX_init(&ctx);
-	if (!EVP_DigestInit_ex(&ctx, Hash, NULL)
-		|| !EVP_DigestUpdate(&ctx, zeroes, sizeof zeroes)
-		|| !EVP_DigestUpdate(&ctx, mHash, hLen))
-		goto err;
-	if (sLen && !EVP_DigestUpdate(&ctx, salt, sLen))
-		goto err;
-	if (!EVP_DigestFinal_ex(&ctx, H, NULL))
-		goto err;
-	EVP_MD_CTX_cleanup(&ctx);
-
-	/* Generate dbMask in place then perform XOR on it */
-	if (PKCS1_MGF1(EM, maskedDBLen, H, hLen, mgf1Hash))
-		goto err;
-
-	p = EM;
-
-	/* Initial PS XORs with all zeroes which is a NOP so just update
-	 * pointer. Note from a test above this value is guaranteed to
-	 * be non-negative.
-	 */
-	p += emLen - sLen - hLen - 2;
-	*p++ ^= 0x1;
-	if (sLen > 0)
-		{
-		for (i = 0; i < sLen; i++)
-			*p++ ^= salt[i];
-		}
-	if (MSBits)
-		EM[0] &= 0xFF >> (8 - MSBits);
-
-	/* H is already in place so just set final 0xbc */
-
-	EM[emLen - 1] = 0xbc;
-
-	ret = 1;
-
-	err:
-	if (salt)
-		OPENSSL_free(salt);
-
-	return ret;
-
-	}
-
-#if defined(_MSC_VER)
-#pragma optimize("",on)
-#endif