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openssl/fips/rsa/fips_rsa_sign.c

Index: openssl/fips/rsa/fips_rsa_sign.c
===================================================================
--- openssl/fips/rsa/fips_rsa_sign.c	(revision 105093)
+++ openssl/fips/rsa/fips_rsa_sign.c	(working copy)
@@ -1,554 +0,0 @@
-/* fips_rsa_sign.c */
-/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
- * project 2007.
- */
-/* ====================================================================
- * Copyright (c) 2007 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 <string.h>
-#include <openssl/evp.h>
-#include <openssl/rsa.h>
-#include <openssl/err.h>
-#include <openssl/sha.h>
-
-#ifdef OPENSSL_FIPS
-
-/* FIPS versions of RSA_sign() and RSA_verify().
- * These will only have to deal with SHA* signatures and by including
- * pregenerated encodings all ASN1 dependencies can be avoided
- */
-
-/* Standard encodings including NULL parameter */
-
-static const unsigned char sha1_bin[] = {
-  0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2b, 0x0e, 0x03, 0x02, 0x1a, 0x05,
-  0x00, 0x04, 0x14
-};
-
-static const unsigned char sha224_bin[] = {
-  0x30, 0x2d, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03,
-  0x04, 0x02, 0x04, 0x05, 0x00, 0x04, 0x1c
-};
-
-static const unsigned char sha256_bin[] = {
-  0x30, 0x31, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03,
-  0x04, 0x02, 0x01, 0x05, 0x00, 0x04, 0x20
-};
-
-static const unsigned char sha384_bin[] = {
-  0x30, 0x41, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03,
-  0x04, 0x02, 0x02, 0x05, 0x00, 0x04, 0x30
-};
-
-static const unsigned char sha512_bin[] = {
-  0x30, 0x51, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03,
-  0x04, 0x02, 0x03, 0x05, 0x00, 0x04, 0x40
-};
-
-/* Alternate encodings with absent parameters. We don't generate signature
- * using this format but do tolerate received signatures of this form.
- */
-
-static unsigned char sha1_nn_bin[] = {
-  0x30, 0x1f, 0x30, 0x07, 0x06, 0x05, 0x2b, 0x0e, 0x03, 0x02, 0x1a, 0x04,
-  0x14
-};
-
-static unsigned char sha224_nn_bin[] = {
-  0x30, 0x2b, 0x30, 0x0b, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03,
-  0x04, 0x02, 0x04, 0x04, 0x1c
-};
-
-static unsigned char sha256_nn_bin[] = {
-  0x30, 0x2f, 0x30, 0x0b, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03,
-  0x04, 0x02, 0x01, 0x04, 0x20
-};
-
-static unsigned char sha384_nn_bin[] = {
-  0x30, 0x3f, 0x30, 0x0b, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03,
-  0x04, 0x02, 0x02, 0x04, 0x30
-};
-
-static unsigned char sha512_nn_bin[] = {
-  0x30, 0x4f, 0x30, 0x0b, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01, 0x65, 0x03,
-  0x04, 0x02, 0x03, 0x04, 0x40
-};
-
-
-static const unsigned char *fips_digestinfo_encoding(int nid, unsigned int *len)
-	{
-	switch (nid)
-		{
-
-		case NID_sha1:
-		*len = sizeof(sha1_bin);
-		return sha1_bin;
-
-		case NID_sha224:
-		*len = sizeof(sha224_bin);
-		return sha224_bin;
-
-		case NID_sha256:
-		*len = sizeof(sha256_bin);
-		return sha256_bin;
-
-		case NID_sha384:
-		*len = sizeof(sha384_bin);
-		return sha384_bin;
-
-		case NID_sha512:
-		*len = sizeof(sha512_bin);
-		return sha512_bin;
-
-		default:
-		return NULL;
-
-		}
-	}
-
-static const unsigned char *fips_digestinfo_nn_encoding(int nid, unsigned int *len)
-	{
-	switch (nid)
-		{
-
-		case NID_sha1:
-		*len = sizeof(sha1_nn_bin);
-		return sha1_nn_bin;
-
-		case NID_sha224:
-		*len = sizeof(sha224_nn_bin);
-		return sha224_nn_bin;
-
-		case NID_sha256:
-		*len = sizeof(sha256_nn_bin);
-		return sha256_nn_bin;
-
-		case NID_sha384:
-		*len = sizeof(sha384_nn_bin);
-		return sha384_nn_bin;
-
-		case NID_sha512:
-		*len = sizeof(sha512_nn_bin);
-		return sha512_nn_bin;
-
-		default:
-		return NULL;
-
-		}
-	}
-
-static int fips_rsa_sign(int type, const unsigned char *x, unsigned int y,
-	     unsigned char *sigret, unsigned int *siglen, EVP_MD_SVCTX *sv)
-	{
-	int i=0,j,ret=0;
-	unsigned int dlen;
-	const unsigned char *der;
-	unsigned int m_len;
-	int pad_mode = sv->mctx->flags & EVP_MD_CTX_FLAG_PAD_MASK;
-	int rsa_pad_mode = 0;
-	RSA *rsa = sv->key;
-	/* Largest DigestInfo: 19 (max encoding) + max MD */
-	unsigned char tmpdinfo[19 + EVP_MAX_MD_SIZE];
-	unsigned char md[EVP_MAX_MD_SIZE + 1];
-
-        EVP_DigestFinal_ex(sv->mctx, md, &m_len);
-
-	if((rsa->flags & RSA_FLAG_SIGN_VER) && rsa->meth->rsa_sign)
-		{
-		ret = rsa->meth->rsa_sign(type, md, m_len,
-			sigret, siglen, rsa);
-		goto done;
-		}
-
-	if (pad_mode == EVP_MD_CTX_FLAG_PAD_X931)
-		{
-		int hash_id;
-		memcpy(tmpdinfo, md, m_len);
-		hash_id = RSA_X931_hash_id(M_EVP_MD_CTX_type(sv->mctx));
-		if (hash_id == -1)
-			{
-			RSAerr(RSA_F_FIPS_RSA_SIGN,RSA_R_UNKNOWN_ALGORITHM_TYPE);
-			return 0;
-			}
-		tmpdinfo[m_len] = (unsigned char)hash_id;
-		i = m_len + 1;
-		rsa_pad_mode = RSA_X931_PADDING;
-		}
-	else if (pad_mode == EVP_MD_CTX_FLAG_PAD_PKCS1)
-		{
-
-		der = fips_digestinfo_encoding(type, &dlen);
-		
-		if (!der)
-			{
-			RSAerr(RSA_F_FIPS_RSA_SIGN,RSA_R_UNKNOWN_ALGORITHM_TYPE);
-			return 0;
-			}
-		memcpy(tmpdinfo, der, dlen);
-		memcpy(tmpdinfo + dlen, md, m_len);
-
-		i = dlen + m_len;
-		rsa_pad_mode = RSA_PKCS1_PADDING;
-
-		}
-	else if (pad_mode == EVP_MD_CTX_FLAG_PAD_PSS)
-		{
-		unsigned char *sbuf;
-		int saltlen;
-		i = RSA_size(rsa);
-		sbuf = OPENSSL_malloc(RSA_size(rsa));
-		saltlen = M_EVP_MD_CTX_FLAG_PSS_SALT(sv->mctx);
-		if (saltlen == EVP_MD_CTX_FLAG_PSS_MDLEN)
-			saltlen = -1;
-		else if (saltlen == EVP_MD_CTX_FLAG_PSS_MREC)
-			saltlen = -2;
-		if (!sbuf)
-			{
-			RSAerr(RSA_F_FIPS_RSA_SIGN,ERR_R_MALLOC_FAILURE);
-			goto psserr;
-			}
-		if (!RSA_padding_add_PKCS1_PSS(rsa, sbuf, md,
-					M_EVP_MD_CTX_md(sv->mctx), saltlen))
-			goto psserr;
-		j=rsa->meth->rsa_priv_enc(i,sbuf,sigret,rsa,RSA_NO_PADDING);
-		if (j > 0)
-			{
-			ret=1;
-			*siglen=j;
-			}
-		psserr:
-		OPENSSL_cleanse(md,m_len);
-		OPENSSL_cleanse(sbuf, i);
-		OPENSSL_free(sbuf);
-		return ret;
-		}
-
-	j=RSA_size(rsa);
-	if (i > (j-RSA_PKCS1_PADDING_SIZE))
-		{
-		RSAerr(RSA_F_FIPS_RSA_SIGN,RSA_R_DIGEST_TOO_BIG_FOR_RSA_KEY);
-		goto done;
-		}
-	/* NB: call underlying method directly to avoid FIPS blocking */
-	j=rsa->meth->rsa_priv_enc(i,tmpdinfo,sigret,rsa,rsa_pad_mode);
-	if (j > 0)
-		{
-		ret=1;
-		*siglen=j;
-		}
-
-	done:
-	OPENSSL_cleanse(tmpdinfo,i);
-	OPENSSL_cleanse(md,m_len);
-	return ret;
-	}
-
-static int fips_rsa_verify(int dtype,
-		const unsigned char *x, unsigned int y,
-		unsigned char *sigbuf, unsigned int siglen, EVP_MD_SVCTX *sv)
-	{
-	int i,ret=0;
-	unsigned int dlen, diglen;
-	int pad_mode = sv->mctx->flags & EVP_MD_CTX_FLAG_PAD_MASK;
-	int rsa_pad_mode = 0;
-	unsigned char *s;
-	const unsigned char *der;
-	unsigned char dig[EVP_MAX_MD_SIZE];
-	RSA *rsa = sv->key;
-
-	if (siglen != (unsigned int)RSA_size(sv->key))
-		{
-		RSAerr(RSA_F_FIPS_RSA_VERIFY,RSA_R_WRONG_SIGNATURE_LENGTH);
-		return(0);
-		}
-
-        EVP_DigestFinal_ex(sv->mctx, dig, &diglen);
-
-	if((rsa->flags & RSA_FLAG_SIGN_VER) && rsa->meth->rsa_verify)
-		{
-		return rsa->meth->rsa_verify(dtype, dig, diglen,
-			sigbuf, siglen, rsa);
-		}
-
-
-	s= OPENSSL_malloc((unsigned int)siglen);
-	if (s == NULL)
-		{
-		RSAerr(RSA_F_FIPS_RSA_VERIFY,ERR_R_MALLOC_FAILURE);
-		goto err;
-		}
-	if (pad_mode == EVP_MD_CTX_FLAG_PAD_X931)
-		rsa_pad_mode = RSA_X931_PADDING;
-	else if (pad_mode == EVP_MD_CTX_FLAG_PAD_PKCS1)
-		rsa_pad_mode = RSA_PKCS1_PADDING;
-	else if (pad_mode == EVP_MD_CTX_FLAG_PAD_PSS)
-		rsa_pad_mode = RSA_NO_PADDING;
-
-	/* NB: call underlying method directly to avoid FIPS blocking */
-	i=rsa->meth->rsa_pub_dec((int)siglen,sigbuf,s, rsa, rsa_pad_mode);
-
-	if (i <= 0) goto err;
-
-	if (pad_mode == EVP_MD_CTX_FLAG_PAD_X931)
-		{
-		int hash_id;
-		if (i != (int)(diglen + 1))
-			{
-			RSAerr(RSA_F_FIPS_RSA_VERIFY,RSA_R_BAD_SIGNATURE);
-			goto err;
-			}
-		hash_id = RSA_X931_hash_id(M_EVP_MD_CTX_type(sv->mctx));
-		if (hash_id == -1)
-			{
-			RSAerr(RSA_F_FIPS_RSA_VERIFY,RSA_R_UNKNOWN_ALGORITHM_TYPE);
-			goto err;
-			}
-		if (s[diglen] != (unsigned char)hash_id)
-			{
-			RSAerr(RSA_F_FIPS_RSA_VERIFY,RSA_R_BAD_SIGNATURE);
-			goto err;
-			}
-		if (memcmp(s, dig, diglen))
-			{
-			RSAerr(RSA_F_FIPS_RSA_VERIFY,RSA_R_BAD_SIGNATURE);
-			goto err;
-			}
-		ret = 1;
-		}
-	else if (pad_mode == EVP_MD_CTX_FLAG_PAD_PKCS1)
-		{
-
-		der = fips_digestinfo_encoding(dtype, &dlen);
-		
-		if (!der)
-			{
-			RSAerr(RSA_F_FIPS_RSA_VERIFY,RSA_R_UNKNOWN_ALGORITHM_TYPE);
-			return(0);
-			}
-
-		/* Compare, DigestInfo length, DigestInfo header and finally
-		 * digest value itself
-		 */
-
-		/* If length mismatch try alternate encoding */
-		if (i != (int)(dlen + diglen))
-			der = fips_digestinfo_nn_encoding(dtype, &dlen);
-
-		if ((i != (int)(dlen + diglen)) || memcmp(der, s, dlen)
-			|| memcmp(s + dlen, dig, diglen))
-			{
-			RSAerr(RSA_F_FIPS_RSA_VERIFY,RSA_R_BAD_SIGNATURE);
-			goto err;
-			}
-		ret = 1;
-
-		}
-	else if (pad_mode == EVP_MD_CTX_FLAG_PAD_PSS)
-		{
-		int saltlen;
-		saltlen = M_EVP_MD_CTX_FLAG_PSS_SALT(sv->mctx);
-		if (saltlen == EVP_MD_CTX_FLAG_PSS_MDLEN)
-			saltlen = -1;
-		else if (saltlen == EVP_MD_CTX_FLAG_PSS_MREC)
-			saltlen = -2;
-		ret = RSA_verify_PKCS1_PSS(rsa, dig, M_EVP_MD_CTX_md(sv->mctx),
-						s, saltlen);
-		if (ret < 0)
-			ret = 0;
-		}
-err:
-	if (s != NULL)
-		{
-		OPENSSL_cleanse(s, siglen);
-		OPENSSL_free(s);
-		}
-	return(ret);
-	}
-
-#define EVP_PKEY_RSA_fips_method \
-				(evp_sign_method *)fips_rsa_sign, \
-				(evp_verify_method *)fips_rsa_verify, \
-				{EVP_PKEY_RSA,EVP_PKEY_RSA2,0,0}
-
-static int init(EVP_MD_CTX *ctx)
-	{ return SHA1_Init(ctx->md_data); }
-
-static int update(EVP_MD_CTX *ctx,const void *data,size_t count)
-	{ return SHA1_Update(ctx->md_data,data,count); }
-
-static int final(EVP_MD_CTX *ctx,unsigned char *md)
-	{ return SHA1_Final(md,ctx->md_data); }
-
-static const EVP_MD sha1_md=
-	{
-	NID_sha1,
-	NID_sha1WithRSAEncryption,
-	SHA_DIGEST_LENGTH,
-	EVP_MD_FLAG_FIPS|EVP_MD_FLAG_SVCTX,
-	init,
-	update,
-	final,
-	NULL,
-	NULL,
-	EVP_PKEY_RSA_fips_method,
-	SHA_CBLOCK,
-	sizeof(EVP_MD *)+sizeof(SHA_CTX),
-	};
-
-const EVP_MD *EVP_sha1(void)
-	{
-	return(&sha1_md);
-	}
-
-static int init224(EVP_MD_CTX *ctx)
-	{ return SHA224_Init(ctx->md_data); }
-static int init256(EVP_MD_CTX *ctx)
-	{ return SHA256_Init(ctx->md_data); }
-/*
- * Even though there're separate SHA224_[Update|Final], we call
- * SHA256 functions even in SHA224 context. This is what happens
- * there anyway, so we can spare few CPU cycles:-)
- */
-static int update256(EVP_MD_CTX *ctx,const void *data,size_t count)
-	{ return SHA256_Update(ctx->md_data,data,count); }
-static int final256(EVP_MD_CTX *ctx,unsigned char *md)
-	{ return SHA256_Final(md,ctx->md_data); }
-
-static const EVP_MD sha224_md=
-	{
-	NID_sha224,
-	NID_sha224WithRSAEncryption,
-	SHA224_DIGEST_LENGTH,
-	EVP_MD_FLAG_FIPS|EVP_MD_FLAG_SVCTX,
-	init224,
-	update256,
-	final256,
-	NULL,
-	NULL,
-	EVP_PKEY_RSA_fips_method,
-	SHA256_CBLOCK,
-	sizeof(EVP_MD *)+sizeof(SHA256_CTX),
-	};
-
-const EVP_MD *EVP_sha224(void)
-	{ return(&sha224_md); }
-
-static const EVP_MD sha256_md=
-	{
-	NID_sha256,
-	NID_sha256WithRSAEncryption,
-	SHA256_DIGEST_LENGTH,
-	EVP_MD_FLAG_FIPS|EVP_MD_FLAG_SVCTX,
-	init256,
-	update256,
-	final256,
-	NULL,
-	NULL,
-	EVP_PKEY_RSA_fips_method,
-	SHA256_CBLOCK,
-	sizeof(EVP_MD *)+sizeof(SHA256_CTX),
-	};
-
-const EVP_MD *EVP_sha256(void)
-	{ return(&sha256_md); }
-
-static int init384(EVP_MD_CTX *ctx)
-	{ return SHA384_Init(ctx->md_data); }
-static int init512(EVP_MD_CTX *ctx)
-	{ return SHA512_Init(ctx->md_data); }
-/* See comment in SHA224/256 section */
-static int update512(EVP_MD_CTX *ctx,const void *data,size_t count)
-	{ return SHA512_Update(ctx->md_data,data,count); }
-static int final512(EVP_MD_CTX *ctx,unsigned char *md)
-	{ return SHA512_Final(md,ctx->md_data); }
-
-static const EVP_MD sha384_md=
-	{
-	NID_sha384,
-	NID_sha384WithRSAEncryption,
-	SHA384_DIGEST_LENGTH,
-	EVP_MD_FLAG_FIPS|EVP_MD_FLAG_SVCTX,
-	init384,
-	update512,
-	final512,
-	NULL,
-	NULL,
-	EVP_PKEY_RSA_fips_method,
-	SHA512_CBLOCK,
-	sizeof(EVP_MD *)+sizeof(SHA512_CTX),
-	};
-
-const EVP_MD *EVP_sha384(void)
-	{ return(&sha384_md); }
-
-static const EVP_MD sha512_md=
-	{
-	NID_sha512,
-	NID_sha512WithRSAEncryption,
-	SHA512_DIGEST_LENGTH,
-	EVP_MD_FLAG_FIPS|EVP_MD_FLAG_SVCTX,
-	init512,
-	update512,
-	final512,
-	NULL,
-	NULL,
-	EVP_PKEY_RSA_fips_method,
-	SHA512_CBLOCK,
-	sizeof(EVP_MD *)+sizeof(SHA512_CTX),
-	};
-
-const EVP_MD *EVP_sha512(void)
-	{ return(&sha512_md); }
-
-#endif