Initial import

1 files changed, 285 insertions, 0 deletions

diff --git a/openssl/crypto/rsa/rsa_sign.c b/openssl/crypto/rsa/rsa_sign.c
new file mode 100644
index 00000000..0be4ec7f
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+++ b/openssl/crypto/rsa/rsa_sign.c
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+/* crypto/rsa/rsa_sign.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.]
+ */
+
+#include <stdio.h>
+#include "cryptlib.h"
+#include <openssl/bn.h>
+#include <openssl/rsa.h>
+#include <openssl/objects.h>
+#include <openssl/x509.h>
+#include "rsa_locl.h"
+
+/* Size of an SSL signature: MD5+SHA1 */
+#define SSL_SIG_LENGTH	36
+
+int RSA_sign(int type, const unsigned char *m, unsigned int m_len,
+	     unsigned char *sigret, unsigned int *siglen, RSA *rsa)
+	{
+	X509_SIG sig;
+	ASN1_TYPE parameter;
+	int i,j,ret=1;
+	unsigned char *p, *tmps = NULL;
+	const unsigned char *s = NULL;
+	X509_ALGOR algor;
+	ASN1_OCTET_STRING digest;
+	if((rsa->flags & RSA_FLAG_SIGN_VER) && rsa->meth->rsa_sign)
+		{
+		return rsa->meth->rsa_sign(type, m, m_len,
+			sigret, siglen, rsa);
+		}
+	/* Special case: SSL signature, just check the length */
+	if(type == NID_md5_sha1) {
+		if(m_len != SSL_SIG_LENGTH) {
+			RSAerr(RSA_F_RSA_SIGN,RSA_R_INVALID_MESSAGE_LENGTH);
+			return(0);
+		}
+		i = SSL_SIG_LENGTH;
+		s = m;
+	} else {
+		sig.algor= &algor;
+		sig.algor->algorithm=OBJ_nid2obj(type);
+		if (sig.algor->algorithm == NULL)
+			{
+			RSAerr(RSA_F_RSA_SIGN,RSA_R_UNKNOWN_ALGORITHM_TYPE);
+			return(0);
+			}
+		if (sig.algor->algorithm->length == 0)
+			{
+			RSAerr(RSA_F_RSA_SIGN,RSA_R_THE_ASN1_OBJECT_IDENTIFIER_IS_NOT_KNOWN_FOR_THIS_MD);
+			return(0);
+			}
+		parameter.type=V_ASN1_NULL;
+		parameter.value.ptr=NULL;
+		sig.algor->parameter= &parameter;
+
+		sig.digest= &digest;
+		sig.digest->data=(unsigned char *)m; /* TMP UGLY CAST */
+		sig.digest->length=m_len;
+
+		i=i2d_X509_SIG(&sig,NULL);
+	}
+	j=RSA_size(rsa);
+	if (i > (j-RSA_PKCS1_PADDING_SIZE))
+		{
+		RSAerr(RSA_F_RSA_SIGN,RSA_R_DIGEST_TOO_BIG_FOR_RSA_KEY);
+		return(0);
+		}
+	if(type != NID_md5_sha1) {
+		tmps=(unsigned char *)OPENSSL_malloc((unsigned int)j+1);
+		if (tmps == NULL)
+			{
+			RSAerr(RSA_F_RSA_SIGN,ERR_R_MALLOC_FAILURE);
+			return(0);
+			}
+		p=tmps;
+		i2d_X509_SIG(&sig,&p);
+		s=tmps;
+	}
+	i=RSA_private_encrypt(i,s,sigret,rsa,RSA_PKCS1_PADDING);
+	if (i <= 0)
+		ret=0;
+	else
+		*siglen=i;
+
+	if(type != NID_md5_sha1) {
+		OPENSSL_cleanse(tmps,(unsigned int)j+1);
+		OPENSSL_free(tmps);
+	}
+	return(ret);
+	}
+
+int int_rsa_verify(int dtype, const unsigned char *m,
+			  unsigned int m_len,
+			  unsigned char *rm, size_t *prm_len,
+			  const unsigned char *sigbuf, size_t siglen,
+			  RSA *rsa)
+	{
+	int i,ret=0,sigtype;
+	unsigned char *s;
+	X509_SIG *sig=NULL;
+
+	if (siglen != (unsigned int)RSA_size(rsa))
+		{
+		RSAerr(RSA_F_INT_RSA_VERIFY,RSA_R_WRONG_SIGNATURE_LENGTH);
+		return(0);
+		}
+
+	if((dtype == NID_md5_sha1) && rm)
+		{
+		i = RSA_public_decrypt((int)siglen,
+					sigbuf,rm,rsa,RSA_PKCS1_PADDING);
+		if (i <= 0)
+			return 0;
+		*prm_len = i;
+		return 1;
+		}
+
+	s=(unsigned char *)OPENSSL_malloc((unsigned int)siglen);
+	if (s == NULL)
+		{
+		RSAerr(RSA_F_INT_RSA_VERIFY,ERR_R_MALLOC_FAILURE);
+		goto err;
+		}
+	if((dtype == NID_md5_sha1) && (m_len != SSL_SIG_LENGTH) ) {
+			RSAerr(RSA_F_INT_RSA_VERIFY,RSA_R_INVALID_MESSAGE_LENGTH);
+			goto err;
+	}
+	i=RSA_public_decrypt((int)siglen,sigbuf,s,rsa,RSA_PKCS1_PADDING);
+
+	if (i <= 0) goto err;
+
+	/* Special case: SSL signature */
+	if(dtype == NID_md5_sha1) {
+		if((i != SSL_SIG_LENGTH) || memcmp(s, m, SSL_SIG_LENGTH))
+				RSAerr(RSA_F_INT_RSA_VERIFY,RSA_R_BAD_SIGNATURE);
+		else ret = 1;
+	} else {
+		const unsigned char *p=s;
+		sig=d2i_X509_SIG(NULL,&p,(long)i);
+
+		if (sig == NULL) goto err;
+
+		/* Excess data can be used to create forgeries */
+		if(p != s+i)
+			{
+			RSAerr(RSA_F_INT_RSA_VERIFY,RSA_R_BAD_SIGNATURE);
+			goto err;
+			}
+
+		/* Parameters to the signature algorithm can also be used to
+		   create forgeries */
+		if(sig->algor->parameter
+		   && ASN1_TYPE_get(sig->algor->parameter) != V_ASN1_NULL)
+			{
+			RSAerr(RSA_F_INT_RSA_VERIFY,RSA_R_BAD_SIGNATURE);
+			goto err;
+			}
+
+		sigtype=OBJ_obj2nid(sig->algor->algorithm);
+
+
+	#ifdef RSA_DEBUG
+		/* put a backward compatibility flag in EAY */
+		fprintf(stderr,"in(%s) expect(%s)\n",OBJ_nid2ln(sigtype),
+			OBJ_nid2ln(dtype));
+	#endif
+		if (sigtype != dtype)
+			{
+			if (((dtype == NID_md5) &&
+				(sigtype == NID_md5WithRSAEncryption)) ||
+				((dtype == NID_md2) &&
+				(sigtype == NID_md2WithRSAEncryption)))
+				{
+				/* ok, we will let it through */
+#if !defined(OPENSSL_NO_STDIO) && !defined(OPENSSL_SYS_WIN16)
+				fprintf(stderr,"signature has problems, re-make with post SSLeay045\n");
+#endif
+				}
+			else
+				{
+				RSAerr(RSA_F_INT_RSA_VERIFY,
+						RSA_R_ALGORITHM_MISMATCH);
+				goto err;
+				}
+			}
+		if (rm)
+			{
+			const EVP_MD *md;
+			md = EVP_get_digestbynid(dtype);
+			if (md && (EVP_MD_size(md) != sig->digest->length))
+				RSAerr(RSA_F_INT_RSA_VERIFY,
+						RSA_R_INVALID_DIGEST_LENGTH);
+			else
+				{
+				memcpy(rm, sig->digest->data,
+							sig->digest->length);
+				*prm_len = sig->digest->length;
+				ret = 1;
+				}
+			}
+		else if (((unsigned int)sig->digest->length != m_len) ||
+			(memcmp(m,sig->digest->data,m_len) != 0))
+			{
+			RSAerr(RSA_F_INT_RSA_VERIFY,RSA_R_BAD_SIGNATURE);
+			}
+		else
+			ret=1;
+	}
+err:
+	if (sig != NULL) X509_SIG_free(sig);
+	if (s != NULL)
+		{
+		OPENSSL_cleanse(s,(unsigned int)siglen);
+		OPENSSL_free(s);
+		}
+	return(ret);
+	}
+
+int RSA_verify(int dtype, const unsigned char *m, unsigned int m_len,
+		const unsigned char *sigbuf, unsigned int siglen,
+		RSA *rsa)
+	{
+
+	if((rsa->flags & RSA_FLAG_SIGN_VER) && rsa->meth->rsa_verify)
+		{
+		return rsa->meth->rsa_verify(dtype, m, m_len,
+			sigbuf, siglen, rsa);
+		}
+
+	return int_rsa_verify(dtype, m, m_len, NULL, NULL, sigbuf, siglen, rsa);
+	}