diff --context -r crypto/rsa/rsa.h ../SSLeay-0.8.1.new/crypto/rsa/rsa.h
*** crypto/rsa/rsa.h	Fri Jul 18 11:16:10 1997
--- ../SSLeay-0.8.1.new/crypto/rsa/rsa.h	Thu Aug 28 04:54:20 1997
***************
*** 101,106 ****
--- 101,107 ----
  #define RSA_3	0x3L
  #define RSA_F4	0x10001L
  
+ #define RSA_NO_PADDING		0
  #define RSA_PKCS1_PADDING	11
  #define RSA_SSLV23_PADDING	12
  
diff --context -r crypto/rsa/rsa_enc.c ../SSLeay-0.8.1.new/crypto/rsa/rsa_enc.c
*** crypto/rsa/rsa_enc.c	Fri Jul 18 11:16:10 1997
--- ../SSLeay-0.8.1.new/crypto/rsa/rsa_enc.c	Thu Aug 28 04:58:18 1997
***************
*** 111,117 ****
  	BN_CTX *ctx=NULL;
  
  	if (	(padding != RSA_PKCS1_PADDING) &&
! 		(padding != RSA_SSLV23_PADDING))
  		{
  		RSAerr(RSA_F_RSA_EAY_PUBLIC_ENCRYPT,RSA_R_UNKNOWN_PADDING_TYPE);
  		goto err;
--- 111,118 ----
  	BN_CTX *ctx=NULL;
  
  	if (	(padding != RSA_PKCS1_PADDING) &&
! 		(padding != RSA_SSLV23_PADDING) &&
! 		(padding != RSA_NO_PADDING))
  		{
  		RSAerr(RSA_F_RSA_EAY_PUBLIC_ENCRYPT,RSA_R_UNKNOWN_PADDING_TYPE);
  		goto err;
***************
*** 121,127 ****
  	if (ctx == NULL) goto err;
  
  	num=BN_num_bytes(rsa->n);
! 	if (flen > (num-11))
  		{
  		RSAerr(RSA_F_RSA_EAY_PUBLIC_ENCRYPT,RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE);
  		goto err;
--- 122,129 ----
  	if (ctx == NULL) goto err;
  
  	num=BN_num_bytes(rsa->n);
! 	if (((padding == RSA_NO_PADDING) && (flen > num)) ||
! 	    ((padding != RSA_NO_PADDING) && (flen > (num-11))))
  		{
  		RSAerr(RSA_F_RSA_EAY_PUBLIC_ENCRYPT,RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE);
  		goto err;
***************
*** 135,161 ****
  		}
  	p=(unsigned char *)buf;
  
! 	*(p++)=0;
! 	*(p++)=2; /* Public Key BT (Block Type) */
! 
! 	/* pad out with non-zero random data */
! 	j=num-3-flen;
! 
! 	RAND_bytes(p,j);
! 	for (i=0; i<j; i++)
! 		{
! 		if (*p == '\0')
  			do	{
! 				RAND_bytes(p,1);
! 				} while (*p == '\0');
! 		p++;
  		}
  
- 	if (padding == RSA_SSLV23_PADDING)
- 		memset(&(p[-8]),3,8);
- 
- 	*(p++)='\0';
- 
  	memcpy(p,from,(unsigned int)flen);
  
  	f=BN_new();
--- 137,166 ----
  		}
  	p=(unsigned char *)buf;
  
!  	if (padding != RSA_NO_PADDING)
!  		{
! 		  *(p++)=0;
! 		  *(p++)=2; /* Public Key BT (Block Type) */
! 		  
! 		  /* pad out with non-zero random data */
! 		  j=num-3-flen;
! 		  
! 		  RAND_bytes(p,j);
! 		  for (i=0; i<j; i++)
! 		    {
! 		      if (*p == '\0')
  			do	{
! 			  RAND_bytes(p,1);
! 			} while (*p == '\0');
! 		      p++;
! 		    }
! 		  
! 		  if (padding == RSA_SSLV23_PADDING)
! 		    memset(&(p[-8]),3,8);
! 		  
! 		  *(p++)='\0';
  		}
  
  	memcpy(p,from,(unsigned int)flen);
  
  	f=BN_new();
***************
*** 279,285 ****
  	unsigned char *buf=NULL;
  	BN_CTX *ctx=NULL;
  
! 	if ((padding != RSA_PKCS1_PADDING) && (padding != RSA_SSLV23_PADDING))
  		{
  		RSAerr(RSA_F_RSA_EAY_PRIVATE_DECRYPT,RSA_R_UNKNOWN_PADDING_TYPE);
  		goto err;
--- 284,292 ----
  	unsigned char *buf=NULL;
  	BN_CTX *ctx=NULL;
  
! 	if ((padding != RSA_PKCS1_PADDING) &&
! 	    (padding != RSA_SSLV23_PADDING) &&
! 	    (padding != RSA_NO_PADDING))
  		{
  		RSAerr(RSA_F_RSA_EAY_PRIVATE_DECRYPT,RSA_R_UNKNOWN_PADDING_TYPE);
  		goto err;
***************
*** 321,391 ****
  		{ if (!rsa->meth->bn_mod_exp(ret,f,rsa->d,rsa->n,ctx)) goto err; }
  
  	p=buf;
! 	BN_bn2bin(ret,p);
! 
! 	/* BT must be 02 */
! 	if (*(p++) != 02)
! 		{
! 		RSAerr(RSA_F_RSA_EAY_PRIVATE_DECRYPT,RSA_R_BLOCK_TYPE_IS_NOT_02);
! 		goto err;
! 		}
! 
! 	/* scan over padding data */
! 	j=num-2; /* one for type and one for the prepended 0. */
! 	for (i=0; i<j; i++)
! 		if (*(p++) == 0) break;
! 
! 	if (i == j)
! 		{
! 		RSAerr(RSA_F_RSA_EAY_PRIVATE_DECRYPT,RSA_R_NULL_BEFORE_BLOCK_MISSING);
! 		goto err;
! 		}
  
! 	if (i < 8)
  		{
! 		RSAerr(RSA_F_RSA_EAY_PRIVATE_DECRYPT,RSA_R_BAD_PAD_BYTE_COUNT);
! 		goto err;
! 		}
! 
  #undef RSA_DEBUG
  #ifdef RSA_DEBUG
! 	{
! 	int z;
! 	unsigned char *q;
! 	q= &(p[-9]);
! 	fprintf(stderr,"\n");
! 	for (z=0; z<8; z++) fprintf(stderr,"%02X",q[z]);
! 	fprintf(stderr,"\n");
! 	}
  #endif
! 
! 	if (padding == RSA_SSLV23_PADDING)
! 		{
! 		int z;
! 		unsigned char *q;
! 
! 		/* -9 because we have jumped the '\0' */
! 		q= &(p[-9]);
! 		for (z=0; z<8; z++)
  			{
! 			if (*(q++) != 0x03)
! 				break;
  			}
! 		if (z == 8)
  			{
! 			RSAerr(RSA_F_RSA_EAY_PRIVATE_DECRYPT,RSA_R_SSLV3_ROLLBACK_ATTACK);
! 			goto err;
  			}
! 		}
! 
! 	/* skip over the '\0' */
! 	i++;	
! 	j-=i;
! 
! 	/* output data */
! 	memcpy(to,p,(unsigned int)j);
! 	r=j;
! err:
  	if (ctx != NULL) BN_CTX_free(ctx);
  	if (f != NULL) BN_free(f);
  	if (ret != NULL) BN_free(ret);
--- 328,412 ----
  		{ if (!rsa->meth->bn_mod_exp(ret,f,rsa->d,rsa->n,ctx)) goto err; }
  
  	p=buf;
! 	j=BN_bn2bin(ret,p); /* this 'j' only applies to RSA_NO_PADDING, reset otherwise below */
  
! 	if (padding != RSA_NO_PADDING)
  		{
! 		  /* BT must be 02 */
! 		  if (*(p++) != 02)
! 		    {
! 		      RSAerr(RSA_F_RSA_EAY_PRIVATE_DECRYPT,RSA_R_BLOCK_TYPE_IS_NOT_02);
! 		      goto err;
! 		    }
! 		  
! 		  /* scan over padding data */
! 		  j=num-2; /* one for type and one for the prepended 0. */
! 		  for (i=0; i<j; i++)
! 		    if (*(p++) == 0) break;
! 		  
! 		  if (i == j)
! 		    {
! 		      RSAerr(RSA_F_RSA_EAY_PRIVATE_DECRYPT,RSA_R_NULL_BEFORE_BLOCK_MISSING);
! 		      goto err;
! 		    }
! 		  
! 		  if (i < 8)
! 		    {
! 		      RSAerr(RSA_F_RSA_EAY_PRIVATE_DECRYPT,RSA_R_BAD_PAD_BYTE_COUNT);
! 		      goto err;
! 		    }
! 		  
  #undef RSA_DEBUG
  #ifdef RSA_DEBUG
! 		  {
! 		    int z;
! 		    unsigned char *q;
! 		    q= &(p[-9]);
! 		    fprintf(stderr,"\n");
! 		    for (z=0; z<8; z++) fprintf(stderr,"%02X",q[z]);
! 		    fprintf(stderr,"\n");
! 		  }
  #endif
! 		  
! 		  if (padding == RSA_SSLV23_PADDING)
! 		    {
! 		      int z;
! 		      unsigned char *q;
! 		      
! 		      /* -9 because we have jumped the '\0' */
! 		      q= &(p[-9]);
! 		      for (z=0; z<8; z++)
  			{
! 			  if (*(q++) != 0x03)
! 			    break;
  			}
! 		      if (z == 8)
  			{
! 			  RSAerr(RSA_F_RSA_EAY_PRIVATE_DECRYPT,RSA_R_SSLV3_ROLLBACK_ATTACK);
! 			  goto err;
  			}
! 		    }
! 		  
! 		  /* skip over the '\0' */
! 		  i++;	
! 		  j-=i;
! 		}
! 
!  	if (padding == RSA_NO_PADDING)
! 	  {
! 	    for (i=0; i<(num-j); i++)
! 	      *to++ = 0;
! 	    /* output data */
! 	    memcpy(to,p,(unsigned int)j);
! 	    r=j+(num-j);
! 	  }
!  	else
! 	  {
! 	    /* output data */
! 	    memcpy(to,p,(unsigned int)j);
! 	    r=j;
! 	  }
! 	err:
  	if (ctx != NULL) BN_CTX_free(ctx);
  	if (f != NULL) BN_free(f);
  	if (ret != NULL) BN_free(ret);





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