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openssl/crypto/evp/e_des.c

Index: openssl/crypto/evp/e_des.c
===================================================================
--- openssl/crypto/evp/e_des.c	(revision 105093)
+++ openssl/crypto/evp/e_des.c	(working copy)
@@ -72,7 +72,7 @@
 /* Because of various casts and different names can't use IMPLEMENT_BLOCK_CIPHER */
 
 static int des_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
-			  const unsigned char *in, unsigned int inl)
+			  const unsigned char *in, size_t inl)
 {
 	BLOCK_CIPHER_ecb_loop()
 		DES_ecb_encrypt((DES_cblock *)(in + i), (DES_cblock *)(out + i), ctx->cipher_data, ctx->encrypt);
@@ -80,24 +80,52 @@
 }
 
 static int des_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
-			  const unsigned char *in, unsigned int inl)
+			  const unsigned char *in, size_t inl)
 {
-	DES_ofb64_encrypt(in, out, (long)inl, ctx->cipher_data, (DES_cblock *)ctx->iv, &ctx->num);
+	while(inl>=EVP_MAXCHUNK)
+		{
+		DES_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK, ctx->cipher_data,
+				(DES_cblock *)ctx->iv, &ctx->num);
+		inl-=EVP_MAXCHUNK;
+		in +=EVP_MAXCHUNK;
+		out+=EVP_MAXCHUNK;
+		}
+	if (inl)
+		DES_ofb64_encrypt(in, out, (long)inl, ctx->cipher_data,
+				(DES_cblock *)ctx->iv, &ctx->num);
 	return 1;
 }
 
 static int des_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
-			  const unsigned char *in, unsigned int inl)
+			  const unsigned char *in, size_t inl)
 {
-	DES_ncbc_encrypt(in, out, (long)inl, ctx->cipher_data,
-			 (DES_cblock *)ctx->iv, ctx->encrypt);
+	while(inl>=EVP_MAXCHUNK)
+		{
+		DES_ncbc_encrypt(in, out, (long)EVP_MAXCHUNK, ctx->cipher_data,
+				(DES_cblock *)ctx->iv, ctx->encrypt);
+		inl-=EVP_MAXCHUNK;
+		in +=EVP_MAXCHUNK;
+		out+=EVP_MAXCHUNK;
+		}
+	if (inl)
+		DES_ncbc_encrypt(in, out, (long)inl, ctx->cipher_data,
+				(DES_cblock *)ctx->iv, ctx->encrypt);
 	return 1;
 }
 
 static int des_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
-			    const unsigned char *in, unsigned int inl)
+			    const unsigned char *in, size_t inl)
 {
-	DES_cfb64_encrypt(in, out, (long)inl, ctx->cipher_data,
+	while(inl>=EVP_MAXCHUNK)
+		{
+		DES_cfb64_encrypt(in,out, (long)EVP_MAXCHUNK, ctx->cipher_data,
+				(DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
+		inl-=EVP_MAXCHUNK;
+		in +=EVP_MAXCHUNK;
+		out+=EVP_MAXCHUNK;
+		}
+	if (inl)
+		DES_cfb64_encrypt(in, out, (long)inl, ctx->cipher_data,
 			  (DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
 	return 1;
 }
@@ -105,45 +133,62 @@
 /* Although we have a CFB-r implementation for DES, it doesn't pack the right
    way, so wrap it here */
 static int des_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
-			   const unsigned char *in, unsigned int inl)
+			   const unsigned char *in, size_t inl)
     {
-    unsigned int n;
+    size_t n,chunk=EVP_MAXCHUNK/8;
     unsigned char c[1],d[1];
 
-    for(n=0 ; n < inl ; ++n)
+    if (inl<chunk) chunk=inl;
+
+    while (inl && inl>=chunk)
 	{
-	c[0]=(in[n/8]&(1 << (7-n%8))) ? 0x80 : 0;
-	DES_cfb_encrypt(c,d,1,1,ctx->cipher_data,(DES_cblock *)ctx->iv,
+	for(n=0 ; n < chunk*8; ++n)
+	    {
+	    c[0]=(in[n/8]&(1 << (7-n%8))) ? 0x80 : 0;
+	    DES_cfb_encrypt(c,d,1,1,ctx->cipher_data,(DES_cblock *)ctx->iv,
 			ctx->encrypt);
-	out[n/8]=(out[n/8]&~(0x80 >> (n%8)))|((d[0]&0x80) >> (n%8));
+	    out[n/8]=(out[n/8]&~(0x80 >> (unsigned int)(n%8))) |
+		     ((d[0]&0x80) >> (unsigned int)(n%8));
+	    }
+	inl-=chunk;
+	in +=chunk;
+	out+=chunk;
+	if (inl<chunk) chunk=inl;
 	}
+
     return 1;
     }
 
 static int des_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
-			   const unsigned char *in, unsigned int inl)
+			   const unsigned char *in, size_t inl)
     {
-    DES_cfb_encrypt(in,out,8,inl,ctx->cipher_data,(DES_cblock *)ctx->iv,
-		    ctx->encrypt);
+    while (inl>=EVP_MAXCHUNK)
+	{
+	DES_cfb_encrypt(in,out,8,(long)EVP_MAXCHUNK,ctx->cipher_data,
+			(DES_cblock *)ctx->iv,ctx->encrypt);
+	inl-=EVP_MAXCHUNK;
+	in +=EVP_MAXCHUNK;
+	out+=EVP_MAXCHUNK;
+	}
+    if (inl)
+	DES_cfb_encrypt(in,out,8,(long)inl,ctx->cipher_data,
+			(DES_cblock *)ctx->iv,ctx->encrypt);
     return 1;
     }
 
 BLOCK_CIPHER_defs(des, DES_key_schedule, NID_des, 8, 8, 8, 64,
-			EVP_CIPH_RAND_KEY,
-			des_init_key, NULL,
+			EVP_CIPH_RAND_KEY, des_init_key, NULL,
 			EVP_CIPHER_set_asn1_iv,
 			EVP_CIPHER_get_asn1_iv,
 			des_ctrl)
 
 BLOCK_CIPHER_def_cfb(des,DES_key_schedule,NID_des,8,8,1,
-		     EVP_CIPH_RAND_KEY,
-		     des_init_key, NULL,
+		     EVP_CIPH_RAND_KEY, des_init_key,NULL,
 		     EVP_CIPHER_set_asn1_iv,
 		     EVP_CIPHER_get_asn1_iv,des_ctrl)
 
 BLOCK_CIPHER_def_cfb(des,DES_key_schedule,NID_des,8,8,8,
-		     EVP_CIPH_RAND_KEY,
-		     des_init_key,NULL,
+		     EVP_CIPH_RAND_KEY,des_init_key,NULL,
 		     EVP_CIPHER_set_asn1_iv,
 		     EVP_CIPHER_get_asn1_iv,des_ctrl)