size_t-fy EVP_CIPHER. Note that being size_t-fied it doesn't require

underlying cipher to be size_t-fied, it allows for size_t, signed and
unsigned long. It maintains source and even binary compatibility.

crypto/evp/e_des.c

@@ -72,7 +72,7 @@ static int des_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr);
 /* 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_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 }
 
 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,
+	while(inl>=EVP_MAXCHUNK)
-			 (DES_cblock *)ctx->iv, ctx->encrypt);
+		{
+		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;
 }
@@ -105,26 +133,45 @@ static int des_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 /* 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 * 8; ++n)
+    if (inl<chunk) chunk=inl;
+
+    while (inl && inl>=chunk)
 	{
-	c[0]=(in[n/8]&(1 << (7-n%8))) ? 0x80 : 0;
+	for(n=0 ; n < chunk*8; ++n)
-	DES_cfb_encrypt(c,d,1,1,ctx->cipher_data,(DES_cblock *)ctx->iv,
+	    {
+	    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 >> (n%8)))|((d[0]&0x80) >> (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,
+    while (inl>=EVP_MAXCHUNK)
-		    ctx->encrypt);
+	{
+	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;
     }
 

crypto/evp/e_des3.c

@@ -85,7 +85,7 @@ typedef struct
 /* Because of various casts and different args can't use IMPLEMENT_BLOCK_CIPHER */
 
 static int des_ede_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_ecb3_encrypt((const_DES_cblock *)(in + i),
@@ -97,16 +97,27 @@ static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 }
 
 static int des_ede_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
-			      const unsigned char *in, unsigned int inl)
+			      const unsigned char *in, size_t inl)
 {
-	DES_ede3_ofb64_encrypt(in, out, (long)inl,
+	if (inl>=EVP_MAXCHUNK)
+		{
+		DES_ede3_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK,
 			       &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
 			       (DES_cblock *)ctx->iv, &ctx->num);
+		inl-=EVP_MAXCHUNK;
+		in +=EVP_MAXCHUNK;
+		out+=EVP_MAXCHUNK;
+		}
+	if (inl)
+		DES_ede3_ofb64_encrypt(in, out, (long)inl,
+				&data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
+                               (DES_cblock *)ctx->iv, &ctx->num);
+
 	return 1;
 }
 
 static int des_ede_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
-			      const unsigned char *in, unsigned int inl)
+			      const unsigned char *in, size_t inl)
 {
 #ifdef KSSL_DEBUG
 	{
@@ -119,27 +130,47 @@ static int des_ede_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
 	printf("\n");
 	}
 #endif    /* KSSL_DEBUG */
-	DES_ede3_cbc_encrypt(in, out, (long)inl,
+	if (inl>=EVP_MAXCHUNK)
+		{
+		DES_ede3_cbc_encrypt(in, out, (long)EVP_MAXCHUNK,
 			     &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
 			     (DES_cblock *)ctx->iv, ctx->encrypt);
+		inl-=EVP_MAXCHUNK;
+		in +=EVP_MAXCHUNK;
+		out+=EVP_MAXCHUNK;
+		}
+	if (inl)
+		DES_ede3_cbc_encrypt(in, out, (long)inl,
+			     &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
+                             (DES_cblock *)ctx->iv, ctx->encrypt);
 	return 1;
 }
 
 static int des_ede_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
-			      const unsigned char *in, unsigned int inl)
+			      const unsigned char *in, size_t inl)
 {
-	DES_ede3_cfb64_encrypt(in, out, (long)inl, 
+	if (inl>=EVP_MAXCHUNK)
+		{
+		DES_ede3_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK, 
 			       &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
 			       (DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
+		inl-=EVP_MAXCHUNK;
+		in +=EVP_MAXCHUNK;
+		out+=EVP_MAXCHUNK;
+		}
+	if (inl)
+		DES_ede3_cfb64_encrypt(in, out, (long)inl,
+			       &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3,
+                               (DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt);
 	return 1;
 }
 
 /* Although we have a CFB-r implementation for 3-DES, it doesn't pack the right
    way, so wrap it here */
 static int des_ede3_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;
     unsigned char c[1],d[1];
 
     for(n=0 ; n < inl ; ++n)
@@ -155,11 +186,21 @@ static int des_ede3_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
     }
 
 static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
-				const unsigned char *in, unsigned int inl)
+				const unsigned char *in, size_t inl)
     {
-    DES_ede3_cfb_encrypt(in,out,8,inl,
+    while (inl>=EVP_MAXCHUNK)
+	{
+	DES_ede3_cfb_encrypt(in,out,8,(long)EVP_MAXCHUNK,
 			 &data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
 			 (DES_cblock *)ctx->iv,ctx->encrypt);
+	inl-=EVP_MAXCHUNK;
+	in +=EVP_MAXCHUNK;
+	out+=EVP_MAXCHUNK;
+	}
+    if (inl)
+	DES_ede3_cfb_encrypt(in,out,8,(long)inl,
+			&data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3,
+			(DES_cblock *)ctx->iv,ctx->encrypt);
     return 1;
     }
 

crypto/evp/e_idea.c

@@ -73,7 +73,7 @@ static int idea_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
  */
 
 static int idea_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()
 		idea_ecb_encrypt(in + i, out + i, ctx->cipher_data);

crypto/evp/e_null.c

@@ -64,7 +64,7 @@
 static int null_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 	const unsigned char *iv,int enc);
 static int null_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
-	const unsigned char *in, unsigned int inl);
+	const unsigned char *in, size_t inl);
 static const EVP_CIPHER n_cipher=
 	{
 	NID_undef,
@@ -93,10 +93,10 @@ static int null_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 	}
 
 static int null_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
-	     const unsigned char *in, unsigned int inl)
+	     const unsigned char *in, size_t inl)
 	{
 	if (in != out)
-		memcpy((char *)out,(const char *)in,(size_t)inl);
+		memcpy((char *)out,(const char *)in,inl);
 	return 1;
 	}
 

crypto/evp/e_rc4.c

@@ -78,7 +78,7 @@ typedef struct
 static int rc4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 			const unsigned char *iv,int enc);
 static int rc4_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
-		      const unsigned char *in, unsigned int inl);
+		      const unsigned char *in, size_t inl);
 static const EVP_CIPHER r4_cipher=
 	{
 	NID_rc4,
@@ -128,7 +128,7 @@ static int rc4_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 	}
 
 static int rc4_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
-		      const unsigned char *in, unsigned int inl)
+		      const unsigned char *in, size_t inl)
 	{
 	RC4(&data(ctx)->ks,inl,in,out);
 	return 1;

crypto/evp/e_xcbc_d.c

@@ -63,12 +63,13 @@
 
 #include <openssl/evp.h>
 #include <openssl/objects.h>
+#include "evp_locl.h"
 #include <openssl/des.h>
 
 static int desx_cbc_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 			     const unsigned char *iv,int enc);
 static int desx_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
-			   const unsigned char *in, unsigned int inl);
+			   const unsigned char *in, size_t inl);
 
 
 typedef struct
@@ -113,13 +114,25 @@ static int desx_cbc_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 	}
 
 static int desx_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
-			   const unsigned char *in, unsigned int inl)
+			   const unsigned char *in, size_t inl)
 	{
-	DES_xcbc_encrypt(in,out,inl,&data(ctx)->ks,
+	while (inl>=EVP_MAXCHUNK)
+		{
+		DES_xcbc_encrypt(in,out,(long)EVP_MAXCHUNK,&data(ctx)->ks,
 			 (DES_cblock *)&(ctx->iv[0]),
 			 &data(ctx)->inw,
 			 &data(ctx)->outw,
 			 ctx->encrypt);
+		inl-=EVP_MAXCHUNK;
+		in +=EVP_MAXCHUNK;
+		out+=EVP_MAXCHUNK;
+		}
+	if (inl)
+		DES_xcbc_encrypt(in,out,(long)inl,&data(ctx)->ks,
+			(DES_cblock *)&(ctx->iv[0]),
+			&data(ctx)->inw,
+			&data(ctx)->outw,
+			ctx->encrypt);
 	return 1;
 	}
 #endif

crypto/evp/evp.h

@@ -299,7 +299,7 @@ struct evp_cipher_st
 	int (*init)(EVP_CIPHER_CTX *ctx, const unsigned char *key,
 		    const unsigned char *iv, int enc);	/* init key */
 	int (*do_cipher)(EVP_CIPHER_CTX *ctx, unsigned char *out,
-			 const unsigned char *in, unsigned int inl);/* encrypt/decrypt data */
+			 const unsigned char *in, size_t inl);/* encrypt/decrypt data */
 	int (*cleanup)(EVP_CIPHER_CTX *); /* cleanup ctx */
 	int ctx_size;		/* how big ctx->cipher_data needs to be */
 	int (*set_asn1_parameters)(EVP_CIPHER_CTX *, ASN1_TYPE *); /* Populate a ASN1_TYPE with parameters */

crypto/evp/evp_locl.h

@@ -61,38 +61,66 @@
 /* Wrapper functions for each cipher mode */
 
 #define BLOCK_CIPHER_ecb_loop() \
-	unsigned int i, bl; \
+	size_t i, bl; \
 	bl = ctx->cipher->block_size;\
 	if(inl < bl) return 1;\
 	inl -= bl; \
 	for(i=0; i <= inl; i+=bl) 
 
 #define BLOCK_CIPHER_func_ecb(cname, cprefix, kstruct, ksched) \
-static int cname##_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, unsigned int inl) \
+static int cname##_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 {\
 	BLOCK_CIPHER_ecb_loop() \
 		cprefix##_ecb_encrypt(in + i, out + i, &((kstruct *)ctx->cipher_data)->ksched, ctx->encrypt);\
 	return 1;\
 }
 
+#define EVP_MAXCHUNK ((size_t)1<<(sizeof(long)*8-2))
+
 #define BLOCK_CIPHER_func_ofb(cname, cprefix, cbits, kstruct, ksched) \
-static int cname##_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, unsigned int inl) \
+static int cname##_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 {\
-	cprefix##_ofb##cbits##_encrypt(in, out, (long)inl, &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, &ctx->num);\
+	while(inl>=EVP_MAXCHUNK)\
+	    {\
+	    cprefix##_ofb##cbits##_encrypt(in, out, (long)EVP_MAXCHUNK, &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, &ctx->num);\
+	    inl-=EVP_MAXCHUNK;\
+	    in +=EVP_MAXCHUNK;\
+	    out+=EVP_MAXCHUNK;\
+	    }\
+	if (inl)\
+	    cprefix##_ofb##cbits##_encrypt(in, out, (long)inl, &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, &ctx->num);\
 	return 1;\
 }
 
 #define BLOCK_CIPHER_func_cbc(cname, cprefix, kstruct, ksched) \
-static int cname##_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, unsigned int inl) \
+static int cname##_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 {\
-	cprefix##_cbc_encrypt(in, out, (long)inl, &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, ctx->encrypt);\
+	while(inl>=EVP_MAXCHUNK) \
+	    {\
+	    cprefix##_cbc_encrypt(in, out, (long)EVP_MAXCHUNK, &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, ctx->encrypt);\
+	    inl-=EVP_MAXCHUNK;\
+	    in +=EVP_MAXCHUNK;\
+	    out+=EVP_MAXCHUNK;\
+	    }\
+	if (inl)\
+	    cprefix##_cbc_encrypt(in, out, (long)inl, &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, ctx->encrypt);\
 	return 1;\
 }
 
 #define BLOCK_CIPHER_func_cfb(cname, cprefix, cbits, kstruct, ksched) \
-static int cname##_cfb##cbits##_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, unsigned int inl) \
+static int cname##_cfb##cbits##_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in, size_t inl) \
 {\
-	cprefix##_cfb##cbits##_encrypt(in, out, (long)(cbits==1?inl*8:inl), &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, &ctx->num, ctx->encrypt);\
+	size_t chunk=EVP_MAXCHUNK;\
+	if (cbits==1)  chunk>>=3;\
+	if (inl<chunk) chunk=inl;\
+	while(inl && inl>=chunk)\
+	    {\
+	    cprefix##_cfb##cbits##_encrypt(in, out, (long)(cbits==1?chunk*8:chunk), &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, &ctx->num, ctx->encrypt);\
+	    inl-=chunk;\
+	    in +=chunk;\
+	    out+=chunk;\
+	    if(inl<chunk) chunk=inl;\
+	    }\
 	return 1;\
 }