Revert CFB block length change. Despite what SP800-38a says the input to

[openssl.git] / crypto / evp / evp_locl.h

diff --git a/crypto/evp/evp_locl.h b/crypto/evp/evp_locl.h
index 0ce0124908813a3e2baa6ff8e77a8449f5fb6753..292d74c188081f83ac63d3cd4fc15be42f83e512 100644 (file)
--- a/crypto/evp/evp_locl.h
+++ b/crypto/evp/evp_locl.h
@@ -1,5 +1,5 @@
 /* evp_locl.h */
-/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
+/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
  * project 2000.
  */
 /* ====================================================================
@@ -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) && !(ctx->flags & EVP_CIPH_FLAG_LENGTH_BITS) ?inl*8:inl), &((kstruct *)ctx->cipher_data)->ksched, ctx->iv, &ctx->num, ctx->encrypt);\
+           inl-=chunk;\
+           in +=chunk;\
+           out+=chunk;\
+           if(inl<chunk) chunk=inl;\
+           }\
        return 1;\
 }
 
@@ -139,10 +167,10 @@ BLOCK_CIPHER_def1(cname, ofb##cbits, ofb, OFB, kstruct, nid, 1, \
                  get_asn1, ctrl)
 
 #define BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, \
-                            iv_len, flags, init_key, cleanup, set_asn1, \
+                            flags, init_key, cleanup, set_asn1, \
                             get_asn1, ctrl) \
 BLOCK_CIPHER_def1(cname, ecb, ecb, ECB, kstruct, nid, block_size, key_len, \
-                 iv_len, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
+                 0, flags, init_key, cleanup, set_asn1, get_asn1, ctrl)
 
 #define BLOCK_CIPHER_defs(cname, kstruct, \
                          nid, block_size, key_len, iv_len, cbits, flags, \
@@ -153,7 +181,7 @@ BLOCK_CIPHER_def_cfb(cname, kstruct, nid, key_len, iv_len, cbits, \
                     flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
 BLOCK_CIPHER_def_ofb(cname, kstruct, nid, key_len, iv_len, cbits, \
                     flags, init_key, cleanup, set_asn1, get_asn1, ctrl) \
-BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, iv_len, flags, \
+BLOCK_CIPHER_def_ecb(cname, kstruct, nid, block_size, key_len, flags, \
                     init_key, cleanup, set_asn1, get_asn1, ctrl)