Redirect cipher operations to FIPS module for FIPS builds.
authorDr. Stephen Henson <steve@openssl.org>
Sun, 29 May 2011 16:18:38 +0000 (16:18 +0000)
committerDr. Stephen Henson <steve@openssl.org>
Sun, 29 May 2011 16:18:38 +0000 (16:18 +0000)
CHANGES
crypto/evp/evp_enc.c

diff --git a/CHANGES b/CHANGES
index 86b3fa9..fdf1d00 100644 (file)
--- a/CHANGES
+++ b/CHANGES
@@ -4,6 +4,9 @@
 
  Changes between 1.0.0d and 1.0.1  [xx XXX xxxx]
 
+  *) Redirect cipher operations to FIPS module for FIPS builds. 
+     [Steve Henson]
+
   *) Redirect digest operations to FIPS module for FIPS builds. 
      [Steve Henson]
 
index ccb4980..a816eb7 100644 (file)
 #endif
 #include "evp_locl.h"
 
+#ifdef OPENSSL_FIPS
+#define M_do_cipher(ctx, out, in, inl) FIPS_cipher(ctx, out, in, inl)
+#else
+#define M_do_cipher(ctx, out, in, inl) ctx->cipher->do_cipher(ctx, out, in, inl)
+#endif
+
+
 const char EVP_version[]="EVP" OPENSSL_VERSION_PTEXT;
 
 void EVP_CIPHER_CTX_init(EVP_CIPHER_CTX *ctx)
@@ -297,6 +304,16 @@ int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
        {
        int i,j,bl;
 
+       if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER)
+               {
+               i = M_do_cipher(ctx, out, in, inl);
+               if (i < 0)
+                       return 0;
+               else
+                       *outl = i;
+               return 1;
+               }
+
        if (inl <= 0)
                {
                *outl = 0;
@@ -305,7 +322,7 @@ int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
 
        if(ctx->buf_len == 0 && (inl&(ctx->block_mask)) == 0)
                {
-               if(ctx->cipher->do_cipher(ctx,out,in,inl))
+               if(M_do_cipher(ctx,out,in,inl))
                        {
                        *outl=inl;
                        return 1;
@@ -332,7 +349,7 @@ int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
                        {
                        j=bl-i;
                        memcpy(&(ctx->buf[i]),in,j);
-                       if(!ctx->cipher->do_cipher(ctx,out,ctx->buf,bl)) return 0;
+                       if(!M_do_cipher(ctx,out,ctx->buf,bl)) return 0;
                        inl-=j;
                        in+=j;
                        out+=bl;
@@ -345,7 +362,7 @@ int EVP_EncryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
        inl-=i;
        if (inl > 0)
                {
-               if(!ctx->cipher->do_cipher(ctx,out,in,inl)) return 0;
+               if(!M_do_cipher(ctx,out,in,inl)) return 0;
                *outl+=inl;
                }
 
@@ -367,6 +384,16 @@ int EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
        int n,ret;
        unsigned int i, b, bl;
 
+       if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER)
+               {
+               ret = M_do_cipher(ctx, out, NULL, 0);
+               if (ret < 0)
+                       return 0;
+               else 
+                       *outl = ret;
+               return 1;
+               }
+
        b=ctx->cipher->block_size;
        OPENSSL_assert(b <= sizeof ctx->buf);
        if (b == 1)
@@ -389,7 +416,7 @@ int EVP_EncryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
        n=b-bl;
        for (i=bl; i<b; i++)
                ctx->buf[i]=n;
-       ret=ctx->cipher->do_cipher(ctx,out,ctx->buf,b);
+       ret=M_do_cipher(ctx,out,ctx->buf,b);
 
 
        if(ret)
@@ -404,6 +431,19 @@ int EVP_DecryptUpdate(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl,
        int fix_len;
        unsigned int b;
 
+       if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER)
+               {
+               fix_len = M_do_cipher(ctx, out, in, inl);
+               if (fix_len < 0)
+                       {
+                       *outl = 0;
+                       return 0;
+                       }
+               else
+                       *outl = fix_len;
+               return 1;
+               }
+
        if (inl <= 0)
                {
                *outl = 0;
@@ -457,8 +497,18 @@ int EVP_DecryptFinal_ex(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
        {
        int i,n;
        unsigned int b;
-
        *outl=0;
+
+       if (ctx->cipher->flags & EVP_CIPH_FLAG_CUSTOM_CIPHER)
+               {
+               i = M_do_cipher(ctx, out, NULL, 0);
+               if (i < 0)
+                       return 0;
+               else
+                       *outl = i;
+               return 1;
+               }
+
        b=ctx->cipher->block_size;
        if (ctx->flags & EVP_CIPH_NO_PADDING)
                {
@@ -513,6 +563,7 @@ void EVP_CIPHER_CTX_free(EVP_CIPHER_CTX *ctx)
 
 int EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *c)
        {
+#ifndef OPENSSL_FIPS
        if (c->cipher != NULL)
                {
                if(c->cipher->cleanup && !c->cipher->cleanup(c))
@@ -523,11 +574,15 @@ int EVP_CIPHER_CTX_cleanup(EVP_CIPHER_CTX *c)
                }
        if (c->cipher_data)
                OPENSSL_free(c->cipher_data);
+#endif
 #ifndef OPENSSL_NO_ENGINE
        if (c->engine)
                /* The EVP_CIPHER we used belongs to an ENGINE, release the
                 * functional reference we held for this reason. */
                ENGINE_finish(c->engine);
+#endif
+#ifdef OPENSSL_FIPS
+       FIPS_cipher_ctx_cleanup(c);
 #endif
        memset(c,0,sizeof(EVP_CIPHER_CTX));
        return 1;