Merge pull request #5012 from julek-wolfssl/evp-enc-dec-block

Implement `EVP_EncodeBlock` and `EVP_DecodeBlock`

tests/api.c

@@ -3768,6 +3768,8 @@ static void test_wolfSSL_EVP_EncodeUpdate(void)
         0                    /* expected result code 0: fail */
     );
 
+    AssertIntEQ(EVP_EncodeBlock(NULL, NULL, 0), -1);
+
     /* meaningless parameter test */
 
     AssertIntEQ(
@@ -3807,6 +3809,15 @@ static void test_wolfSSL_EVP_EncodeUpdate(void)
             (const char*)enc0,sizeof(enc0) ),
     0);
 
+    XMEMSET( encOutBuff,0, sizeof(encOutBuff));
+    AssertIntEQ(EVP_EncodeBlock(encOutBuff, plain0, sizeof(plain0)-1),
+                sizeof(enc0)-1);
+    AssertIntEQ(
+        XSTRNCMP(
+            (const char*)encOutBuff,
+            (const char*)enc0,sizeof(enc0) ),
+    0);
+
     /* pass small size( < 48bytes ) input, then make sure they are not
      * encoded  and just stored in ctx
      */
@@ -3986,6 +3997,8 @@ static void test_wolfSSL_EVP_DecodeUpdate(void)
     );
     AssertIntEQ( outl, 0);
 
+    AssertIntEQ(EVP_DecodeBlock(NULL, NULL, 0), -1);
+
     /* pass zero length input */
 
     AssertIntEQ(
@@ -4031,6 +4044,11 @@ static void test_wolfSSL_EVP_DecodeUpdate(void)
     AssertIntEQ(XSTRNCMP( (const char*)plain2,(const char*)decOutBuff,
                 sizeof(plain2) -1 ),0);
 
+    AssertIntEQ(EVP_DecodeBlock(decOutBuff, enc2, sizeof(enc2)),
+                sizeof(plain2)-1);
+    AssertIntEQ(XSTRNCMP( (const char*)plain2,(const char*)decOutBuff,
+                sizeof(plain2) -1 ),0);
+
     /* decode correct base64 string which does not have '\n' in its last*/
 
         const unsigned char enc3[]   =
@@ -4065,6 +4083,11 @@ static void test_wolfSSL_EVP_DecodeUpdate(void)
 
     AssertIntEQ(outl,0 );
 
+    AssertIntEQ(EVP_DecodeBlock(decOutBuff, enc3, sizeof(enc3)-1),
+                sizeof(plain3)-1);
+    AssertIntEQ(XSTRNCMP( (const char*)plain2,(const char*)decOutBuff,
+                sizeof(plain3) -1 ),0);
+
     /* decode string which has a padding char ('=') in the illegal position*/
 
         const unsigned char enc4[]   =
@@ -4084,6 +4107,8 @@ static void test_wolfSSL_EVP_DecodeUpdate(void)
     );
     AssertIntEQ(outl,0);
 
+    AssertIntEQ(EVP_DecodeBlock(decOutBuff, enc4, sizeof(enc4)-1), -1);
+
     /* small data decode test */
 
     const unsigned char enc00[]   = {"VG"};

wolfcrypt/src/evp.c

@@ -9225,6 +9225,40 @@ void wolfSSL_EVP_ENCODE_CTX_free(WOLFSSL_EVP_ENCODE_CTX* ctx)
 }
 #endif /* WOLFSSL_BASE64_ENCODE || WOLFSSL_BASE64_DECODE */
 #if defined(WOLFSSL_BASE64_ENCODE)
+
+/* Assume that out has enough space */
+int wolfSSL_EVP_EncodeBlock(unsigned char *out, const unsigned char *in,
+                            int inLen)
+{
+    word32 ret = (word32)-1;
+    WOLFSSL_ENTER("wolfSSL_EVP_EncodeBlock");
+
+    if (out == NULL || in == NULL)
+        return WOLFSSL_FATAL_ERROR;
+
+    if (Base64_Encode(in, inLen, out, &ret) == 0)
+        return (int)ret;
+    else
+        return WOLFSSL_FATAL_ERROR;
+}
+
+/* Assume that out has enough space */
+int wolfSSL_EVP_DecodeBlock(unsigned char *out, const unsigned char *in,
+                            int inLen)
+{
+    word32 ret = (word32)-1;
+    WOLFSSL_ENTER("wolfSSL_EVP_DecodeBlock");
+
+    if (out == NULL || in == NULL)
+        return WOLFSSL_FATAL_ERROR;
+
+    if (Base64_Decode(in, inLen, out, &ret) == 0)
+        return (int)ret;
+    else
+        return WOLFSSL_FATAL_ERROR;
+
+}
+
 /*  wolfSSL_EVP_EncodeInit initializes specified WOLFSSL_EVP_ENCODE_CTX object
  *  for the subsequent wolfSSL_EVP_EncodeUpdate.
  */

wolfssl/openssl/evp.h

@@ -456,6 +456,10 @@ WOLFSSL_API int  wolfSSL_EVP_EncodeUpdate(WOLFSSL_EVP_ENCODE_CTX* ctx,
                  unsigned char*out, int *outl, const unsigned char*in, int inl);
 WOLFSSL_API void wolfSSL_EVP_EncodeFinal(WOLFSSL_EVP_ENCODE_CTX* ctx,
                  unsigned char*out, int *outl);
+WOLFSSL_API int wolfSSL_EVP_EncodeBlock(unsigned char *out,
+                const unsigned char *in, int inLen);
+WOLFSSL_API int wolfSSL_EVP_DecodeBlock(unsigned char *out,
+                const unsigned char *in, int inLen);
 #endif /* WOLFSSL_BASE64_ENCODE */
 
 #if defined(WOLFSSL_BASE64_DECODE)
@@ -1086,6 +1090,8 @@ WOLFSSL_API int wolfSSL_EVP_SignInit_ex(WOLFSSL_EVP_MD_CTX* ctx,
 #define EVP_EncodeInit       wolfSSL_EVP_EncodeInit
 #define EVP_EncodeUpdate     wolfSSL_EVP_EncodeUpdate
 #define EVP_EncodeFinal      wolfSSL_EVP_EncodeFinal
+#define EVP_EncodeBlock      wolfSSL_EVP_EncodeBlock
+#define EVP_DecodeBlock      wolfSSL_EVP_DecodeBlock
 #endif /* WOLFSSL_BASE64_ENCODE */
 #if defined(WOLFSSL_BASE64_DECODE)
 #define EVP_DecodeInit       wolfSSL_EVP_DecodeInit