5 files changed, 30 insertions, 13 deletions
diff --git a/src/lib/pk_pad/eme_oaep/oaep.cpp b/src/lib/pk_pad/eme_oaep/oaep.cpp
index 0ae0d8554..1ae1068a7 100644
--- a/src/lib/pk_pad/eme_oaep/oaep.cpp
+++ b/src/lib/pk_pad/eme_oaep/oaep.cpp
@@ -35,8 +35,10 @@ secure_vector<byte> OAEP::pad(const byte in[], size_t in_length,
    {
    key_length /= 8;
 
-   if(key_length < in_length + 2*m_Phash.size() + 1)
+   if(in_length > maximum_input_size(key_length * 8))
+      {
       throw Invalid_Argument("OAEP: Input is too large");
+      }
 
    secure_vector<byte> out(key_length);
 
diff --git a/src/lib/pk_pad/eme_pkcs1/eme_pkcs.cpp b/src/lib/pk_pad/eme_pkcs1/eme_pkcs.cpp
index 8148b7bc9..9bab8eb95 100644
--- a/src/lib/pk_pad/eme_pkcs1/eme_pkcs.cpp
+++ b/src/lib/pk_pad/eme_pkcs1/eme_pkcs.cpp
@@ -14,22 +14,22 @@ namespace Botan {
 * PKCS1 Pad Operation
 */
 secure_vector<byte> EME_PKCS1v15::pad(const byte in[], size_t inlen,
-                                     size_t olen,
+                                     size_t key_length,
                                      RandomNumberGenerator& rng) const
    {
-   olen /= 8;
+   key_length /= 8;
 
-   if(olen < 10)
-      throw Encoding_Error("PKCS1: Output space too small");
-   if(inlen > olen - 10)
-      throw Encoding_Error("PKCS1: Input is too large");
+   if(inlen > maximum_input_size(key_length * 8))
+      {
+      throw Invalid_Argument("PKCS1: Input is too large");
+      }
 
-   secure_vector<byte> out(olen);
+   secure_vector<byte> out(key_length);
 
    out[0] = 0x02;
-   rng.randomize(out.data() + 1, (olen - inlen - 2));
+   rng.randomize(out.data() + 1, (key_length - inlen - 2));
 
-   for(size_t j = 1; j != olen - inlen - 1; ++j)
+   for(size_t j = 1; j != key_length - inlen - 1; ++j)
       {
       if(out[j] == 0)
          {
@@ -37,7 +37,7 @@ secure_vector<byte> EME_PKCS1v15::pad(const byte in[], size_t inlen,
          }
       }
 
-   buffer_insert(out, olen - inlen, in, inlen);
+   buffer_insert(out, key_length - inlen, in, inlen);
 
    return out;
    }
diff --git a/src/lib/pk_pad/hash_id/hash_id.cpp b/src/lib/pk_pad/hash_id/hash_id.cpp
index 28bbea346..882c30a4c 100644
--- a/src/lib/pk_pad/hash_id/hash_id.cpp
+++ b/src/lib/pk_pad/hash_id/hash_id.cpp
@@ -48,6 +48,10 @@ const byte SHA_512_PKCS_ID[] = {
 0x30, 0x51, 0x30, 0x0D, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01,
 0x65, 0x03, 0x04, 0x02, 0x03, 0x05, 0x00, 0x04, 0x40 };
 
+const byte SHA_512_256_PKCS_ID[] = {
+0x30, 0x31, 0x30, 0x0D, 0x06, 0x09, 0x60, 0x86, 0x48, 0x01,
+0x65, 0x03, 0x04, 0x02, 0x06, 0x05, 0x00, 0x04, 0x20 };
+
 const byte TIGER_PKCS_ID[] = {
 0x30, 0x29, 0x30, 0x0D, 0x06, 0x09, 0x2B, 0x06, 0x01, 0x04,
 0x01, 0xDA, 0x47, 0x0C, 0x02, 0x05, 0x00, 0x04, 0x18 };
@@ -99,6 +103,10 @@ std::vector<byte> pkcs_hash_id(const std::string& name)
       return std::vector<byte>(SHA_512_PKCS_ID,
                                SHA_512_PKCS_ID + sizeof(SHA_512_PKCS_ID));
 
+   if(name == "SHA-512-256")
+      return std::vector<byte>(SHA_512_256_PKCS_ID,
+                               SHA_512_256_PKCS_ID + sizeof(SHA_512_256_PKCS_ID));
+
    if(name == "Tiger(24,3)")
       return std::vector<byte>(TIGER_PKCS_ID,
                                TIGER_PKCS_ID + sizeof(TIGER_PKCS_ID));
diff --git a/src/lib/pubkey/dh/dh.cpp b/src/lib/pubkey/dh/dh.cpp
index 9eb4e5cd0..8ed79aa3d 100644
--- a/src/lib/pubkey/dh/dh.cpp
+++ b/src/lib/pubkey/dh/dh.cpp
@@ -37,6 +37,7 @@ DH_PrivateKey::DH_PrivateKey(RandomNumberGenerator& rng,
                              const DL_Group& grp,
                              const BigInt& x_arg)
    {
+   const bool generate = (x_arg == 0) ? true : false;
    m_group = grp;
    m_x = x_arg;
 
@@ -47,12 +48,18 @@ DH_PrivateKey::DH_PrivateKey(RandomNumberGenerator& rng,
       }
 
    if(m_y == 0)
+      {
       m_y = power_mod(group_g(), m_x, group_p());
+      }
 
-   if(m_x == 0)
+   if(generate)
+      {
       gen_check(rng);
+      }
    else
+      {
       load_check(rng);
+      }
    }
 
 /*
diff --git a/src/lib/utils/simd/simd_32.h b/src/lib/utils/simd/simd_32.h
index 351146f22..0b4ca8f03 100644
--- a/src/lib/utils/simd/simd_32.h
+++ b/src/lib/utils/simd/simd_32.h
@@ -12,7 +12,7 @@
 #include <botan/loadstor.h>
 #include <botan/bswap.h>
 
-#if defined(BOTAN_TARGET_SUPPORTS_SSE2) && 0
+#if defined(BOTAN_TARGET_SUPPORTS_SSE2)
   #include <emmintrin.h>
   #define BOTAN_SIMD_USE_SSE2