1 files changed, 170 insertions, 0 deletions
diff --git a/src/libs/3rdparty/botan/src/lib/pk_pad/emsa_pkcs1/emsa_pkcs1.cpp b/src/libs/3rdparty/botan/src/lib/pk_pad/emsa_pkcs1/emsa_pkcs1.cpp
new file mode 100644
index 0000000000..ddc1e6b279
--- /dev/null
+++ b/src/libs/3rdparty/botan/src/lib/pk_pad/emsa_pkcs1/emsa_pkcs1.cpp
@@ -0,0 +1,170 @@
+/*
+* PKCS #1 v1.5 signature padding
+* (C) 1999-2008 Jack Lloyd
+*
+* Botan is released under the Simplified BSD License (see license.txt)
+*/
+
+#include <botan/emsa_pkcs1.h>
+#include <botan/hash_id.h>
+#include <botan/exceptn.h>
+#include <botan/oids.h>
+#include <botan/pk_keys.h>
+#include <botan/internal/padding.h>
+
+namespace Botan {
+
+namespace {
+
+secure_vector<uint8_t> emsa3_encoding(const secure_vector<uint8_t>& msg,
+                                   size_t output_bits,
+                                   const uint8_t hash_id[],
+                                   size_t hash_id_length)
+   {
+   size_t output_length = output_bits / 8;
+   if(output_length < hash_id_length + msg.size() + 10)
+      throw Encoding_Error("emsa3_encoding: Output length is too small");
+
+   secure_vector<uint8_t> T(output_length);
+   const size_t P_LENGTH = output_length - msg.size() - hash_id_length - 2;
+
+   T[0] = 0x01;
+   set_mem(&T[1], P_LENGTH, 0xFF);
+   T[P_LENGTH+1] = 0x00;
+
+   if(hash_id_length > 0)
+      {
+      BOTAN_ASSERT_NONNULL(hash_id);
+      buffer_insert(T, P_LENGTH+2, hash_id, hash_id_length);
+      }
+
+   buffer_insert(T, output_length-msg.size(), msg.data(), msg.size());
+   return T;
+   }
+
+}
+
+void EMSA_PKCS1v15::update(const uint8_t input[], size_t length)
+   {
+   m_hash->update(input, length);
+   }
+
+secure_vector<uint8_t> EMSA_PKCS1v15::raw_data()
+   {
+   return m_hash->final();
+   }
+
+secure_vector<uint8_t>
+EMSA_PKCS1v15::encoding_of(const secure_vector<uint8_t>& msg,
+                           size_t output_bits,
+                           RandomNumberGenerator&)
+   {
+   if(msg.size() != m_hash->output_length())
+      throw Encoding_Error("EMSA_PKCS1v15::encoding_of: Bad input length");
+
+   return emsa3_encoding(msg, output_bits,
+                         m_hash_id.data(), m_hash_id.size());
+   }
+
+bool EMSA_PKCS1v15::verify(const secure_vector<uint8_t>& coded,
+                           const secure_vector<uint8_t>& raw,
+                           size_t key_bits)
+   {
+   if(raw.size() != m_hash->output_length())
+      return false;
+
+   try
+      {
+      return (coded == emsa3_encoding(raw, key_bits,
+                                      m_hash_id.data(), m_hash_id.size()));
+      }
+   catch(...)
+      {
+      return false;
+      }
+   }
+
+AlgorithmIdentifier EMSA_PKCS1v15::config_for_x509(const Private_Key& key,
+                                    const std::string& cert_hash_name) const
+   {
+   if(cert_hash_name != m_hash->name())
+      throw Invalid_Argument("Hash function from opts and hash_fn argument"
+         " need to be identical");
+   // check that the signature algorithm and the padding scheme fit
+   if(!sig_algo_and_pad_ok(key.algo_name(), "EMSA3"))
+      {
+      throw Invalid_Argument("Encoding scheme with canonical name EMSA3"
+         " not supported for signature algorithm " + key.algo_name());
+      }
+
+
+   AlgorithmIdentifier sig_algo;
+   sig_algo.oid = OIDS::lookup( key.algo_name() + "/" + name() );
+   // for RSA PKCSv1.5 parameters "SHALL" be NULL as configured by
+   // RSA_PublicKey::algorithm_identifier()
+   sig_algo.parameters = key.algorithm_identifier().parameters;
+   return sig_algo;
+   }
+
+EMSA_PKCS1v15::EMSA_PKCS1v15(HashFunction* hash) : m_hash(hash)
+   {
+   m_hash_id = pkcs_hash_id(m_hash->name());
+   }
+
+EMSA_PKCS1v15_Raw::EMSA_PKCS1v15_Raw(const std::string& hash_algo)
+   {
+   if(!hash_algo.empty())
+      {
+      m_hash_id = pkcs_hash_id(hash_algo);
+      std::unique_ptr<HashFunction> hash(HashFunction::create_or_throw(hash_algo));
+      m_hash_name = hash->name();
+      m_hash_output_len = hash->output_length();
+      }
+   else
+      {
+      m_hash_output_len = 0;
+      }
+   }
+
+void EMSA_PKCS1v15_Raw::update(const uint8_t input[], size_t length)
+   {
+   m_message += std::make_pair(input, length);
+   }
+
+secure_vector<uint8_t> EMSA_PKCS1v15_Raw::raw_data()
+   {
+   secure_vector<uint8_t> ret;
+   std::swap(ret, m_message);
+
+   if(m_hash_output_len > 0 && ret.size() != m_hash_output_len)
+      throw Encoding_Error("EMSA_PKCS1v15_Raw::encoding_of: Bad input length");
+
+   return ret;
+   }
+
+secure_vector<uint8_t>
+EMSA_PKCS1v15_Raw::encoding_of(const secure_vector<uint8_t>& msg,
+                               size_t output_bits,
+                               RandomNumberGenerator&)
+   {
+   return emsa3_encoding(msg, output_bits, m_hash_id.data(), m_hash_id.size());
+   }
+
+bool EMSA_PKCS1v15_Raw::verify(const secure_vector<uint8_t>& coded,
+                               const secure_vector<uint8_t>& raw,
+                               size_t key_bits)
+   {
+   if(m_hash_output_len > 0 && raw.size() != m_hash_output_len)
+      return false;
+
+   try
+      {
+      return (coded == emsa3_encoding(raw, key_bits, m_hash_id.data(), m_hash_id.size()));
+      }
+   catch(...)
+      {
+      return false;
+      }
+   }
+
+}