5 files changed, 43 insertions, 11 deletions
diff --git a/src/math/bigint/bigint.cpp b/src/math/bigint/bigint.cpp
index 09ac2a75d..b92cd359e 100644
--- a/src/math/bigint/bigint.cpp
+++ b/src/math/bigint/bigint.cpp
@@ -40,7 +40,7 @@ BigInt::BigInt(Sign s, u32bit size)
    }
 
 /*
-* Construct a BigInt from a "raw" BigInt
+* Copy constructor
 */
 BigInt::BigInt(const BigInt& b)
    {
@@ -100,6 +100,25 @@ BigInt::BigInt(RandomNumberGenerator& rng, u32bit bits)
    randomize(rng, bits);
    }
 
+/**
+* Move constructor
+*/
+BigInt::BigInt(BigInt&& other)
+   {
+   std::swap(*this, other);
+   }
+
+/**
+* Move assignment
+*/
+BigInt& BigInt::operator=(BigInt&& other)
+   {
+   if(this != &other)
+      std::swap(*this, other);
+
+   return (*this);
+   }
+
 /*
 * Swap this BigInt with another
 */
diff --git a/src/math/bigint/bigint.h b/src/math/bigint/bigint.h
index 55ccf7aae..2612850c3 100644
--- a/src/math/bigint/bigint.h
+++ b/src/math/bigint/bigint.h
@@ -425,10 +425,14 @@ class BOTAN_DLL BigInt
      BigInt(u64bit n);
 
      /**
-     * Copy-Constructor: clone given BigInt
-     * @param bigint the BigInt to clone
+     * Copy constructor
      */
-     BigInt(const BigInt& bigint);
+     BigInt(const BigInt& other);
+
+     /**
+     * Assignment operator
+     */
+     BigInt& operator=(const BigInt&) = default;
 
      /**
      * Create BigInt from a string.
@@ -471,6 +475,15 @@ class BOTAN_DLL BigInt
      */
      BigInt(NumberType type, u32bit n);
 
+     /**
+     * Move constructor
+     */
+     BigInt(BigInt&& other);
+
+     /**
+     * Move assignment
+     */
+     BigInt& operator=(BigInt&& other);
    private:
       SecureVector<word> reg;
       Sign signedness;
diff --git a/src/math/numbertheory/dsa_gen.cpp b/src/math/numbertheory/dsa_gen.cpp
index 83646e50e..39a7cf5fa 100644
--- a/src/math/numbertheory/dsa_gen.cpp
+++ b/src/math/numbertheory/dsa_gen.cpp
@@ -47,15 +47,15 @@ bool generate_dsa_primes(RandomNumberGenerator& rng,
    if(!fips186_3_valid_size(pbits, qbits))
       throw Invalid_Argument(
          "FIPS 186-3 does not allow DSA domain parameters of " +
-         to_string(pbits) + "/" + to_string(qbits) + " bits long");
+         std::to_string(pbits) + "/" + std::to_string(qbits) + " bits long");
 
    if(seed_c.size() * 8 < qbits)
       throw Invalid_Argument(
-         "Generating a DSA parameter set with a " + to_string(qbits) +
+         "Generating a DSA parameter set with a " + std::to_string(qbits) +
          "long q requires a seed at least as many bits long");
 
-   std::auto_ptr<HashFunction> hash(
-      af.make_hash_function("SHA-" + to_string(qbits)));
+   std::unique_ptr<HashFunction> hash(
+      af.make_hash_function("SHA-" + std::to_string(qbits)));
 
    const u32bit HASH_SIZE = hash->OUTPUT_LENGTH;
 
diff --git a/src/math/numbertheory/make_prm.cpp b/src/math/numbertheory/make_prm.cpp
index 61d42634a..23b8cf549 100644
--- a/src/math/numbertheory/make_prm.cpp
+++ b/src/math/numbertheory/make_prm.cpp
@@ -20,7 +20,7 @@ BigInt random_prime(RandomNumberGenerator& rng,
    {
    if(bits <= 1)
       throw Invalid_Argument("random_prime: Can't make a prime of " +
-                             to_string(bits) + " bits");
+                             std::to_string(bits) + " bits");
    else if(bits == 2)
       return ((rng.next_byte() % 2) ? 2 : 3);
    else if(bits == 3)
@@ -88,7 +88,7 @@ BigInt random_safe_prime(RandomNumberGenerator& rng, u32bit bits)
    {
    if(bits <= 64)
       throw Invalid_Argument("random_safe_prime: Can't make a prime of " +
-                             to_string(bits) + " bits");
+                             std::to_string(bits) + " bits");
 
    BigInt p;
    do
diff --git a/src/math/numbertheory/numthry.cpp b/src/math/numbertheory/numthry.cpp
index e4c52323e..f79fdec2b 100644
--- a/src/math/numbertheory/numthry.cpp
+++ b/src/math/numbertheory/numthry.cpp
@@ -77,7 +77,7 @@ u32bit miller_rabin_test_iterations(u32bit bits, bool verify)
    {
    struct mapping { u32bit bits; u32bit verify_iter; u32bit check_iter; };
 
-   static const mapping tests[] = {
+   const mapping tests[] = {
       {   50, 55, 25 },
       {  100, 38, 22 },
       {  160, 32, 18 },