Botan::OSSL_BN Class Reference

#include <bn_wrap.h>

Public Member Functions
size_t	bytes () const
void	encode (byte[], size_t) const
OSSL_BN &	operator= (const OSSL_BN &)
	OSSL_BN (const BigInt &=0)
	OSSL_BN (const byte[], size_t)
	OSSL_BN (const OSSL_BN &)
BigInt	to_bigint () const
SecureVector< byte >	to_bytes () const
	~OSSL_BN ()

Public Attributes
BIGNUM *	value

Detailed Description

Lightweight OpenSSL BN wrapper. For internal use only.

Definition at line 19 of file bn_wrap.h.

Constructor & Destructor Documentation

OSSL_BN() [1/3]

Botan::OSSL_BN::OSSL_BN

(

const OSSL_BN &

other

)

Definition at line 35 of file bn_wrap.cpp.

   {
   value = BN_dup(other.value);
   }

References OSSL_BN(), and value.

Referenced by operator=(), and OSSL_BN().

OSSL_BN() [2/3]

Botan::OSSL_BN::OSSL_BN

(

const BigInt &

in = 0

)

Definition at line 15 of file bn_wrap.cpp.

   {
   value = BN_new();
   SecureVector<byte> encoding = BigInt::encode(in);
   if(in != 0)
      BN_bin2bn(encoding, encoding.size(), value);
   }

References Botan::BigInt::encode(), Botan::MemoryRegion< T >::size(), and value.

OSSL_BN() [3/3]

Botan::OSSL_BN::OSSL_BN	(	const byte	in[],
		size_t	length )

Definition at line 26 of file bn_wrap.cpp.

   {
   value = BN_new();
   BN_bin2bn(in, length, value);
   }

References value.

~OSSL_BN()

Botan::OSSL_BN::~OSSL_BN

(

)

Definition at line 43 of file bn_wrap.cpp.

   {
   BN_clear_free(value);
   }

References value.

Member Function Documentation

bytes()

size_t Botan::OSSL_BN::bytes

(

)

const

Definition at line 68 of file bn_wrap.cpp.

   {
   return BN_num_bytes(value);
   }

References value.

Referenced by encode(), and to_bigint().

encode()

void Botan::OSSL_BN::encode	(	byte	out[],
		size_t	length ) const

Definition at line 60 of file bn_wrap.cpp.

   {
   BN_bn2bin(value, out + (length - bytes()));
   }

References bytes(), and value.

operator=()

OSSL_BN & Botan::OSSL_BN::operator=

(

const OSSL_BN &

other

)

Definition at line 51 of file bn_wrap.cpp.

   {
   BN_copy(value, other.value);
   return (*this);
   }

References OSSL_BN(), and value.

to_bigint()

BigInt Botan::OSSL_BN::to_bigint

(

)

const

Definition at line 76 of file bn_wrap.cpp.

   {
   SecureVector<byte> out(bytes());
   BN_bn2bin(value, out);
   return BigInt::decode(out);
   }

References bytes(), Botan::BigInt::decode(), and value.

Referenced by to_bytes().

to_bytes()

SecureVector< byte > Botan::OSSL_BN::to_bytes ( ) const

inline

Definition at line 28 of file bn_wrap.h.

         { return BigInt::encode(to_bigint()); }

References Botan::BigInt::encode(), and to_bigint().

Member Data Documentation

value

BIGNUM* Botan::OSSL_BN::value

Definition at line 22 of file bn_wrap.h.

Referenced by bytes(), encode(), operator=(), OSSL_BN(), OSSL_BN(), OSSL_BN(), to_bigint(), and ~OSSL_BN().

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The documentation for this class was generated from the following files:

• src/engine/openssl/bn_wrap.h
• src/engine/openssl/bn_wrap.cpp