Botan::RSA_Public_Operation Class Reference

#include <rsa.h>

Inheritance diagram for Botan::RSA_Public_Operation:

Public Member Functions
SecureVector< byte >	encrypt (const byte msg[], size_t msg_len, RandomNumberGenerator &)
size_t	max_input_bits () const
virtual size_t	message_part_size () const
virtual size_t	message_parts () const
	RSA_Public_Operation (const RSA_PublicKey &rsa)
virtual bool	verify (const byte[], size_t, const byte[], size_t)
SecureVector< byte >	verify_mr (const byte msg[], size_t msg_len)
bool	with_recovery () const

Detailed Description

RSA public (encrypt/verify) operation

Definition at line 116 of file rsa.h.

Constructor & Destructor Documentation

RSA_Public_Operation()

Botan::RSA_Public_Operation::RSA_Public_Operation ( const RSA_PublicKey & rsa )

inline

Definition at line 120 of file rsa.h.

                                                     :
         n(rsa.get_n()), powermod_e_n(rsa.get_e(), rsa.get_n())
         {}

Referenced by Botan::Core_Engine::get_encryption_op(), and Botan::Core_Engine::get_verify_op().

Member Function Documentation

encrypt()

SecureVector< byte > Botan::RSA_Public_Operation::encrypt ( const byte msg[], size_t msg_len, RandomNumberGenerator &  )

inlinevirtual

Implements Botan::PK_Ops::Encryption.

Definition at line 127 of file rsa.h.

         {
         BigInt m(msg, msg_len);
         return BigInt::encode_1363(public_op(m), n.bytes());
         }

References Botan::BigInt::encode_1363().

max_input_bits()

size_t Botan::RSA_Public_Operation::max_input_bits ( ) const

inlinevirtual

Get the maximum message size in bits supported by this public key.

Returns

maximum message in bits

Implements Botan::PK_Ops::Verification.

Definition at line 124 of file rsa.h.

{ return (n.bits() - 1); }

message_part_size()

virtual size_t Botan::PK_Ops::Verification::message_part_size ( ) const

inlinevirtualinherited

Find out the message part size supported by this scheme/key.

Returns

size of the message parts

Reimplemented in Botan::DSA_Verification_Operation, Botan::ECDSA_Verification_Operation, and Botan::NR_Verification_Operation.

Definition at line 104 of file pk_ops.h.

{ return 0; }

message_parts()

virtual size_t Botan::PK_Ops::Verification::message_parts ( ) const

inlinevirtualinherited

Find out the number of message parts supported by this scheme.

Returns

number of message parts

Reimplemented in Botan::DSA_Verification_Operation, Botan::ECDSA_Verification_Operation, and Botan::NR_Verification_Operation.

Definition at line 98 of file pk_ops.h.

{ return 1; }

verify()

virtual bool Botan::PK_Ops::Verification::verify ( const byte [], size_t , const byte [], size_t  )

inlinevirtualinherited

Reimplemented in Botan::DSA_Verification_Operation, and Botan::ECDSA_Verification_Operation.

Definition at line 120 of file pk_ops.h.

         {
         throw Invalid_State("Message recovery required");
         }

verify_mr()

SecureVector< byte > Botan::RSA_Public_Operation::verify_mr ( const byte msg[], size_t msg_len )

inlinevirtual

Reimplemented from Botan::PK_Ops::Verification.

Definition at line 134 of file rsa.h.

         {
         BigInt m(msg, msg_len);
         return BigInt::encode(public_op(m));
         }

References Botan::BigInt::encode().

with_recovery()

bool Botan::RSA_Public_Operation::with_recovery ( ) const

inlinevirtual

Returns

boolean specifying if this key type supports message recovery and thus if you need to call verify() or verify_mr()

Implements Botan::PK_Ops::Verification.

Definition at line 125 of file rsa.h.

{ return true; }

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

• src/pubkey/rsa/rsa.h