#include <elgamal.h>

Inheritance diagram for Botan::ElGamal_PrivateKey:

Public Member Functions
std::string	algo_name () const override

AlgorithmIdentifier	algorithm_identifier () const override

bool	check_key (RandomNumberGenerator &rng, bool) const override

std::unique_ptr< PK_Ops::Decryption >	create_decryption_op (RandomNumberGenerator &rng, const std::string &params, const std::string &provider) const override

std::unique_ptr< PK_Ops::Encryption >	create_encryption_op (RandomNumberGenerator &rng, const std::string &params, const std::string &provider) const override

virtual std::unique_ptr< PK_Ops::KEM_Decryption >	create_kem_decryption_op (RandomNumberGenerator &rng, const std::string &params, const std::string &provider) const

virtual std::unique_ptr< PK_Ops::KEM_Encryption >	create_kem_encryption_op (RandomNumberGenerator &rng, const std::string &params, const std::string &provider) const

virtual std::unique_ptr< PK_Ops::Key_Agreement >	create_key_agreement_op (RandomNumberGenerator &rng, const std::string &params, const std::string &provider) const

virtual std::unique_ptr< PK_Ops::Signature >	create_signature_op (RandomNumberGenerator &rng, const std::string &params, const std::string &provider) const

virtual std::unique_ptr< PK_Ops::Verification >	create_verification_op (const std::string &params, const std::string &provider) const

virtual Signature_Format	default_x509_signature_format () const

	ElGamal_PrivateKey (const AlgorithmIdentifier &alg_id, const secure_vector< uint8_t > &key_bits)

	ElGamal_PrivateKey (RandomNumberGenerator &rng, const DL_Group &group, const BigInt &priv_key=0)

size_t	estimated_strength () const override

std::string	fingerprint (const std::string &alg) const

std::string	fingerprint_private (const std::string &alg) const

std::string	fingerprint_public (const std::string &alg="SHA-256") const

const DL_Group &	get_domain () const

const DL_Group &	get_group () const

virtual OID	get_oid () const

const BigInt &	get_x () const

const BigInt &	get_y () const

DL_Group::Format	group_format () const override

const BigInt &	group_g () const

const BigInt &	group_p () const

const BigInt &	group_q () const

size_t	key_length () const override

virtual size_t	message_part_size () const

virtual size_t	message_parts () const

virtual AlgorithmIdentifier	pkcs8_algorithm_identifier () const

secure_vector< uint8_t >	private_key_bits () const override

secure_vector< uint8_t >	private_key_info () const

std::vector< uint8_t >	public_key_bits () const override

virtual bool	stateful_operation () const

std::vector< uint8_t >	subject_public_key () const

Protected Attributes
DL_Group	m_group

BigInt	m_x

BigInt	m_y

Detailed Description

ElGamal Private Key

Definition at line 53 of file elgamal.h.

Constructor & Destructor Documentation

◆ ElGamal_PrivateKey() [1/2]

Botan::ElGamal_PrivateKey::ElGamal_PrivateKey	(	const AlgorithmIdentifier &	alg_id,
		const secure_vector< uint8_t > &	key_bits
	)

Load a private key.

Parameters

alg_id	the X.509 algorithm identifier
key_bits	DER encoded key bits in ANSI X9.42 format

Definition at line 46 of file elgamal.cpp.

References Botan::DL_Scheme_PublicKey::m_group, Botan::DL_Scheme_PrivateKey::m_x, Botan::DL_Scheme_PublicKey::m_y, Botan::DL_Group::p_bits(), and Botan::DL_Group::power_g_p().

                                                                                :
    DL_Scheme_PrivateKey(alg_id, key_bits, DL_Group::ANSI_X9_42)
    {
    m_y = m_group.power_g_p(m_x, m_group.p_bits());
    }

◆ ElGamal_PrivateKey() [2/2]

Botan::ElGamal_PrivateKey::ElGamal_PrivateKey	(	RandomNumberGenerator &	rng,
		const DL_Group &	group,
		const BigInt &	priv_key = `0`
	)

Create a private key.

Parameters

rng	random number generator to use
group	the group to be used in the key
priv_key	the key's secret value (or if zero, generate a new key)

Definition at line 27 of file elgamal.cpp.

References Botan::DL_Group::exponent_bits(), Botan::BigInt::is_zero(), Botan::DL_Scheme_PublicKey::m_group, Botan::DL_Scheme_PrivateKey::m_x, Botan::DL_Scheme_PublicKey::m_y, Botan::DL_Group::p_bits(), Botan::DL_Group::power_g_p(), and Botan::BigInt::randomize().

    {
    m_x = x;
    m_group = group;
 
    if(m_x.is_zero())
       {
       const size_t exp_bits = m_group.exponent_bits();
       m_x.randomize(rng, exp_bits);
       m_y = m_group.power_g_p(m_x, exp_bits);
       }
    else
       {
       m_y = m_group.power_g_p(m_x, m_group.p_bits());
       }
    }

Member Function Documentation

◆ algo_name()

std::string Botan::ElGamal_PublicKey::algo_name ( ) const

inlineoverridevirtualinherited

Get the name of the underlying public key scheme.

Returns: name of the public key scheme

Implements Botan::Public_Key.

Definition at line 21 of file elgamal.h.

Referenced by create_decryption_op(), and Botan::ElGamal_PublicKey::create_encryption_op().

21 { return "ElGamal"; }

◆ algorithm_identifier()

AlgorithmIdentifier Botan::DL_Scheme_PublicKey::algorithm_identifier ( ) const

overridevirtualinherited

Returns: X.509 AlgorithmIdentifier for this key

Implements Botan::Public_Key.

Definition at line 25 of file dl_algo.cpp.

References Botan::DL_Group::DER_encode(), Botan::Public_Key::get_oid(), Botan::DL_Scheme_PublicKey::group_format(), and Botan::DL_Scheme_PublicKey::m_group.

    {
    return AlgorithmIdentifier(get_oid(),
                               m_group.DER_encode(group_format()));
    }

◆ check_key()

bool Botan::ElGamal_PrivateKey::check_key	(	RandomNumberGenerator &	rng,
		bool	strong
	)		const

overridevirtual

Test the key values for consistency.

Parameters

rng	rng to use
strong	whether to perform strong and lengthy version of the test

Returns: true if the test is passed

Reimplemented from Botan::DL_Scheme_PrivateKey.

Definition at line 56 of file elgamal.cpp.

References Botan::DL_Scheme_PrivateKey::check_key(), and Botan::KeyPair::encryption_consistency_check().

    {
    if(!DL_Scheme_PrivateKey::check_key(rng, strong))
       return false;
 
    if(!strong)
       return true;
 
    return KeyPair::encryption_consistency_check(rng, *this, "OAEP(SHA-256)");
    }

◆ create_decryption_op()

std::unique_ptr< PK_Ops::Decryption > Botan::ElGamal_PrivateKey::create_decryption_op	(	RandomNumberGenerator &	rng,
		const std::string &	params,
		const std::string &	provider
	)		const

overridevirtual

This is an internal library function exposed on key types. In almost all cases applications should use wrappers in pubkey.h

Return an decryption operation for this key/params or throw

Parameters

rng	a random number generator. The PK_Op may maintain a reference to the RNG and use it many times. The rng must outlive any operations which reference it.
params	additional parameters
provider	the provider to use

Reimplemented from Botan::Private_Key.

Definition at line 198 of file elgamal.cpp.

References Botan::ElGamal_PublicKey::algo_name().

    {
    if(provider == "base" || provider.empty())
       return std::unique_ptr<PK_Ops::Decryption>(new ElGamal_Decryption_Operation(*this, params, rng));
    throw Provider_Not_Found(algo_name(), provider);
    }

◆ create_encryption_op()

std::unique_ptr< PK_Ops::Encryption > Botan::ElGamal_PublicKey::create_encryption_op	(	RandomNumberGenerator &	rng,
		const std::string &	params,
		const std::string &	provider
	)		const

overridevirtualinherited

This is an internal library function exposed on key types. In almost all cases applications should use wrappers in pubkey.h

Return an encryption operation for this key/params or throw

Parameters

rng	a random number generator. The PK_Op may maintain a reference to the RNG and use it many times. The rng must outlive any operations which reference it.
params	additional parameters
provider	the provider to use

Reimplemented from Botan::Public_Key.

Definition at line 188 of file elgamal.cpp.

References Botan::ElGamal_PublicKey::algo_name().

    {
    if(provider == "base" || provider.empty())
       return std::unique_ptr<PK_Ops::Encryption>(new ElGamal_Encryption_Operation(*this, params));
    throw Provider_Not_Found(algo_name(), provider);
    }

◆ create_kem_decryption_op()

std::unique_ptr< PK_Ops::KEM_Decryption > Botan::Private_Key::create_kem_decryption_op	(	RandomNumberGenerator &	rng,
		const std::string &	params,
		const std::string &	provider
	)		const

virtualinherited

This is an internal library function exposed on key types. In almost all cases applications should use wrappers in pubkey.h

Return a KEM decryption operation for this key/params or throw

Parameters

rng	a random number generator. The PK_Op may maintain a reference to the RNG and use it many times. The rng must outlive any operations which reference it.
params	additional parameters
provider	the provider to use

Reimplemented in Botan::RSA_PrivateKey, and Botan::McEliece_PrivateKey.

Definition at line 122 of file pk_keys.cpp.

References Botan::Public_Key::algo_name().

Referenced by Botan::PK_KEM_Decryptor::PK_KEM_Decryptor().

    {
    throw Lookup_Error(algo_name() + " does not support KEM decryption");
    }

◆ create_kem_encryption_op()

std::unique_ptr< PK_Ops::KEM_Encryption > Botan::Public_Key::create_kem_encryption_op	(	RandomNumberGenerator &	rng,
		const std::string &	params,
		const std::string &	provider
	)		const

virtualinherited

This is an internal library function exposed on key types. In almost all cases applications should use wrappers in pubkey.h

Return a KEM encryption operation for this key/params or throw

Parameters

rng	a random number generator. The PK_Op may maintain a reference to the RNG and use it many times. The rng must outlive any operations which reference it.
params	additional parameters
provider	the provider to use

Reimplemented in Botan::RSA_PublicKey, and Botan::McEliece_PublicKey.

Definition at line 99 of file pk_keys.cpp.

References Botan::Public_Key::algo_name().

Referenced by Botan::PK_KEM_Encryptor::PK_KEM_Encryptor().

    {
    throw Lookup_Error(algo_name() + " does not support KEM encryption");
    }

◆ create_key_agreement_op()

std::unique_ptr< PK_Ops::Key_Agreement > Botan::Private_Key::create_key_agreement_op	(	RandomNumberGenerator &	rng,
		const std::string &	params,
		const std::string &	provider
	)		const

virtualinherited

This is an internal library function exposed on key types. In almost all cases applications should use wrappers in pubkey.h

Return a key agreement operation for this key/params or throw

Parameters

rng	a random number generator. The PK_Op may maintain a reference to the RNG and use it many times. The rng must outlive any operations which reference it.
params	additional parameters
provider	the provider to use

Reimplemented in Botan::ECDH_PrivateKey, Botan::Curve25519_PrivateKey, and Botan::DH_PrivateKey.

Definition at line 138 of file pk_keys.cpp.

References Botan::Public_Key::algo_name().

Referenced by Botan::PK_Key_Agreement::PK_Key_Agreement().

    {
    throw Lookup_Error(algo_name() + " does not support key agreement");
    }

◆ create_signature_op()

std::unique_ptr< PK_Ops::Signature > Botan::Private_Key::create_signature_op	(	RandomNumberGenerator &	rng,
		const std::string &	params,
		const std::string &	provider
	)		const

virtualinherited

This is an internal library function exposed on key types. In almost all cases applications should use wrappers in pubkey.h

Return a signature operation for this key/params or throw

Parameters

rng	a random number generator. The PK_Op may maintain a reference to the RNG and use it many times. The rng must outlive any operations which reference it.
params	additional parameters
provider	the provider to use

Reimplemented in Botan::XMSS_PrivateKey, Botan::TPM_PrivateKey, Botan::RSA_PrivateKey, Botan::ECDSA_PrivateKey, Botan::GOST_3410_PrivateKey, Botan::SM2_PrivateKey, Botan::ECGDSA_PrivateKey, Botan::ECKCDSA_PrivateKey, Botan::Ed25519_PrivateKey, and Botan::DSA_PrivateKey.

Definition at line 130 of file pk_keys.cpp.

References Botan::Public_Key::algo_name().

Referenced by Botan::PK_Signer::PK_Signer().

    {
    throw Lookup_Error(algo_name() + " does not support signatures");
    }

◆ create_verification_op()

std::unique_ptr< PK_Ops::Verification > Botan::Public_Key::create_verification_op	(	const std::string &	params,
		const std::string &	provider
	)		const

virtualinherited

This is an internal library function exposed on key types. In almost all cases applications should use wrappers in pubkey.h

Return a verification operation for this key/params or throw

Parameters

params	additional parameters
provider	the provider to use

Reimplemented in Botan::XMSS_PublicKey, Botan::RSA_PublicKey, Botan::ECDSA_PublicKey, Botan::XMSS_WOTS_Addressed_PublicKey, Botan::GOST_3410_PublicKey, Botan::ECGDSA_PublicKey, Botan::ECKCDSA_PublicKey, Botan::SM2_PublicKey, Botan::Ed25519_PublicKey, and Botan::DSA_PublicKey.

Definition at line 107 of file pk_keys.cpp.

References Botan::Public_Key::algo_name().

Referenced by Botan::XMSS_WOTS_Addressed_PublicKey::create_verification_op(), and Botan::PK_Verifier::PK_Verifier().

    {
    throw Lookup_Error(algo_name() + " does not support verification");
    }

◆ default_x509_signature_format()

virtual Signature_Format Botan::Public_Key::default_x509_signature_format ( ) const

inlinevirtualinherited

Reimplemented in Botan::GOST_3410_PublicKey.

Definition at line 125 of file pk_keys.h.

References Botan::DER_SEQUENCE, and Botan::IEEE_1363.

Referenced by Botan::X509_Object::choose_sig_format(), and Botan::X509_Object::verify_signature().

          {
          return (this->message_parts() >= 2) ? DER_SEQUENCE : IEEE_1363;
          }

◆ estimated_strength()

size_t Botan::DL_Scheme_PublicKey::estimated_strength ( ) const

overridevirtualinherited

Return the estimated strength of the underlying key against the best currently known attack. Note that this ignores anything but pure attacks against the key itself and do not take into account padding schemes, usage mistakes, etc which might reduce the strength. However it does suffice to provide an upper bound.

Returns: estimated strength in bits

Implements Botan::Public_Key.

Definition at line 20 of file dl_algo.cpp.

References Botan::DL_Group::estimated_strength(), and Botan::DL_Scheme_PublicKey::m_group.

    {
    return m_group.estimated_strength();
    }

◆ fingerprint()

std::string Botan::Private_Key::fingerprint ( const std::string & alg ) const

inlineinherited

Definition at line 215 of file pk_keys.h.

          {
          return fingerprint_private(alg); // match behavior in previous versions
          }

◆ fingerprint_private()

std::string Botan::Private_Key::fingerprint_private ( const std::string & alg ) const

inherited

Returns: Hash of the PKCS #8 encoding for this key object

Definition at line 85 of file pk_keys.cpp.

References Botan::create_hex_fingerprint(), hash_algo, and Botan::Private_Key::private_key_bits().

Referenced by Botan::Certificate_Store_In_SQL::find_certs_for_key(), Botan::Certificate_Store_In_SQL::insert_key(), and Botan::Certificate_Store_In_SQL::remove_key().

    {
    return create_hex_fingerprint(private_key_bits(), hash_algo);
    }

◆ fingerprint_public()

std::string Botan::Public_Key::fingerprint_public ( const std::string & alg = "SHA-256" ) const

inherited

Returns: Hash of the subject public key

Definition at line 77 of file pk_keys.cpp.

References Botan::create_hex_fingerprint(), hash_algo, and Botan::Public_Key::subject_public_key().

    {
    return create_hex_fingerprint(subject_public_key(), hash_algo);
    }

◆ get_domain()

const DL_Group& Botan::DL_Scheme_PublicKey::get_domain ( ) const

inlineinherited

Get the DL domain parameters of this key.

Returns: DL domain parameters of this key

Definition at line 32 of file dl_algo.h.

32 { return m_group; }

Botan::DL_Scheme_PublicKey::m_group

DL_Group m_group

Definition: dl_algo.h:97

◆ get_group()

const DL_Group& Botan::DL_Scheme_PublicKey::get_group ( ) const

inlineinherited

Get the DL domain parameters of this key.

Returns: DL domain parameters of this key

Definition at line 38 of file dl_algo.h.

38 { return m_group; }

Botan::DL_Scheme_PublicKey::m_group

DL_Group m_group

Definition: dl_algo.h:97

◆ get_oid()

OID Botan::Public_Key::get_oid ( ) const

virtualinherited

Get the OID of the underlying public key scheme.

Returns: OID of the public key scheme

Reimplemented in Botan::XMSS_WOTS_Addressed_PublicKey.

Definition at line 53 of file pk_keys.cpp.

References Botan::Public_Key::algo_name(), Botan::OID::empty(), and Botan::OIDS::str2oid_or_empty().

Referenced by Botan::DL_Scheme_PublicKey::algorithm_identifier(), Botan::Curve25519_PublicKey::algorithm_identifier(), Botan::Ed25519_PublicKey::algorithm_identifier(), Botan::McEliece_PublicKey::algorithm_identifier(), Botan::RSA_PublicKey::algorithm_identifier(), Botan::GOST_3410_PublicKey::algorithm_identifier(), Botan::EC_PublicKey::algorithm_identifier(), Botan::TPM_PrivateKey::algorithm_identifier(), and Botan::XMSS_WOTS_Addressed_PublicKey::get_oid().

    {
    const OID o = OIDS::str2oid_or_empty(algo_name());
    if(o.empty())
       throw Lookup_Error("PK algo " + algo_name() + " has no defined OIDs");
    return o;
    }

◆ get_x()

const BigInt& Botan::DL_Scheme_PrivateKey::get_x ( ) const

inlineinherited

Get the secret key x.

Returns: secret key

Definition at line 113 of file dl_algo.h.

113 { return m_x; }

Botan::DL_Scheme_PrivateKey::m_x

BigInt m_x

Definition: dl_algo.h:135

◆ get_y()

const BigInt& Botan::DL_Scheme_PublicKey::get_y ( ) const

inlineinherited

Get the public value y with y = g^x mod p where x is the secret key.

Definition at line 43 of file dl_algo.h.

43 { return m_y; }

Botan::DL_Scheme_PublicKey::m_y

BigInt m_y

Definition: dl_algo.h:92

◆ group_format()

DL_Group::Format Botan::ElGamal_PublicKey::group_format ( ) const

inlineoverridevirtualinherited

Get the underlying groups encoding format.

Returns: encoding format

Implements Botan::DL_Scheme_PublicKey.

Definition at line 22 of file elgamal.h.

References Botan::DL_Group::ANSI_X9_42.

22 { return DL_Group::ANSI_X9_42; }

Botan::DL_Group::ANSI_X9_42

Definition: dl_group.h:41

◆ group_g()

const BigInt& Botan::DL_Scheme_PublicKey::group_g ( ) const

inlineinherited

Get the generator g of the underlying DL group.

Returns: generator g

Definition at line 61 of file dl_algo.h.

61 { return m_group.get_g(); }

Botan::DL_Group::get_g

const BigInt & get_g() const

Definition: dl_group.cpp:433

Botan::DL_Scheme_PublicKey::m_group

DL_Group m_group

Definition: dl_algo.h:97

◆ group_p()

const BigInt& Botan::DL_Scheme_PublicKey::group_p ( ) const

inlineinherited

Get the prime p of the underlying DL group.

Returns: prime p

Definition at line 49 of file dl_algo.h.

Referenced by Botan::DH_PublicKey::public_value().

49 { return m_group.get_p(); }

Botan::DL_Group::get_p

const BigInt & get_p() const

Definition: dl_group.cpp:425

Botan::DL_Scheme_PublicKey::m_group

DL_Group m_group

Definition: dl_algo.h:97

◆ group_q()

const BigInt& Botan::DL_Scheme_PublicKey::group_q ( ) const

inlineinherited

Get the prime q of the underlying DL group.

Returns: prime q

Definition at line 55 of file dl_algo.h.

Referenced by Botan::DSA_PrivateKey::check_key(), and Botan::DSA_PrivateKey::DSA_PrivateKey().

55 { return m_group.get_q(); }

Botan::DL_Scheme_PublicKey::m_group

DL_Group m_group

Definition: dl_algo.h:97

Botan::DL_Group::get_q

const BigInt & get_q() const

Definition: dl_group.cpp:441

◆ key_length()

size_t Botan::DL_Scheme_PublicKey::key_length ( ) const

overridevirtualinherited

Return an integer value best approximating the length of the primary security parameter. For example for RSA this will be the size of the modulus, for ECDSA the size of the ECC group, and for McEliece the size of the code will be returned.

Implements Botan::Public_Key.

Definition at line 15 of file dl_algo.cpp.

References Botan::DL_Scheme_PublicKey::m_group, and Botan::DL_Group::p_bits().

    {
    return m_group.p_bits();
    }

◆ message_part_size()

virtual size_t Botan::Public_Key::message_part_size ( ) const

inlinevirtualinherited

Returns how large each of the message parts refered to by message_parts() is

This function is public but applications should have few reasons to ever call this.

Returns: size of the message parts in bits

Reimplemented in Botan::ECDSA_PublicKey, Botan::GOST_3410_PublicKey, Botan::ECGDSA_PublicKey, Botan::ECKCDSA_PublicKey, Botan::SM2_PublicKey, and Botan::DSA_PublicKey.

Definition at line 123 of file pk_keys.h.

Referenced by Botan::PK_Signer::PK_Signer(), and Botan::PK_Verifier::PK_Verifier().

123 { return 0; }

◆ message_parts()

virtual size_t Botan::Public_Key::message_parts ( ) const

inlinevirtualinherited

Returns more than 1 if the output of this algorithm (ciphertext, signature) should be treated as more than one value. This is used for algorithms like DSA and ECDSA, where the (r,s) output pair can be encoded as either a plain binary list or a TLV tagged DER encoding depending on the protocol.

This function is public but applications should have few reasons to ever call this.

Returns: number of message parts

Reimplemented in Botan::ECDSA_PublicKey, Botan::GOST_3410_PublicKey, Botan::ECGDSA_PublicKey, Botan::ECKCDSA_PublicKey, Botan::SM2_PublicKey, and Botan::DSA_PublicKey.

Definition at line 112 of file pk_keys.h.

Referenced by Botan::PK_Signer::PK_Signer(), and Botan::PK_Verifier::PK_Verifier().

112 { return 1; }

◆ pkcs8_algorithm_identifier()

virtual AlgorithmIdentifier Botan::Private_Key::pkcs8_algorithm_identifier ( ) const

inlinevirtualinherited

Returns: PKCS #8 AlgorithmIdentifier for this key Might be different from the X.509 identifier, but normally is not

Reimplemented in Botan::XMSS_WOTS_PrivateKey, Botan::GOST_3410_PrivateKey, and Botan::XMSS_WOTS_Addressed_PrivateKey.

Definition at line 204 of file pk_keys.h.

Referenced by Botan::Private_Key::private_key_info().

205 { return algorithm_identifier(); }

Botan::Public_Key::algorithm_identifier

virtual AlgorithmIdentifier algorithm_identifier() const =0

◆ private_key_bits()

secure_vector< uint8_t > Botan::DL_Scheme_PrivateKey::private_key_bits ( ) const

overridevirtualinherited

Returns: BER encoded private key bits

Implements Botan::Private_Key.

Definition at line 52 of file dl_algo.cpp.

References Botan::DER_Encoder::encode(), Botan::DER_Encoder::get_contents(), and Botan::DL_Scheme_PrivateKey::m_x.

    {
    return DER_Encoder().encode(m_x).get_contents();
    }

◆ private_key_info()

secure_vector< uint8_t > Botan::Private_Key::private_key_info ( ) const

inherited

Returns: PKCS #8 private key encoding for this key object

Definition at line 61 of file pk_keys.cpp.

References Botan::DER_Encoder::encode(), Botan::DER_Encoder::end_cons(), Botan::DER_Encoder::get_contents(), Botan::OCTET_STRING, Botan::Private_Key::pkcs8_algorithm_identifier(), Botan::Private_Key::private_key_bits(), Botan::SEQUENCE, and Botan::DER_Encoder::start_cons().

Referenced by Botan::PKCS8::BER_encode(), Botan::PKCS8::BER_encode_encrypted_pbkdf_iter(), and Botan::PKCS8::BER_encode_encrypted_pbkdf_msec().

    {
    const size_t PKCS8_VERSION = 0;
 
    return DER_Encoder()
          .start_cons(SEQUENCE)
             .encode(PKCS8_VERSION)
             .encode(pkcs8_algorithm_identifier())
             .encode(private_key_bits(), OCTET_STRING)
          .end_cons()
       .get_contents();
    }

◆ public_key_bits()

std::vector< uint8_t > Botan::DL_Scheme_PublicKey::public_key_bits ( ) const

overridevirtualinherited

Returns: BER encoded public key bits

Implements Botan::Public_Key.

Definition at line 31 of file dl_algo.cpp.

References Botan::DER_Encoder::encode(), and Botan::DL_Scheme_PublicKey::m_y.

    {
    std::vector<uint8_t> output;
    DER_Encoder(output).encode(m_y);
    return output;
    }

◆ stateful_operation()

virtual bool Botan::Private_Key::stateful_operation ( ) const

inlinevirtualinherited

Reimplemented in Botan::XMSS_PrivateKey.

Definition at line 188 of file pk_keys.h.

188 { return false; }

◆ subject_public_key()

std::vector< uint8_t > Botan::Public_Key::subject_public_key ( ) const

inherited

Returns: X.509 subject key encoding for this key object

Definition at line 38 of file pk_keys.cpp.

References Botan::Public_Key::algorithm_identifier(), Botan::BIT_STRING, Botan::DER_Encoder::encode(), Botan::DER_Encoder::end_cons(), Botan::Public_Key::public_key_bits(), Botan::SEQUENCE, and Botan::DER_Encoder::start_cons().

Referenced by Botan::X509::BER_encode(), Botan::PKCS10_Request::create(), Botan::Public_Key::fingerprint_public(), and Botan::X509::PEM_encode().

    {
    std::vector<uint8_t> output;
 
    DER_Encoder(output).start_cons(SEQUENCE)
          .encode(algorithm_identifier())
          .encode(public_key_bits(), BIT_STRING)
       .end_cons();
 
    return output;
    }

Member Data Documentation

◆ m_group

DL_Group Botan::DL_Scheme_PublicKey::m_group

protectedinherited

The DL group

Definition at line 97 of file dl_algo.h.

Referenced by Botan::DL_Scheme_PublicKey::algorithm_identifier(), Botan::DL_Scheme_PublicKey::check_key(), Botan::DL_Scheme_PrivateKey::check_key(), Botan::DH_PrivateKey::DH_PrivateKey(), Botan::DH_PublicKey::DH_PublicKey(), Botan::DL_Scheme_PrivateKey::DL_Scheme_PrivateKey(), Botan::DSA_PrivateKey::DSA_PrivateKey(), Botan::DSA_PublicKey::DSA_PublicKey(), ElGamal_PrivateKey(), Botan::DL_Scheme_PublicKey::estimated_strength(), and Botan::DL_Scheme_PublicKey::key_length().

◆ m_x

BigInt Botan::DL_Scheme_PrivateKey::m_x

protectedinherited

The DL private key

Definition at line 135 of file dl_algo.h.

Referenced by Botan::DSA_PrivateKey::check_key(), Botan::DL_Scheme_PrivateKey::check_key(), Botan::DH_PrivateKey::DH_PrivateKey(), Botan::DL_Scheme_PrivateKey::DL_Scheme_PrivateKey(), Botan::DSA_PrivateKey::DSA_PrivateKey(), ElGamal_PrivateKey(), and Botan::DL_Scheme_PrivateKey::private_key_bits().

◆ m_y

BigInt Botan::DL_Scheme_PublicKey::m_y

protectedinherited

The DL public key

Definition at line 92 of file dl_algo.h.

Referenced by Botan::DL_Scheme_PublicKey::check_key(), Botan::DL_Scheme_PrivateKey::check_key(), Botan::DH_PrivateKey::DH_PrivateKey(), Botan::DH_PublicKey::DH_PublicKey(), Botan::DSA_PrivateKey::DSA_PrivateKey(), Botan::DSA_PublicKey::DSA_PublicKey(), ElGamal_PrivateKey(), Botan::DL_Scheme_PublicKey::public_key_bits(), and Botan::DH_PublicKey::public_value().

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

src/lib/pubkey/elgamal/elgamal.h
src/lib/pubkey/elgamal/elgamal.cpp

Public Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ ElGamal_PrivateKey() [1/2]

◆ ElGamal_PrivateKey() [2/2]

Member Function Documentation

◆ algo_name()

◆ algorithm_identifier()

◆ check_key()

◆ create_decryption_op()

◆ create_encryption_op()

◆ create_kem_decryption_op()

◆ create_kem_encryption_op()

◆ create_key_agreement_op()

◆ create_signature_op()

◆ create_verification_op()

◆ default_x509_signature_format()

◆ estimated_strength()

◆ fingerprint()

◆ fingerprint_private()

◆ fingerprint_public()

◆ get_domain()

◆ get_group()

◆ get_oid()

◆ get_x()

◆ get_y()

◆ group_format()

◆ group_g()

◆ group_p()

◆ group_q()

◆ key_length()

◆ message_part_size()

◆ message_parts()

◆ pkcs8_algorithm_identifier()

◆ private_key_bits()

◆ private_key_info()

◆ public_key_bits()

◆ stateful_operation()

◆ subject_public_key()

Member Data Documentation

◆ m_group

◆ m_x

◆ m_y