#include <ecdsa.h>

Inheritance diagram for Botan::ECDSA_PrivateKey:

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

AlgorithmIdentifier	algorithm_identifier () const override

bool	check_key (RandomNumberGenerator &rng, bool) const override

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

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

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

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

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

std::vector< uint8_t >	DER_domain () const

const EC_Group &	domain () const

EC_Group_Encoding	domain_format () const

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

	ECDSA_PrivateKey (RandomNumberGenerator &rng, const EC_Group &domain, const BigInt &x=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

virtual OID	get_oid () const

size_t	key_length () const override

size_t	message_part_size () const override

size_t	message_parts () const override

virtual AlgorithmIdentifier	pkcs8_algorithm_identifier () const

PointGFp::Compression_Type	point_encoding () const

secure_vector< uint8_t >	private_key_bits () const override

secure_vector< uint8_t >	private_key_info () const

const BigInt &	private_value () const

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

const PointGFp &	public_point () const

uint8_t	recovery_param (const std::vector< uint8_t > &msg, const BigInt &r, const BigInt &s) const

void	set_parameter_encoding (EC_Group_Encoding enc)

void	set_point_encoding (PointGFp::Compression_Type enc)

std::vector< uint8_t >	subject_public_key () const

Protected Attributes
EC_Group_Encoding	m_domain_encoding

EC_Group	m_domain_params

PointGFp::Compression_Type	m_point_encoding = PointGFp::UNCOMPRESSED

BigInt	m_private_key

PointGFp	m_public_key

Detailed Description

This class represents ECDSA Private Keys

Definition at line 82 of file ecdsa.h.

Constructor & Destructor Documentation

◆ ECDSA_PrivateKey() [1/2]

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

inline

Load a private key

Parameters

alg_id	the X.509 algorithm identifier
key_bits	ECPrivateKey bits

Definition at line 92 of file ecdsa.h.

93 :

94 EC_PrivateKey(alg_id, key_bits) {}

Botan::EC_PrivateKey::EC_PrivateKey

EC_PrivateKey()=default

◆ ECDSA_PrivateKey() [2/2]

Botan::ECDSA_PrivateKey::ECDSA_PrivateKey	(	RandomNumberGenerator &	rng,
		const EC_Group &	domain,
		const BigInt &	x = `0`
	)

inline

Create a private key.

Parameters

rng	a random number generator
domain	parameters to used for this key
x	the private key (if zero, generate a new random key)

Definition at line 102 of file ecdsa.h.

104 :

105 EC_PrivateKey(rng, domain, x) {}

Botan::EC_PrivateKey::EC_PrivateKey

EC_PrivateKey()=default

Botan::EC_PublicKey::domain

const EC_Group & domain() const

Definition: ecc_key.h:72

Member Function Documentation

◆ algo_name()

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

inlineoverridevirtualinherited

Get this keys algorithm name.

Returns: this keys algorithm name ("ECDSA")

Implements Botan::Public_Key.

Definition at line 61 of file ecdsa.h.

Referenced by create_signature_op(), and Botan::ECDSA_PublicKey::create_verification_op().

61 { return "ECDSA"; }

◆ algorithm_identifier()

AlgorithmIdentifier Botan::EC_PublicKey::algorithm_identifier ( ) const

overridevirtualinherited

Returns: X.509 AlgorithmIdentifier for this key

Implements Botan::Public_Key.

Reimplemented in Botan::GOST_3410_PublicKey.

Definition at line 64 of file ecc_key.cpp.

References Botan::EC_PublicKey::DER_domain(), and Botan::Public_Key::get_oid().

Referenced by Botan::GOST_3410_PrivateKey::pkcs8_algorithm_identifier().

    {
    return AlgorithmIdentifier(get_oid(), DER_domain());
    }

◆ check_key()

bool Botan::ECDSA_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::EC_PublicKey.

Definition at line 116 of file ecdsa.cpp.

References Botan::EC_PublicKey::public_point(), and Botan::KeyPair::signature_consistency_check().

    {
    if(!public_point().on_the_curve())
       return false;
 
    if(!strong)
       return true;
 
    return KeyPair::signature_consistency_check(rng, *this, "EMSA1(SHA-256)");
    }

◆ create_decryption_op()

std::unique_ptr< PK_Ops::Decryption > Botan::Private_Key::create_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 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 in Botan::RSA_PrivateKey, Botan::SM2_PrivateKey, and Botan::ElGamal_PrivateKey.

Definition at line 117 of file pk_keys.cpp.

References Botan::Public_Key::algo_name().

Referenced by Botan::PK_Decryptor_EME::PK_Decryptor_EME().

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

◆ create_encryption_op()

std::unique_ptr< PK_Ops::Encryption > Botan::Public_Key::create_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 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 in Botan::RSA_PublicKey, Botan::SM2_PublicKey, and Botan::ElGamal_PublicKey.

Definition at line 94 of file pk_keys.cpp.

References Botan::Public_Key::algo_name().

Referenced by Botan::PK_Encryptor_EME::PK_Encryptor_EME().

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

◆ 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 125 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 102 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 141 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::ECDSA_PrivateKey::create_signature_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 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 from Botan::Private_Key.

Definition at line 302 of file ecdsa.cpp.

References Botan::ECDSA_PublicKey::algo_name().

    {
 #if defined(BOTAN_HAS_BEARSSL)
    if(provider == "bearssl" || provider.empty())
       {
       try
          {
          return make_bearssl_ecdsa_sig_op(*this, params);
          }
       catch(Lookup_Error& e)
          {
          if(provider == "bearssl")
             throw;
          }
       }
 #endif
 
 #if defined(BOTAN_HAS_OPENSSL)
    if(provider == "openssl" || provider.empty())
       {
       try
          {
          return make_openssl_ecdsa_sig_op(*this, params);
          }
       catch(Lookup_Error& e)
          {
          if(provider == "openssl")
             throw;
          }
       }
 #endif
 
    if(provider == "base" || provider.empty())
       return std::unique_ptr<PK_Ops::Signature>(new ECDSA_Signature_Operation(*this, params, rng));
 
    throw Provider_Not_Found(algo_name(), provider);
    }

◆ create_verification_op()

std::unique_ptr< PK_Ops::Verification > Botan::ECDSA_PublicKey::create_verification_op	(	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 a verification operation for this key/params or throw

Parameters

params	additional parameters
provider	the provider to use

Reimplemented from Botan::Public_Key.

Definition at line 262 of file ecdsa.cpp.

References Botan::ECDSA_PublicKey::algo_name().

    {
 #if defined(BOTAN_HAS_BEARSSL)
    if(provider == "bearssl" || provider.empty())
       {
       try
          {
          return make_bearssl_ecdsa_ver_op(*this, params);
          }
       catch(Lookup_Error& e)
          {
          if(provider == "bearssl")
             throw;
          }
       }
 #endif
 
 #if defined(BOTAN_HAS_OPENSSL)
    if(provider == "openssl" || provider.empty())
       {
       try
          {
          return make_openssl_ecdsa_ver_op(*this, params);
          }
       catch(Lookup_Error& e)
          {
          if(provider == "openssl")
             throw;
          }
       }
 #endif
 
    if(provider == "base" || provider.empty())
       return std::unique_ptr<PK_Ops::Verification>(new ECDSA_Verification_Operation(*this, params));
 
    throw Provider_Not_Found(algo_name(), provider);
    }

◆ DER_domain()

std::vector<uint8_t> Botan::EC_PublicKey::DER_domain ( ) const

inlineinherited

Return the DER encoding of this keys domain in whatever format is preset for this particular key

Definition at line 90 of file ecc_key.h.

Referenced by Botan::EC_PublicKey::algorithm_identifier().

91 { return domain().DER_encode(domain_format()); }

Botan::EC_PublicKey::domain

const EC_Group & domain() const

Definition: ecc_key.h:72

Botan::EC_PublicKey::domain_format

EC_Group_Encoding domain_format() const

Definition: ecc_key.h:97

Botan::EC_Group::DER_encode

std::vector< uint8_t > DER_encode(EC_Group_Encoding form) const

Definition: ec_group.cpp:593

◆ domain()

const EC_Group& Botan::EC_PublicKey::domain ( ) const

inlineinherited

Get the domain parameters of this key.

Exceptions

Invalid_State is thrown if the domain parameters of this point are not set

Returns: the domain parameters of this key

Definition at line 72 of file ecc_key.h.

Referenced by Botan::GOST_3410_PublicKey::algorithm_identifier(), botan_pubkey_sm2_compute_za(), Botan::EC_PrivateKey::EC_PrivateKey(), Botan::EC_PublicKey::EC_PublicKey(), Botan::GOST_3410_PublicKey::GOST_3410_PublicKey(), Botan::EC_PublicKey::key_length(), Botan::ECDSA_PublicKey::recovery_param(), and Botan::SM2_PrivateKey::SM2_PrivateKey().

72 { return m_domain_params; }

Botan::EC_PublicKey::m_domain_params

EC_Group m_domain_params

Definition: ecc_key.h:114

◆ domain_format()

EC_Group_Encoding Botan::EC_PublicKey::domain_format ( ) const

inlineinherited

Get the domain parameter encoding to be used when encoding this key.

Returns: the encoding to use

Definition at line 97 of file ecc_key.h.

98 { return m_domain_encoding; }

Botan::EC_PublicKey::m_domain_encoding

EC_Group_Encoding m_domain_encoding

Definition: ecc_key.h:116

◆ estimated_strength()

size_t Botan::EC_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 25 of file ecc_key.cpp.

References Botan::ecp_work_factor(), and Botan::EC_PublicKey::key_length().

    {
    return ecp_work_factor(key_length());
    }

◆ fingerprint()

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

inlineinherited

Definition at line 204 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 88 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 80 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_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(), and Botan::OIDS::lookup().

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().

    {
    try {
       return OIDS::lookup(algo_name());
       }
    catch(Lookup_Error&)
       {
       throw Lookup_Error("PK algo " + algo_name() + " has no defined OIDs");
       }
    }

◆ key_length()

size_t Botan::EC_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 20 of file ecc_key.cpp.

References Botan::EC_PublicKey::domain(), and Botan::EC_Group::get_p_bits().

Referenced by Botan::EC_PublicKey::estimated_strength().

    {
    return domain().get_p_bits();
    }

◆ message_part_size()

size_t Botan::ECDSA_PublicKey::message_part_size ( ) const

inlineoverridevirtualinherited

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 from Botan::Public_Key.

Definition at line 65 of file ecdsa.h.

66 { return domain().get_order().bytes(); }

Botan::EC_Group::get_order

const BigInt & get_order() const

Definition: ec_group.cpp:479

Botan::EC_PublicKey::domain

const EC_Group & domain() const

Definition: ecc_key.h:72

Botan::BigInt::bytes

size_t bytes() const

Definition: bigint.cpp:266

◆ message_parts()

size_t Botan::ECDSA_PublicKey::message_parts ( ) const

inlineoverridevirtualinherited

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 from Botan::Public_Key.

Definition at line 63 of file ecdsa.h.

63 { return 2; }

◆ 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 193 of file pk_keys.h.

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

194 { return algorithm_identifier(); }

Botan::Public_Key::algorithm_identifier

virtual AlgorithmIdentifier algorithm_identifier() const =0

◆ point_encoding()

PointGFp::Compression_Type Botan::EC_PublicKey::point_encoding ( ) const

inlineinherited

Get the point encoding method to be used when encoding this key.

Returns: the encoding to use

Definition at line 104 of file ecc_key.h.

Referenced by Botan::EC_PublicKey::public_key_bits().

105 { return m_point_encoding; }

Botan::EC_PublicKey::m_point_encoding

PointGFp::Compression_Type m_point_encoding

Definition: ecc_key.h:117

◆ private_key_bits()

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

overridevirtualinherited

Returns: BER encoded private key bits

Implements Botan::Private_Key.

Definition at line 147 of file ecc_key.cpp.

References Botan::BIT_STRING, Botan::BigInt::bytes(), Botan::DER_Encoder::encode(), Botan::PointGFp::encode(), Botan::BigInt::encode_1363(), Botan::DER_Encoder::end_cons(), Botan::DER_Encoder::get_contents(), Botan::EC_PrivateKey::m_private_key, Botan::EC_PublicKey::m_public_key, Botan::OCTET_STRING, Botan::PRIVATE, Botan::SEQUENCE, and Botan::DER_Encoder::start_cons().

    {
    return DER_Encoder()
       .start_cons(SEQUENCE)
          .encode(static_cast<size_t>(1))
          .encode(BigInt::encode_1363(m_private_key, m_private_key.bytes()), OCTET_STRING)
          .start_cons(ASN1_Tag(1), PRIVATE)
             .encode(m_public_key.encode(PointGFp::Compression_Type::UNCOMPRESSED), BIT_STRING)
          .end_cons()
       .end_cons()
       .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 64 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();
    }

◆ private_value()

const BigInt & Botan::EC_PrivateKey::private_value ( ) const

inherited

Get the private key value of this key object.

Returns: the private key value of this key object

Definition at line 99 of file ecc_key.cpp.

References Botan::EC_PrivateKey::m_private_key.

    {
    if(m_private_key == 0)
       throw Invalid_State("EC_PrivateKey::private_value - uninitialized");
 
    return m_private_key;
    }

◆ public_key_bits()

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

overridevirtualinherited

Returns: BER encoded public key bits

Implements Botan::Public_Key.

Reimplemented in Botan::GOST_3410_PublicKey.

Definition at line 69 of file ecc_key.cpp.

References Botan::PointGFp::encode(), Botan::EC_PublicKey::point_encoding(), and Botan::EC_PublicKey::public_point().

Referenced by Botan::EC_PrivateKey::EC_PrivateKey().

    {
    return public_point().encode(point_encoding());
    }

◆ public_point()

const PointGFp& Botan::EC_PublicKey::public_point ( ) const

inlineinherited

Get the public point of this key.

Exceptions

Invalid_State is thrown if the domain parameters of this point are not set

Returns: the public point of this key

Definition at line 57 of file ecc_key.h.

Referenced by botan_pubkey_sm2_compute_za(), Botan::EC_PublicKey::check_key(), Botan::ECKCDSA_PrivateKey::check_key(), Botan::ECGDSA_PrivateKey::check_key(), Botan::SM2_PrivateKey::check_key(), check_key(), Botan::EC_PublicKey::EC_PublicKey(), Botan::GOST_3410_PublicKey::public_key_bits(), Botan::EC_PublicKey::public_key_bits(), and Botan::ECDSA_PublicKey::recovery_param().

57 { return m_public_key; }

Botan::EC_PublicKey::m_public_key

PointGFp m_public_key

Definition: ecc_key.h:115

◆ recovery_param()

uint8_t Botan::ECDSA_PublicKey::recovery_param	(	const std::vector< uint8_t > &	msg,
		const BigInt &	r,
		const BigInt &	s
	)		const

inherited

Definition at line 92 of file ecdsa.cpp.

References Botan::EC_PublicKey::domain(), and Botan::EC_PublicKey::public_point().

    {
    for(uint8_t v = 0; v != 4; ++v)
       {
       try
          {
          PointGFp R = recover_ecdsa_public_key(this->domain(), msg, r, s, v);
 
          if(R == this->public_point())
             {
             return v;
             }
          }
       catch(Decoding_Error&)
          {
          // try the next v
          }
       }
 
    throw Internal_Error("Could not determine ECDSA recovery parameter");
    }

◆ set_parameter_encoding()

void Botan::EC_PublicKey::set_parameter_encoding ( EC_Group_Encoding enc )

inherited

Set the domain parameter encoding to be used when encoding this key.

Parameters

enc	the encoding to use

Definition at line 84 of file ecc_key.cpp.

References Botan::EC_DOMPAR_ENC_EXPLICIT, Botan::EC_DOMPAR_ENC_IMPLICITCA, Botan::EC_DOMPAR_ENC_OID, Botan::OID::empty(), Botan::EC_Group::get_curve_oid(), Botan::EC_PublicKey::m_domain_encoding, and Botan::EC_PublicKey::m_domain_params.

    {
    if(form != EC_DOMPAR_ENC_EXPLICIT &&
       form != EC_DOMPAR_ENC_IMPLICITCA &&
       form != EC_DOMPAR_ENC_OID)
       throw Invalid_Argument("Invalid encoding form for EC-key object specified");
 
    if((form == EC_DOMPAR_ENC_OID) && (m_domain_params.get_curve_oid().empty()))
       throw Invalid_Argument("Invalid encoding form OID specified for "
                              "EC-key object whose corresponding domain "
                              "parameters are without oid");
 
    m_domain_encoding = form;
    }

◆ set_point_encoding()

void Botan::EC_PublicKey::set_point_encoding ( PointGFp::Compression_Type enc )

inherited

Set the point encoding method to be used when encoding this key.

Parameters

enc	the encoding to use

Definition at line 74 of file ecc_key.cpp.

References Botan::PointGFp::COMPRESSED, Botan::PointGFp::HYBRID, Botan::EC_PublicKey::m_point_encoding, and Botan::PointGFp::UNCOMPRESSED.

    {
    if(enc != PointGFp::COMPRESSED &&
       enc != PointGFp::UNCOMPRESSED &&
       enc != PointGFp::HYBRID)
       throw Invalid_Argument("Invalid point encoding for EC_PublicKey");
 
    m_point_encoding = enc;
    }

◆ 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_domain_encoding

EC_Group_Encoding Botan::EC_PublicKey::m_domain_encoding

protectedinherited

Definition at line 116 of file ecc_key.h.

Referenced by Botan::EC_PrivateKey::EC_PrivateKey(), Botan::EC_PublicKey::EC_PublicKey(), and Botan::EC_PublicKey::set_parameter_encoding().

◆ m_domain_params

EC_Group Botan::EC_PublicKey::m_domain_params

protectedinherited

Definition at line 114 of file ecc_key.h.

Referenced by Botan::EC_PublicKey::check_key(), Botan::EC_PrivateKey::EC_PrivateKey(), Botan::GOST_3410_PublicKey::GOST_3410_PublicKey(), and Botan::EC_PublicKey::set_parameter_encoding().

◆ m_point_encoding

PointGFp::Compression_Type Botan::EC_PublicKey::m_point_encoding = PointGFp::UNCOMPRESSED

protectedinherited

Definition at line 117 of file ecc_key.h.

Referenced by Botan::EC_PublicKey::set_point_encoding().

◆ m_private_key

BigInt Botan::EC_PrivateKey::m_private_key

protectedinherited

Definition at line 167 of file ecc_key.h.

Referenced by Botan::EC_PrivateKey::EC_PrivateKey(), Botan::EC_PrivateKey::private_key_bits(), Botan::EC_PrivateKey::private_value(), and Botan::SM2_PrivateKey::SM2_PrivateKey().

◆ m_public_key

PointGFp Botan::EC_PublicKey::m_public_key

protectedinherited

Definition at line 115 of file ecc_key.h.

Referenced by Botan::EC_PrivateKey::EC_PrivateKey(), Botan::GOST_3410_PublicKey::GOST_3410_PublicKey(), and Botan::EC_PrivateKey::private_key_bits().

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

src/lib/pubkey/ecdsa/ecdsa.h
src/lib/pubkey/ecdsa/ecdsa.cpp

Public Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ ECDSA_PrivateKey() [1/2]

◆ ECDSA_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()

◆ DER_domain()

◆ domain()

◆ domain_format()

◆ estimated_strength()

◆ fingerprint()

◆ fingerprint_private()

◆ fingerprint_public()

◆ get_oid()

◆ key_length()

◆ message_part_size()

◆ message_parts()

◆ pkcs8_algorithm_identifier()

◆ point_encoding()

◆ private_key_bits()

◆ private_key_info()

◆ private_value()

◆ public_key_bits()

◆ public_point()

◆ recovery_param()

◆ set_parameter_encoding()

◆ set_point_encoding()

◆ subject_public_key()

Member Data Documentation

◆ m_domain_encoding

◆ m_domain_params

◆ m_point_encoding

◆ m_private_key

◆ m_public_key