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Crypt-Bear-0.003
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/ Crypt::Bear::EC::PrivateKey

NAME

Crypt::Bear::EC::PrivateKey - An EC private key in BearSSL

VERSION

version 0.003

SYNOPSIS

my $private_key = Crypt::Bear::EC::PrivateKey->generate('secp256r1', $prng); my $signature = $private_key->ecdsa_sign('sha256', $hash); my $shared = $private_key->ecdh_key_exchange($some_public_key);

DESCRIPTION

This represents a elliptic curve private key. The curve type can be one of the following:

  • 'sect163k1'

  • 'sect163r1'

  • 'sect163r2'

  • 'sect193r1'

  • 'sect193r2'

  • 'sect233k1'

  • 'sect233r1'

  • 'sect239k1'

  • 'sect283k1'

  • 'sect283r1'

  • 'sect409k1'

  • 'sect409r1'

  • 'sect571k1'

  • 'sect571r1'

  • 'secp160k1'

  • 'secp160r1'

  • 'secp160r2'

  • 'secp192k1'

  • 'secp192r1'

  • 'secp224k1'

  • 'secp224r1'

  • 'secp256k1'

  • 'secp256r1'

  • 'secp384r1'

  • 'secp521r1'

  • 'brainpoolP256r1'

  • 'brainpoolP384r1'

  • 'brainpoolP512r1'

  • 'curve25519'

  • 'curve448'

Common values include 'curve25519', 'curve448', 'secp256r1', 'secp384r1', 'secp521r1'.

METHODS

new($curve, $point)

This returns a new private key representing the given $point on $curve.

generate($curve, $prng)

This class method generates a new private key on $curve, using a Crypt::Bear::PRNG to do so.

ecdsa_sign($hash_type, $hash_value)

This signs a hash using ecdsa. Currently this is only supported with 'secp256r1', 'secp384r1' and 'secp521r1'.

ecdh_key_exchange($public_key)

This does a diffie-hellman key exchange with the given public key, and returns the result.

public_key()

This generates the public key matching this private key.

curve()

This returns the curve of this private key.

AUTHOR

Leon Timmermans <fawaka@gmail.com>

COPYRIGHT AND LICENSE

This software is copyright (c) 2024 by Leon Timmermans.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.