Class: PQCrypto::KEM::PublicKey

Inherits:

Object

• Object
• PQCrypto::KEM::PublicKey

Defined in:

lib/pq_crypto/kem.rb

Direct Known Subclasses

HybridKEM::PublicKey

Instance Attribute Summary

• #algorithm ⇒ Object readonly

  Returns the value of attribute algorithm.

Instance Method Summary

• #==(other) ⇒ Object (also: #eql?)
• #encapsulate ⇒ Object
• #encapsulate_to_bytes ⇒ Object
• #fingerprint ⇒ Object
• #hash ⇒ Object
• #initialize(algorithm, bytes) ⇒ PublicKey constructor

  A new instance of PublicKey.

• #to_bytes ⇒ Object
• #to_pqc_container_der ⇒ Object
• #to_pqc_container_pem ⇒ Object
• #to_spki_der ⇒ Object
• #to_spki_pem ⇒ Object

Constructor Details

#initialize(algorithm, bytes) ⇒ PublicKey

Returns a new instance of PublicKey.

# File 'lib/pq_crypto/kem.rb', line 159

def initialize(algorithm, bytes)
  @algorithm = algorithm
  @bytes = String(bytes).b
  validate_length!
end

Instance Attribute Details

#algorithm ⇒ Object (readonly)

Returns the value of attribute algorithm.

# File 'lib/pq_crypto/kem.rb', line 157

def algorithm
  @algorithm
end

Instance Method Details

#==(other) ⇒ Object Also known as: eql?

# File 'lib/pq_crypto/kem.rb', line 197

def ==(other)
  return false unless other.is_a?(PublicKey) && other.algorithm == algorithm
  PQCrypto.__send__(:native_ct_equals, other.send(:bytes_for_native), @bytes)
end

#encapsulate ⇒ Object

# File 'lib/pq_crypto/kem.rb', line 185

def encapsulate
  ciphertext, shared_secret = PQCrypto.__send__(KEM.send(:native_method_for, @algorithm, :encapsulate), @bytes)
  EncapsulationResult.new(ciphertext, shared_secret)
rescue ArgumentError => e
  raise InvalidKeyError, e.message
end

#encapsulate_to_bytes ⇒ Object

# File 'lib/pq_crypto/kem.rb', line 192

def encapsulate_to_bytes
  result = encapsulate
  [result.ciphertext, result.shared_secret]
end

#fingerprint ⇒ Object

# File 'lib/pq_crypto/kem.rb', line 208

def fingerprint
  Digest::SHA256.digest(@bytes)
end

#hash ⇒ Object

# File 'lib/pq_crypto/kem.rb', line 204

def hash
  fingerprint.hash
end

#to_bytes ⇒ Object

# File 'lib/pq_crypto/kem.rb', line 165

def to_bytes
  @bytes.dup
end

#to_pqc_container_der ⇒ Object

# File 'lib/pq_crypto/kem.rb', line 169

def to_pqc_container_der
  Serialization.public_key_to_pqc_container_der(@algorithm, @bytes)
end

#to_pqc_container_pem ⇒ Object

# File 'lib/pq_crypto/kem.rb', line 173

def to_pqc_container_pem
  Serialization.public_key_to_pqc_container_pem(@algorithm, @bytes)
end

#to_spki_der ⇒ Object

# File 'lib/pq_crypto/kem.rb', line 177

def to_spki_der
  SPKI.encode_der(@algorithm, @bytes)
end

#to_spki_pem ⇒ Object

# File 'lib/pq_crypto/kem.rb', line 181

def to_spki_pem
  SPKI.encode_pem(@algorithm, @bytes)
end