Stanko K.R.
4bb0a2929c
- Add a CBOR decoder - Add public key credential options - Add COSE key decoder - Add authenticator attestation and assertion - Add credentials - Add exclude_credentials
59 lines
1.8 KiB
Ruby
59 lines
1.8 KiB
Ruby
# = Action Pack WebAuthn Attestation
|
|
#
|
|
# Decodes and represents the attestation object returned by an authenticator
|
|
# during registration. The attestation object is CBOR-encoded and contains
|
|
# the authenticator data along with an optional attestation statement.
|
|
#
|
|
# == Usage
|
|
#
|
|
# attestation = ActionPack::WebAuthn::Authenticator::Attestation.decode(
|
|
# attestation_object_bytes
|
|
# )
|
|
#
|
|
# attestation.credential_id # => "abc123..."
|
|
# attestation.public_key # => OpenSSL::PKey::EC
|
|
# attestation.sign_count # => 0
|
|
#
|
|
# == Attributes
|
|
#
|
|
# [+authenticator_data+]
|
|
# The parsed Data containing credential information.
|
|
#
|
|
# [+format+]
|
|
# The attestation statement format (e.g., "none", "packed", "fido-u2f").
|
|
#
|
|
# [+attestation_statement+]
|
|
# The attestation statement, which may contain a signature from the
|
|
# authenticator manufacturer. Empty for "none" format.
|
|
#
|
|
# == Delegated Methods
|
|
#
|
|
# The following methods are delegated to +authenticator_data+:
|
|
#
|
|
# * +credential_id+ - Base64URL-encoded credential identifier
|
|
# * +public_key+ - OpenSSL public key object
|
|
# * +public_key_bytes+ - Raw COSE key bytes
|
|
# * +sign_count+ - Signature counter for replay detection
|
|
#
|
|
class ActionPack::WebAuthn::Authenticator::Attestation
|
|
attr_reader :authenticator_data, :format, :attestation_statement
|
|
|
|
delegate :credential_id, :public_key, :public_key_bytes, :sign_count, to: :authenticator_data
|
|
|
|
def self.decode(bytes)
|
|
cbor = ActionPack::WebAuthn::CborDecoder.decode(bytes)
|
|
|
|
new(
|
|
authenticator_data: ActionPack::WebAuthn::Authenticator::Data.decode(cbor["authData"]),
|
|
format: cbor["fmt"],
|
|
attestation_statement: cbor["attStmt"]
|
|
)
|
|
end
|
|
|
|
def initialize(authenticator_data:, format:, attestation_statement:)
|
|
@authenticator_data = authenticator_data
|
|
@format = format
|
|
@attestation_statement = attestation_statement
|
|
end
|
|
end
|