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# frozen_string_literal: true
module JWT
module Claims
# The IssuedAt class is responsible for validating the issued at claim ('iat') in a JWT token.
class IssuedAt
# Verifies the issued at claim ('iat') in the JWT token.
#
# @param context [Object] the context containing the JWT payload.
# @param _args [Hash] additional arguments (not used).
# @raise [JWT::InvalidIatError] if the issued at claim is invalid.
# @return [nil]
def verify!(context:, **_args)
return unless context.payload.is_a?(Hash)
return unless context.payload.key?('iat')
iat = context.payload['iat']
raise(JWT::InvalidIatError, 'Invalid iat') if !iat.is_a?(::Numeric) || iat.to_f > Time.now.to_f
end
end
end
end
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