Class: BTC::TestSignatureChecker

Inherits:
Object
  • Object
show all
Includes:
SignatureChecker
Defined in:
lib/btcruby/script/test_signature_checker.rb

Instance Method Summary collapse

Constructor Details

#initialize(signature_hash: nil, timestamp: nil) ⇒ TestSignatureChecker

Returns a new instance of TestSignatureChecker.



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# File 'lib/btcruby/script/test_signature_checker.rb', line 5

def initialize(signature_hash: nil, timestamp: nil)
  @signature_hash = signature_hash
  @timestamp = timestamp
end

Instance Method Details

#check_lock_time(lock_time) ⇒ Object 



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# File 'lib/btcruby/script/test_signature_checker.rb', line 32

def check_lock_time(lock_time)
  # There are two times of nLockTime: lock-by-blockheight
  # and lock-by-blocktime, distinguished by whether
  # nLockTime < LOCKTIME_THRESHOLD.
  #
  # We want to compare apples to apples, so fail the script
  # if the type of nLockTime being tested is not the same as
  # the nLockTime in the transaction.
  if !(
       (timestamp <  LOCKTIME_THRESHOLD && lock_time <  LOCKTIME_THRESHOLD) ||
       (timestamp >= LOCKTIME_THRESHOLD && lock_time >= LOCKTIME_THRESHOLD)
   )
    return false
  end

  # Now that we know we're comparing apples-to-apples, the
  # comparison is a simple numeric one.
  return timestamp >= lock_time
end

#check_signature(script_signature: nil, public_key: nil, script: nil) ⇒ Object 



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# File 'lib/btcruby/script/test_signature_checker.rb', line 20

def check_signature(script_signature:nil, public_key:nil, script:nil)
  # Signature must be long enough to contain a sighash byte.
  return false if script_signature.size < 1
  
  # Extract raw ECDSA signature by stripping off the last hashtype byte
  ecdsa_sig = script_signature[0..-2]

  key = BTC::Key.new(public_key: public_key)
  result = key.verify_ecdsa_signature(ecdsa_sig, hash)
  return result
end

#signature_hash ⇒ Object

for testing check_signature



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# File 'lib/btcruby/script/test_signature_checker.rb', line 11

def signature_hash
  @signature_hash
end

#timestamp ⇒ Object

for testing check_lock_time



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# File 'lib/btcruby/script/test_signature_checker.rb', line 16

def timestamp
  @timestamp
end