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Contents
module BTC
class TestSignatureChecker
include SignatureChecker
def initialize(signature_hash: nil, timestamp: nil)
@signature_hash = signature_hash
@timestamp = timestamp
end
# for testing check_signature
def signature_hash
@signature_hash
end
# for testing check_lock_time
def timestamp
@timestamp
end
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
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
end
end
Version data entries
13 entries across 13 versions & 1 rubygems