scrypt/tests/04-force-resources.sh

#!/bin/sh

### Constants
c_valgrind_min=1
reference_file="${scriptdir}/verify-strings/test_scrypt.good"
longwait_encrypted_file="${s_basename}.enc"
longwait_decrypted_file="${s_basename}.txt"
longwait_failed_log="${s_basename}-failed.log"

scenario_cmd() {
	# Encrypt file which should take a long time to decrypt.
	setup_check "scrypt enc 10 seconds"
	(
		echo "${password}" | ${c_valgrind_cmd} "${bindir}/scrypt" \
			enc -P -t 10 "${reference_file}"		\
			"${longwait_encrypted_file}"
		echo $? > "${c_exitfile}"
	)

	# Attempt to decrypt it with limited time.  We want this
	# command to fail, so we negate the normal return code.
	setup_check "scrypt dec 1 second"
	(
		echo "${password}" | ${c_valgrind_cmd} "${bindir}/scrypt" \
			dec -P -t 1 "${longwait_encrypted_file}"	\
			"${longwait_decrypted_file}"			\
			2> "${longwait_failed_log}"
		expected_exitcode 1 $? > "${c_exitfile}"
	)

	# We should have received an error message.
	setup_check "scrypt dec 1 second error"
	grep -q "scrypt: Decrypting file would take too much CPU time" \
	    "${longwait_failed_log}"
	echo "$?" > "${c_exitfile}"

	# Attempt to decrypt it with limited time, but force success.
	setup_check "scrypt dec force"
	(
		echo "${password}" | ${c_valgrind_cmd} "${bindir}/scrypt" \
			dec -P -t 1 -f "${longwait_encrypted_file}"	\
			"${longwait_decrypted_file}"
		echo $? > "${c_exitfile}"
	)

	# The decrypted reference file should match the reference.
	setup_check "scrypt dec force output against reference"
	cmp -s "${longwait_decrypted_file}" "${reference_file}"
	echo $? > "${c_exitfile}"
}