# Path: parser/stpcommands.py
# def blockCharacteristic(stpfile, characteristic, wordsize):
# def setupQuery(stpfile):
# def setupVariables(stpfile, variables, wordsize):
# def assertVariableValue(stpfile, a, b):
# def getStringForVariables(variables, wordsize):
# def assertNonZero(stpfile, variables, wordsize):
# def getStringForNonZero(variables, wordsize):
# def limitWeight(stpfile, weight, p, wordsize, ignoreMSBs=0):
# def setupWeightComputationSum(stpfile, weight, p, wordsize, ignoreMSBs=0):
# def setupWeightComputation(stpfile, weight, p, wordsize, ignoreMSBs=0):
# def getWeightString(variables, wordsize, ignoreMSBs=0, weightVariable="weight"):
# def getStringEq(a, b, c):
# def getStringAdd(a, b, c, wordsize):
# def getStringForAndDifferential(a, b, c):
# def getStringLeftRotate(value, rotation, wordsize):
# def getStringRightRotate(value, rotation, wordsize):
# def add4bitSbox(sbox, variables):
#     DDT = [[0]*16 for i in range(16)]
# 
# Path: ciphers/cipher.py
# class AbstractCipher(object, metaclass=ABCMeta):
#     """
#     Abstract Class for Ciphers
#     """
# 
#     @abstractmethod
#     def createSTP(self, filename, cipherParameters):
#         """
#         Each cipher need to define how it creates an instance for the
#         SMT solver.
#         """
#         pass
# 
#     @abstractmethod
#     def getFormatString(self):
#         """
#         Each cipher needs to specify the format it should be printed.
#         """
#         pass
# 
# Path: parser/stpcommands.py
# def getStringLeftRotate(value, rotation, wordsize):
#     if rotation % wordsize == 0:
#         return "{0}".format(value)
#     command = "((({0} << {1})[{2}:0]) | (({0} >> {3})[{2}:0]))".format(
#         value, (rotation % wordsize), wordsize - 1, (wordsize - rotation) % wordsize)
# 
#     return command


from parser import stpcommands
from ciphers.cipher import AbstractCipher
from parser.stpcommands import getStringLeftRotate as rotl
                stpcommands.blockCharacteristic(stp_file, char, wordsize)

            stpcommands.setupQuery(stp_file)

        return

    def setupQuarterRound(self, stp_file, a, tmp, c, w, wordsize):
        """
        ChaCha quarter round:
            (c0, c1, c2, c3) = Quarterround(a0, a1, a2, a3)
        """
        command = ""
        # a += b
        command += "ASSERT({});\n".format(
            stpcommands.getStringAdd(a[0], a[1], tmp[0], wordsize))

        command += "ASSERT({} = ~{});\n".format(w[0],
            stpcommands.getStringEq(a[0], a[1], tmp[0]))

        # d ^= a; d <<<= 16; (a = tmp[0] after last step)
        d = rotl("BVXOR({}, {})".format(tmp[0], a[3]), 16, wordsize)

        # c += d;
        command += "ASSERT({});\n".format(
            stpcommands.getStringAdd(a[2], d, tmp[1], wordsize))

        command += "ASSERT({} = ~{});\n".format(w[1],
            stpcommands.getStringEq(a[2], d, tmp[1]))

        # b ^= c; b <<<= 12; (c = tmp[1] after last step)

# Path: parser/stpcommands.py
# def blockCharacteristic(stpfile, characteristic, wordsize):
# def setupQuery(stpfile):
# def setupVariables(stpfile, variables, wordsize):
# def assertVariableValue(stpfile, a, b):
# def getStringForVariables(variables, wordsize):
# def assertNonZero(stpfile, variables, wordsize):
# def getStringForNonZero(variables, wordsize):
# def limitWeight(stpfile, weight, p, wordsize, ignoreMSBs=0):
# def setupWeightComputationSum(stpfile, weight, p, wordsize, ignoreMSBs=0):
# def setupWeightComputation(stpfile, weight, p, wordsize, ignoreMSBs=0):
# def getWeightString(variables, wordsize, ignoreMSBs=0, weightVariable="weight"):
# def getStringEq(a, b, c):
# def getStringAdd(a, b, c, wordsize):
# def getStringForAndDifferential(a, b, c):
# def getStringLeftRotate(value, rotation, wordsize):
# def getStringRightRotate(value, rotation, wordsize):
# def add4bitSbox(sbox, variables):
#     DDT = [[0]*16 for i in range(16)]
# 
# Path: ciphers/cipher.py
# class AbstractCipher(object, metaclass=ABCMeta):
#     """
#     Abstract Class for Ciphers
#     """
# 
#     @abstractmethod
#     def createSTP(self, filename, cipherParameters):
#         """
#         Each cipher need to define how it creates an instance for the
#         SMT solver.
#         """
#         pass
# 
#     @abstractmethod
#     def getFormatString(self):
#         """
#         Each cipher needs to specify the format it should be printed.
#         """
#         pass
# 
# Path: parser/stpcommands.py
# def getStringLeftRotate(value, rotation, wordsize):
#     if rotation % wordsize == 0:
#         return "{0}".format(value)
#     command = "((({0} << {1})[{2}:0]) | (({0} >> {3})[{2}:0]))".format(
#         value, (rotation % wordsize), wordsize - 1, (wordsize - rotation) % wordsize)
# 
#     return command


# Path: ciphers/chacha.py
from parser import stpcommands
from ciphers.cipher import AbstractCipher
from parser.stpcommands import getStringLeftRotate as rotl

                stpcommands.blockCharacteristic(stp_file, char, wordsize)

            stpcommands.setupQuery(stp_file)

        return

    def setupQuarterRound(self, stp_file, a, tmp, c, w, wordsize):
        """
        ChaCha quarter round:
            (c0, c1, c2, c3) = Quarterround(a0, a1, a2, a3)
        """
        command = ""
        # a += b
        command += "ASSERT({});\n".format(
            stpcommands.getStringAdd(a[0], a[1], tmp[0], wordsize))

        command += "ASSERT({} = ~{});\n".format(w[0],
            stpcommands.getStringEq(a[0], a[1], tmp[0]))

        # d ^= a; d <<<= 16; (a = tmp[0] after last step)
        d = rotl("BVXOR({}, {})".format(tmp[0], a[3]), 16, wordsize)

        # c += d;
        command += "ASSERT({});\n".format(
            stpcommands.getStringAdd(a[2], d, tmp[1], wordsize))

        command += "ASSERT({} = ~{});\n".format(w[1],
            stpcommands.getStringEq(a[2], d, tmp[1]))

        # b ^= c; b <<<= 12; (c = tmp[1] after last step)

        b = rotl("BVXOR({}, {})".format(a[1], tmp[1]), 12, wordsize)