KaneAI - World’s First E2E Software Testing Agent.Book a Demo Join TestMu Conference

How to use fail_with_msg method in pandera

Best Python code snippet using pandera_python

pyaescrypt.py

Source:pyaescrypt.py

...23    with open(path, "rb") as fIn:24        fdata = fIn.read(3)25        # check if file is in AES Crypt format (also min length check)26        if fdata != bytes("AES", "utf8") or os.stat(path).st_size < 136:27            fail_with_msg("Error: file is corrupted or " +28                "not an AES Crypt (or pyAesCrypt) file.")29        # check if file is in AES Crypt format, version 230        # (the only one compatible with pyAesCrypt)31        fdata = fIn.read(1)32        if len(fdata) < 1:33            fail_with_msg("Error: file is corrupted.")34        if fdata != b"\x02":35            fail_with_msg("Error: pyAesCrypt is only compatible with version 2 of the " +36                "AES Crypt file format.")37        # skip reserved byte38        fIn.read(1)39        # skip all the extensions40        while True:41            fdata = fIn.read(2)42            if len(fdata) < 2:43                fail_with_msg("Error: file is corrupted.")44            if fdata == b"\x00\x00":45                break46            fIn.read(int.from_bytes(fdata, byteorder="big"))47        # read external iv48        iv1 = fIn.read(16)49        if len(iv1) < 16:50            fail_with_msg("Error: file is corrupted.")51        # stretch password and iv52        key=pyAesCryptStretch(passw, iv1)53        # read encrypted main iv and key54        c_iv_key = fIn.read(48)55        if len(c_iv_key) < 48:56            fail_with_msg("Error: file is corrupted.")57        # read HMAC-SHA256 of the encrypted iv and key58        hmac1 = fIn.read(32)59        if len(hmac1) < 32:60            fail_with_msg("Error: file is corrupted.")61        # compute actual HMAC-SHA256 of the encrypted iv and key62        hmac1Act = HMAC.new(key, digestmod=SHA256)63        hmac1Act.update(c_iv_key)64        # HMAC check65        if hmac1 != hmac1Act.digest():66            fail_with_msg("Error: wrong password (or file is corrupted).")67        # instantiate AES cipher68        cipher1 = AES.new(key, AES.MODE_CBC, iv1)69        # decrypt main iv and key70        iv_key = cipher1.decrypt(c_iv_key)71        # get internal iv and key72        iv0 = iv_key[:16]73        intKey = iv_key[16:]74        # instantiate another AES cipher75        cipher0 = AES.new(intKey, AES.MODE_CBC, iv0)76        # instantiate actual HMAC-SHA256 of the ciphertext77        hmac0Act = HMAC.new(intKey, digestmod=SHA256)78        # decrypt ciphertext in large pieces first, then smaller pieces79        sizeInputFile = os.stat(path).st_size80        for currentBufferSize in [64*64*AES.block_size, 64*AES.block_size, AES.block_size]:81            assert 0 == currentBufferSize % AES.block_size82            while fIn.tell() < sizeInputFile - 32 - 1 - currentBufferSize:83                # read data84                cText = fIn.read(currentBufferSize)85                # update HMAC86                hmac0Act.update(cText)87                # decrypt data88                if fncallback:89                    fncallback(cipher0.decrypt(cText))90                else:91                    outbytes += bytearray(cipher0.decrypt(cText))92        # last block reached, remove padding if needed93        # read last block94        if fIn.tell() != os.stat(path).st_size - 32 - 1:  # this is for empty files95            cText = fIn.read(AES.block_size)96            if len(cText) < AES.block_size:97                fail_with_msg("Error: file is corrupted.")98        else:99            cText = bytes()100        # update HMAC101        hmac0Act.update(cText)102        # read plaintext file size mod 16 lsb positions103        fs16 = fIn.read(1)104        if len(fs16) < 1:105            fail_with_msg("Error: file is corrupted.")106        # decrypt last block107        pText = cipher0.decrypt(cText)108        # remove padding109        toremove=((16-fs16[0])%16)110        if toremove != 0:111            pText=pText[:-toremove]112        if fncallback:113            fncallback(pText)114        else:115            outbytes += bytearray(pText)116        # read HMAC-SHA256 of the encrypted file117        hmac0 = fIn.read(32)118        if len(hmac0) < 32:119            fail_with_msg("Error: file is corrupted.")120        # HMAC check121        if hmac0 != hmac0Act.digest():122            fail_with_msg("Error: bad HMAC (file is corrupted).")123    return outbytes124def pyAesCryptStretch(passw, iv1):125    # hash the external iv and the password 8192 times126    from Crypto.Hash import SHA256127    digest=iv1+(16*b"\x00")128    for _ in range(8192):129        passHash=SHA256.new()130        passHash.update(digest)131        passHash.update(bytes(passw,"utf_16_le"))132        digest=passHash.digest()133    return digest134def fail_with_msg(s):135    print(s)...

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.