Python writing an int while in wb mode

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I want to write to a file in "wb", but I want the first line to be an int with a new line. Here is my code

def encrypt_file(plaintext_file_name, ciphertext_file_name, e, n, block_size, pad = None):



    plaintext = open(plaintext_file_name, "rb")



    # Generates pad if there is no pad

    if pad == None:

        pad = generate_pad(block_size)



    pad = bytes_to_int(pad)

    encrypted_pad = int_to_bytes(modular_exponentiation(pad, e, n), block_size)



    ciphertext = open(ciphertext_file_name, "wb")



    ciphertext.write(str(pad)+"/n")



    ciphertext.write(encrypted_pad)



    block = plaintext.read(block_size)



    while len(block) > 0:

        ciphertext.write(xor_block(encrypted_pad, block))

        block = plaintext.read(block_size)



    plaintext.close()

    ciphertext.close()

TypeError: a bytes-like object is required, not 'str'

edited Nov 12 at 5:07

Andreas

1,8051618

asked Nov 12 at 4:32

Alex Rodriguez

add a comment |

up vote
-1
down vote

favorite

I want to write to a file in "wb", but I want the first line to be an int with a new line. Here is my code

def encrypt_file(plaintext_file_name, ciphertext_file_name, e, n, block_size, pad = None):



    plaintext = open(plaintext_file_name, "rb")



    # Generates pad if there is no pad

    if pad == None:

        pad = generate_pad(block_size)



    pad = bytes_to_int(pad)

    encrypted_pad = int_to_bytes(modular_exponentiation(pad, e, n), block_size)



    ciphertext = open(ciphertext_file_name, "wb")



    ciphertext.write(str(pad)+"/n")



    ciphertext.write(encrypted_pad)



    block = plaintext.read(block_size)



    while len(block) > 0:

        ciphertext.write(xor_block(encrypted_pad, block))

        block = plaintext.read(block_size)



    plaintext.close()

    ciphertext.close()

TypeError: a bytes-like object is required, not 'str'

edited Nov 12 at 5:07

Andreas

1,8051618

asked Nov 12 at 4:32

Alex Rodriguez

add a comment |

up vote
-1
down vote

favorite

I want to write to a file in "wb", but I want the first line to be an int with a new line. Here is my code

def encrypt_file(plaintext_file_name, ciphertext_file_name, e, n, block_size, pad = None):



    plaintext = open(plaintext_file_name, "rb")



    # Generates pad if there is no pad

    if pad == None:

        pad = generate_pad(block_size)



    pad = bytes_to_int(pad)

    encrypted_pad = int_to_bytes(modular_exponentiation(pad, e, n), block_size)



    ciphertext = open(ciphertext_file_name, "wb")



    ciphertext.write(str(pad)+"/n")



    ciphertext.write(encrypted_pad)



    block = plaintext.read(block_size)



    while len(block) > 0:

        ciphertext.write(xor_block(encrypted_pad, block))

        block = plaintext.read(block_size)



    plaintext.close()

    ciphertext.close()

TypeError: a bytes-like object is required, not 'str'

edited Nov 12 at 5:07

Andreas

1,8051618

asked Nov 12 at 4:32

Alex Rodriguez

I want to write to a file in "wb", but I want the first line to be an int with a new line. Here is my code

def encrypt_file(plaintext_file_name, ciphertext_file_name, e, n, block_size, pad = None):



    plaintext = open(plaintext_file_name, "rb")



    # Generates pad if there is no pad

    if pad == None:

        pad = generate_pad(block_size)



    pad = bytes_to_int(pad)

    encrypted_pad = int_to_bytes(modular_exponentiation(pad, e, n), block_size)



    ciphertext = open(ciphertext_file_name, "wb")



    ciphertext.write(str(pad)+"/n")



    ciphertext.write(encrypted_pad)



    block = plaintext.read(block_size)



    while len(block) > 0:

        ciphertext.write(xor_block(encrypted_pad, block))

        block = plaintext.read(block_size)



    plaintext.close()

    ciphertext.close()

TypeError: a bytes-like object is required, not 'str'

python arrays python-3.x byte

edited Nov 12 at 5:07

Andreas

1,8051618

asked Nov 12 at 4:32

Alex Rodriguez

edited Nov 12 at 5:07

Andreas

1,8051618

asked Nov 12 at 4:32

Alex Rodriguez

edited Nov 12 at 5:07

Andreas

1,8051618

edited Nov 12 at 5:07

Andreas

1,8051618

edited Nov 12 at 5:07

Andreas

1,8051618

asked Nov 12 at 4:32

Alex Rodriguez

asked Nov 12 at 4:32

Alex Rodriguez

asked Nov 12 at 4:32

Alex Rodriguez

add a comment |

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