16 lines
459 B
Python
16 lines
459 B
Python
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import sys
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def pkcs7_padding(data):
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block_size = 16 # AES block size in bytes
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padding_required = block_size - (len(data) % block_size)
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padding = chr(padding_required).encode() * padding_required
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return str.encode(data) + padding
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plaintext = str(sys.argv[1])
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# Apply PKCS7 padding
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padded_plaintext = pkcs7_padding(plaintext)
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# Output the padded plaintext to stdout so it can be piped into OpenSSL
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sys.stdout.buffer.write(padded_plaintext)
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