Application Security - each one, teach one

Richard Lewis' application security notes for the software designer, developer and tester

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  • Blog Post: Understanding 'padding' in symmetric key cryptography

    Symmetric key algorithms like 3DES, AES etc operate on blocks of input data. For this to happen, the length of the input data must be exactly equal to the block length or an integral multiple of the block length for that algorithm. For example, let us take AES 128-bit encryption. Lets say the block length...
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