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First of all, a 1024-bit RSA key is much too small for comfort. Current recommendations for RSA are a debate between 3072 or 4096 (better security margin) vs. 2048 (better performance). See:


The 1024 bit number on the key describes the modulus used as part of encryption and decryption of a message (see, which is paired with a public exponent for the public key and a private exponent for the private key - effectively, the message is first taken to the power of the public exponent e or the private ...

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