Key length and PK algorithm of TOR

[CAN Consulting]

Hello,


two questions.

1) is there a specific reason why TOR does use RSA with
a keylength of only 1024 Bit?

2) is there a specific reason why TOR does not use ECC,
which is more secure (with reasonable curve parameters and same
key length like RSA) *and* uses less or, depending on the
ECC algorithm, at least not significantly more CPU cycles than RSA?


Best regards,

cc
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