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Author Topic: Encrypt/Decrypt arbitrary text using bitcoin keys?  (Read 4205 times)
etotheipi
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August 07, 2011, 11:31:50 PM
 #21

So I misread the specification originally: NIST and SECG actually make no reference to encryption/decryption or signing/verification in their specification:

"NIST Recommended Elliptic Curves for Government Use"
http://csrc.nist.gov/groups/ST/toolkit/documents/dss/NISTReCur.pdf

and

"SEC 2: Recommended Elliptic Curve Domain Parameters"
http://www.secg.org/collateral/sec2_final.pdf  (secp256k1 defined here)

They simply recommend elliptic curves and provide the associated parameters needed for implementation.  These curves can be used with any EC-based algorithms, including ECDSA and ECIES.

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Once a transaction has 6 confirmations, it is extremely unlikely that an attacker without at least 50% of the network's computation power would be able to reverse it.
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February 16, 2013, 10:58:55 PM
 #22

Has anybody given some more thought to this?

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February 19, 2013, 08:13:13 AM
 #23

Has anybody given some more thought to this?
As it turns out, yes.

https://bitcointalk.org/index.php?topic=128230 (PyBitmessage)

https://bitcointalk.org/index.php?topic=145098 (three lines python script using PyBitmessage libs)

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