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Topic: Vulnerable signatures? (ECDSA) (Read 353 times)

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Activity: 211
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February 16, 2021, 02:02:13 PM
#1
If another person knows that the private key used to generate the second signature is x * 10 of the private key of the first signature ... Are signatures vulnerable?

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sig = 1
3045022100dcf17de661e280dbf62e03ef1655d1baaabc301da9fc6b29a63e52e7780c115d02202 0be91ddd5598e22fa43014172df5312275fbdb462a2e9855c7a7433138a4a9c01

Public key: 02c811f01a6182c8f6641fa692a997eebe4ea4241ead22bb3b98ae43e9d32fd32b

h(m): bb1e00d2027efd3085b83de2a3602a8ea49e0c9d5b821cd6291d5feefd410303

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sig = 2
3044022044f8904211c91b3aac9c63279c5a9ab5d7b8175a2eeeed858b146c86999b46700220428 10a2092637f418b2c9ff786eb1c393623b40a0a7e2c29509168480f0397df01


Public key: 0273598a3687ecbd87c53a5866182da9750622bb29374cf950e102edeefb05da16

h(m): 3be295398c9e7048e32c7a30d413f82d7f8b3029ab37d110181744fe0acab452

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