Comment on Here’s who probably did that $150 million Bitcoin transactionparentComments−maaku12yNo. What the GP is quoting is "security bits" a measure explicitly designed to mitigate that difference. Bitcoin addresses have 160 bits of security, 128 bits if the public key is known. This is directly comparable to symmetric key sizes.−mikeash12yThanks for clarifying that. The mismatch between the key size quoted and what's used in Bitcoin should have tipped me off.
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No. What the GP is quoting is "security bits" a measure explicitly designed to mitigate that difference. Bitcoin addresses have 160 bits of security, 128 bits if the public key is known. This is directly comparable to symmetric key sizes.
Thanks for clarifying that. The mismatch between the key size quoted and what's used in Bitcoin should have tipped me off.