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Re:The first chosen-prefix collision for SHA-1 by CiPHPerCoder on Tuesday January 07, 2020 @11:25AM (#21981426)
Because they're already truncated.

SHA-384 is SHA-512 with a different IV (which doesn't affect LEAs) truncated to 384 bits (which gives you 128 bits of resistance against LEAs).

SHA-224 is the same story but with SHA-256 instead (and only 32 bits of LEA resistance).

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