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FiloSottile avatar FiloSottile commented on July 1, 2024

The chunk size is 64 KiB, the encrypted chunk size is encChunkSize = ChunkSize + poly1305.TagSize, what's 65 KiB + 16 KiB = 81 KiB.

poly1305.TagSize is 16 bytes, not KiB.

How I read the age documentation, the Poly1305 authenticator (16 bytes) is a random nonce.

The Poly1305 authenticator is a MAC tag, not a nonce. The nonce is the counter, as you say below.

So, does this mean that the theoretical max. size of file age can handle is 2^(11*8)*64 KiB?

Correct, 2.028×10^13 EB (exabytes) =)

from age.

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