BitPrint

From iA wiki

See also: Bitzi

Bitzi's "bitprint" file identifiers are a concatenation of:

- the SHA-1 of the whole file (20 bytes)

- the "TigerTree" of the whole file (the newer "Tiger" secure hash, applied to the file broken up into 1K blocks, combined up through a binary hash tree) (24 bytes)

They are usually written -- for human eyes, cutting and pasting, or in protocol transmissions -- as Base32-encoded values, a format which can express the binary data in less space than hexadecimal, but without adding the case-sensitivity and special characters of Base64.