This part of ISO/IEC 10118 specifies dedicated hash-functions, i.e., specially designed hash-functions. The hash- functions in this part of ISO/IEC 10118 are based on the iterative use of a round-function. Seven distinct round- functions are specified, giving rise to distinct dedicated hash-functions. The first and third dedicated hash-functions in clauses 7 and 9 respectively provide hash-codes of lengths up to 160 bits; the second in clause 8 provides hash-codes of lengths up to 128 bits; the fourth in clause 10 provides hash-codes of lengths up to 256 bits; the sixth in clause 12 provides hash-codes of a fixed length, 384 bits;