Merkle and Merckle are surnames of German origin. It used as a minimization of Old German given names such as Markwart (meaning "guard of the frontier") or Markhard (meaning "strong frontier"). They may refer to:
Cryptography and computing Merkle–Damgård construction, a method of building collision-resistant cryptographic hash functions Merkle–Hellman knapsack cryptosystem, an early public key cryptosystem Merkle's Puzzles, an early construction for a public-key cryptosystem Merkle tree, a computer hash tree
People Business Adolphe Merkle (1924–2012), Swiss Entrepreneur and patron of the sciences Adolf Merckle (19342009), German entrepreneur Edgar A. Merkle (1900–1984), American founder of Merkle Press in Washington, D.C. and Merkle Natural Resources Management Area on the Patuxent River in Maryland (19132000), German industrial manager and 1996 winner of the Adenauer-de Gaulle Prize Ludwig Merckle (born 1965), German businessman Philipp Daniel Merckle (born 1966), German entrepreneur
Religion Benjamin L. Merkle, professor at Southeastern Baptist Theological Seminary, North Carolina Benjamin R. Merkle, president of New Saint Andrews College, Idaho
Sport Andreas Merkle (born 1962), former German footballer Ed Merkle (191787), American football player Fred Merkle (18881956), American baseball player (1918–1993), German football trainer and coach of 1. FC Köln
Other people Judith Merkle Riley (19422010), American writer, teacher and academic Marcel-André Casasola Merkle (born 1977), German game designer Ralph Merkle (born 1952), American cryptographer
Other uses Merkle Natural Resources Management Area, Maryland, United States Merkle's Boner, a baserunning mistake in baseball
See also Merkel (surname) Merkel (disambiguation)