Ralph C. Merkle:A Certified Digital Signature(Brassard, G. (eds) Advances in Cryptology — CRYPTO’ 89 Proceedings. CRYPTO 1989. Lecture Notes in Computer Science, vol 435.)link.springer.com.1990.doi:10.1007/0-387-34805-0_21 Viitattu 24.6.2026.(englanniksi)
Ralph C. Merkle:A Certified Digital Signature(Brassard, G. (eds) Advances in Cryptology — CRYPTO’ 89 Proceedings. CRYPTO 1989. Lecture Notes in Computer Science, vol 435.)link.springer.com.1990.doi:10.1007/0-387-34805-0_21 Viitattu 24.6.2026.(englanniksi)