เปรียบเทียบวิธี

	HMAC	zk-SNARK
สาขาวิชา	วิทยาการเข้ารหัสลับ	วิทยาการเข้ารหัสลับ
ตระกูล	Machine learning	Machine learning
ปีกำเนิด	1997	2014
ผู้ริเริ่ม	Hugo Krawczyk	Eli Ben-Sasson
ประเภท	cryptographic authentication mechanism	zero-knowledge argument of knowledge
แหล่งต้นตำรับ	Krawczyk, H., Bellare, M., & Crechanko, R. (1997). HMAC: Keyed-Hashing for Message Authentication. RFC 2104.	Ben-Sasson, E., Chiesa, A., Garman, C., Green, M., Miers, I., Tromer, E., & Virza, M. (2014). Zerocash: Decentralized Anonymous Payments from Bitcoin. In IEEE Symposium on Security and Privacy (SP), pp. 459-474.
ชื่อเรียกอื่น	HMAC, keyed hash function	zk-SNARK, zero-knowledge proof, SNARK
ที่เกี่ยวข้อง	3	3
สรุป	HMAC (Hash-Based Message Authentication Code) is a cryptographic algorithm for authenticating messages using a secret key and a hash function. Standardized in RFC 2104 (1997), HMAC can be combined with any cryptographic hash function (SHA-256, SHA-3, etc.) to create a message authentication code (MAC). HMAC provides both data integrity and authentication, detecting both accidental corruption and deliberate tampering, and is widely used in web security (TLS/SSL), API authentication, and network protocols.	A zk-SNARK (Zero-Knowledge Succinct Non-Interactive Argument of Knowledge) is a cryptographic proof system that allows a prover to convince a verifier that a statement is true without revealing any information beyond the statement's validity. The acronym describes its key properties: it requires no interaction, proofs are short (succinct), and verification is efficient. zk-SNARKs were popularized by their application in the Zcash cryptocurrency but have since found use in blockchain scaling solutions, privacy-preserving computations, and verifiable computing.