So sánh phương pháp

	Trao đổi khóa Diffie-Hellman	Sơ đồ chữ ký số
Lĩnh vực	Mật mã học	Mật mã học
Họ	Process / pipeline	Process / pipeline
Năm ra đời	1976	1978
Người khởi xướng	Whitfield Diffie, Martin Hellman	Ronald Rivest, Adi Shamir, Leonard Adleman
Loại	Asymmetric key exchange algorithm	Asymmetric signature algorithm
Công trình gốc	Diffie, W., & Hellman, M. E. (1976). New directions in cryptography. IEEE Transactions on Information Theory, 22(6), 644–654.	Rivest, R. L., Shamir, A., & Adleman, L. (1978). A method for obtaining digital signatures and public-key cryptosystems. Communications of the ACM, 21(2), 120–126.
Tên gọi khác	DH Key Exchange, Diffie-Hellman Key Agreement	Digital Signature Algorithm, Message Authentication and Integrity, Public Key Signature
Liên quan	4	4
Tóm tắt	The Diffie-Hellman key exchange, invented by Whitfield Diffie and Martin Hellman in 1976, is a foundational protocol for establishing a shared secret over an insecure communication channel. Two parties who have never previously communicated can use Diffie-Hellman to agree on a symmetric encryption key that an eavesdropper cannot easily derive, even after observing all public exchanges.	A digital signature scheme provides authentication, integrity assurance, and non-repudiation of electronically signed documents. Using public-key cryptography (such as RSA, DSA, or ECDSA), the originator signs a message with a private key in a way that any recipient can verify the signature using the originator's public key, proving that the message was created by the claimed author and has not been tampered with.