手法を比較

	デジタル署名方式	TLSプロトコル解析
分野	暗号学	暗号学
系統	Process / pipeline	Process / pipeline
提唱年	1978	1994
提唱者	Ronald Rivest, Adi Shamir, Leonard Adleman	Netscape Communications Corporation, IETF
種類	Asymmetric signature algorithm	Cryptographic transport protocol
原典	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.	Rescorla, E. (2018). The Transport Layer Security (TLS) Protocol Version 1.3. RFC 8446.
別名	Digital Signature Algorithm, Message Authentication and Integrity, Public Key Signature	TLS/SSL Protocol, HTTPS Security, Secure Transport Layer
関連	4	4
概要	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.	The Transport Layer Security (TLS) protocol is the cryptographic standard that secures web communication and email transmission. Evolved from SSL (Secure Sockets Layer), TLS provides authentication, encryption, and integrity protection for data in transit. The protocol combines public-key cryptography (RSA, ECDH) for key agreement, symmetric encryption (AES) for bulk data, and digital signatures (SHA-256) for authentication.