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	デジタル署名方式	RSA暗号方式の分析
分野	暗号学	暗号学
系統	Process / pipeline	Process / pipeline
提唱年	1978	1978
提唱者	Ronald Rivest, Adi Shamir, Leonard Adleman	Ronald Rivest, Adi Shamir, Leonard Adleman
種類	Asymmetric signature algorithm	Asymmetric encryption and signature algorithm
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.	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.
別名	Digital Signature Algorithm, Message Authentication and Integrity, Public Key Signature	RSA Analysis, Rivest–Shamir–Adleman Analysis
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.	RSA (Rivest–Shamir–Adleman) is a foundational asymmetric cryptosystem introduced in 1978 that enables both encryption and digital signatures using a pair of public and private keys. It remains one of the most widely deployed cryptographic algorithms in modern security infrastructure, supporting secure communication and authentication across the internet.