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| SHA hashfüggvény× | Digitális Aláírási Sémák× | |
|---|---|---|
| Tudományterület | Kriptográfia | Kriptográfia |
| Módszercsalád | Process / pipeline | Process / pipeline |
| Keletkezés éve≠ | 1993 | 1978 |
| Megalkotó≠ | National Institute of Standards and Technology (NIST) | Ronald Rivest, Adi Shamir, Leonard Adleman |
| Típus≠ | One-way hash algorithm | Asymmetric signature algorithm |
| Alapmű≠ | National Institute of Standards and Technology (1993). Secure Hash Standard (SHS). Federal Information Processing Standards (FIPS) Publication 180. link ↗ | 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. DOI ↗ |
| Alternatív nevek≠ | SHA-1, SHA-256, SHA-512, Secure Hash Algorithm | Digital Signature Algorithm, Message Authentication and Integrity, Public Key Signature |
| Kapcsolódó | 4 | 4 |
| Összefoglaló≠ | The Secure Hash Algorithm (SHA) is a family of cryptographic hash functions standardized by NIST starting in 1993. SHA functions produce fixed-length digests from arbitrary-length input data, serving as a fundamental building block for digital signatures, message authentication, and data integrity verification across security-critical applications. | 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. |
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