Understanding Cryptography in E-Signatures
Introduction
Cryptography is the backbone of e-signatures, ensuring their authenticity and security. This guide explains how cryptographic techniques like public and private keys secure e-signatures and prevent fraud.
What Role Does Cryptography Play in E-Signatures?
- Public Key Infrastructure (PKI): Uses a public-private key pair to authenticate signatures.
- Hashing Algorithms: Convert document content into a fixed-length hash to ensure tamper detection.
What Are the Most Common Cryptographic Techniques?
- RSA Encryption: Ensures secure key exchanges between parties.
- SHA-256 Hashing: Detects any modifications to the document.
- Digital Certificates: Validate the identity of the signer.
Comparison Table: Cryptographic Techniques
| Technique | Purpose |
| RSA Encryption | Securely encrypts and exchanges keys. |
| SHA-256 Hashing | Detects document tampering. |
| Digital Certificates | Confirms the authenticity of the signer. |
FAQs
1. Why is cryptography critical for e-signatures?
It ensures security, authenticity, and tamper-proofing for signed documents.
2. Are all e-signatures cryptographically secure?
No, only digital signatures based on cryptographic methods like PKI provide high-level security.
Conclusion
Cryptography provides the foundation for secure e-signatures by protecting data and verifying signer identities. Understanding these principles helps businesses trust and adopt secure signing solutions.
Learn more about cryptography and e-signatures here.
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