Digital Signature is defined as

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Digital Signature is defined as

Digital signatures are created and verified using public-key cryptography. The signer uses a private key to generate a signature on the message (typically by signing a hash of the message). Verifiers use the signer’s public key to check the signature by decrypting it and comparing the result to a fresh hash of the message. If they match, the signature is valid, confirming who signed it and that the message hasn’t been altered. This is why it isn’t just a scanned image of a signature, a code number, or software that merely recognizes a signature—the cryptographic process with private/public keys provides authentic, tamper-evident proof.

Digital signatures are created and verified using public-key cryptography. The signer uses a private key to generate a signature on the message (typically by signing a hash of the message). Verifiers use the signer’s public key to check the signature by decrypting it and comparing the result to a fresh hash of the message. If they match, the signature is valid, confirming who signed it and that the message hasn’t been altered. This is why it isn’t just a scanned image of a signature, a code number, or software that merely recognizes a signature—the cryptographic process with private/public keys provides authentic, tamper-evident proof.

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