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Training Camp • Cybersecurity Glossary
Cryptographic mechanisms that provide authentication of a sender, integrity of a sender's message, and non-repudiation, using asymmetric keys to sign and verify data.
Digital Signatures Definition: Cryptographic mechanisms that provide authentication of a sender, integrity of a sender's message, and non-repudiation, using asymmetric keys to sign and verify data.
Provide authentication of a sender and integrity of a sender's message and non-repudiation services. Digital signatures are cryptographic mechanisms that verify the authenticity and integrity of digital messages or documents. Using asymmetric cryptography, the sender uses their private key to create a unique signature that recipients can verify using the sender's public key. Unlike encryption, digital signatures do not provide confidentiality. Digital signature standards include FIPS 186-4 (DSS), PKCS#1 (RSA), and ECDSA specifications. Organizations implement digital signatures through PKI, document signing solutions, code signing certificates, and email signing technologies. For example, a financial institution might use digital signatures for transaction authorization, allowing customers to digitally sign wire transfers that can be verified as authentic and unmodified. Related terms: PKI, Non-repudiation, Message integrity, Public key cryptography, Hash function, Certificate authority, Electronic signature.
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