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Compromise of SHA-1 Certificate Thumbprint: A Reality in 2023?

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Compromise of SHA-1 Certificate Thumbprint: A Reality in 2023? (PDF, 0.42MB)Published: 14 Feb, 2024
Created by:
Barry Markey

A typical coding pattern is seen in online service APIs that make authentication decisions based on X509 certificate thumbprint comparisons. Typically, the thumbprint provided by the language runtime returns a SHA-1 hash for the certificate, but was not SHA-1 deprecated some years ago because of security concerns?

Compromise of SHA-1 Certificate Thumbprint: A Reality in 2023?