pss: add function to get salt length from RSA PSS keys

RustCrypto / RSA

RSA implementation in pure Rust

Apache License 2.0

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Closed lumag closed 1 year ago

lumag commented 1 year ago

To create proper RsaPssParams it is necessary to determine the salt length specified for the signing key. Add a function to get it from signing keys.

tarcieri commented 1 year ago

Looks good, thanks!