Сашка724ая

[Feature] Support PEM-encoded ed25519 DKIM keys

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## Summary Currently, Rspamd cannot load PEM-encoded ed25519 keys and thinks they are RSA keys. Now that OpenSSL supports ed25519, I believe there are no benefits in using a custom...

[Suggestion] RSA Signing

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It would be good to have RSA signature functions along with encryption in Advanced Cipher Block