47 lines
1.6 KiB
Clojure
47 lines
1.6 KiB
Clojure
(ns repl-sessions.rsa-keys
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(:require
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[clojure.string :as str])
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(:import
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(java.security KeyPairGenerator Signature)
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(java.security.spec X509EncodedKeySpec)
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(java.util Base64)))
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(def kpg (KeyPairGenerator/getInstance "RSA"))
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(.initialize kpg 2048)
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(def kp (.generateKeyPair kpg))
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(.getEncoded (.getPublic kp))
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(.getEncoded (.getPrivate kp))
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(let [s (.encodeToString (Base64/getEncoder) (.getEncoded (.getPublic kp)))
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parts (map (partial apply str) (partition-all 64 s))]
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(str/join
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(map #(str % "\r\n")
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`["-----BEGIN PUBLIC KEY-----"
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~@parts
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"-----END PUBLIC KEY-----"])))
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(def pem "-----BEGIN PUBLIC KEY-----\r\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAy3WsUuEyZLsy/2XxJ+ou\r\nnNr14R1x9laQh4EitjT4e1OPJwHHIBqEPUWk4MQzU13Jga4uua28Ecl3BxC9lSnf\r\nDp96Z0NAdkYjuCgC9xo9EjKaK8ijIbm58d4uifIl/XKZE6tYTGXXzmnx4nCfcWfF\r\n67tut/4k+/wVMjjHMLl9VhzHsBz3Wr+h7v+4SLFftq9NorMknWQuIh3IzQUNZBps\r\nCw8JRDUx8Of/I44mJMc2N12f41TLK65VCvkXF3K5qIS9jTEdhhOA8dsB92DEyaTu\r\ns+jhqXM4ivFfxDyOasQRZ0bEO+OEcJua7nnvNsFzGLkIb3/eJ1HlCQ+AKVSUGcBZ\r\nbwIDAQAB\r\n-----END PUBLIC KEY-----\r\n")
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(X509EncodedKeySpec.
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(.decode (Base64/getDecoder)
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(str/replace pem #"(-+(BEGIN|END) PUBLIC KEY-+|\R)" ""))
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)
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;; sign
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(def sign (Signature/getInstance "SHA256withRSA"))
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(.initSign sign (.getPrivate kp))
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(.update sign (.getBytes "hello"))
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(def signature (.sign sign))
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(.encodeToString (Base64/getEncoder) signature)
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;; verify
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(def sign (Signature/getInstance "SHA256withRSA"))
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(.initVerify sign (.getPublic kp))
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(.update sign (.getBytes "hello"))
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(.verify sign signature)
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