Overview  >  klyn.cryptography  >  Cipher  >  rsaDecrypt
Overview Index Tree Deprecated
klyn.cryptography.Cipher.rsaDecrypt
method
public static rsaDecrypt(cipherText as String, privateKeyPem as String, padding as String = "OAEP", hashAlgorithm as String = "SHA-256", inputEncoding as String = "base64") as String throws CryptoException:
Description
Decrypts RSA ciphertext with a private key. 
import klyn.cryptography

keys = RSAKeyPairGenerator().generateKeyPair()
encrypted = Cipher.rsaEncrypt("hello", keys.publicKeyPem)
print(Cipher.rsaDecrypt(encrypted, keys.privateKeyPem))
Parameters
  • cipherText Encoded ciphertext.
  • privateKeyPem PEM-encoded private key.
  • padding RSA encryption padding. Defaults to `OAEP`.
  • hashAlgorithm Hash used by OAEP when applicable.
  • inputEncoding Ciphertext encoding: `base64`, `base64url` or `hex`.
Returns
Decrypted UTF-8 text.
Throws
  • CryptoException when decryption fails. ```klyn import klyn.cryptography keys = RSAKeyPairGenerator().generateKeyPair() encrypted = Cipher.rsaEncrypt("hello", keys.publicKeyPem) print(Cipher.rsaDecrypt(encrypted, keys.privateKeyPem)) ```