Cryptography - ECDSA Algorithm Cryptography - DSA Algorithm Cryptography - Diffie-Hellman Algorithm Data Integrity in Cryptography Data Integrity in Cryptography Message Authentication Cryptography Digital signatures Public Key Infrastructure Hashing MD5 (Message Digest Algorithm 5) SHA-1 (Secure Hash Algorithm...
private static PublicKey getPublicKeyFromX509(String algorithm, String bysKey) throws NoSuchAlgorithmException, Exception { byte[] decodedKey = Base64.decode(bysKey,Base64.DEFAULT); X509EncodedKeySpec x509 = new X509EncodedKeySpec(decodedKey); KeyFactory keyFactory = KeyFactory.getInstance(algorithm);...
So how does the PGP encryption algorithm work?Here’s an example of PGP in action:Let’s say Sara wants to send Jane a private email and she doesn’t want their boss Bill to see it; Jane now needs to generate two keys. One public and one private; She now shares the public key ...
It combines private-key and public-key cryptography and the use of symmetric and asymmetric key technology to encrypt data as it travels across networks. PGP follows a three-step process: PGP generates a huge, one-time-use public encryption algorithm that cannot be guessed, which becomes the ...
注意,这个指纹会使用"SecureTrust CA"这个证书机构的私钥用签名算法(Signature algorithm)加密后和证书放在一起。 注意,为了保证安全,在证书的发布机构发布证书时,证书的指纹和指纹算法,都会加密后再和证书放到一起发布,以防有人修改指纹后伪造相应的数字证书。这里问题又来了,证书的指纹和指纹算法用什么加密呢?他们是...
import java.io.BufferedOutputStream; import java.io.FileOutputStream; import java.math.BigInteger; import java.security.SecureRandom; import java.util.Date; import org.bouncycastle.bcpg.ArmoredOutputStream; import org.bouncycastle.bcpg.HashAlgorithmTags; import org.bouncycastle.bcpg.SymmetricKeyAlgorithm...
Asymmetric Algorithm: RSA, RSA-E, RSA-S, ELG-E, DSA Symmetric Algorithm: 3DES, CAST5, BLOWFISH, AES, AES192, AES256, TWOFISH Hash: MD5, SHA1, RIPEMD160, SHA256, SHA384, SHA512, SHA224 Compression: Uncompressed, ZIP, ZLIB, BZIP2 ...
Man-in-the-middle Trapdoors Keyescrow Bruteforceattack Publickeyencryptionsystems 1976:DiffieandHellman Merkle-HellmanKnapsacks 1978:Rivest-Shamir-Adelman(RSA) 1984:Elgamalanddigitalsignature Hashalgorithm RSAEncryption operateswitharithmeticmodn e=encryptionkey;d=decryptionkey ...
Finally, the third use PGP has is file encryption. Since PGP uses the RSA algorithm it offers a very secure option to encrypt files, in particular when used together with a good cyber threat detection solution.Pros and Cons of PGPLike everything else in life, PGP is not perfect either. ...
import org.bouncycastle.bcpg.SymmetricKeyAlgorithmTags; import org.bouncycastle.bcpg.sig.Features; import org.bouncycastle.bcpg.sig.KeyFlags; import org.bouncycastle.crypto.generators.RSAKeyPairGenerator; import org.bouncycastle.crypto.params.RSAKeyGenerationParameters; ...