pkcs#5

AES/CBC/PKCS5Padding vs AES/CBC/PKCS7Padding with 256 key size performance java

由 烂漫一生 提交于 2019-11-27 17:53:27
I am currently using AES/CBC/PKCS5Padding for encrypting files in Java with 256 bytes key size, but while searching I found on stackexchange PKCS#5-PKCS#7 Padding and it is mentioned, PKCS#5 padding is a subset of PKCS#7 padding for 8 byte block sizes So I want to know Will the performance of AES/CBC/PKCS7Padding will be better then AES/CBC/PKCS5Padding for the above configuration? How can we configure the block size in Java as it is mentioned PKCS#7 padding would work for any block size from 1 to 255 bytes. My sample code is, SecureRandom rnd = new SecureRandom(); IvParameterSpec iv = new

Deriving a secret from a master key using JCE/JCA

由 两盒软妹~` 提交于 2019-11-27 13:21:05
问题 Can some point me in the right direction? I'd like to use JCE/JCA to derive a new key from a master secret key, How can I achieve this? Regards. 回答1: The JCA provides standard password-based key derivation functions like PBKDF2 defined in PKCS#5 v2.0 and RFC 2898. This algorithm creates some random material from a master secret (a password) in order to generate a key suitable for a given cipher. public byte[] deriveKey(String password, byte[] salt, int keyLen) { SecretKeyFactory kf =

AES/CBC/PKCS5Padding vs AES/CBC/PKCS7Padding with 256 key size performance java

由 泪湿孤枕 提交于 2019-11-26 19:15:33
问题 I am currently using AES/CBC/PKCS5Padding for encrypting files in Java with 256 bytes key size, but while searching I found on stackexchange PKCS#5-PKCS#7 Padding and it is mentioned, PKCS#5 padding is a subset of PKCS#7 padding for 8 byte block sizes So I want to know Will the performance of AES/CBC/PKCS7Padding will be better then AES/CBC/PKCS5Padding for the above configuration? How can we configure the block size in Java as it is mentioned PKCS#7 padding would work for any block size from
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