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- an optional IV (initialization vector). If you use a key only once, all is good. Using the same key all the time (e.g. for years) is a security leak! Why? AES uses fixed blocks to organize the encryption. If you encrypt with a key, the sequence of the blocks is always the same without IV. If you e
link: Python Version from Crypto.Cipher import AES from base64 import b64decode, b64encode KeyText = 'Your Key' ivtext = 'Your IV' # Block size and PKCS5
link: This line is wrong. Remember, the input string to your decrypt function is a Base64 encoded string. You have to decode the string from Base64, not jus
link: @KMatle great piece of code!. Although I'm having some issues. I try your functions with: Sub EncryptText(text As String) As String Dim inputB()

It looks like your data is Base64 encoded. You don't show the code you use to initialise 'b' which I assume is the encrypted data.
link: b variable is decoded base64 string
link: My data is = The data is encrypted with AES 128 CBC with 1234567890123456 key without IV I cannot decrypt that with online sites But cannot decrypt th
link: The original string is "2114019028,1,ev_", it can be encrypted with AES 128 CBC, padding mode is PKCS5Padding, as agraham said #5, it is not without I

Instead of generating AES keys using just Agraham's Encryption library: Dim key As KeyGenerator key.Initialize("AES") key.GenerateKey We can improve it, specify the length of the key (128, 192 or 256) and the Bouncy Castle provider using Javaobject and Reflection library: Dim key As KeyGenerat

For a write up on how I derived at this implementation, see https://www.b4x.-delphi-aes-encryption-exchange-with-b4a-b4j.97959/. 2019/08/26: CBC Mode update: The CBC mode encryption/decryption did not work properly for plaintext/ciphertext messages that were longer than 16 bytes and whose length we
link: I am trying to decrypt a string using AES-128 in ECB mode. String I am trying to decrypt is from a 3rd party (not something I encrypted). Will this w
link: lb3aesecb._initialize (java line: 92) java.security.NoSuchAlgorithmException: Cannot find any provider supporting AES/ECB/ISO7816-4PADDING at java
link: To share data with Delphi. B4XEncryption is just as hands off, since it handles salting and random IV for you. Plus it’s B4X. This one only works with

While not a crypto expert, I don't see any source that claims that AES 128 is not secure. On the contrary. Technically it shouldn't be difficult to add 256 bit encryption to B4XEncryption.
link: I agree. 128 is in reality, fine, but then when you Google you can find headlines like this, "Does Size Matter? AES 128-Bit Encryption is (Probably)
link: I am using B4XCipher and it works great, however I understand it is only 128 bit? There are now rumblings that this is not secure, or will not e sec

Code with Msgbox = broken code. First step is to replace it with Log. Your C# doesn't use any salt. AES = 128 key size. I'm not sure that it is the same size as your C# code.
link: AES-256: Key 32 Bytes (256 Bits / 8) AES-128: Key 16 Bytes (128 / 8) IV: 16 Bytes (both) Check if IV, Key and Salt looks the same and IV and Salt are
link: How can I use AES-256: Key 32 Bytes (256 Bits / 8) within Android? I also tried Keysize of 128 within my C# encryption. I did not succeed in decrypt
link: Encrypt(data, kg.Key,True) Return su.EncodeBase64(data) End Sub Sub Decrypt(enc As String) As String Dim Bconv As ByteConverter Dim data(

It is AES 128bit. Note that the data stored includes the IV and salt so a generic AES 128 bit decryptor will fail to decrypt it.
link: I use Encrypt method in Cipher,Is it 128-bit encryption?

What is the question or problem? AES 128 related threads: https://www.b4x./?query=aes+128 Use ByteConverter to convert the hex strings to bytes.
link: result : if i try using web Aes : http://extranet.cryptomathic.com/aescalc/index result is : 32 bytes I don't know where is problem
link: Hi again, i have to encrypt with AES 128 using this : String to encrypt hex = password hex = result cripted hex must be sam
link: Try it with: AES/CBC/PKCS5Padding

Yes, it is a strong encryption (AES 128 with random salt).
link: This library allows you to encrypt or decrypt data using the AES encryption method. It is simple to use and it is compatible with B4J jB4XEncryption
link: Actually I need to encrypt data in B4a and decrypt in oracle.. using B4xEncryption I can encrypt data but is it AES128 or AES256 bit encryption ? Ne
link: This only use aes? what about 3des victor

You can use iEncryption library to encrypt with AES: https://www.b4x.com/b4i/help/iencryption.html
link: Hey guys, Is there any way to implement AES 128 with symmetric key in B4I. Does the iEncryption library allow working with AES 128 with symmetric key
link: I'm loving you.. :)

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