针对你遇到的 java.security.InvalidKeyException: key length not 128/192/256 bits 异常,以下是一些可能的原因及解决方案: 1. 确认密钥长度是否符合AES算法的要求 AES 算法要求密钥长度必须是 128 位、192 位或 256 位。你需要检查你的代码中生成的密钥或指定的密钥长度是否符合这些要求。 示例代码:生成符合要求的...
org.bouncycastle.jcajce.provider.symmetric.util.BaseBlockCipher$InvalidKeyOrParametersException: Key length not 128/192/256 bits. at org.bouncycastle.jcajce.provider.symmetric.util.BaseBlockCipher.engineInit(Unknown Source) at javax.crypto.Cipher.implInit(Cipher.java:806) at javax.crypto.Cipher.choosePr...
new SecretKeySpec( keyData, "AES"); bouncycastle generates a very strange 127-bytes key (that causes the exception) while the JVM implementation correctly returns a 128-bit one. As far as I can tell keyData has the same length on both and "looks ...
int AES_set_decrypt_key(const unsigned char *userKey, const int bits, AES_KEY *key); 1. 2. 参数说明: 如果函数调用成功,返回0,否则是负数。 使用函数AES_ecb_encrypt对数据进行加解密 函数原型: void AES_ecb_encrypt(const unsigned char *in, unsigned char *out, const AES_KEY *key, const i...
BouncyCastle是一款开源的密码包，其中包含了大量的密码算法，使用BouncyCastle的目的就是为了扩充算法支持 ...
phpAES是128、192和256位AES加密密码的PHP 5(现在包括PHP 4版本)类实现。它*不需要* mcrypt扩展,或任何其他扩展都可以编译成PHP,它使用100%PHP,并且完全符合FIPS 197要求。PHP 5和PHP 4版本都与32位和64位系统兼容。 支持的密码模式包括:电子密码本(ECB),密码块链接(CBC),密码反馈(CFB)和输出反馈(OFB)。
AES block is 128 bits, whereas the size of the encryption key can be 128, 192 or 256 bits. Please note this, there is three length in the key, but the size of the encryption block always is 128 bits. Block cipher algorithms should enable encryption of the plaintext with size which ...
kgen.init(128, sr);//192 and 256 bits may not be availableSecretKey skey =kgen.generateKey();byte[] raw =skey.getEncoded();returnraw; }privatestaticbyte[] encrypt(byte[] raw,byte[] clear)throwsException { SecretKeySpec skeySpec=newSecretKeySpec(raw, "AES"); ...
AES 256密钥的加密/解密可以在Java中通过javax.crypto包中的Cipher类来实现。以下是一个简单的示例代码: 代码语言:txt 复制 import javax.crypto.Cipher; import javax.crypto.spec.SecretKeySpec; import java.nio.charset.StandardCharsets; import java.util.Base64; public class AESUtil { private static ...
int numberTriplets = lengthDataBits / TWENTYFOURBITGROUP; int numberQuartet = fewerThan24bits != 0 ? numberTriplets + 1 : numberTriplets; char encodedData[] = null; encodedData = new char[numberQuartet * 4]; byte k = 0, l = 0, b1 = 0, b2 = 0, b3 = 0; ...