Java中常用的加密算法应用，1. MD5加密，常用于加密用户名密码，当用户验证时。2. SHA加密，与MD5相似的用法，只是两者的算法不同。3. RSA加密，RAS加密允许解密。常用于文本内容的加密。-Java encryption algorithm commonly used in applications, 1. MD5 encryption, user name commonly used in the encryption password, when a user authentication. 2. SHA encryption, and MD5 is similar to the usage of only two different algorithm. 3. RSA encryption, RAS encryption allowing decryption. Commonly used in the text of encryption.