我想知道我是否可以在Android Studio 没有盐的情况下使用SHA-512哈希字符串。
我已经看到了其他问题,但它们都涉及dataName :: GenericData -> String
dataIdentifier :: GenericData -> Double
dataParsing :: GenericData -> String -> Maybe a
dataEmptyInstance :: String -> GenericData
,但我想要这样的事情:
salt
而TestBox.text = sha512("Hello, world!");
会读TextBox
;
答案 0 :(得分:9)
你看到的其他问题使用盐,所以不要像这样使用盐:
MessageDigest md = MessageDigest.getInstance("SHA-512");
byte[] digest = md.digest("Hello, world!".getBytes());
StringBuilder sb = new StringBuilder();
for (int i = 0; i < digest.length; i++) {
sb.append(Integer.toString((digest[i] & 0xff) + 0x100, 16).substring(1));
}
System.out.println(sb);
基于此answer。
答案 1 :(得分:2)
Keds 的例子是对的,但 .length 总是大于 32,(127) 所以更正确的答案应该是
private fun getSHA512(input:String):String{
val md: MessageDigest = MessageDigest.getInstance("SHA-512")
val messageDigest = md.digest(input.toByteArray())
// Convert byte array into signum representation
val no = BigInteger(1, messageDigest)
// Convert message digest into hex value
var hashtext: String = no.toString(16)
// Add preceding 0s to make it 128 chars long
while (hashtext.length < 128) {
hashtext = "0$hashtext"
}
// return the HashText
return hashtext
}
答案 2 :(得分:0)
在kotlin中计算sha-512的方法
fun getSHA512(input:String):String{
val md: MessageDigest = MessageDigest.getInstance("SHA-512")
val messageDigest = md.digest(input.toByteArray())
// Convert byte array into signum representation
val no = BigInteger(1, messageDigest)
// Convert message digest into hex value
var hashtext: String = no.toString(16)
// Add preceding 0s to make it 32 bit
while (hashtext.length < 32) {
hashtext = "0$hashtext"
}
// return the HashText
return hashtext
}
答案 3 :(得分:-1)
我猜Kotlin中的等效词是:
fun encriptar(cadena: String): String {
var md: MessageDigest = MessageDigest.getInstance("SHA-512")
var digest = md.digest(cadena.toByteArray())
var sb: StringBuilder = StringBuilder()
var i = 0
while (i < digest.count()) {
sb.append(((digest[i] and 0xff.toByte()) + 0x100).toString(16).substring(0, 1))
i++
}
return sb.toString()
}