BayernMessenger/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/util/Hash.kt

37 lines
1.1 KiB
Kotlin

/*
* Copyright 2019 New Vector Ltd
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package im.vector.matrix.android.internal.util
import java.security.MessageDigest
/**
* Compute a Hash of a String, using md5 algorithm
*/
fun String.md5() = try {
val digest = MessageDigest.getInstance("md5")
digest.update(toByteArray())
val bytes = digest.digest()
val sb = StringBuilder()
for (i in bytes.indices) {
sb.append(String.format("%02X", bytes[i]))
}
sb.toString().toLowerCase()
} catch (exc: Exception) {
// Should not happen, but just in case
hashCode().toString()
}