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- fun main(args: Array<String>) {
- val digest = MessageDigest.getInstance("SHA-256")
- args.forEach { digest.update(it.toLowerCase().toByteArray(Charset.forName("UTF-8"))) }
- println(digest.digest().toHexString())
- }
- /**
- * Set of chars for a half-byte.
- */
- private val CHARS = arrayOf('0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f')
- /**
- * Returns the string of two characters representing the HEX value of the byte.
- */
- internal fun Byte.toHexString(): String {
- val i = this.toInt()
- val char2 = CHARS[i and 0x0f]
- val char1 = CHARS[i shr 4 and 0x0f]
- return "$char1$char2"
- }
- /**
- * Returns the HEX representation of ByteArray data.
- */
- internal fun ByteArray.toHexString(): String {
- val builder = StringBuilder()
- for (b in this) {
- builder.append(b.toHexString())
- }
- return builder.toString()
- }
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