}

  /** Returns a hash function implementing the SHA-512 algorithm (512 hash bits). */
  public static HashFunction sha512() {
    return Sha512Holder.SHA_512;
  }

  private static final class Sha512Holder {
    static final HashFunction SHA_512 =
        new MessageDigestHashFunction("SHA-512", "Hashing.sha512()");
  }

  /**

// MSA VMOVI
	VMOVB	$511, W0   // 7b0ff807
	VMOVH	$24, W23   // 7b20c5c7
	VMOVW	$-24, W15  // 7b5f43c7
	VMOVD	$-511, W31 // 7b700fc7

	VMOVB	(R0), W8       // 78000220
	VMOVB	511(R3), W0    // 79ff1820
	VMOVB	-512(R12), W21 // 7a006560
	VMOVH	(R24), W12     // 7800c321
	VMOVH	110(R19), W8   // 78379a21
	VMOVH	-70(R12), W3   // 7bdd60e1
	VMOVW	(R3), W31      // 78001fe2
	VMOVW	64(R20), W16   // 7810a422

	VPGATHERQQ X0, 512(SP)(X1*1), X2        // c4e2f991940c00020000
	VPGATHERQQ X0, (R12)(X1*1), X2          // c4c2f991140c
	VPGATHERQQ X0, 16(R12)(X1*1), X2        // c4c2f991540c10
	VPGATHERQQ X0, 512(R12)(X1*1), X2       // c4c2f991940c00020000
	VPGATHERQQ X0, (BP)(X1*1), X2           // c4e2f991540d00
	VPGATHERQQ X0, 16(BP)(X1*1), X2         // c4e2f991540d10
	VPGATHERQQ X0, 512(BP)(X1*1), X2        // c4e2f991940d00020000

          .put("sHa-1", Hashing.sha1()) // Not the official name, but still works
          .put("SHA-1", Hashing.sha1())
          .put("SHA-256", Hashing.sha256())
          .put("SHA-384", Hashing.sha384())
          .put("SHA-512", Hashing.sha512())
          .build();

  public void testHashing() {
    for (String stringToTest : INPUTS) {
      for (String algorithmToTest : ALGORITHMS.keySet()) {

var KafkaSHA256 scram.HashGeneratorFcn = sha256.New

// KafkaSHA512 is a function that returns a crypto/sha512 hasher and should be used
// to create Client objects configured for SHA-512 hashing.
var KafkaSHA512 scram.HashGeneratorFcn = sha512.New

// XDGSCRAMClient implements the client-side of an authentication
// conversation with a server.  A new conversation must be created for

var KafkaSHA256 scram.HashGeneratorFcn = sha256.New

// KafkaSHA512 is a function that returns a crypto/sha512 hasher and should be used
// to create Client objects configured for SHA-512 hashing.
var KafkaSHA512 scram.HashGeneratorFcn = sha512.New

// XDGSCRAMClient implements the client-side of an authentication
// conversation with a server.  A new conversation must be created for

  fun decodeRsa512() {
    // The certificate + private key below was generated with OpenSSL. Never generate certificates
    // with MD5 or 512-bit RSA; that's insecure!
    //
    // openssl req \
    //   -x509 \
    //   -md5 \
    //   -nodes \
    //   -days 1 \
    //   -newkey rsa:512 \
    //   -keyout privateKey.key \
    //   -out certificate.crt
    val certificatePem =
      """

"3.7 OK"
"4.1.1 OK"
"4.1.2 OK"
"4.1.3 NON-STRICT"
"4.1.4 NON-STRICT"
"4.1.5 OK"
"4.2.1 OK"
"4.2.2 OK"
"4.2.3 NON-STRICT"
"4.2.4 OK"
"4.2.5 OK"
"5.1 OK"
"5.10 OK"
"5.11 OK"
"5.12 OK"
"5.13 OK"
"5.14 OK"
"5.15 OK"
"5.16 OK"
"5.17 OK"
"5.18 OK"
"5.19 OK"
"5.2 OK"
"5.20 OK"
"5.3 OK"
"5.4 OK"
"5.5 OK"
"5.6 OK"
"5.7 OK"
"5.8 OK"
"5.9 OK"

pkg os (darwin-amd64-cgo), const O_EXCL = 2048
pkg os (darwin-amd64-cgo), const O_SYNC = 128
pkg os (darwin-amd64-cgo), const O_TRUNC = 1024
pkg os (darwin-amd64-cgo), const PathListSeparator = 58
pkg os (darwin-amd64-cgo), const PathSeparator = 47
pkg os (freebsd-386), const DevNull = "/dev/null"
pkg os (freebsd-386), const O_APPEND = 8
pkg os (freebsd-386), const O_CREATE = 512
pkg os (freebsd-386), const O_EXCL = 2048

// https://cs.opensource.google/go/x/crypto/+/refs/tags/v0.22.0:ssh/common.go;l=85
var supportedMACs = []string{
	"******@****.***", "hmac-sha2-512******@****.***", "hmac-sha2-256", "hmac-sha2-512", "hmac-sha1", "hmac-sha1-96",
}

func sshPubKeyAuth(c ssh.ConnMetadata, key ssh.PublicKey) (*ssh.Permissions, error) {
	return authenticateSSHConnection(c, key, nil)
}