diff options
author | cyberta <cyberta@riseup.net> | 2024-01-25 23:41:42 +0000 |
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committer | cyberta <cyberta@riseup.net> | 2024-01-25 23:41:42 +0000 |
commit | 5bf3f807a4804c18b7dc88e07e4e34ecf0791713 (patch) | |
tree | a092fd4ab72d1a31daa3cc442331cbb05d034ef0 /app/src/main/java/se/leap/bitmaskclient/base/utils/CertificateHelper.java | |
parent | ce8106f60d83ee2a788f1920437a0bbd48d6b15f (diff) | |
parent | e84289ab4380ae61cc9f2a86da9a16d1aae45cbd (diff) |
Merge branch 'post_release_work' into 'master'
post release tweaks and fixes
Closes #9150 and #8983
See merge request leap/bitmask_android!264
Diffstat (limited to 'app/src/main/java/se/leap/bitmaskclient/base/utils/CertificateHelper.java')
-rw-r--r-- | app/src/main/java/se/leap/bitmaskclient/base/utils/CertificateHelper.java | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/app/src/main/java/se/leap/bitmaskclient/base/utils/CertificateHelper.java b/app/src/main/java/se/leap/bitmaskclient/base/utils/CertificateHelper.java new file mode 100644 index 00000000..11202734 --- /dev/null +++ b/app/src/main/java/se/leap/bitmaskclient/base/utils/CertificateHelper.java @@ -0,0 +1,64 @@ +package se.leap.bitmaskclient.base.utils; + +import androidx.annotation.NonNull; +import androidx.annotation.VisibleForTesting; + +import java.security.MessageDigest; +import java.security.NoSuchAlgorithmException; +import java.security.cert.CertificateEncodingException; +import java.security.cert.X509Certificate; + +import de.blinkt.openvpn.core.NativeUtils; + +public class CertificateHelper { + + public interface CertificateHelperInterface { + String getFingerprintFromCertificate(X509Certificate certificate, String encoding) throws NoSuchAlgorithmException, CertificateEncodingException; + + } + + public static class DefaultCertificateHelper implements CertificateHelperInterface { + + public String byteArrayToHex(byte[] input) { + int readBytes = input.length; + StringBuffer hexData = new StringBuffer(); + int onebyte; + for (int i = 0; i < readBytes; i++) { + onebyte = ((0x000000ff & input[i]) | 0xffffff00); + hexData.append(Integer.toHexString(onebyte).substring(6)); + } + return hexData.toString(); + } + + /** + * Calculates the hexadecimal representation of a sha256/sha1 fingerprint of a certificate + * + * @param certificate + * @param encoding + * @return + * @throws NoSuchAlgorithmException + * @throws CertificateEncodingException + */ + @Override + public String getFingerprintFromCertificate(X509Certificate certificate, String encoding) throws NoSuchAlgorithmException, CertificateEncodingException { + byte[] byteArray = MessageDigest.getInstance(encoding).digest(certificate.getEncoded()); + return byteArrayToHex(byteArray); + } + } + + private static CertificateHelperInterface instance = new DefaultCertificateHelper(); + + @VisibleForTesting + public CertificateHelper(CertificateHelperInterface helperInterface) { + if (!NativeUtils.isUnitTest()) { + throw new IllegalStateException("CertificateHelper injected with CertificateHelperInterface outside of an unit test"); + } + instance = helperInterface; + } + + @NonNull + public static String getFingerprintFromCertificate(X509Certificate certificate, String encoding) throws NoSuchAlgorithmException, CertificateEncodingException { + return instance.getFingerprintFromCertificate(certificate, encoding); + } + +} |