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@ -21,9 +21,12 @@ import java.io.IOException;
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import java.security.GeneralSecurityException;
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import java.security.KeyFactory;
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import java.security.PrivateKey;
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import java.security.spec.InvalidKeySpecException;
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import java.security.spec.PKCS8EncodedKeySpec;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Base64;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.List;
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import java.util.function.Function;
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@ -35,6 +38,7 @@ import java.util.regex.Pattern;
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*
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* @author Scott Frederick
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* @author Phillip Webb
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* @author Moritz Halbritter
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*/
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final class PemPrivateKeyParser {
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@ -55,9 +59,12 @@ final class PemPrivateKeyParser {
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private static final List<PemParser> PEM_PARSERS;
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static {
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List<PemParser> parsers = new ArrayList<>();
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parsers.add(new PemParser(PKCS1_HEADER, PKCS1_FOOTER, "RSA", PemPrivateKeyParser::createKeySpecForPkcs1));
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parsers.add(new PemParser(EC_HEADER, EC_FOOTER, "EC", PemPrivateKeyParser::createKeySpecForEc));
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parsers.add(new PemParser(PKCS8_HEADER, PKCS8_FOOTER, "RSA", PKCS8EncodedKeySpec::new));
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parsers.add(new PemParser(PKCS1_HEADER, PKCS1_FOOTER, Collections.singleton("RSA"),
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PemPrivateKeyParser::createKeySpecForPkcs1));
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parsers.add(new PemParser(EC_HEADER, EC_FOOTER, Collections.singleton("EC"),
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PemPrivateKeyParser::createKeySpecForEc));
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parsers.add(new PemParser(PKCS8_HEADER, PKCS8_FOOTER, Arrays.asList("RSA", "EC", "DSA", "Ed25519"),
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PKCS8EncodedKeySpec::new));
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PEM_PARSERS = Collections.unmodifiableList(parsers);
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}
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@ -134,14 +141,14 @@ final class PemPrivateKeyParser {
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private final Pattern pattern;
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private final String algorithm;
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private final Collection<String> algorithms;
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private final Function<byte[], PKCS8EncodedKeySpec> keySpecFactory;
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PemParser(String header, String footer, String algorithm,
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PemParser(String header, String footer, Collection<String> algorithms,
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Function<byte[], PKCS8EncodedKeySpec> keySpecFactory) {
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this.pattern = Pattern.compile(header + BASE64_TEXT + footer, Pattern.CASE_INSENSITIVE);
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this.algorithm = algorithm;
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this.algorithms = algorithms;
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this.keySpecFactory = keySpecFactory;
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}
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@ -158,9 +165,16 @@ final class PemPrivateKeyParser {
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private PrivateKey parse(byte[] bytes) {
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try {
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PKCS8EncodedKeySpec keySpec = this.keySpecFactory.apply(bytes);
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KeyFactory keyFactory = KeyFactory.getInstance(this.algorithm);
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for (String algorithm : this.algorithms) {
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KeyFactory keyFactory = KeyFactory.getInstance(algorithm);
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try {
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return keyFactory.generatePrivate(keySpec);
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}
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catch (InvalidKeySpecException ignored) {
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}
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}
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return null;
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}
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catch (GeneralSecurityException ex) {
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throw new IllegalArgumentException("Unexpected key format", ex);
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}
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