Lire la clé privée au format DER java

J'ai le code suivant pour lire une clé privée dans PKCS#8 format

public void encryptHash(String hashToEncrypt, String pathOfKey, String Algorithm) {
FileInputStream fis = null;
byte[] encodedKey = null;
try {
File f = new File(pathOfKey);
encodedKey = new byte[(int)f.length()];
fis = new FileInputStream(f);
fis.read(encodedKey);
fis.close();
KeyFactory kf = KeyFactory.getInstance("RSA");
PrivateKey privateKey = kf.generatePrivate(new PKCS8EncodedKeySpec(encodedKey));
Signature rsaSigner = Signature.getInstance("SHA1withRSA");
rsaSigner.initSign(privateKey);
fis = new FileInputStream(hashToEncrypt);
BufferedInputStream bis = new BufferedInputStream(fis);
byte[] buffer = new byte[1024];
int len = 0;
while ((len = bis.read(buffer)) >= 0) {
try {
rsaSigner.update(buffer, 0, len);
} catch (SignatureException ex) {
Logger.getLogger(DataEncryptor.class.getName()).log(Level.SEVERE, null, ex);
}
}
bis.close();
byte[] signature = rsaSigner.sign();
System.out.println(new String(signature));
} catch (SignatureException ex) {
Logger.getLogger(DataEncryptor.class.getName()).log(Level.SEVERE, null, ex);
} catch (InvalidKeyException ex) {
Logger.getLogger(DataEncryptor.class.getName()).log(Level.SEVERE, null, ex);
} catch (InvalidKeySpecException ex) {
Logger.getLogger(DataEncryptor.class.getName()).log(Level.SEVERE, null, ex);
} catch (FileNotFoundException ex) {
Logger.getLogger(DataEncryptor.class.getName()).log(Level.SEVERE, null, ex);
} catch (IOException ex) {
Logger.getLogger(DataEncryptor.class.getName()).log(Level.SEVERE, null, ex);
} catch (NoSuchAlgorithmException ex) {
Logger.getLogger(DataEncryptor.class.getName()).log(Level.SEVERE, null, ex);
} finally {
try {
fis.close();
} catch (IOException ex) {
Logger.getLogger(DataEncryptor.class.getName()).log(Level.SEVERE, null, ex);
}
}
}

Mais je suis de l'exception suivante.

dic 09, 2011 1:59:59 PM firmaelectronica.DataEncryptor encryptHash
Grave: null
java.security.spec.InvalidKeySpecException: java.security.InvalidKeyException: IOException : DER input, Integer tag error
at sun.security.rsa.RSAKeyFactory.engineGeneratePrivate(RSAKeyFactory.java:217)
at java.security.KeyFactory.generatePrivate(KeyFactory.java:372)
at firmaelectronica.DataEncryptor.encryptHash(DataEncryptor.java:40)
at firmaelectronica.FirmaElectronica.main(FirmaElectronica.java:39)
Caused by: java.security.InvalidKeyException: IOException : DER input, Integer tag error
at sun.security.pkcs.PKCS8Key.decode(PKCS8Key.java:361)
at sun.security.pkcs.PKCS8Key.decode(PKCS8Key.java:367)
at sun.security.rsa.RSAPrivateCrtKeyImpl.<init>(RSAPrivateCrtKeyImpl.java:91)
at sun.security.rsa.RSAPrivateCrtKeyImpl.newKey(RSAPrivateCrtKeyImpl.java:75)
at sun.security.rsa.RSAKeyFactory.generatePrivate(RSAKeyFactory.java:316)
at sun.security.rsa.RSAKeyFactory.engineGeneratePrivate(RSAKeyFactory.java:213)
... 3 more

aucune idée de ce qui est mal? J'ai essayé ce sur OpenSSL openssl pkcs8 -inform DER -in aaa010101aaa_FIEL.key -out aaa010101aaa_FIEL_key.pem et cela fonctionne, mais lorsque je veux lire la clé au format DER il envoie simplement que l'exception.

OriginalL'auteur BRabbit27 | 2011-12-09