java 将字符串转换为私钥和公钥 (RSA)
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convert string to private and public key (RSA)
提问by Haya Raed
The two strings that are the private and public keys are :
作为私钥和公钥的两个字符串是：
static String Public =
"MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDH+wPrKYG1KVlzQUVtBghR8n9d" + "/n" +
"zcShSZo0+3KgyVdOea7Ei7vQ1U4wRn1zlI5rSqHDzFitblmqnB2anzVvdQxLQ3Uq" + "/n" +
"EBKBfMihnLgCSW8Xf7MCH+DSGHNvBg2xSNhcfEmnbLPLnbuz4ySn1UB0lH2eqxy5" + "/n"+
"0zstxhTY0binD9Y+rwIDAQAB"+ "/n";
static String Private =
"MIICxjBABgkqhkiG9w0BBQ0wMzAbBgkqhkiG9w0BBQwwDgQIr5NQ/LYPG/UCAggA" +"/n"+
"MBQGCCqGSIb3DQMHBAiLh89iGSkmoASCAoBCpAo9/IzDE3yGhvWr9RgozE7revOo" +"/n"+
"V2OXmU+d0+WYAAx2GYVaUCbFVrmgiVmrbiTgLUMXAGIpvxQ2rzyIvRHW/RN3Gcky" +"/n"+
"qR/AwBatzixqrnoS4aD1/Ovjr4hwde4XHYbPEilZZuVAJFiznhy73qm/So4XghSY........." ;
I have read the other questions and tried their solutions but nothing worked....I have a public and private key both as strings.. I need to convert them to 'Key' but i keep getting java.security.spec.InvalidKeySpecException: java.security.InvalidKeyException ..at generatePublic and generatePrivate functions.. also the keys are just for testing therefore, it is ok if they are known to others...
我已经阅读了其他问题并尝试了他们的解决方案，但没有任何效果......我有一个公钥和私钥都作为字符串......我需要将它们转换为“Key”，但我不断收到 java.security.spec.InvalidKeySpecException： java.security.InvalidKeyException ..at generatePublic 和 generatePrivate 函数.. 密钥也仅用于测试，因此，如果其他人知道它们就可以了...
public static Key loadPublicKey(String stored) throws GeneralSecurityException, IOException
{
byte[] data = Base64.getDecoder().decode((stored.getBytes()));
X509EncodedKeySpec spec = new X509EncodedKeySpec(data);
KeyFactory fact = KeyFactory.getInstance("RSA");
return fact.generatePublic(spec);
}
public static Key loadPrivateKey(String key64) throws GeneralSecurityException, IOException {
byte[] clear = Base64.getDecoder().decode(key64.getBytes());
PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(clear);
KeyFactory fact = KeyFactory.getInstance("RSA");
PrivateKey priv = fact.generatePrivate(keySpec);
Arrays.fill(clear, (byte) 0);
return priv;
}
回答by Jens
Remove the line Feeds in the string declaration. That is not part of the key:
删除字符串声明中的 Feeds 行。这不是关键的一部分：
static String Public =
"MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDH+wPrKYG1KVlzQUVtBghR8n9d" +
"zcShSZo0+3KgyVdOea7Ei7vQ1U4wRn1zlI5rSqHDzFitblmqnB2anzVvdQxLQ3Uq" +
"EBKBfMihnLgCSW8Xf7MCH+DSGHNvBg2xSNhcfEmnbLPLnbuz4ySn1UB0lH2eqxy5" +
"0zstxhTY0binD9Y+rwIDAQAB";
static String Private =
"MIICxjBABgkqhkiG9w0BBQ0wMzAbBgkqhkiG9w0BBQwwDgQIr5NQ/LYPG/UCAggA" +
"MBQGCCqGSIb3DQMHBAiLh89iGSkmoASCAoBCpAo9/IzDE3yGhvWr9RgozE7revOo" +
"V2OXmU+d0+WYAAx2GYVaUCbFVrmgiVmrbiTgLUMXAGIpvxQ2rzyIvRHW/RN3Gcky" +
"qR/AwBatzixqrnoS4aD1/Ovjr4hwde4XHYbPEilZZuVAJFiznhy73qm/So4XghSY........." ;
I have tried it with the following code:
我已经用下面的代码试过了：
public static void main(String[] args) throws GeneralSecurityException, IOException {
System.out.println(loadPublicKey(Public));
}
public static Key loadPublicKey(String stored) throws GeneralSecurityException, IOException
{
byte[] data = Base64.getDecoder().decode((stored.getBytes()));
X509EncodedKeySpec spec = new X509EncodedKeySpec(data);
KeyFactory fact = KeyFactory.getInstance("RSA");
return fact.generatePublic(spec);
}
And Output is:
输出是：
Sun RSA public key, 1024 bits
modulus: 140431102839105138202102866401190456107365606715815288536913018579006717438700259314092212104831553250527764925385527697411165705192297577022746989837839401358787285684108054389360182109284048524426941021357601686464156659759470495649944686235380003772357268264646549523784880655065600797504478771675703688879
public exponent: 65537
